[gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check

[gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check

[German]

This is very strange. When I boot up my box and login as a user I can use screen. But if I booted up and logged in as root first and then su user, the user have the error message displayed in the subject line. Any ideas?

-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check

[Neil Bothwick]

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On 13 March 2015 15:52:41 GMT+00:00, German <gentgerman@gmail.com> wrote:
> This is very strange. When I boot up my box and login as a user I can
> use screen. But if I booted up and logged in as root first and then su
> user, the user have the error message displayed in the subject line.
> Any ideas?
> 
> -- 
> German <gentgerman@gmail.com>

Try su - l user. 
-- 
Sent from my Android phone with K-9 Mail. Please excuse my brevity.

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Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check

[German]

On Fri, 13 Mar 2015 15:59:04 +0000
Neil Bothwick <neil@digimed.co.uk> wrote:

> On 13 March 2015 15:52:41 GMT+00:00, German <gentgerman@gmail.com> wrote:
> > This is very strange. When I boot up my box and login as a user I can
> > use screen. But if I booted up and logged in as root first and then su
> > user, the user have the error message displayed in the subject line.
> > Any ideas?
> > 
> > -- 
> > German <gentgerman@gmail.com>
> 
> Try su - l user. 

The same error

> -- 
> Sent from my Android phone with K-9 Mail. Please excuse my brevity.


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check

[Canek Peláez Valdés]

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On Fri, Mar 13, 2015 at 10:06 AM, German <gentgerman@gmail.com> wrote:
>
> On Fri, 13 Mar 2015 15:59:04 +0000
> Neil Bothwick <neil@digimed.co.uk> wrote:
>
> > On 13 March 2015 15:52:41 GMT+00:00, German <gentgerman@gmail.com>
wrote:
> > > This is very strange. When I boot up my box and login as a user I can
> > > use screen. But if I booted up and logged in as root first and then su
> > > user, the user have the error message displayed in the subject line.
> > > Any ideas?
> > >
> > > --
> > > German <gentgerman@gmail.com>
> >
> > Try su - l user.
>
> The same error

Are you using logind?

Regards.
--
Canek Peláez Valdés
Profesor de asignatura, Facultad de Ciencias
Universidad Nacional Autónoma de México

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Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check

[German]

On Fri, 13 Mar 2015 10:11:58 -0600
Canek Peláez Valdés <caneko@gmail.com> wrote:

> On Fri, Mar 13, 2015 at 10:06 AM, German <gentgerman@gmail.com> wrote:
> >
> > On Fri, 13 Mar 2015 15:59:04 +0000
> > Neil Bothwick <neil@digimed.co.uk> wrote:
> >
> > > On 13 March 2015 15:52:41 GMT+00:00, German <gentgerman@gmail.com>
> wrote:
> > > > This is very strange. When I boot up my box and login as a user I can
> > > > use screen. But if I booted up and logged in as root first and then su
> > > > user, the user have the error message displayed in the subject line.
> > > > Any ideas?
> > > >
> > > > --
> > > > German <gentgerman@gmail.com>
> > >
> > > Try su - l user.
> >
> > The same error
> 
> Are you using logind?

Good question. What is logind? How I can find out what am I using?
> 
> Regards.
> --
> Canek Peláez Valdés
> Profesor de asignatura, Facultad de Ciencias
> Universidad Nacional Autónoma de México


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check

[Canek Peláez Valdés]

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On Fri, Mar 13, 2015 at 10:22 AM, German <gentgerman@gmail.com> wrote:
[ ... ]
> > Are you using logind?
>
> Good question. What is logind? How I can find out what am I using?

If you are using systemd, you are using logind. Otherwise you are not.

Regards.
--
Canek Peláez Valdés
Profesor de asignatura, Facultad de Ciencias
Universidad Nacional Autónoma de México

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Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check

[German]

On Fri, 13 Mar 2015 10:31:11 -0600
Canek Peláez Valdés <caneko@gmail.com> wrote:

> On Fri, Mar 13, 2015 at 10:22 AM, German <gentgerman@gmail.com> wrote:
> [ ... ]
> > > Are you using logind?
> >
> > Good question. What is logind? How I can find out what am I using?
> 
> If you are using systemd, you are using logind. Otherwise you are not.

No, I am using openRC
> 
> Regards.
> --
> Canek Peláez Valdés
> Profesor de asignatura, Facultad de Ciencias
> Universidad Nacional Autónoma de México


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[German]

On Fri, 13 Mar 2015 15:59:04 +0000
Neil Bothwick <neil@digimed.co.uk> wrote:

> On 13 March 2015 15:52:41 GMT+00:00, German <gentgerman@gmail.com> wrote:
> > This is very strange. When I boot up my box and login as a user I can
> > use screen. But if I booted up and logged in as root first and then su
> > user, the user have the error message displayed in the subject line.
> > Any ideas?
> > 
> > -- 
> > German <gentgerman@gmail.com>
> 
> Try su - l user. 
> -- 
> Sent from my Android phone with K-9 Mail. Please excuse my brevity.

after searching, I found the following solution to chmod tty1, like so:
chmod o+rw /dev/tty1 and this worked, I was able to use screen as a user, however it doesn't stay permanently; after reboot, I got the same problem. How to chmod tty1 so changes stay permenently? Thanks



-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Yet another update]

[German]

On Fri, 13 Mar 2015 15:59:04 +0000
Neil Bothwick <neil@digimed.co.uk> wrote:

> On 13 March 2015 15:52:41 GMT+00:00, German <gentgerman@gmail.com> wrote:
> > This is very strange. When I boot up my box and login as a user I can
> > use screen. But if I booted up and logged in as root first and then su
> > user, the user have the error message displayed in the subject line.
> > Any ideas?
> > 
> > -- 
> > German <gentgerman@gmail.com>
> 
> Try su - l user. 

And after a little more searching interwebs I found this solution:
to run "script /dev/null" after I logged on to the user after root. This allows to launch screen
> -- 
> Sent from my Android phone with K-9 Mail. Please excuse my brevity.


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Neil Bothwick]

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On Fri, 13 Mar 2015 15:16:28 -0400, German wrote:

> after searching, I found the following solution to chmod tty1, like so:
> chmod o+rw /dev/tty1 and this worked, I was able to use screen as a
> user, however it doesn't stay permanently; after reboot, I got the same
> problem. How to chmod tty1 so changes stay permenently? Thanks

/dev/tty1 is already group writeable, so you should get the same result
by adding your user to the tty group.


-- 
Neil Bothwick

A Smith & Weason beats Four Aces everytime.

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Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[wabenbau]

Neil Bothwick <neil@digimed.co.uk> wrote:

> On Fri, 13 Mar 2015 15:16:28 -0400, German wrote:
> 
> > after searching, I found the following solution to chmod tty1, like
> > so: chmod o+rw /dev/tty1 and this worked, I was able to use screen
> > as a user, however it doesn't stay permanently; after reboot, I got
> > the same problem. How to chmod tty1 so changes stay permenently?
> > Thanks
> 
> /dev/tty1 is already group writeable, so you should get the same
> result by adding your user to the tty group.

When I logged in as regular user then ownership of the tty that I
used for log in is:

crw------- 1 wabe tty  4,  1 13. Mär 17:49 /dev/tty1

When I logged in as root, then owner is root (not surprising).

crw------- 1 root  tty  4,  2 13. Mär 23:47 /dev/tty2

Adding your user to group tty probably wouldn't resolve your problem
(not tested), because group doesn't have any rights.

So it seems that after login you first have to chmod 770 the tty before
you do a su - user (user have to be in group tty of course).

Maybe it would ease things when you write a little script for this
procedure.

--
Regards
wabe

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Peter Humphrey]

On Friday 13 March 2015 22:28:29 Neil Bothwick wrote:
> A Smith & Weason beats Four Aces everytime.

A Smith and what?

-- 
Rgds
Peter.

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[German]

On Sat, 14 Mar 2015 00:00:34 +0100
<wabenbau@gmail.com> wrote:

> Neil Bothwick <neil@digimed.co.uk> wrote:
> 
> > On Fri, 13 Mar 2015 15:16:28 -0400, German wrote:
> > 
> > > after searching, I found the following solution to chmod tty1, like
> > > so: chmod o+rw /dev/tty1 and this worked, I was able to use screen
> > > as a user, however it doesn't stay permanently; after reboot, I got
> > > the same problem. How to chmod tty1 so changes stay permenently?
> > > Thanks
> > 
> > /dev/tty1 is already group writeable, so you should get the same
> > result by adding your user to the tty group.
> 
> When I logged in as regular user then ownership of the tty that I
> used for log in is:
> 
> crw------- 1 wabe tty  4,  1 13. Mär 17:49 /dev/tty1
> 
> When I logged in as root, then owner is root (not surprising).
> 
> crw------- 1 root  tty  4,  2 13. Mär 23:47 /dev/tty2
> 
> Adding your user to group tty probably wouldn't resolve your problem
> (not tested), because group doesn't have any rights.

Yes, it didn't resolve my problem. The only solution for now is to run "script /dev/null".
Then I can run screen as a user. People are having the same problem all over the net.
> 
> So it seems that after login you first have to chmod 770 the tty before
> you do a su - user (user have to be in group tty of course).
> 
> Maybe it would ease things when you write a little script for this
> procedure.
> 
> --
> Regards
> wabe
> 


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Neil Bothwick]

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On Sat, 14 Mar 2015 00:00:34 +0100, wabenbau@gmail.com wrote:

> > /dev/tty1 is already group writeable, so you should get the same
> > result by adding your user to the tty group.  
> 
> When I logged in as regular user then ownership of the tty that I
> used for log in is:
> 
> crw------- 1 wabe tty  4,  1 13. Mär 17:49 /dev/tty1
> 
> When I logged in as root, then owner is root (not surprising).
> 
> crw------- 1 root  tty  4,  2 13. Mär 23:47 /dev/tty2

Interesting, here, as a normal user:

% ls -l /dev/tty1
crw--w---- 1 root tty 4, 1 Mar 13 22:26 /dev/tty1

> So it seems that after login you first have to chmod 770 the tty before
> you do a su - user (user have to be in group tty of course).
> 
> Maybe it would ease things when you write a little script for this
> procedure.

A udev rule would be less kludgy.


-- 
Neil Bothwick

I wonder how much deeper would the ocean be without sponges.

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Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Neil Bothwick]

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On Fri, 13 Mar 2015 23:10:22 +0000, Peter Humphrey wrote:

> On Friday 13 March 2015 22:28:29 Neil Bothwick wrote:
> > A Smith & Weason beats Four Aces everytime.  
> 
> A Smith and what?

You have far too much time on your hands!

I only steal taglines, I don't spell-check them.


-- 
Neil Bothwick

Will the last human please uninstall internet.exe.

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Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Neil Bothwick]

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On Fri, 13 Mar 2015 23:22:50 +0000, Neil Bothwick wrote:

> Interesting, here, as a normal user:
> 
> % ls -l /dev/tty1
> crw--w---- 1 root tty 4, 1 Mar 13 22:26 /dev/tty1
> 
> > So it seems that after login you first have to chmod 770 the tty
> > before you do a su - user (user have to be in group tty of course).
> > 
> > Maybe it would ease things when you write a little script for this
> > procedure.  
> 
> A udev rule would be less kludgy.

I have this in /lib/udev/rules.d/50-udev-default.rules:

SUBSYSTEM=="tty", KERNEL=="tty[0-9]*", GROUP="tty", MODE="0620"


-- 
Neil Bothwick

Windows Error #09: Game Over. Exiting Windows.

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Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[German]

On Fri, 13 Mar 2015 23:28:32 +0000
Neil Bothwick <neil@digimed.co.uk> wrote:

> On Fri, 13 Mar 2015 23:22:50 +0000, Neil Bothwick wrote:
> 
> > Interesting, here, as a normal user:
> > 
> > % ls -l /dev/tty1
> > crw--w---- 1 root tty 4, 1 Mar 13 22:26 /dev/tty1
> > 
> > > So it seems that after login you first have to chmod 770 the tty
> > > before you do a su - user (user have to be in group tty of course).
> > > 
> > > Maybe it would ease things when you write a little script for this
> > > procedure.  
> > 
> > A udev rule would be less kludgy.
> 
> I have this in /lib/udev/rules.d/50-udev-default.rules:
> 
> SUBSYSTEM=="tty", KERNEL=="tty[0-9]*", GROUP="tty", MODE="0620"

thanks, I'll try that as well
> 
> 
> -- 
> Neil Bothwick
> 
> Windows Error #09: Game Over. Exiting Windows.


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Peter Humphrey]

On Friday 13 March 2015 23:25:21 Neil Bothwick wrote:
> On Fri, 13 Mar 2015 23:10:22 +0000, Peter Humphrey wrote:
> > On Friday 13 March 2015 22:28:29 Neil Bothwick wrote:
> > > A Smith & Weason beats Four Aces everytime.
> > 
> > A Smith and what?
> 
> You have far too much time on your hands!

True. It can easily happen once you've been retired for 17 years. :(

> I only steal taglines, I don't spell-check them.

To each his own ;)

-- 
Rgds
Peter.

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Peter Humphrey]

On Friday 13 March 2015 23:28:32 Neil Bothwick wrote:

> I have this in /lib/udev/rules.d/50-udev-default.rules:
> 
> SUBSYSTEM=="tty", KERNEL=="tty[0-9]*", GROUP="tty", MODE="0620"

# grep tty /lib/udev/rules.d/50-udev-default.rules
SUBSYSTEM=="tty", KERNEL=="ptmx", GROUP="tty", MODE="0666"
SUBSYSTEM=="tty", KERNEL=="tty", GROUP="tty", MODE="0666"
SUBSYSTEM=="tty", KERNEL=="tty[0-9]*", GROUP="tty", MODE="0620"
SUBSYSTEM=="tty", KERNEL=="sclp_line[0-9]*", GROUP="tty", MODE="0620"
SUBSYSTEM=="tty", KERNEL=="ttysclp[0-9]*", GROUP="tty", MODE="0620"
SUBSYSTEM=="tty", KERNEL=="3270/tty[0-9]*", GROUP="tty", MODE="0620"
SUBSYSTEM=="vc", KERNEL=="vcs*|vcsa*", GROUP="tty"
KERNEL=="tty[A-Z]*[0-9]|pppox[0-9]*|ircomm[0-9]*|noz[0-9]*|rfcomm[0-9]*", GROUP="uucp"

Can't say where all those came from.

-- 
Rgds
Peter.

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[wabenbau]

Peter Humphrey <peter@prh.myzen.co.uk> wrote:

> On Friday 13 March 2015 23:28:32 Neil Bothwick wrote:
> 
> > I have this in /lib/udev/rules.d/50-udev-default.rules:
> > 
> > SUBSYSTEM=="tty", KERNEL=="tty[0-9]*", GROUP="tty", MODE="0620"
> 
> # grep tty /lib/udev/rules.d/50-udev-default.rules
> SUBSYSTEM=="tty", KERNEL=="ptmx", GROUP="tty", MODE="0666"
> SUBSYSTEM=="tty", KERNEL=="tty", GROUP="tty", MODE="0666"
> SUBSYSTEM=="tty", KERNEL=="tty[0-9]*", GROUP="tty", MODE="0620"
> SUBSYSTEM=="tty", KERNEL=="sclp_line[0-9]*", GROUP="tty", MODE="0620"
> SUBSYSTEM=="tty", KERNEL=="ttysclp[0-9]*", GROUP="tty", MODE="0620"
> SUBSYSTEM=="tty", KERNEL=="3270/tty[0-9]*", GROUP="tty", MODE="0620"
> SUBSYSTEM=="vc", KERNEL=="vcs*|vcsa*", GROUP="tty"
> KERNEL=="tty[A-Z]*[0-9]|pppox[0-9]*|ircomm[0-9]*|noz[0-9]*|rfcomm[0-9]*",
> GROUP="uucp"
> 
> Can't say where all those came from.
> 

I have the same entries in /lib/udev/rules.d/50-udev-default.rules but
nevertheless after login the permissions for group tty are gone.

--
Regards
wabe

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[wabenbau]

<wabenbau@gmail.com> wrote:

> Peter Humphrey <peter@prh.myzen.co.uk> wrote:
> 
> > On Friday 13 March 2015 23:28:32 Neil Bothwick wrote:
> > 
> > > I have this in /lib/udev/rules.d/50-udev-default.rules:
> > > 
> > > SUBSYSTEM=="tty", KERNEL=="tty[0-9]*", GROUP="tty", MODE="0620"
> > 
> > # grep tty /lib/udev/rules.d/50-udev-default.rules
> > SUBSYSTEM=="tty", KERNEL=="ptmx", GROUP="tty", MODE="0666"
> > SUBSYSTEM=="tty", KERNEL=="tty", GROUP="tty", MODE="0666"
> > SUBSYSTEM=="tty", KERNEL=="tty[0-9]*", GROUP="tty", MODE="0620"
> > SUBSYSTEM=="tty", KERNEL=="sclp_line[0-9]*", GROUP="tty",
> > MODE="0620" SUBSYSTEM=="tty", KERNEL=="ttysclp[0-9]*", GROUP="tty",
> > MODE="0620" SUBSYSTEM=="tty", KERNEL=="3270/tty[0-9]*",
> > GROUP="tty", MODE="0620" SUBSYSTEM=="vc", KERNEL=="vcs*|vcsa*",
> > GROUP="tty"
> > KERNEL=="tty[A-Z]*[0-9]|pppox[0-9]*|ircomm[0-9]*|noz[0-9]*|rfcomm[0-9]*",
> > GROUP="uucp"
> > 
> > Can't say where all those came from.
> > 
> 
> I have the same entries in /lib/udev/rules.d/50-udev-default.rules but
> nevertheless after login the permissions for group tty are gone.

Before login:
crw--w---- 1 root  tty  4, 10 13. Mär 15:12 /dev/tty4

After login:
crw------- 1 wabe tty  4,  1 13. Mär 17:49 /dev/tty1

--
Regards
wabe

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[wabenbau]

<wabenbau@gmail.com> wrote:

> Neil Bothwick <neil@digimed.co.uk> wrote:
> 
> > On Fri, 13 Mar 2015 15:16:28 -0400, German wrote:
> > 
> > > after searching, I found the following solution to chmod tty1,
> > > like so: chmod o+rw /dev/tty1 and this worked, I was able to use
> > > screen as a user, however it doesn't stay permanently; after
> > > reboot, I got the same problem. How to chmod tty1 so changes stay
> > > permenently? Thanks
> > 
> > /dev/tty1 is already group writeable, so you should get the same
> > result by adding your user to the tty group.
> 
> When I logged in as regular user then ownership of the tty that I
> used for log in is:
> 
> crw------- 1 wabe tty  4,  1 13. Mär 17:49 /dev/tty1
> 
> When I logged in as root, then owner is root (not surprising).
> 
> crw------- 1 root  tty  4,  2 13. Mär 23:47 /dev/tty2
> 
> Adding your user to group tty probably wouldn't resolve your problem
> (not tested), because group doesn't have any rights.
> 
> So it seems that after login you first have to chmod 770 the tty
> before you do a su - user (user have to be in group tty of course).

Forget about "chmod 770". Better do a "chmod g+rw". :-)

--
Regards
wabe

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[German]

On Sat, 14 Mar 2015 01:16:32 +0100
<wabenbau@gmail.com> wrote:

> <wabenbau@gmail.com> wrote:
> 
> > Neil Bothwick <neil@digimed.co.uk> wrote:
> > 
> > > On Fri, 13 Mar 2015 15:16:28 -0400, German wrote:
> > > 
> > > > after searching, I found the following solution to chmod tty1,
> > > > like so: chmod o+rw /dev/tty1 and this worked, I was able to use
> > > > screen as a user, however it doesn't stay permanently; after
> > > > reboot, I got the same problem. How to chmod tty1 so changes stay
> > > > permenently? Thanks
> > > 
> > > /dev/tty1 is already group writeable, so you should get the same
> > > result by adding your user to the tty group.
> > 
> > When I logged in as regular user then ownership of the tty that I
> > used for log in is:
> > 
> > crw------- 1 wabe tty  4,  1 13. Mär 17:49 /dev/tty1
> > 
> > When I logged in as root, then owner is root (not surprising).
> > 
> > crw------- 1 root  tty  4,  2 13. Mär 23:47 /dev/tty2
> > 
> > Adding your user to group tty probably wouldn't resolve your problem
> > (not tested), because group doesn't have any rights.
> > 
> > So it seems that after login you first have to chmod 770 the tty
> > before you do a su - user (user have to be in group tty of course).
> 
> Forget about "chmod 770". Better do a "chmod g+rw". :-)

Tried it, it also doesn't stay permanently. OK, no solution :(
> 
> --
> Regards
> wabe
> 


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Neil Bothwick]

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On Sat, 14 Mar 2015 06:08:34 -0400, German wrote:

> > Forget about "chmod 770". Better do a "chmod g+rw". :-)  
> 
> Tried it, it also doesn't stay permanently. OK, no solution :(

The correct solution is a udev rule, but it appears that something may be
overriding that when you login. A kludgy solution is to add the chmod
command to ~/.bash_profile.


-- 
Neil Bothwick

Veni, vermini, vomui
I came, I got ratted, I threw up

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Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[German]

On Sat, 14 Mar 2015 10:33:59 +0000
Neil Bothwick <neil@digimed.co.uk> wrote:

> On Sat, 14 Mar 2015 06:08:34 -0400, German wrote:
> 
> > > Forget about "chmod 770". Better do a "chmod g+rw". :-)  
> > 
> > Tried it, it also doesn't stay permanently. OK, no solution :(
> 
> The correct solution is a udev rule, but it appears that something may be
> overriding that when you login.

I have the same udev rule. Yes, something is overriding it.

 A kludgy solution is to add the chmod
> command to ~/.bash_profile.

thanks
> 
> 
> -- 
> Neil Bothwick
> 
> Veni, vermini, vomui
> I came, I got ratted, I threw up


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Tom H]

On Fri, Mar 13, 2015 at 8:14 PM,  <wabenbau@gmail.com> wrote:
> <wabenbau@gmail.com> wrote:
>> Peter Humphrey <peter@prh.myzen.co.uk> wrote:
>>> On Friday 13 March 2015 23:28:32 Neil Bothwick wrote:
>>>>
>>>> I have this in /lib/udev/rules.d/50-udev-default.rules:
>>>>
>>>> SUBSYSTEM=="tty", KERNEL=="tty[0-9]*", GROUP="tty", MODE="0620"
>>>
>>> # grep tty /lib/udev/rules.d/50-udev-default.rules
>>> SUBSYSTEM=="tty", KERNEL=="ptmx", GROUP="tty", MODE="0666"
>>> SUBSYSTEM=="tty", KERNEL=="tty", GROUP="tty", MODE="0666"
>>> SUBSYSTEM=="tty", KERNEL=="tty[0-9]*", GROUP="tty", MODE="0620"
>>> SUBSYSTEM=="tty", KERNEL=="sclp_line[0-9]*", GROUP="tty",
>>> MODE="0620" SUBSYSTEM=="tty", KERNEL=="ttysclp[0-9]*", GROUP="tty",
>>> MODE="0620" SUBSYSTEM=="tty", KERNEL=="3270/tty[0-9]*",
>>> GROUP="tty", MODE="0620" SUBSYSTEM=="vc", KERNEL=="vcs*|vcsa*",
>>> GROUP="tty"
>>> KERNEL=="tty[A-Z]*[0-9]|pppox[0-9]*|ircomm[0-9]*|noz[0-9]*|rfcomm[0-9]*",
>>> GROUP="uucp"
>>>
>>> Can't say where all those came from.
>>
>> I have the same entries in /lib/udev/rules.d/50-udev-default.rules but
>> nevertheless after login the permissions for group tty are gone.
>
> Before login:
> crw--w---- 1 root  tty  4, 10 13. Mär 15:12 /dev/tty4
>
> After login:
> crw------- 1 wabe tty  4,  1 13. Mär 17:49 /dev/tty1

Same here.

IIRC, on a vt, login does the chown and agetty does the chmod.

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Tom H]

On Sat, Mar 14, 2015 at 6:08 AM, German <gentgerman@gmail.com> wrote:
> On Sat, 14 Mar 2015 01:16:32 +0100 <wabenbau@gmail.com> wrote:
>> <wabenbau@gmail.com> wrote:
>>>
>>> So it seems that after login you first have to chmod 770 the tty
>>> before you do a su - user (user have to be in group tty of course).
>>
>> Forget about "chmod 770". Better do a "chmod g+rw". :-)
>
> Tried it, it also doesn't stay permanently. OK, no solution :(

Because "/dev" is recreated at every boot.

You have to override the tty rule(s) in
"/lib/udev/rules.d/50-udev-default.rules" with a rule/rules in
"/etc/udev/rules.d/".

Since the 50-udev-default.rules is an upstream rule that's shipped by
all the distros that I use, perhaps you should track down why this is
happening rather than overriding it.

Canek had asked whether you were using systemd and therefore logind.
Since you're using openrc, perhaps you should check whether installing
consolekit is a fix because it's the precursor to logind.

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Matti Nykyri]

> On Mar 14, 2015, at 12:47, German <gentgerman@gmail.com> wrote:
> 
> On Sat, 14 Mar 2015 10:33:59 +0000
> Neil Bothwick <neil@digimed.co.uk> wrote:
> 
>> On Sat, 14 Mar 2015 06:08:34 -0400, German wrote:
>> 
>>>> Forget about "chmod 770". Better do a "chmod g+rw". :-)  
>>> 
>>> Tried it, it also doesn't stay permanently. OK, no solution :(
>> 
>> The correct solution is a udev rule, but it appears that something may be
>> overriding that when you login.
> 
> I have the same udev rule. Yes, something is overriding it.
> 
> A kludgy solution is to add the chmod
>> command to ~/.bash_profile.

Don't hit your head to a brick wall. A small strace to the login process reveals that login set things as you tell it to in /etc/login.defs

In this file change the line:
TTYPERM 0600
To:
TTYPERM 0620

And your problem is fixed.

The problem has nothing to do with udev. If you don't like a volatile /dev just remove udev and create everything you wan't by hand (not recommended ;)

Another thing i'm puzzled by is, why do you wan't to login as root and the su to someone else? I usually do it the other way around...

-- 
-Matti

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Alan McKinnon]

On 14/03/2015 20:53, Matti Nykyri wrote:
>> On Mar 14, 2015, at 12:47, German <gentgerman@gmail.com> wrote:
>>
>> On Sat, 14 Mar 2015 10:33:59 +0000
>> Neil Bothwick <neil@digimed.co.uk> wrote:
>>
>>> On Sat, 14 Mar 2015 06:08:34 -0400, German wrote:
>>>
>>>>> Forget about "chmod 770". Better do a "chmod g+rw". :-)  
>>>>
>>>> Tried it, it also doesn't stay permanently. OK, no solution :(
>>>
>>> The correct solution is a udev rule, but it appears that something may be
>>> overriding that when you login.
>>
>> I have the same udev rule. Yes, something is overriding it.
>>
>> A kludgy solution is to add the chmod
>>> command to ~/.bash_profile.
> 
> Don't hit your head to a brick wall. A small strace to the login process reveals that login set things as you tell it to in /etc/login.defs
> 
> In this file change the line:
> TTYPERM 0600
> To:
> TTYPERM 0620
> 
> And your problem is fixed.
> 
> The problem has nothing to do with udev. If you don't like a volatile /dev just remove udev and create everything you wan't by hand (not recommended ;)
> 
> Another thing i'm puzzled by is, why do you wan't to login as root and the su to someone else? I usually do it the other way around...
> 


There is a use-case for doing it (but I highly doubt the OP is using it)

Take a system user like eg sybase or rancid. You can't run those apps as
root (it messes with permissions etc, and some scripts detect EUID 0 and
refuse to run). The sybase and rancid users can't log in at all, and the
system is set up so I can't su as me to that account directly. So I have
to go from my login account to root then drop privs to the system user.

-- 
Alan McKinnon
alan.mckinnon@gmail.com

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Matti Nykyri]

> On Mar 14, 2015, at 21:23, Alan McKinnon <alan.mckinnon@gmail.com> wrote:
> 
> There is a use-case for doing it (but I highly doubt the OP is using it)

Yes. I was just thinking if the OP has a miss configuration in /etc/security/access.conf and can't login as himself on a local console. And that way is forced to use root login and then su.

-- 
-Matti

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Peter Humphrey]

On Saturday 14 March 2015 20:53:44 Matti Nykyri wrote:

> Don't hit your head to a brick wall. A small strace to the login
> process reveals that login set things as you tell it to in
> /etc/login.defs
> 
> In this file change the line:
> TTYPERM 0600
> To:
> TTYPERM 0620
> 
> And your problem is fixed.

Why should he need to do that? I have 0600 here with no problems.

-- 
Rgds
Peter.

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[German]

On Sat, 14 Mar 2015 10:33:59 +0000
Neil Bothwick <neil@digimed.co.uk> wrote:

> On Sat, 14 Mar 2015 06:08:34 -0400, German wrote:
> 
> > > Forget about "chmod 770". Better do a "chmod g+rw". :-)  
> > 
> > Tried it, it also doesn't stay permanently. OK, no solution :(
> 
> The correct solution is a udev rule, but it appears that something may be
> overriding that when you login. A kludgy solution is to add the chmod
> command to ~/.bash_profile.
> 
The system doesn't appear to have ~/.bash_profile Is that sufficient to run nano -w ~/.bash_profile and fill in the blanks?

> 
> -- 
> Neil Bothwick
> 
> Veni, vermini, vomui
> I came, I got ratted, I threw up


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[German]

On Sat, 14 Mar 2015 14:03:21 -0400
Tom H <tomh0665@gmail.com> wrote:

> On Sat, Mar 14, 2015 at 6:08 AM, German <gentgerman@gmail.com> wrote:
> > On Sat, 14 Mar 2015 01:16:32 +0100 <wabenbau@gmail.com> wrote:
> >> <wabenbau@gmail.com> wrote:
> >>>
> >>> So it seems that after login you first have to chmod 770 the tty
> >>> before you do a su - user (user have to be in group tty of course).
> >>
> >> Forget about "chmod 770". Better do a "chmod g+rw". :-)
> >
> > Tried it, it also doesn't stay permanently. OK, no solution :(
> 
> Because "/dev" is recreated at every boot.
> 
> You have to override the tty rule(s) in
> "/lib/udev/rules.d/50-udev-default.rules" with a rule/rules in
> "/etc/udev/rules.d/".
> 
> Since the 50-udev-default.rules is an upstream rule that's shipped by
> all the distros that I use, perhaps you should track down why this is
> happening rather than overriding it.
> 
> Canek had asked whether you were using systemd and therefore logind.
> Since you're using openrc, perhaps you should check whether installing
> consolekit is a fix because it's the precursor to logind.

Just to emerge consolekit and see if it fix it?
> 


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[German]

On Sat, 14 Mar 2015 20:53:44 +0200
Matti Nykyri <matti.nykyri@iki.fi> wrote:

> > On Mar 14, 2015, at 12:47, German <gentgerman@gmail.com> wrote:
> > 
> > On Sat, 14 Mar 2015 10:33:59 +0000
> > Neil Bothwick <neil@digimed.co.uk> wrote:
> > 
> >> On Sat, 14 Mar 2015 06:08:34 -0400, German wrote:
> >> 
> >>>> Forget about "chmod 770". Better do a "chmod g+rw". :-)  
> >>> 
> >>> Tried it, it also doesn't stay permanently. OK, no solution :(
> >> 
> >> The correct solution is a udev rule, but it appears that something may be
> >> overriding that when you login.
> > 
> > I have the same udev rule. Yes, something is overriding it.
> > 
> > A kludgy solution is to add the chmod
> >> command to ~/.bash_profile.
> 
> Don't hit your head to a brick wall. A small strace to the login process reveals that login set things as you tell it to in /etc/login.defs
> 
> In this file change the line:
> TTYPERM 0600
> To:
> TTYPERM 0620
> 
> And your problem is fixed.

Sorry, this didn't fix it
> 
> The problem has nothing to do with udev. If you don't like a volatile /dev just remove udev and create everything you wan't by hand (not recommended ;)
> 
> Another thing i'm puzzled by is, why do you wan't to login as root and the su to someone else? I usually do it the other way around...
> 
> -- 
> -Matti
> 
> 
> 


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Matti Nykyri]

> On Mar 17, 2015, at 18:11, German <gentgerman@gmail.com> wrote:
> 
>> Don't hit your head to a brick wall. A small strace to the login process reveals that login set things as you tell it to in /etc/login.defs
>> 
>> In this file change the line:
>> TTYPERM 0600
>> To:
>> TTYPERM 0620
>> 
>> And your problem is fixed.
> 
> Sorry, this didn't fix it

Yes. Sorry. The mode was wrong:

TTYPERM 660

Will fix it, if your screen is setgid tty and ttyX is gid tty. If not then:

TTYPERM 666

Will fix it, but also your tty will be world readable. If you don't consider that too big security risk, then just go ahead.

-- 
-Matti

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[German]

On Tue, 17 Mar 2015 19:16:42 +0200
Matti Nykyri <matti.nykyri@iki.fi> wrote:

> > On Mar 17, 2015, at 18:11, German <gentgerman@gmail.com> wrote:
> > 
> >> Don't hit your head to a brick wall. A small strace to the login process reveals that login set things as you tell it to in /etc/login.defs
> >> 
> >> In this file change the line:
> >> TTYPERM 0600
> >> To:
> >> TTYPERM 0620
> >> 
> >> And your problem is fixed.
> > 
> > Sorry, this didn't fix it
> 
> Yes. Sorry. The mode was wrong:
> 
> TTYPERM 660
> 
> Will fix it, if your screen is setgid tty and ttyX is gid tty. If not then:
> 
> TTYPERM 666
> 
> Will fix it, but also your tty will be world readable. If you don't consider that too big security risk, then just go

Neither 660 nor 666 fixed it. Sorry :(

 ahead.
> 
> -- 
> -Matti
> 


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Matti Nykyri]

> On Mar 17, 2015, at 19:33, German <gentgerman@gmail.com> wrote:
> 
> On Tue, 17 Mar 2015 19:16:42 +0200
> Matti Nykyri <matti.nykyri@iki.fi> wrote:
> 
>>>> On Mar 17, 2015, at 18:11, German <gentgerman@gmail.com> wrote:
>>>> 
>>>> Don't hit your head to a brick wall. A small strace to the login process reveals that login set things as you tell it to in /etc/login.defs
>>>> 
>>>> In this file change the line:
>>>> TTYPERM 0600
>>>> To:
>>>> TTYPERM 0620
>>>> 
>>>> And your problem is fixed.
>>> 
>>> Sorry, this didn't fix it
>> 
>> Yes. Sorry. The mode was wrong:
>> 
>> TTYPERM 660
>> 
>> Will fix it, if your screen is setgid tty and ttyX is gid tty. If not then:
>> 
>> TTYPERM 666
>> 
>> Will fix it, but also your tty will be world readable. If you don't consider that too big security risk, then just go
> 
> Neither 660 nor 666 fixed it. Sorry :(

If you have:

TTYPERM 0666

And logout and login. What mode and ownership do you have in you tty (/dev/ttyX)?

-- 
-Matti

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[German]

On Tue, 17 Mar 2015 20:39:46 +0200
Matti Nykyri <matti.nykyri@iki.fi> wrote:

> > On Mar 17, 2015, at 19:33, German <gentgerman@gmail.com> wrote:
> > 
> > On Tue, 17 Mar 2015 19:16:42 +0200
> > Matti Nykyri <matti.nykyri@iki.fi> wrote:
> > 
> >>>> On Mar 17, 2015, at 18:11, German <gentgerman@gmail.com> wrote:
> >>>> 
> >>>> Don't hit your head to a brick wall. A small strace to the login process reveals that login set things as you tell it to in /etc/login.defs
> >>>> 
> >>>> In this file change the line:
> >>>> TTYPERM 0600
> >>>> To:
> >>>> TTYPERM 0620
> >>>> 
> >>>> And your problem is fixed.
> >>> 
> >>> Sorry, this didn't fix it
> >> 
> >> Yes. Sorry. The mode was wrong:
> >> 
> >> TTYPERM 660
> >> 
> >> Will fix it, if your screen is setgid tty and ttyX is gid tty. If not then:
> >> 
> >> TTYPERM 666
> >> 
> >> Will fix it, but also your tty will be world readable. If you don't consider that too big security risk, then just go
> > 
> > Neither 660 nor 666 fixed it. Sorry :(
> 
> If you have:
> 
> TTYPERM 0666
> 
> And logout and login. What mode and ownership do you have in you tty (/dev/ttyX)?

Ok, Matti, 0666 worked, now I can run screen as a user. Thanks. Do you think I have to try to run it 0660? Will it be less security risk?
> 
> -- 
> -Matti
> 
> 
> 


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Matti Nykyri]

> On Mar 17, 2015, at 21:52, German <gentgerman@gmail.com> wrote:
> 
> On Tue, 17 Mar 2015 20:39:46 +0200
> Matti Nykyri <matti.nykyri@iki.fi> wrote:
> 
>>> On Mar 17, 2015, at 19:33, German <gentgerman@gmail.com> wrote:
>>> 
>>> On Tue, 17 Mar 2015 19:16:42 +0200
>>> Matti Nykyri <matti.nykyri@iki.fi> wrote:
>>> 
>>>>>> On Mar 17, 2015, at 18:11, German <gentgerman@gmail.com> wrote:
>>>>>> 
>>>>>> Don't hit your head to a brick wall. A small strace to the login process reveals that login set things as you tell it to in /etc/login.defs
>>>>>> 
>>>>>> In this file change the line:
>>>>>> TTYPERM 0600
>>>>>> To:
>>>>>> TTYPERM 0620
>>>>>> 
>>>>>> And your problem is fixed.
>>>>> 
>>>>> Sorry, this didn't fix it
>>>> 
>>>> Yes. Sorry. The mode was wrong:
>>>> 
>>>> TTYPERM 660
>>>> 
>>>> Will fix it, if your screen is setgid tty and ttyX is gid tty. If not then:
>>>> 
>>>> TTYPERM 666
>>>> 
>>>> Will fix it, but also your tty will be world readable. If you don't consider that too big security risk, then just go
>>> 
>>> Neither 660 nor 666 fixed it. Sorry :(
>> 
>> If you have:
>> 
>> TTYPERM 0666
>> 
>> And logout and login. What mode and ownership do you have in you tty (/dev/ttyX)?
> 
> Ok, Matti, 0666 worked, now I can run screen as a user. Thanks. Do you think I have to try to run it 0660? Will it be less security risk?

Well 0666 = 666. The reason it now worked is because you logged out and then back in. This is becaus login program only reads the /etc/login.defs-file when you login.

With mode 0666 every user on your computer can read everything (every character) you have in your screen (so not much privacy). If you set:

TTYGROUP utmp
TTYPERM 0660

And have:

-rwxr-sr-x root utmp /usr/bin/screen

Everything will also work and you have more privacy.

When /bin/login us run it changes ownership of the tty to the user who logs in. Su -l does not do this. That is why the screen doesn't work. ConsoleKit is the program that is responsible for many of these permission changes. Do you have that installed?

-- 
-Matti

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[German]

On Tue, 17 Mar 2015 22:14:03 +0200
Matti Nykyri <matti.nykyri@iki.fi> wrote:

> > On Mar 17, 2015, at 21:52, German <gentgerman@gmail.com> wrote:
> > 
> > On Tue, 17 Mar 2015 20:39:46 +0200
> > Matti Nykyri <matti.nykyri@iki.fi> wrote:
> > 
> >>> On Mar 17, 2015, at 19:33, German <gentgerman@gmail.com> wrote:
> >>> 
> >>> On Tue, 17 Mar 2015 19:16:42 +0200
> >>> Matti Nykyri <matti.nykyri@iki.fi> wrote:
> >>> 
> >>>>>> On Mar 17, 2015, at 18:11, German <gentgerman@gmail.com> wrote:
> >>>>>> 
> >>>>>> Don't hit your head to a brick wall. A small strace to the login process reveals that login set things as you tell it to in /etc/login.defs
> >>>>>> 
> >>>>>> In this file change the line:
> >>>>>> TTYPERM 0600
> >>>>>> To:
> >>>>>> TTYPERM 0620
> >>>>>> 
> >>>>>> And your problem is fixed.
> >>>>> 
> >>>>> Sorry, this didn't fix it
> >>>> 
> >>>> Yes. Sorry. The mode was wrong:
> >>>> 
> >>>> TTYPERM 660
> >>>> 
> >>>> Will fix it, if your screen is setgid tty and ttyX is gid tty. If not then:
> >>>> 
> >>>> TTYPERM 666
> >>>> 
> >>>> Will fix it, but also your tty will be world readable. If you don't consider that too big security risk, then just go
> >>> 
> >>> Neither 660 nor 666 fixed it. Sorry :(
> >> 
> >> If you have:
> >> 
> >> TTYPERM 0666
> >> 
> >> And logout and login. What mode and ownership do you have in you tty (/dev/ttyX)?
> > 
> > Ok, Matti, 0666 worked, now I can run screen as a user. Thanks. Do you think I have to try to run it 0660? Will it be less security risk?
> 
> Well 0666 = 666. The reason it now worked is because you logged out and then back in. This is becaus login program only reads the /etc/login.defs-file when you login.
> 
I pretty much sure that I logged out and logged in back after setting to 666 and it didn't work, but setting to 0666 has worked. Strange.

> With mode 0666 every user on your computer can read everything (every character) you have in your screen (so not much privacy). If you set:
> 
> TTYGROUP utmp
> TTYPERM 0660
> 
> And have:
> 
> -rwxr-sr-x root utmp /usr/bin/screen
> 
> Everything will also work and you have more privacy.

I'll be the only user on this system. So I guess I can leave it as it is.

> 
> When /bin/login us run it changes ownership of the tty to the user who logs in. Su -l does not do this. That is why the screen doesn't work. ConsoleKit is the program that is responsible for many of these permission changes. Do you have that installed?

I think ConsoleKit was installed when I emerged screen, but I am not sure.
> 
> -- 
> -Matti
> 
> 
> 
> 


-- 
German <gentgerman@gmail.com>

Re: [gentoo-user] Screen: Cannot open your terminal '/dev/tty1' - please check [Update]

[Tom H]

On Tue, Mar 17, 2015 at 11:42 AM, German <gentgerman@gmail.com> wrote:
> On Sat, 14 Mar 2015 14:03:21 -0400, Tom H <tomh0665@gmail.com> wrote:
>>
>> Canek had asked whether you were using systemd and therefore logind.
>> Since you're using openrc, perhaps you should check whether installing
>> consolekit is a fix because it's the precursor to logind.
>
> Just to emerge consolekit and see if it fix it?

Yes. This is this is the type scenario that it's meant to handle.

http://www.freedesktop.org/wiki/Software/ConsoleKit/