[gentoo-user] where is /dev/ttyS* ?

[gentoo-user] where is /dev/ttyS* ?

[maxim wexler]

Hello everybody,

When I try to dialup the 'net on a fresh 2.6.16
install I get:

#pon <isp>
/usr/sbin/pppd: In file /etc/peers/hd: unrecognized
option '/dev/ttyS0'

Sure enough, there's no such file, just /dev/tty, 0, 1
... On my 2.6.12 and 2.6.15 boxen /dev/ttyS0 is a
sym-link to tts/0 and I can dial out no problem. On
the 2.6.16 box ls /dev/tty* just reveals a numerical,
unlinked list. /dev/ttyS* no longer exists.

Here's what pppconfig wrote(identical on all my PCs):

sarawak heathen # cat /etc/ppp/peers/hd
# This optionfile was generated by pppconfig 2.3.10. 
# 
#
hide-password 
noauth
connect "/usr/sbin/chat -v -f /etc/chatscripts/hd"
debug
/dev/ttyS0
115200
defaultroute
noipdefault 
user "entbloc1@qc.aira.com"
remotename hd
ipparam hd

As it stands now I can dial out from the 2.6.16 box
only if I boot the install-cd and copy over from
another drive my ppp config files and use the pppd
that comes with the install-cd. And *it* uses
/dev/ttyS0. If I try to go with /dev/tty or /dev/tty0
on the fresh install without benefit of install-cd,
nothing happens -- no error on the console or the
logs, no dialtone, nothing.

Yes, I did mknod /dev/ppp c 108 0 

and here's lsmod copied over from the 2.6.16 box.

heathen@sarawak ~ $ cat /floppy/lsmod
Module                  Size  Used by
ppp_async              11840  0 
crc_ccitt               1952  1 ppp_async
ppp_deflate             6176  0 
zlib_deflate           21528  1 ppp_deflate
zlib_inflate           17440  1 ppp_deflate
bsd_comp                5952  0 
ppp_generic            26484  3
ppp_async,ppp_deflate,bsd_comp
slhc                    6912  1 ppp_generic
rtc                    14452  0 
usbcore               148804  1 
unix                   29712  4 

I'm using ppp-2.4.3-r14. When I emerged it I was told
that I must 

emerge -u '>=sys-apps/baselayout-1.12.0_pre11'

as well as add bsd_comp and ppp_deflate to my kernel
config. Both of which I did.

So, I'm stuck

-mw

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Re: [gentoo-user] where is /dev/ttyS* ?

[Farhan Ahmed]

[-- Attachment #1: Type: text/plain, Size: 3031 bytes --]

maxim wexler wrote:
> Hello everybody,
> 
> When I try to dialup the 'net on a fresh 2.6.16
> install I get:
> 
> #pon <isp>
> /usr/sbin/pppd: In file /etc/peers/hd: unrecognized
> option '/dev/ttyS0'
> 
> Sure enough, there's no such file, just /dev/tty, 0, 1
> ... On my 2.6.12 and 2.6.15 boxen /dev/ttyS0 is a
> sym-link to tts/0 and I can dial out no problem. On
> the 2.6.16 box ls /dev/tty* just reveals a numerical,
> unlinked list. /dev/ttyS* no longer exists.

Hi,
	I suppose you've connected your modem to a serial port (COMx
under windows, /dev/ttySx under linux). /dev/ttyx is a terminal, i dont
think modem is that device. Why dont you create a sym-link /dev/ttySx 
to /dev/tts/x?

> 
> Here's what pppconfig wrote(identical on all my PCs):
> 
> sarawak heathen # cat /etc/ppp/peers/hd
> # This optionfile was generated by pppconfig 2.3.10. 
> # 
> #
> hide-password 
> noauth
> connect "/usr/sbin/chat -v -f /etc/chatscripts/hd"
> debug
> /dev/ttyS0
> 115200
> defaultroute
> noipdefault 
> user "entbloc1@qc.aira.com"
> remotename hd
> ipparam hd

Well learn to substitue a nonsence id for your real id (something like
xyz will do) when posting your config's.

> 
> As it stands now I can dial out from the 2.6.16 box
> only if I boot the install-cd and copy over from
> another drive my ppp config files and use the pppd
> that comes with the install-cd. And *it* uses
> /dev/ttyS0. If I try to go with /dev/tty or /dev/tty0
> on the fresh install without benefit of install-cd,
> nothing happens -- no error on the console or the
> logs, no dialtone, nothing.

Again /dev/ttyx is a terminal, u can check that by doing 
	'echo "hi" >> /dev/tty1'
as root. You'll see 'hi' being printed in tty1. A dialup modem usually
connects to the serial port (i.e., /dev/ttyS0). If this device does not
exist create a symlink to tts/0.

> 
> Yes, I did mknod /dev/ppp c 108 0 
> 
> and here's lsmod copied over from the 2.6.16 box.
> 
> heathen@sarawak ~ $ cat /floppy/lsmod
> Module                  Size  Used by
> ppp_async              11840  0 
> crc_ccitt               1952  1 ppp_async
> ppp_deflate             6176  0 
> zlib_deflate           21528  1 ppp_deflate
> zlib_inflate           17440  1 ppp_deflate
> bsd_comp                5952  0 
> ppp_generic            26484  3
> ppp_async,ppp_deflate,bsd_comp
> slhc                    6912  1 ppp_generic
> rtc                    14452  0 
> usbcore               148804  1 
> unix                   29712  4 
> 
> I'm using ppp-2.4.3-r14. When I emerged it I was told
> that I must 
> 
> emerge -u '>=sys-apps/baselayout-1.12.0_pre11'
> 
> as well as add bsd_comp and ppp_deflate to my kernel
> config. Both of which I did.

Have you compiled serial port support in your new kernel?

Hope this helps,
Farhan Ahmed

-- 
Place		:  Bangalore, Karnataka, India
GPG Key		:  8BE90E98
WengoPhone ID	:  farhanahmed
IRC Nick	:  farhanahmed / farhanahmed06 (irc.freenode.net)

[-- Attachment #2: Type: application/pgp-signature, Size: 191 bytes --]

Re: [gentoo-user] where is /dev/ttyS* ?

[Alan E. Davis]

I don't know whether this is off or on topic, but I noticed that my
modem was assigned to a different ttySX w/ 2.6.16.  I ran wvdialconf
again, which identified the new /dev/ name, and it has worked
flawlessly since.  2.6.X kernels have given me, at least, fits over
/dev/ttySX.  The /dev/ttyS device nodes are attached to /dev/tts/X .

I don't know whether any of this is valid for anyone else or not. 
Perhaps it's something idiosyncratic about my setup.

Alan

On 4/21/06, Farhan Ahmed <farhanahmed06@gmail.com> wrote:
> maxim wexler wrote:
> > Hello everybody,
> >
> > When I try to dialup the 'net on a fresh 2.6.16
> > install I get:
> >
> > #pon <isp>
> > /usr/sbin/pppd: In file /etc/peers/hd: unrecognized
> > option '/dev/ttyS0'
> >
> > Sure enough, there's no such file, just /dev/tty, 0, 1
> > ... On my 2.6.12 and 2.6.15 boxen /dev/ttyS0 is a
> > sym-link to tts/0 and I can dial out no problem. On
> > the 2.6.16 box ls /dev/tty* just reveals a numerical,
> > unlinked list. /dev/ttyS* no longer exists.
>
> Hi,
>         I suppose you've connected your modem to a serial port (COMx
> under windows, /dev/ttySx under linux). /dev/ttyx is a terminal, i dont
> think modem is that device. Why dont you create a sym-link /dev/ttySx
> to /dev/tts/x?
>
> >
> > Here's what pppconfig wrote(identical on all my PCs):
> >
> > sarawak heathen # cat /etc/ppp/peers/hd
> > # This optionfile was generated by pppconfig 2.3.10.
> > #
> > #
> > hide-password
> > noauth
> > connect "/usr/sbin/chat -v -f /etc/chatscripts/hd"
> > debug
> > /dev/ttyS0
> > 115200
> > defaultroute
> > noipdefault
> > user "entbloc1@qc.aira.com"
> > remotename hd
> > ipparam hd
>
> Well learn to substitue a nonsence id for your real id (something like
> xyz will do) when posting your config's.
>
> >
> > As it stands now I can dial out from the 2.6.16 box
> > only if I boot the install-cd and copy over from
> > another drive my ppp config files and use the pppd
> > that comes with the install-cd. And *it* uses
> > /dev/ttyS0. If I try to go with /dev/tty or /dev/tty0
> > on the fresh install without benefit of install-cd,
> > nothing happens -- no error on the console or the
> > logs, no dialtone, nothing.
>
> Again /dev/ttyx is a terminal, u can check that by doing
>         'echo "hi" >> /dev/tty1'
> as root. You'll see 'hi' being printed in tty1. A dialup modem usually
> connects to the serial port (i.e., /dev/ttyS0). If this device does not
> exist create a symlink to tts/0.
>
> >
> > Yes, I did mknod /dev/ppp c 108 0
> >
> > and here's lsmod copied over from the 2.6.16 box.
> >
> > heathen@sarawak ~ $ cat /floppy/lsmod
> > Module                  Size  Used by
> > ppp_async              11840  0
> > crc_ccitt               1952  1 ppp_async
> > ppp_deflate             6176  0
> > zlib_deflate           21528  1 ppp_deflate
> > zlib_inflate           17440  1 ppp_deflate
> > bsd_comp                5952  0
> > ppp_generic            26484  3
> > ppp_async,ppp_deflate,bsd_comp
> > slhc                    6912  1 ppp_generic
> > rtc                    14452  0
> > usbcore               148804  1
> > unix                   29712  4
> >
> > I'm using ppp-2.4.3-r14. When I emerged it I was told
> > that I must
> >
> > emerge -u '>=sys-apps/baselayout-1.12.0_pre11'
> >
> > as well as add bsd_comp and ppp_deflate to my kernel
> > config. Both of which I did.
>
> Have you compiled serial port support in your new kernel?
>
> Hope this helps,
> Farhan Ahmed
>
> --
> Place           :  Bangalore, Karnataka, India
> GPG Key         :  8BE90E98
> WengoPhone ID   :  farhanahmed
> IRC Nick        :  farhanahmed / farhanahmed06 (irc.freenode.net)
>
>
>

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[gentoo-user] Re: where is /dev/ttyS* ?

[Simon Kellett]

maxim wexler <blissfix@yahoo.com> writes:

> #pon <isp>
> /usr/sbin/pppd: In file /etc/peers/hd: unrecognized
> option '/dev/ttyS0'

Sorry if it sounds obvious, but do you have serial port built into the
kernel ? Is it recognised at boot up ?

Was the old softlink created by the kernel or udev ?

-- 
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Darmstadt, Germany    |              Xemacs, Vm, Gnus

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Re: [gentoo-user] Re: where is /dev/ttyS* ?

[maxim wexler]

--- Simon Kellett <zoxed_c@arcor.de> wrote:

> maxim wexler <blissfix@yahoo.com> writes:
> 
> > #pon <isp>
> > /usr/sbin/pppd: In file /etc/peers/hd:
> unrecognized
> > option '/dev/ttyS0'
> 
> Sorry if it sounds obvious, but do you have serial
> port built into the
> kernel ? Is it recognised at boot up ?

As modules in /etc/modules.autoload.d/2.6. And they
all load before /etc/conf.d/net is reached. Don't tell
me I have to put them in the kernel now. That's lame.
It assumes I want to dial out every time I boot up.
Not true.

> 
> Was the old softlink created by the kernel or udev ?

Don't know. But now the link(if you mean the sym-link
from net.lo to net.ppp0) is made in /etc/conf.d/net
where it says cd something something, ln -s net.lo
net.ppp0. Which is confusing because why does it have
to make the link every time the PC boot's. And then
when it boots it says something like "file already
exists". But see my thread "emerge wvdial issues" for
more detail.

I even created the device useing mknod with the major,
minor numbers from ../Documentation/devices.txt.

No dice.

-Maxim



> 
> -- 
> Simon Kellett,        |   Gentoo Linux, Fvwm,
> Firefox 
> Darmstadt, Germany    |              Xemacs, Vm,
> Gnus
> 
> -- 
> gentoo-user@gentoo.org mailing list
> 
> 


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Re: [gentoo-user] Re: where is /dev/ttyS* ?

[James Ausmus]

On 4/24/06, maxim wexler <blissfix@yahoo.com> wrote:
>
>
> --- Simon Kellett <zoxed_c@arcor.de> wrote:
>
> > maxim wexler <blissfix@yahoo.com> writes:
> >
> > > #pon <isp>
> > > /usr/sbin/pppd: In file /etc/peers/hd:
> > unrecognized
> > > option '/dev/ttyS0'
> >
> > Sorry if it sounds obvious, but do you have serial
> > port built into the
> > kernel ? Is it recognised at boot up ?
>
> As modules in /etc/modules.autoload.d/2.6. And they
> all load before /etc/conf.d/net is reached. Don't tell
> me I have to put them in the kernel now. That's lame.
> It assumes I want to dial out every time I boot up.
> Not true.
>
You don't need it to be a "built-in" - module will work just fine.
However, from your lsmod output, I'm not seing a *serial driver*
module loaded (the piece that does the hardware-level communication
with the physical serial port - the ppp_* modules handle the
networking aspect of a dial-up modem, but they rely on actually having
a serial port to talk to). Did you compile serial port support into
your kernel (as a built-in or a module)? What is the output of
modprobe -l  (ell, not eye)?

To check for serial port support in your kernel, do:
cd /usr/src/linux
make menuconfig
go to Device Drivers -> Character Devices -> Serial Drivers
Then make sure that "8250/16550 and compatible serial support" has
either a * or an M

If it doesn't, then go ahead and add it in, recompile, reboot, and see
if your problem is fixed.

If it is enabled, and it is a module, there should be a module with a
name something along the lines of serial8250 - try modprobe'ing it,
then check for /dev/ttyS0.

What is the output of ls -al /dev/tts?

In your dmesg, do you see anything like:
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
? (cat /var/log/dmesg, or just type dmesg)


HTH-

James


> >
> > Was the old softlink created by the kernel or udev ?
>
> Don't know. But now the link(if you mean the sym-link
> from net.lo to net.ppp0) is made in /etc/conf.d/net
> where it says cd something something, ln -s net.lo
> net.ppp0. Which is confusing because why does it have
> to make the link every time the PC boot's. And then
> when it boots it says something like "file already
> exists". But see my thread "emerge wvdial issues" for
> more detail.
>
> I even created the device useing mknod with the major,
> minor numbers from ../Documentation/devices.txt.
>
> No dice.
>
> -Maxim
>
>
>
> >
> > --
> > Simon Kellett,        |   Gentoo Linux, Fvwm,
> > Firefox
> > Darmstadt, Germany    |              Xemacs, Vm,
> > Gnus
> >
> > --
> > gentoo-user@gentoo.org mailing list
> >
> >
>
>
> __________________________________________________
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Re: [gentoo-user] Re: where is /dev/ttyS* ?

[Walter Dnes]

On Mon, Apr 24, 2006 at 02:51:09PM -0700, James Ausmus wrote

> To check for serial port support in your kernel, do:
> cd /usr/src/linux
> make menuconfig
> go to Device Drivers -> Character Devices -> Serial Drivers
> Then make sure that "8250/16550 and compatible serial support" has
> either a * or an M

  One more booby-trap.  Is your modem an external modem that plugs into
the serial port?  No problem.  If it's an internal PCI modem (not
necessarily a "Winmodem") it will *NOT* work on the 4 standard COM ports
ttyS0..ttyS3 (COM1:..COM4: in DOS-speak).  It uses ttyS4 (COM5: in DOS)
or higher.  The *DEFAULT* is to support only the 4 standard ports.  To
support more ports (required for PCI modems) you must go to the menu
above and specify 5 or more ports, like so...

  (5)   Maximum number of 8250/16550 serial ports

  That one drove me nuts on my old Dell.  I had gone out of my way to
order a real PCI modem.  It worked fine on Redhat 7.1 through 9.0, but
simply wouldn't show up on some other distros.

-- 
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My musings on technology and security at http://tech_sec.blog.ca
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Re: [gentoo-user] Re: where is /dev/ttyS* ?

[Alan E. Davis]

I have an internal PCI modem.  It was /dev/ttyS14 for a long time, on
Ubuntu and Mepis, and maybe Gentoo (don't remember), but then, on
Gentoo, it started showing up on /dev/ttyS4, I believe.

Oddly, running kernel 2.6.16, it is showing up as /dev/ttyS2, so I had
to re-run wvdialconf (the only such package that ever detected the
modem as /dev/ttyS14, by the way).   Although I cannot be certain, I
suspect that serial support in the 2.6.X kernel series has gone
through another evolution.

Alan

On 4/25/06, Walter Dnes <waltdnes@waltdnes.org> wrote:
> On Mon, Apr 24, 2006 at 02:51:09PM -0700, James Ausmus wrote
>
> > To check for serial port support in your kernel, do:
> > cd /usr/src/linux
> > make menuconfig
> > go to Device Drivers -> Character Devices -> Serial Drivers
> > Then make sure that "8250/16550 and compatible serial support" has
> > either a * or an M
>
>   One more booby-trap.  Is your modem an external modem that plugs into
> the serial port?  No problem.  If it's an internal PCI modem (not
> necessarily a "Winmodem") it will *NOT* work on the 4 standard COM ports
> ttyS0..ttyS3 (COM1:..COM4: in DOS-speak).  It uses ttyS4 (COM5: in DOS)
> or higher.  The *DEFAULT* is to support only the 4 standard ports.  To
> support more ports (required for PCI modems) you must go to the menu
> above and specify 5 or more ports, like so...
>
>   (5)   Maximum number of 8250/16550 serial ports
>
>   That one drove me nuts on my old Dell.  I had gone out of my way to
> order a real PCI modem.  It worked fine on Redhat 7.1 through 9.0, but
> simply wouldn't show up on some other distros.
>
> --
> Walter Dnes <waltdnes@waltdnes.org> In linux /sbin/init is Job #1
> My musings on technology and security at http://tech_sec.blog.ca
> --
> gentoo-user@gentoo.org mailing list
>
>

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Re: [gentoo-user] Re: where is /dev/ttyS* ?

[maxim wexler]

> 
> To check for serial port support in your kernel, do:
> cd /usr/src/linux
> make menuconfig
> go to Device Drivers -> Character Devices -> Serial
> Drivers
> Then make sure that "8250/16550 and compatible
> serial support" has
> either a * or an M
> 
> If it doesn't, then go ahead and add it in,
> recompile, reboot, and see
> if your problem is fixed.

LOL! I've reconfig'd the kernel three times already
without finding it 'til now. 

Now the thing calls my isp when it boots! An easy fix.
Thanks all!

A question(at least one!) remains: /dev/ttyS0 on
<2.6.16 kernels is a sym-link like so

heathen@sarawak ~ $ ls -l /dev/ttyS0
lrwxrwxrwx  1 root root 5 Apr 25 14:21 /dev/ttyS0 ->
tts/0

On the 2.6.16 box /dev/ttyS* are actual devices. 

How is this better than before? Wait, I just
remembered , on the 2.6.16 box I chose
CONFIG_8250_ACPI and on the 2.6.12/15 boxen that's
turned off. That have something to do with it?

-mw

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Re: [gentoo-user] Re: where is /dev/ttyS* ?

[maxim wexler]

> Oddly, running kernel 2.6.16, it is showing up as
> /dev/ttyS2, so I had
> to re-run wvdialconf (the only such package that
> ever detected the
> modem as /dev/ttyS14, by the way).   Although I
> cannot be certain, I
> suspect that serial support in the 2.6.X kernel
> series has gone
> through another evolution.
> 
> Alan
> 
 One difference I noticed is in
/etc/conf.d/net.example. Much more extensive
configuration for dial-up. Basically, it asks you to
copy over the provider file under /etc/ppp/peers

Also, when I did an emerge ppp on the 2.6.16 box in
the log it mentions the new way of doing things, ie
using  ../conf.d/net

But I just noticed I had to rc-update del net.ppp0
default or it would a) dialout when booting and b)
fail to connect.

So I just do what I've always been doing pon <my-isp>.

-mw

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