[gentoo-user] selecting OS in Grub

[gentoo-user] selecting OS in Grub

[Jorge Almeida]

I'm unable to select which OS to boot at the grub screen, because the up
and down keys simply stopped working, so it always boots the default.
This never happened before. I already re-emerged and re-installed grub.
The arrow keys work normally otherwise, both in X and in a VC, including
in a curses screen.

Any idea?

-- 
Jorge Almeida
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Re: [gentoo-user] selecting OS in Grub

[Graham Murray]

Jorge Almeida <jalmeida@math.ist.utl.pt> writes:

> I'm unable to select which OS to boot at the grub screen, because the up
> and down keys simply stopped working, so it always boots the default.
> This never happened before. I already re-emerged and re-installed grub.
> The arrow keys work normally otherwise, both in X and in a VC, including
> in a curses screen.
>
> Any idea?

Are you using a USB keyboard? If so then ensure that the BIOS is set
to handle it.
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Re: [gentoo-user] selecting OS in Grub

[Jorge Almeida]

On Thu, 15 Mar 2007, Graham Murray wrote:

> Jorge Almeida <jalmeida@math.ist.utl.pt> writes:
>
>> I'm unable to select which OS to boot at the grub screen, because the up
>> and down keys simply stopped working, so it always boots the default.
>> This never happened before. I already re-emerged and re-installed grub.
>> The arrow keys work normally otherwise, both in X and in a VC, including
>> in a curses screen.
>>
>
> Are you using a USB keyboard? If so then ensure that the BIOS is set
> to handle it.
>
No. And the hardware is not new, nor is this a fresh install. I just
don't know what changed...

-- 
Jorge Almeida
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gentoo-user@gentoo.org mailing list

RE: [gentoo-user] selecting OS in Grub

[Nelson, David (ED, PAR&D)]

> -----Original Message-----
> From: Jorge Almeida [mailto:jalmeida@math.ist.utl.pt]
> Sent: 15 March 2007 11:40
> To: gentoo-user@lists.gentoo.org
> Subject: Re: [gentoo-user] selecting OS in Grub
> 
> No. And the hardware is not new, nor is this a fresh install. I just
> don't know what changed...

Try a different keyboard? Just in case?


--
djn

I do not represent anyone else in emails I send to this list.
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[gentoo-user] Re: selecting OS in Grub

[Grant Edwards]

On 2007-03-15, Jorge Almeida <jalmeida@math.ist.utl.pt> wrote:

> I'm unable to select which OS to boot at the grub screen, because the up
> and down keys simply stopped working, so it always boots the default.

Use the number keys.

-- 
Grant Edwards                   grante             Yow!  How's the wife? Is
                                  at               she at home enjoying
                               visi.com            capitalism?

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Re: [gentoo-user] selecting OS in Grub

[Andrey Gerasimenko]

On Thu, 15 Mar 2007 14:46:47 +0300, Nelson, David (ED, PAR&D)  
<David.Nelson2@astrazeneca.com> wrote:

>> No. And the hardware is not new, nor is this a fresh install. I just
>> don't know what changed...
>
> Try a different keyboard? Just in case?
>
>

Try LILO.

-- 
Andrei Gerasimenko
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RE: [gentoo-user] selecting OS in Grub [SOLVED]

[Jorge Almeida]

On Thu, 15 Mar 2007, Nelson, David \(ED, PAR&D\) wrote:

>> -----Original Message-----
>> From: Jorge Almeida [mailto:jalmeida@math.ist.utl.pt]
>> Sent: 15 March 2007 11:40
>> To: gentoo-user@lists.gentoo.org
>> Subject: Re: [gentoo-user] selecting OS in Grub
>>
>> No. And the hardware is not new, nor is this a fresh install. I just
>> don't know what changed...
>
> Try a different keyboard? Just in case?
>
Good tip. Actually, the keyboard was connected to the mouse socket.
Consequence of a short cable + bad visual access to the back of the box
+ USB mouse.
Would you believe that even so it works, except for the grub screen?
Thanks everyone, and sorry for the unneeded entropy.
>

-- 
Jorge Almeida
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Re: [gentoo-user] selecting OS in Grub [SOLVED]

[Dan Farrell]

On Thu, 15 Mar 2007 13:57:17 +0000 (WET)
Jorge Almeida <jalmeida@math.ist.utl.pt> wrote:

> On Thu, 15 Mar 2007, Nelson, David \(ED, PAR&D\) wrote:
> 
> >> -----Original Message-----
> >> From: Jorge Almeida [mailto:jalmeida@math.ist.utl.pt]
> >> Sent: 15 March 2007 11:40
> >> To: gentoo-user@lists.gentoo.org
> >> Subject: Re: [gentoo-user] selecting OS in Grub
> >>
> >> No. And the hardware is not new, nor is this a fresh install. I
> >> just don't know what changed...
> >
> > Try a different keyboard? Just in case?
> >
> Good tip. Actually, the keyboard was connected to the mouse socket.
> Consequence of a short cable + bad visual access to the back of the
> box
> + USB mouse.
> Would you believe that even so it works, except for the grub screen?
> Thanks everyone, and sorry for the unneeded entropy.
PS/2 ports are actually kind of cool.  I beleive you could also get a
PS/2 splitter to use, say, a mouse and keyboard on just one port.   USB
kind of replaced it (windows refuses to hotswap mice, for example, and
my techie windows-poweruser roommate insists that he's never been able
to hotplug keyboards either, unless they were attached when the
computer booted, although i'm almost positive he's wrong) and is
supported a lot better, but - no surprise - linux is flexible.  
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Re: [gentoo-user] selecting OS in Grub [SOLVED]

[Michael Schreckenbauer]

Am Donnerstag, 15. März 2007 15:28:16 schrieb Dan Farrell:
> (windows refuses to hotswap mice, for example, and
> my techie windows-poweruser roommate insists that he's never been able
> to hotplug keyboards either, unless they were attached when the
> computer booted, although i'm almost positive he's wrong)

Sorry, if I get this wrong. This is about PS/2-Ports, right?
Well your roommate is right then, PS/2 is not hotpluggable. Neither the 
protocol nor the plugs are designed for this kind of use. It sometimes works, 
but there is always the danger, your computer gets damaged.

Regards,
Michael
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Re: [gentoo-user] selecting OS in Grub [SOLVED]

[Dan Farrell]

On Thu, 15 Mar 2007 15:44:29 +0100
Michael Schreckenbauer <grimlog@gmx.de> wrote:

> Am Donnerstag, 15. März 2007 15:28:16 schrieb Dan Farrell:
> > (windows refuses to hotswap mice, for example, and
> > my techie windows-poweruser roommate insists that he's never been
> > able to hotplug keyboards either, unless they were attached when the
> > computer booted, although i'm almost positive he's wrong)
> 
> Sorry, if I get this wrong. This is about PS/2-Ports, right?
> Well your roommate is right then, PS/2 is not hotpluggable. Neither
> the protocol nor the plugs are designed for this kind of use. It
> sometimes works, but there is always the danger, your computer gets
> damaged.
> 
> Regards,
> Michael
well, i definitely hotswap keyboards all the time and i've never once
had a problem, even in windows.  I guess mice have to be plugged in at
boot to work, I can't use them after booting if they weren't.
Kebyoards however work fine, even if they weren't plugged in when the
computer booted.  I didn't test it for windows.  
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Re: [gentoo-user] selecting OS in Grub [SOLVED]

[Michael Schreckenbauer]

Am Donnerstag, 15. März 2007 16:33:40 schrieb Dan Farrell:
> On Thu, 15 Mar 2007 15:44:29 +0100
>
> Michael Schreckenbauer <grimlog@gmx.de> wrote:
> > Am Donnerstag, 15. März 2007 15:28:16 schrieb Dan Farrell:
> > > (windows refuses to hotswap mice, for example, and
> > > my techie windows-poweruser roommate insists that he's never been
> > > able to hotplug keyboards either, unless they were attached when the
> > > computer booted, although i'm almost positive he's wrong)
> >
> > Sorry, if I get this wrong. This is about PS/2-Ports, right?
> > Well your roommate is right then, PS/2 is not hotpluggable. Neither
> > the protocol nor the plugs are designed for this kind of use. It
> > sometimes works, but there is always the danger, your computer gets
> > damaged.

> well, i definitely hotswap keyboards all the time and i've never once
> had a problem, even in windows.  I guess mice have to be plugged in at
> boot to work, I can't use them after booting if they weren't.
> Kebyoards however work fine, even if they weren't plugged in when the
> computer booted.  I didn't test it for windows.


I'd call this luck ;)
http://en.wikipedia.org/wiki/PS/2_connector
See "Potential Damage"

Regards,
Michael
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Re: [gentoo-user] selecting OS in Grub [SOLVED]

[darren kirby]

quoth the Michael Schreckenbauer:

> I'd call this luck ;)
> http://en.wikipedia.org/wiki/PS/2_connector
> See "Potential Damage"

That's an eye-opener. I've always hotswapped my PS2 mice and keyboards (with 
no problems).

> Regards,
> Michael

-d
-- 
darren kirby :: Part of the problem since 1976 :: http://badcomputer.org
"...the number of UNIX installations has grown to 10, with more expected..."
- Dennis Ritchie and Ken Thompson, June 1972
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Re: [gentoo-user] selecting OS in Grub [SOLVED]

[Dan Farrell]

On Thu, 15 Mar 2007 16:50:04 +0100
Michael Schreckenbauer <grimlog@gmx.de> wrote:

> I'd call this luck ;)
> http://en.wikipedia.org/wiki/PS/2_connector
> See "Potential Damage"
> 
> Regards,
> Michael

maybe not luck...
>Hot swapping PS/2 devices usually does not cause damage due to the fact
>that more modern microcontrollers tend to have more robust I/O lines
>built into them which are harder to damage, however, hot swapping can
>still potentially cause damage.

the ps/2 protocol has been around forever.  But good reference, and an
intersting read, and a much needed response to my unsubstantiated
claims.  thanks ; )

-- dan 
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Re: [gentoo-user] selecting OS in Grub [SOLVED]

[Dale]

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Dan Farrell wrote:
> On Thu, 15 Mar 2007 16:50:04 +0100
> Michael Schreckenbauer <grimlog@gmx.de> wrote:
>
>   
>> I'd call this luck ;)
>> http://en.wikipedia.org/wiki/PS/2_connector
>> See "Potential Damage"
>>
>> Regards,
>> Michael
>>     
>
> maybe not luck...
>   
>> Hot swapping PS/2 devices usually does not cause damage due to the fact
>> that more modern microcontrollers tend to have more robust I/O lines
>> built into them which are harder to damage, however, hot swapping can
>> still potentially cause damage.
>>     
>
> the ps/2 protocol has been around forever.  But good reference, and an
> intersting read, and a much needed response to my unsubstantiated
> claims.  thanks ; )
>
> -- dan 
>   

I have to add this, I have seen people do this and it caused damage to
the controller chip.  Even after rebooting everything would work fine
except the keyboard or mouse port that was swapped.  I have had this to
happen to me twice.  The first time I learned not to do it, the second
time the cable snagged and got unplugged by accident.  I hated to throw
that mobo away so I made a server out of it and use ssh now.  ;-)

You may have been lucky so far but I would be more careful if you like
the mobo you have.  Better safe than sorry.

Dale

:-)  :-)  :-)

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