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SubjectRe: [BUG] 2.5.42+ reboot kills Dell Latitude keyboard
Eric W. Biederman writes:
> Mikael Pettersson <mikpe@csd.uu.se> writes:
>
> > Dell Latitude CPi laptop. Boot 2.5.42 or .43, then reboot.
> > Shortly after the screen is blanked and the BIOS starts, it
> > prints a "keyboard error" message and requests an F1 or F2
> > response (continue or go into SETUP). Never happened with any
> > other kernel on that machine.
> >
> > Apparently the 2.5.42+ "let's shut everything down at reboot"
> > change
>
> There was no such change just a discussion of what the kernel
> has been doing since 2.5.8 or so.
>
> > put the keyboard controller in a state which is inconsistent
> > with the BIOS' expections at a warm boot.
>
> There is a bug in device_suspend. device_shutdown, and device_suspend
> where merged and the POWER_DOWN case now removes the drivers which
> is a bug. You may be getting hit with that.
>
> Eric Blade has posed a patch fixing that.

I tried Eric Blade's patch
<http://marc.theaimsgroup.com/?l=linux-kernel&m=103477012517984&w=2>
but it didn't make any difference. Same keyboard error as before.

So either the patch doesn't change what actions are taken on reboot,
or the keyboard (std SERIO_I8042 + ATKBD PC stuff) driver was also
broken in the 2.5.41->2.5.42 step.

/Mikael
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