Re: [BUG] 2.5.42+ reboot kills Dell Latitude keyboard

From: Eric W. Biederman (
Date: Thu Oct 17 2002 - 04:32:11 EST

Mikael Pettersson <> 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.

Or else there is a change in the ->remove() method of one your drivers.

> First the disks-spun-down-at-reboot bug and now this. Sigh.

Someone implemented that in the IDE driver deliberately. I haven't
a clue why but it happened.

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This archive was generated by hypermail 2b29 : Wed Oct 23 2002 - 22:00:33 EST