Re: 2.6 kernel won't reboot on AMD system - 8042 problem?

Vojtech Pavlik
2004-08-11T14:15:42Z

On Wed, Aug 11, 2004 at 03:43:16PM +0200, Sascha Wilde wrote:
> On Wed, Aug 11, 2004 at 02:27:11PM +0200, Vojtech Pavlik wrote:
> > On Wed, Aug 11, 2004 at 01:31:13AM -0500, Dmitry Torokhov wrote:
> > > On Thursday 05 August 2004 07:48 am, David N. Welton wrote:
> > > > By putting a series of 'crashme/reboot' calls into the kernel, I
> > > > narrowed a possibl cause of it down to this bit of code in
> > > > drivers/input/serio.c:753
> [...]
> > > Could you please try the patch below? I am interested in tests both with
> > > and without keyboard/mouse. The main idea is to leave ports that have been
> > > disabled by BIOS alone... The patch compiles but otherwise untested. Against
> > > 2.6.7.
> >
> > Well, this has a problem - plugging a mouse later will never work, as
> > the interface will be disabled by the BIOS if a mouse is not present at
> > boot.
>
> Is PS/2 supposed to support hotpluging at all? I guess it's not, but I may
> be wrong...

Electrically it's fine - the data and clock lines are pulled-up open-collector.

Protocol-wise it's also OK, each device announces itself after it's
plugged in.

--
Vojtech Pavlik
SuSE Labs, SuSE CR