On 1/10/06, Vojtech Pavlik <[email protected]> wrote:
> On Tue, Jan 10, 2006 at 10:12:21AM -0500, Alan Stern wrote:
> > On Tue, 10 Jan 2006, Vojtech Pavlik wrote:
> >
> > > It's usually that the BIOS does an incomplete emulation of the i8042
> > > chip, while still getting in the way to the real i8042. Usually GRUB and
> > > DOS don't care about sending any commands to the i8042, and so they
> > > work. The Linux i8042.c driver needs to use them to enable the PS/2
> > > mouse port and do other probing, and if the commans are not working, it
> > > just bails out.
> > >
> > > The question of course is why the handoff code doesn't work on that
> > > platform.
> >
> > It turned out that a BIOS upgrade fixed the problem, but this doesn't
> > answer your question.
> >
> > The problem wasn't an incomplete emulation of the i8042, because when the
> > USB handoff code was commented out the PS/2 keyboard worked okay. This
> > means the handoff, when enabled, wasn't being done correctly. That could
> > be the fault of the USB drivers or the BIOS (or both). We have no way to
> > tell which, because the users have all switched to the newer BIOS.
>
> As usual with BIOS interaction problems.
>
We'll just have to wait for another report. "Sluggish typing" report
looks promising.
--
Dmitry
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