Re: Synaptics PS/2 driver and 2.6.0-test11
From: Dmitry Torokhov
Date: Sun Dec 07 2003 - 19:57:43 EST
On Sunday 07 December 2003 05:10 pm, Santiago Garcia Mantinan wrote:
> Sorry, I didn't notice this thread till now...
> > But why it does not hurt with kernel 2.4.22? Moreover how ACPI BIOS
> > influences synaptics driver? I do not see any BIOS call there...
> I have this problem reported as bug 1093 at bugme.osdl.org, my laptop
> is an ACER with intel chipset.
> The problem will happen even if you only check the batery status once a
> day, at that time, you can get the lost sync thing in 2.6, but not in
> 2.2, so the problem is not with the gnome applet, in fact I'm seing it
> under icewm and I have been able to reproduce it without any battery
> applet or anything like that, only running the "acpi -V" command each
> minute in a cron, that suffices for getting the errors.
> I believe that this should be solved, in 2.6, as it certainly doesn't
> happen on 2.4, if you want more info look at bug #1093 at
> bugme.osdl.org or if you need more details just ask for them.
> Hope this helps.
The difference is that GPM (I assume you are using it to get Synaptics
support) only logs "protocol violations" when in debug mode, and then it
only checks 2 first bytes. The XFree driver does check the protocol but
its messages usually don't show up in the syslog. In other words in-kernel
Synaptics driver just makes the problem apparent it seems.
>From what I saw in one case where Synaptics was loosing sync it looked
like 2 first bytes of the 6 byte packet were lost (psmouse never got them).
Would be interesting to compile i8042.c with debug and see the full flow
of a problem system...
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