On 11/3/06, Dmitry Torokhov <[email protected]> wrote:
On Sunday 29 October 2006 18:20, Dave Neuer wrote:
> Or is it also to
> make the i8042 driver less racy?
I think we agree that i8042_aux_write() is not racy, do you see any other
races in i8042?
No, the polling seemed like the big race.
> I ask because I've applied this over
> (a modified) 2.6.18 on my Compaq Presario X1010us laptop which has
> been driving me crazy w/ Synaptics problems and keyboard problems
> (intermittent, but frequent enough lately that I finally figured I
> needed to do something about it).
>
Have you tried limiting Synaptics rate to 40 packets per second (using
psmouse.rate=40 option)? Some KBD can't handle full Synaptics rate of
80 pps; it usually manifests in keyboard troubles.
No, haven't tried that (first I've heard of it, thanks!)
As I said, I have had both keyboard and touchpad problems on this
laptop (formerly more of the former, lately more of the latter);
interestingly, after applying this patch I have had failures much less
frequently (multiple instances of several days w/out failure w/ the
laptop powered on continuously). Also interestingly, and
unfortunately, that may be coincidence; I've discovered a use case
that seems to reliably cause the touchpad to freeze up w/ or w/out the
patch applied (selecting multiple items in modified file list in
EasyTAG). Haven't looked into it yet, on the "hurts when I do this,"
"then don't do that" theory, but when I have time to look at the
EasyTAG code and try to reason about what's happening, I will.
>
> I don't really know if or how much the races in this driver are
> contributing to my problems (keyboard getting stuck repeating last
> key, or ignoring interrupts, or synaptics touchpad freezing, last of
> which requires cold boot to fix).
You mean even reloading psmouse module can't revive the touchpad?
Correct. Even rebooting doesn't help. Halt. Start.
> Maybe more likely an ACPI thing?
Coudl be.
Hmmmm.
Dave
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