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On 11/3/06, Dmitry Torokhov <dtor@insightbb.com> 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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