I am having a problem with the touchpad and pointer stick on my HP compaq nc6000 laptop. It only happens when using ACPI. Both pointing devices work for a while, but eventually start to 'stick'. The cursor won't move for about a second, and then it jerks all over the screen, clicking. This problem gradually increases in frequency, until eventually neither device works at all. Even cat'ing the respective /dev/input/event* device doesn't return anything, and I have to shut down or suspend the computer for about 15 minutes before it will work again. (simply rebooting doesn't fix it.) (Actually, it sometimes works if I press down REALLY hard... perhaps that's due to some sensitivity threshold being automatically adjusted?) Everything works perfectly if I boot with acpi=off. (I also left Windows open all day once, and it didn't happen there either.) I'm using kubuntu, and have tested it with kernel 2.6.20, 2.6.22.1, and 2.6.23-rc1. When the problem happens, I get lines like this from dmesg: psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1 or sometimes like this: psmouse.c: TouchPad at isa0060/serio4/input0 lost synchronization, throwing 4 bytes away. From Google I have found a few other similar reports. For one person this seems to happen under load. For me, it sometimes seems to happen right when I start to compile or something, but it will also happen when I boot up the computer and don't even touch it. (literally: I'll come back in a half an hour and the TP doesn't work.) Someone else seemed to have the problem from reading ACPI states. I have not been able to find any correlation in this respect. I booted up without the battery panel applet and without starting acpid, and it still started hiccuping after 5 minutes. There seems to be no correlation between how much I use it and how long it lasts. Sometimes I can be using it constantly and it lasts an hour. Sometimes I barely touch it and it lasts only 10 minutes. I'm attaching the output of dmesg, lshw, lsmod and lspci. So, what more can I do? Is there any more information I can provide? Are there any patches I can try? I'm willing to help out any way I can. Thanks for reading, Matthew Marshall P.S. I'm not subscribed, so please CC any replies. P.P.S. Sometimes it seems to be able to read my mind... Just when I think "wow it's lasting a long time!" it will freeze up within two seconds. I understand that this might be hard for others to reproduce.
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lshw.out.gz
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lsmod.out.gz
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lspci.out.gz
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dmesg.out.gz
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