Recentemente tive problemas com meu laptop DELL Vostro 3750, o touchpad tem um comportamento irregular.
Olhando para a dmesgsaída, posso ver:
[175874.428170] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost synchronization, throwing 5 bytes away.
[175874.938670] psmouse serio1: resync failed, issuing reconnect request
[175879.431915] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost synchronization, throwing 1 bytes away.
[175879.453182] psmouse serio1: resync failed, issuing reconnect request
[175889.437902] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away.
[175889.957166] psmouse serio1: resync failed, issuing reconnect request
[176624.939847] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost synchronization, throwing 4 bytes away.
[176625.454747] psmouse serio1: resync failed, issuing reconnect request
[176805.063135] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away.
[176805.573049] psmouse serio1: resync failed, issuing reconnect request
Olhando na web, parece acontecer comkernel linux recente, no entanto, ainda estou usando o mesmo kernel:
$ uname -a
Linux maester 3.14-0.bpo.1-amd64 #1 SMP Debian 3.14.12-1~bpo70+1 (2014-07-13) x86_64 GNU/Linux
Se eu ativar o debugfs aqui, é o que vejo:
# cat /sys/module/psmouse/parameters/proto
auto
# mount -t debugfs none /sys/kernel/debug/
# echo "file drivers/input/mouse/* +p" > /sys/kernel/debug/dynamic_debug/control
leva a:
[ 3484.184294] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost synchronization, throwing 1 bytes away.
[ 3484.206545] psmouse serio1: resync failed, issuing reconnect request
[ 3484.657119] psmouse serio1: alps: E6 report: 00 00 64
[ 3484.679989] psmouse serio1: alps: E7 report: 73 02 64
[ 3484.703271] psmouse serio1: alps: EC report: 88 07 9d
[ 3484.724681] psmouse serio1: alps: EC report: 88 07 9d
[ 3484.795169] psmouse serio1: alps: EC report: 88 07 9d
[ 3489.186775] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost synchronization, throwing 1 bytes away.
[ 3489.209246] psmouse serio1: resync failed, issuing reconnect request
[ 3489.661888] psmouse serio1: alps: E6 report: 00 00 64
[ 3489.685972] psmouse serio1: alps: E7 report: 73 02 64
[ 3489.711895] psmouse serio1: alps: EC report: 88 07 9d
[ 3489.732625] psmouse serio1: alps: EC report: 88 07 9d
[ 3489.781987] psmouse serio1: alps: EC report: 88 07 9d
[ 3859.439899] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away.
[ 3859.461770] psmouse serio1: resync failed, issuing reconnect request
[ 3859.910943] psmouse serio1: alps: E6 report: 00 00 64
[ 3859.935221] psmouse serio1: alps: E7 report: 73 02 64
[ 3859.960135] psmouse serio1: alps: EC report: 88 07 9d
[ 3859.982875] psmouse serio1: alps: EC report: 88 07 9d
[ 3860.032681] psmouse serio1: alps: EC report: 88 07 9d
Responder1
Atualizei meu sistema para um sistema debian/jessie e tudo também não funcionou.
Depois de brincar com i8ko módulo, percebi que ele i8kmonestava funcionando em intervalos programados. eu decidi quepare com issoe tambémremovendo manualmenteo i8kmódulo. Por alguma razão, a lista negra não foi suficiente:
$ cat /etc/modprobe.d/i8k-blacklist.conf
# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=732242
blacklist i8k
O touchpad agora se comporta bem, não há mais problemas com o teclado. E até o ventilador está girando na velocidade correta (ele ligava/parava sem motivo).