Pali Rohár <pali.rohar@xxxxxxxxx> writes:
> On Wednesday 25 May 2016 12:38:15 Allen_Hung@xxxxxxxx wrote:
>>
>> I got responds from Alps and they confirmed that the Alps devices in
>> Dell systems are speaking in protocol V8. The devices that speak in
>> protocol V9 are using different ASIC hardware and they are not used
>> in Dell systems..
>>
Thanks Allen!
>
> Hi Allen, thank you for confirmation.
>
> Ben, V8 protocol is supported by linux kernel since version 4.1. Do you
> have needed version?
Yes, I have been running 4.5 and 4.6.
> If yes and your touchpad does not work, please compile psmouse.ko in
> debug mode and send us dmesg output. Maybe there can be something
> interesting...
>
As I mentioned earlier, the device is certainly not recognized as an
ALPS device,
[ 367.097253] input: ImPS/2 BYD TouchPad as /devices/platform/i8042/serio1/input/input21
If I `rmmod psmouse; modprobe psmouse dyndbg==pm` I find this,
[ 714.520655] psmouse: psmouse serio1: cypress_ps2: send extension cmd 0x00, [0 0 0 0]
[ 714.748482] psmouse: psmouse serio1: cypress_ps2: Command 0x00 response data (0x): 00 00 14
[ 714.781858] psmouse: psmouse serio1: alps: E6 report: 00 00 64
[ 714.804749] psmouse: psmouse serio1: alps: E7 report: 73 03 28
[ 714.830829] psmouse: psmouse serio1: alps: EC report: 73 01 13
[ 714.833568] psmouse: psmouse serio1: alps: Likely not an ALPS touchpad: E7=73 03 28, EC=73 01 13
[ 714.860923] psmouse: psmouse serio1: elantech: unexpected magic knock result 0x00, 0x02, 0x64.
[ 714.947527] psmouse: psmouse serio1: byd: BYD touchpad detected
[ 715.869113] input: ImPS/2 BYD TouchPad as /devices/platform/i8042/serio1/input/input24
This seems like quite a hint.
Cheers,
- Ben
Attachment:
signature.asc
Description: PGP signature
