Dmitry Torokhov wrote:
> Hi Woody,
>
> On Tue, Aug 27, 2024 at 07:44:12PM -0400, Woody Suwalski wrote:
>> Kernel 6.11 rcN on Dell XPS 15Z:  touch pad has stopped working after the
>> patch
>>
>> commit 8bccf667f62a2351fd0b2a2fe5ba90806702c048
>> Author: Dmitry Torokhov <dmitry.torokhov@gmail.com>
>> Date:   Fri Jun 28 15:47:25 2024 -0700
>>
>>      Input: cypress_ps2 - report timeouts when reading command status
>>
>> It seems that the first communication is with an invalid packet of 3 NULLs,
>> and that
>> status failure used to be ignored. With the above patch it is now returning
>> an error and
>> that results in a dead touch pad.
>>
>> The fix is to stop flagging an error for 3-byte null packets, just keep
>> ignoring them as before.
>> [    2.338016] [    T591] err: Command 0x00 response data (0x): 00 00 00
>> [    2.338032] [    T591] ok: Command 0x00 response data (0x): 33 cc a2
>> ...
>> [    2.770029] [    T591] ok: Command 0x00 response data (0x): 33 cc a2
>> [    2.998030] [    T591] ok: Command 0x11 response data (0x): 01 00 64
> Could you please send me logs with i8042.debug=1 kernel command line
> option please?  I wonder if we need to wake up the controller...
>
> Thanks.
>
Sure, the dmesg log is attached (for the failing scenario)
Thanks, Woody