linux-kernel - Re: PS/2 keyboard of laptop Dell XPS 13 9360 goes missing after S3

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Message-ID: <0b30c88a-6f0c-447f-a08e-29a2a0256c1b@molgen.mpg.de>
Date: Sun, 21 Jan 2024 15:26:49 +0100
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: Hans de Goede <hdegoede@...hat.com>
Cc: linux-input@...r.kernel.org, linux-pm@...r.kernel.org,
 Dell.Client.Kernel@...l.com, regressions@...ts.linux.dev,
 linux-kernel@...r.kernel.org
Subject: Re: PS/2 keyboard of laptop Dell XPS 13 9360 goes missing after S3

Dear Hans,


As always thank you very much for taking the time to reply.


Am 20.01.24 um 21:26 schrieb Hans de Goede:

> On 1/18/24 13:57, Paul Menzel wrote:
>> #regzbot introduced v6.6.11..v6.7

>> There seems to be a regression in Linux 6.7 on the Dell XPS 13 9360 (Intel i7-7500U).
>>
>>      [    0.000000] DMI: Dell Inc. XPS 13 9360/0596KF, BIOS 2.21.0 06/02/2022
>>
>> The PS/2 keyboard goes missing after S3 resume¹. The problem does not happen with Linux 6.6.11.
> 
> Thank you for reporting this.
> 
> Can you try adding "i8042.dumbkbd=1" to your kernel commandline?
> 
> This should at least lead to the device not disappearing from
> 
> "sudo libinput list-devices"
> 
> The next question is if the keyboard will still actually
> work after suspend/resume with "i8042.dumbkbd=1". If it
> stays in the list, but no longer works then there is
> a problem with the i8042 controller; or interrupt
> delivery to the i8042 controller.
> 
> If "i8042.dumbkbd=1" somehow fully fixes things, then I guess
> my atkbd driver fix for other laptop keyboards is somehow
> causing issues for yours.

Just a quick feedback, that booting with `i8042.dumbkbd=1` seems to fix 
the issue.

> If "i8042.dumbkbd=1" fully fixes things, can you try building
> your own 6.7.0 kernel with commit 936e4d49ecbc:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=936e4d49ecbc8c404790504386e1422b599dec39
> 
> reverted?

I am going to try that as soon as possible.


Kind regards,

Paul


>>      [    1.435071] i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
>>      [    1.435409] i8042: Warning: Keylock active
>>      [    1.437624] serio: i8042 KBD port at 0x60,0x64 irq 1
>>      [    1.437631] serio: i8042 AUX port at 0x60,0x64 irq 12
>>      […]
>>      [    1.439743] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0
>>
>>      $ sudo libinput list-devices
>>      […]
>>      Device:           AT Translated Set 2 keyboard
>>      Kernel:           /dev/input/event0
>>      Group:            15
>>      Seat:             seat0, default
>>      Capabilities:     keyboard
>>      Tap-to-click:     n/a
>>      Tap-and-drag:     n/a
>>      Tap drag lock:    n/a
>>      Left-handed:      n/a
>>      Nat.scrolling:    n/a
>>      Middle emulation: n/a
>>      Calibration:      n/a
>>      Scroll methods:   none
>>      Click methods:    none
>>      Disable-w-typing: n/a
>>      Disable-w-trackpointing: n/a
>>      Accel profiles:   n/a
>>      Rotation:         0.0
>>
>> `libinput list-devices` does not list the device after resuming
>> from S3. Some of the function keys, like brightness and airplane
>> mode keys, still work, as the events are probably transmitted over
>> the embedded controller or some other mechanism. An external USB
>> keyboard also still works.
>> 
>> I haven’t had time to further analyze this, but wanted to report
>> it. No idea
>> 
>> 
>> Kind regards,
>> 
>> Paul
>> 
>> 
>> ¹ s2idle is not working correctly on the device, in the sense, that
>> energy usage is very high in that state, and the full battery is at
>> 20 % after leaving it for eight hours.