Re: 14.0-CURRENT boots fine but keyboard does not work

From: Michael Gmelin <grembo_at_freebsd.org>
Date: Mon, 04 Sep 2023 17:40:08 UTC

> On 4. Sep 2023, at 19:34, Matthias Apitz <guru@unixarea.de> wrote:
> 
> El día lunes, septiembre 04, 2023 a las 07:29:41p. m. +0200, Michael Gmelin escribió:
> 
>> 
>> 
>>>> On 4. Sep 2023, at 19:23, Matthias Apitz <guru@unixarea.de> wrote:
>>> 
>>> 
>>> Added Alexander Motin <mav@FreeBSD.org> to To: as the origin of the CI;
>>> 
>>> Neither hw.atkbd.hz=1 nor hw.atkbd.hz=10 makes the keyboard working on
>>> my beloved Acer C720. Should I file a new PR?
>>> 
>> 
>> Filing a PR makes sense, could you please Cc me on it?
>> 
>> Do you know which version of FreeBSD was the last that worked for you?
> 
> I'm actually using (and typing this on it) r368166. Will file a PR
> tomorrow. Thanks
> 

This could also be related:

https://cgit.freebsd.org/src/commit/?id=319d2bf407b3762da6f1c67ffe8dce2fee587aaf

You could try to undo that patch and build a new kernel.

Best
Michael



>    matthias
> 
>>>> El día lunes, septiembre 04, 2023 a las 06:55:52p. m. +0200, Michael Gmelin escribió:
>>>> 
>>>> 
>>>> 
>>>> On Mon, 4 Sep 2023 18:43:11 +0200
>>>> Matthias Apitz <guru@unixarea.de> wrote:
>>>> 
>>>>> I have a 14.0-CURRENT compiled from sources of head from August 4,
>>>>> which boots fine from a produced USB key, but the keyboard does not
>>>>> work on an Acer C720 (amd64), on other laptops the keyboard is fine.
>>>>> 
>>>>> The keyboard works during the boot menu (for example to enable verbose
>>>>> boot messages) but not on the login: prompt of the booted system.
>>>>> 
>>>>> I've enabled SSH access into the C720 (if someone need more
>>>>> information) and I'm attaching /var/log/messages of the booted system.
>>>> 
>>>> Hi Matthias,
>>>> 
>>>> The C720 required special patches for the keyboard to work, which I
>>>> originally added here:
>>>> https://cgit.freebsd.org/src/commit/?id=6c176113bbdd598231ec47d161d4c3714997169b
>>>> 
>>>> I assume that something in that area changed recently.
>>>> 
>>>> Without digging into it, this looks like a possible cause:
>>>> 
>>>> https://cgit.freebsd.org/src/commit/sys/dev/atkbdc/atkbd.c?id=ce881170088c4c98c036fe561f8ee8413c2e2585
>>>> 
>>>> atkbd: Disable periodic polling by default.
>>>> It is one of the few remaining Giant-locked callouts.  It would be
>>>> good to remove it, not mentioning that polling itself is not good.
>>>> 
>>>> If this cause keyboard/mouse freezes on some hardware, please set
>>>> loader tunable hw.atkbd.hz=1 as workaround and report the issue.
>>>> 
>>>> So you could try to set hw.atkbd.hz=1 (or hw.atkbd.hz=10) in
>>>> /boot/loader.conf, then reboot and see if it helps.
>>>> 
>>>> Best
>>>> Michael
>>>> 
>>>> -- 
>>>> Michael Gmelin
>>>> 
>>> 
>>> -- 
>>> Matthias Apitz, ✉ guru@unixarea.de, http://www.unixarea.de/ +49-176-38902045
>>> Public GnuPG key: http://www.unixarea.de/key.pub
>> 
>> 
> 
> -- 
> Matthias Apitz, ✉ guru@unixarea.de, http://www.unixarea.de/ +49-176-38902045
> Public GnuPG key: http://www.unixarea.de/key.pub