Re: HP ZBook: no sound after resume on Ubuntu 20.04

On 2/10/21 2:13 PM, Blazej Slusarek wrote:
> On Wed, Feb 10, 2021 at 12:51 PM Kai Vehmanen
> <[email protected]> wrote:
>>
>> Hi,
>>
>> On Mon, 8 Feb 2021, Blazej Slusarek wrote:
>>
>>> My laptop HP ZBook Fury 15 G7 Mobile Workstation has the problem that
>>> there's no sound after I suspend and resume it, the only solution that
>> [...]>
>>> logs from alsa-info when sound is working: https://pastebin.com/0CuJWiG1
>>> When it's not working (after resume): https://pastebin.com/CGD2GDGb
>>
>> hmm, that's interesting. I can't spot anything really wrong in the
>> kernel logs -- all seems fine and the alsa-info dumps are basicly
>> identical.
>>
>> Can you try with latest upstream kernel? There have been a few patches
>> related to ALC285 codec driver, like this one:
>>
>> "ALSA: hda/realtek: fix right sounds and mute/micmute LEDs for HP
>> machines"
>>
>> Br, Kai
> 
> Hello! I realized I wrote the entire reply to this thread but forgot
> to press "send" ;)
> 
> I tried the firmware and new Nvidia 460 driver, unfortunately no luck
> with kernel because it is incompatible with that driver (I was getting
> compile errors from dkms, tried 5.11-rc7 and 5.10). So I am still on
> 5.8, if you know about any workaround for that I'd be happy to try :)
> 
> Best regards,
> Blazej

Maybe you are hitting this bug:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1906131

The workaround would be in comment #8.