You are not logged in.

#1 2018-11-25 13:59:03

abhocetabhac
Member
Registered: 2016-07-11
Posts: 7

nvidia-dkms-415.18-1 breaks HDMI audio

The DisplayPort/HDMI audio output of my GTX660 card stops after upgrading to nvidia-dkms-415.18-1. The device is still listed by "aplay -l" but does not produce sound. It appears as off to "pavucontrol". Downgrading to nvidia-dkms-410.78-1 solves the issue, though.

Any idea if it is a bug or a configuration matter?

Offline

#2 2018-11-25 15:33:37

zebulon
Member
Registered: 2008-10-20
Posts: 294

Re: nvidia-dkms-415.18-1 breaks HDMI audio

Same issue here, with a GTX970.In pavucontrol I can list the HDMI GM204 profiles, but all are marked "unavailable" and "unplugged".

Last edited by zebulon (2018-11-25 15:50:03)

Offline

#3 2018-11-26 16:06:12

abhocetabhac
Member
Registered: 2016-07-11
Posts: 7

Re: nvidia-dkms-415.18-1 breaks HDMI audio

Upgrading to nvidia-dkms-415.18-4 do not solve the issue either.

Offline

#4 2018-11-27 20:20:20

zebulon
Member
Registered: 2008-10-20
Posts: 294

Re: nvidia-dkms-415.18-1 breaks HDMI audio

Reported on nvidia forums (not by myself):
https://devtalk.nvidia.com/default/topi … 8-drivers/

Offline

#5 2018-12-08 15:34:01

abhocetabhac
Member
Registered: 2016-07-11
Posts: 7

Re: nvidia-dkms-415.18-1 breaks HDMI audio

The issue persists with version 415.22-1. Sad!

Offline

#6 2018-12-20 02:32:43

marcin123
Member
Registered: 2018-12-20
Posts: 1

Re: nvidia-dkms-415.18-1 breaks HDMI audio

Same still at 415.25

Offline

#7 2018-12-31 15:36:39

abhocetabhac
Member
Registered: 2016-07-11
Posts: 7

Re: nvidia-dkms-415.18-1 breaks HDMI audio

Being stuck to version 410.78-1 was an annoyance. Now, if paired with kernel 4.20, X fails to start. Upgrading to 415.xx turned obligatory. And the annoyance turned into a hindering problem.

Offline

#8 2019-01-03 06:08:28

zebulon
Member
Registered: 2008-10-20
Posts: 294

Re: nvidia-dkms-415.18-1 breaks HDMI audio

That is a problem, but please continue to report the issue upstream to https://devtalk.nvidia.com/default/board/98/linux/

Last edited by zebulon (2019-01-03 06:09:07)

Offline

#9 2019-01-15 10:24:00

zebulon
Member
Registered: 2008-10-20
Posts: 294

Re: nvidia-dkms-415.18-1 breaks HDMI audio

It looks this has been fixed, at least for me, but not with a driver update. I suppose there was a change of API in 415, which was matched in a new PulseAudio or other sound component?

Offline

#10 2019-01-21 18:04:15

zebulon
Member
Registered: 2008-10-20
Posts: 294

Re: nvidia-dkms-415.18-1 breaks HDMI audio

I note that I need to rebuild the driver (I use nvidia-dkms) to make the sound through HDMI work again, sometimes. I did not find out exactly what is triggering this, but this works now.

Offline

#11 2019-03-01 20:12:00

zebulon
Member
Registered: 2008-10-20
Posts: 294

Re: nvidia-dkms-415.18-1 breaks HDMI audio

It seems there is a race condition for this bug on my system. Sometimes the sound works, sometimes it does not after reboot. I would say it works 10% of the time.

Offline

#12 2019-03-20 06:35:16

zebulon
Member
Registered: 2008-10-20
Posts: 294

Re: nvidia-dkms-415.18-1 breaks HDMI audio

I have just made an observation that seems to confirm there is a race condition. I have rebooted around 20 times and collected dmesg outputs for 12 non-working instances and 6 working ones. But I also observed something interesting: when I reboot with the TV on, I noticed that:

  • when I see the boot screen of my motherboard (an Asus MAximus gene VIII) followed by the dmesg sequence and the KDE bootsplash then the sound is not working

  • sometimes after I reboot I do not see any image (TV displays a "No image" on TV, this comes from the TV itself) until I start to see the KDE splash (I do not see anything before that, no motherboard UEFI logo, no dmesg) then the sound works!

I can now confirm this happens 100% of the times. If I boot my computer and observe the Asus UEFI boot screen (the very first one when it proposes to press DEL to enter bios), I ctrl+alt+del to force reboot. If then the TV does not show the boot screen but a "No signal" (~ 25% of times) and only shows the computer image once it reaches the KDE splash screen, then the sound is working.

So there seems to be a pattern with the way the HDMI activates, and this is time based. Any idea?

Offline

Board footer

Powered by FluxBB