#880050 No Display port audio with Nvidia driver 375.82

Package:
nvidia-driver
Source:
nvidia-graphics-drivers
Submitter:
Chris Elmes
Date:
2017-10-29 15:48:04 UTC
Severity:
important
#880050#5
Date:
2017-10-29 00:25:03 UTC
From:
To:
Hello,

Display port audio stops working after upgrading to version: 375.82, was
working on older version: 375.66

Debian stretch 4.9.0-4-amd64 #1 SMP Debian 4.9.51-1 (2017-09-28)

Nvidia Quadro k5200

Some more information found on Nvidia Dev talk site:

https://devtalk.nvidia.com/default/topic/1019761/linux/no-sound-using-displayport-audio-with-375-82-384-59-and-384-69/

From kernel log:
snd_hda_codec_hdmi hdaudioC0D0: invalid ELD data byte 0

Same output:
 monitor_present 0
 eld_valid 0
from:
 cat /proc/asound/card0/eld#0.*
As on Nvidia Dev talk link.
#880050#10
Date:
2017-10-29 15:45:29 UTC
From:
To:
Control: forwarded -1 https://devtalk.nvidia.com/default/topic/1019761/linux/no-sound-using-displayport-audio-with-375-82-384-59-and-384-69/
Control: tags -1 upstream

Thanks for the report, as you noted in the pasted link it's an upstream
problem, so not much we can do until they fix it.

Kind regards,
Luca Boccassi