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Bug 685904 - kernel >5.1.0 - HDMI audio output produces (white?) noise
Summary: kernel >5.1.0 - HDMI audio output produces (white?) noise
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: AMD64 Linux
: Normal normal (vote)
Assignee: Gentoo Kernel Bug Wranglers and Kernel Maintainers
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-05-13 20:59 UTC by atosser
Modified: 2020-01-18 20:19 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---

Attachments
.config for gentoo-sources (.config,108.84 KB, text/plain)
2019-05-20 22:32 UTC, atosser 		Details
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Description atosser 2019-05-13 20:59:42 UTC 
Direct upgrade from kernel 5.0.2 (problem does not exist). All audio run over HDMI (via nVidia gfx card - proprietary drivers) contains large amounts of static distortions (does not affect USB audio). Almost as if the levels are too high (unsure). If I boot back into 5.0.2 the issue vanishes.

Reproducible: Always

Steps to Reproduce:
1. Upgrade kernel 5.1.1
2. Use nVidia HDMI out to TV.
3. Enjoy noise.
Actual Results:  
All audio plays with distortion and static.

Expected Results:  
Clear audio
Comment 1 atosser 2019-05-13 21:52:10 UTC 
After testing numerous kernels (5.0.12 5.0.15 5.1.0 5.1.1) I can confirm that the bug is introduced in version 5.1.0.
Comment 2 Alice Ferrazzi Gentoo Infrastructure gentoo-dev 2019-05-19 19:36:48 UTC 
can you attach your .config?
Comment 3 Alice Ferrazzi Gentoo Infrastructure gentoo-dev 2019-05-19 19:37:53 UTC 
what nvidia driver are you using ?
Comment 4 atosser 2019-05-20 22:32:26 UTC 
Created attachment 577436 [details]
.config for gentoo-sources

As requested, the .config for my kernel used with nvidia 430.14
Comment 5 atosser 2019-05-20 22:33:34 UTC 
x11-drivers/nvidia-drivers-430.14 was used for this, the card in question was a GTX 670. (I no longer have this device and I have not reran the test yet for the newer kernels.
Comment 6 atosser 2019-05-20 22:56:58 UTC 
Just ran another test on 5.1.3 and the problem affects my new gtx 1660ti as well.
Comment 7 atosser 2019-12-19 05:22:54 UTC 
This issue self resolved in kernel 5.2 - 5.4.0 but has resurfaced in 5.4.5.
Comment 8 MZ 2019-12-19 17:40:14 UTC 
i have same problem.

nvidia-drivers-440.44-r1 + gentoo-sources-5.4.5

helped patch from

https://bugs.archlinux.org/task/64847

https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/?id=6fd739c04ffd877641b01371f9fde67901e7f9cb
Comment 9 Mike Pagano gentoo-dev 2020-01-18 20:19:28 UTC 
This patch is in the 5.4 stable tree: 

https://www.spinics.net/lists/stable-commits/msg140348.html

Specifically, 5.4.6