HDR Tone Mapping Broken in Docker again

Plex Media Server
,
1

Server Version#: 1.26.1.5798
Player Version#: latest Plex app for tvOS

Previous issue is back again. Linuxserver docker container for Plex is not hardware transcoding when HDR Tone Mapping is on and playing HDR content. They had fixed this originally a few months ago but the problem is back. They have confirmed it’s not an issue in their container and said issue is upstream either with Plex or with Intel drivers. Looks like Plex updated recently. I’m not 100% sure when the issue started but first noticed it today when a friend was trying to stream off me because he has to transcode 4K HDR content down to 1080p. It did work up until recently though.

Validated the issue using the Chrome player and the issue goes away if HDR Tone Mapping is disabled.

I have an Intel 9900K CPU and passing /dev/dri into the container which has always worked.

Attaching logs
Plex Media Server Logs_2022-05-15_18-01-46.zip (365.2 KB)

1 Like
2

it definitely is a problem with the container. Have the same problem and downgrading container fixed it. If you want to test change repository to linuxserver/plex:1.25.9.5721-965587f64-ls109

In that image version hw transcoding with HDR tone mapping enabled works even in latest Plex version.

3

Same issue for me!

4

I’m being told potentially Intel driver issue since that’s what changed in the container. How do we get this resolved between Plex and Intel?

5

Being told by Linuxserver folks that the change to the container was an automatic driver update off the Intel repo. They refuse to downgrade because they don’t want to manage it and insist the issue needs to be fixed by either Plex or Intel.

6

The folks at Linuxserver just made a change to pin the Intel driver version to the one used by the official Plex container. Just have to wait for the build and then this should be fixed.

7

Fixed in latest release of Linuxserver Plex docker! Just tested it

8

thanks for the heads up, will test

9

Seems to be broken again on latest version

10

rolling back to 1.27.1.5916-6b0e31a64-ls122

11

Can someone at Plex help with this? Linuxserver container folks are saying it’s not them, haven’t made any changes to their container. This feature keeps breaking regularly unfortunately

12

they say that no changes are made to container but there is an intel package update:

intel-igc-cm1.0.128+i699.3~u20.04
to
intel-igc-cm1.0.160+i755~u20.04

Plex needs to review support for newer intel packages?

13

Just to document my findings (unRAID server / Plex docker container).

Hardware transcoding (quicksync) doesn’t work in 1.27.2.5929 when HDR tone mapping is enabled. Hardware transcoding works when disabling HDR tone mapping.

Reverting back to 1.27.1.5916 restores full functionality. Hardware transcoding works with HDR tone mapping enabled.

14

Same issue being seen in my setup up as well

15

Updating my findings due to the latest beta being released.

Hardware transcoding (quicksync) now works in 1.28.0.5973 when HDR tone mapping is enabled.

16

this was already the behavior in previous linuxserver updates, Plex needs to update to address this

17

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