Ubuntu QuickSync Hardware Transcoding Suddenly not working

Plex Media Server Desktops & Laptops
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Server Version#: 1.32.6.7468
Player Version#:4.114.3

Ubuntu 20.04.6 box with an i3 10100 - no docker

I’ve been using HW accelerated transcoding for a very long time on this system. A night or two ago, I noticed it had slowed down to a stuttery crawl with HDR to SDR tone mapping. Hop over to the server, it’s not using HW acceleration, just the poor i3 getting slammed with software transcoding. With HDR to SDR tonemapping disabled, no issues, hw acceleration works as expected (just very washed out video stream.)

The system has a display connected, all of the necessary settings are turned on.

Plex lifetime pass so that’s not the issue.

Here’s a chunk of the log

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image998×501 162 KB

image
image1645×497 152 KB

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That segment of the Alerts display doesn’t tell us enough about what’s happening.

Can you please do the following?

  1. Confirm DEBUG server logging is enabled
  2. Recreate the playback failure ( 20 seconds will do)
  3. Download the server logs ZIP file
  4. Atttach that ZIP file here.
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Plex Media Server Logs_2023-09-02_12-40-01.zip (982.3 KB)

4

Possibly relevant:

Can you test with PMS version 1.32.5.7349 (the latest stable release)? Based on the experience of the OP in that thread (and my own), there appears to have been a regression.

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@coltonba6

Back down the version please.

I am seeing reports of a HW regression in 1.32.6.

( Fix subtitles – break something else … It’s a fragile hackery mess in there )

1 Like
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That seems to have worked. Thank you, so happy to have this finally resolved.

How do I keep it from installing the new versions?

I see the option to change the update “channel” between beta and public, but is there a way to ensure it will never auto-update? I’m not even sure if that is the case here, or if it was possibly the Ubuntu “you have updates” prompt that I blindly agreed to.

7

On Linux:

  1. Disable the repository (if you enabled it)
  2. Linux updates are manual by default – unless you use the repo or another tool.
8

.I have the same issue, Fixed it in my docker-compose.yml file to be:

image: plexinc/pms-docker:1.32.5.7349-8f4248874

Hopefully this will be fixed soon.

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yes, rolling back to this version fixed it for me too - Plex official docker image

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