I recently replaced my igpu with an Arc A380 for transcoding. However certain episodes of different shows cause the transcoder or all of plex to crash. I have the latest drivers in my VM, not all episodes and so far no movies cause it. They are all HDR-SDR transcodes. Doesn’t matter the resolution, still crashes. I’ve attached my logs and the errors I get from systemctl:
Mar 12 18:08:53 brm-media-1 Plex Media Server[16344]: Abort was called at 134 line in file:
Mar 12 18:08:53 brm-media-1 Plex Media Server[16344]: /home/runner/_work/plex-conan/plex-conan/.conan/data/intel-compute-runtime/24.17.29377.6-13/plex/main/build/96953c44c3aa1e3d81776274f854d01e9cbd0473/compute-runtime-24.17.29377.6/shared/source/utilities/reference_tracked_object.h
I am pulling my hair out over this. Its sometimes crashing everything and sometimes falling back to cpu transcoding. Any Help is much appreciated.
Plex Media Server Logs_2026-03-12_18-53-18.zip (3.2 MB)
Please do the following;
- Confirm server DEBUG logging is enabled, VERBOSE logging is disabled.
SAVE if changes.
- Restart PMS
- Give it two minutes to start and stabilize
- Start a playback which shows the issue
- Let it play for 20 seconds
- Stop the playback
- Download the server logs
- Attach the logs so I may see them.
Also you have your allowedNetworks setting set incorrectly (shouldn’t be related to the issue, just something you should fix).
ERROR - Error parsing allowedNetworks entry ' 10.10.100.0 255.255.255.252': Invalid argument [system:22]
This setting
Hey Thank you for such a quick reply. Sorry about having the verbose on. Hre are the new logs. And thank you for catching that network error! I was wondering why it had issues still. Just a little context. This is a brand new VM I spun up after I believed it was an issue with the LXC I was using. Drivers should be recent and Im running on Ubuntu 24.04. Please let me know what else I can provide.
Plex Media Server Logs_2026-03-12_19-52-43.zip (2.9 MB)
Sorry for the double reply, I tested a few more things and even movies are doing it. It just the last 2-3 minutes is when it decides to crash or fall back onto CPU transcoding. Dovi/HDR/HDR10 etc all do it. Most of these are remuxes or the direct rip.
Is there an error that you’re seeing at the end of the video? Is this only happening when watching in a browser or any other client?
It happens on any client. I am not getting the errors now, but I was last night. Something in the lines of “ Transcoder failed to play back media” and “an error has occurred” Since moving to the VM I havent seen those errors, just the CPU being spiked towards the end of shows/movies and the intel arc gpu no longer being used.
Another thing, It seems to maybe be an issue with tone mapping? If I disable tone mapping or enable the HVEC encoding (always) it doesn’t seem to do it. Only when converting from HVEC to h264, etc
Excellent troubleshooting and reporting. I’ll get an issue created to track this. Thanks for reporting!! 
Thank you so much! I appreciate all you do 
Hey another update. It is now crashing in the middle of some episodes of “The Pitt”. Not sure if there are other shows it will do it with but its doing the same behavior. Just reverts to software transcoding. Any idea what is causing this? I am on the latest kernel and drivers as well.
Is this still true?
The issue is likely driver related but it’ll be something that needs to come from Plex. If you can get by with disabling tone mapping or enabling HVEC always, that might be the best course until around release comes out that addresses your issue. Sorry for the frustration this is causing and sorry again, I do not have any ETA for a potential fix.
It isn’t. enabling hvec is (for now) what is causing it to not crash. Going from vec to 264 now causes the software transcoder to kick in. Doesn’t seem to matter if its HDR or not either.
