I have an Intel Alder Lake iGPU and for some reason transcoding is no longer working. I upgrade to 6.12.2 on release day but have only just attempted to transcode a file. Direct play still works fine but if something needs transcoding i get a playback error about their being no transcoding engine available (or something to that effect). I have changed any settings in the Hotio Plex Docker or the settings within Plex itself and when I open a terminal and go "cd /dev/dri/" and then "ls" i still see "card0 renderD128" so everything looks like it should work. I've exhausted all my limited Unraid skills so i'm a bit clueless as to what's gone wrong.

If anyone could help me out i'd really appreciate it. Thanks.

Sorry to bump my own thread but id love to try and get this sorted before I go on holiday tomorrow. 
 

Ive tried using a different plex docker and.created a brand new server but unfortunately the problem persists so it seems like it must be Unraid causing the issue?

Hi,

Unfortunately myself and others have the same issue and it comes down to an i915 Driver issue on Kernel 6.1.x which Unraid 6.12.x uses so im really hoping for a new Unraid release with a newer Kernel but I reckon thats a long way off 😢 

 

In the meantime, check out the following post on the Plex forum. As a quick fix you can either disable Tone Mapping or you can downgrade your plex container to the version mentioned in the post below 😀

 

Hope that helps, at least for while you are away on holidays.

 

https://forums.plex.tv/t/hdr-tone-mapping-with-hw-transcoding-not-working-for-12900k-cpu-on-pms-version-1-32-5-7210/845595?u=v3nom

Edited July 12, 20232 yr by Titan84