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+--- Thread: SOLVED: Startup with Hardware Accelleration (/t-solved-startup-with-hardware-accelleration)
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Startup with Hardware Accelleration - AlexDausF - 2025-05-28
Hi there,
I tried to set up Hardware Accelleration in my Jellyfin running in an Docker container. I used the How To here:
https://jellyfin.org/docs/general/post-install/transcoding/hardware-acceleration/intel#configure-with-linux-virtualization
It started up right but it could not open movies and I could not access the Administration / Playback/ Transcoding Area.
When I wanted to start a movie the player quit telling me it run into an issue. I have included the error output.
How can I proceed and try again?
Thanks for any help!
Alex
RE: Startup with Hardware Accelleration - theguymadmax - 2025-05-29
Post your docker config and the ffmepg log from a failed transcode.
RE: Startup with Hardware Accelleration - AlexDausF - 2025-06-01
I think I wasn't Patient enough! Sorry. The Web-Version wasn't up to date yet and my movies were not found. Now everything is working fine. The only thing is that intel_gpu_top is not showing anything. But I imagine that is because of the container?
Thanks a lot!
Alex
RE: Startup with Hardware Accelleration - bitmap - 2025-06-01
No, even being inside docker you'll see activity on intel_gpu_top. Seems like something is awry in your setup. Docker config and logs would be the next step. Use a pastebin site like privatebin.net.
RE: Startup with Hardware Accelleration - AlexDausF - 2025-06-02
(2025-06-01, 10:57 PM)bitmap Wrote: No, even being inside docker you'll see activity on intel_gpu_top. Seems like something is awry in your setup. Docker config and logs would be the next step. Use a pastebin site like privatebin.net.I have inclosed my logs in my first post. What config details would help? Where can I find the details you mean? Do you need the run command?
Thanks!
RE: Startup with Hardware Accelleration - bitmap - 2025-06-02
Nothing in the log regarding any transcodes, so you might have to trigger one with incompatible subs or something similar. You can also set the "quality" to something below the bit rate of the media you're using to test.
As for docker, yes, either the run command or the compose file.
RE: Startup with Hardware Accelleration - AlexDausF - 2025-06-02
Hi,
here is the run command:
docker run -d
--name jellyfin
--user 1000:1000
--group-add="105"
--net=host
--volume /home/alex/jellyfin/config: /config
--volume /home/alex/jellyfin/cache: /cache
--mount type=bind,source=/export/Filme,target=/media/filme
--mount type=bind,source=/export/Musik2,target=/media/musik
--mount type=bind,source=/export/Serien,target=/media/serien
--restart=unless-stopped
--device /dev/dri/renderD128: /dev/dri/renderD128
jellyfin/jellyfin
Here I have included my encoding.xml
https://pastebin.com/2YSPvdZp
Hope that helps. But there is no problem rendering. It just not seems to show in intel_gpu_top although it is much less CPU since I tried this run command.
Thanks for your help!
Alex
RE: Startup with Hardware Accelleration - AlexDausF - 2025-06-03
I have checked the QSV and VA-API codecs and the OpenCL runtime status here:
https://pastebin.com/LE9CMpY0
So actually everything should be fine? But intel_gpu_top does not work.
And there is something else: Is it an explanation that my system is a headless server? So there is no video output just streaming?
Thanks for your help!
Alex
RE: Startup with Hardware Accelleration - bitmap - 2025-06-03
Yeah that definitely looks like things are working as expected. Are you running intel_gpu_top as sudo? If not, it won't show anything. In fact, it warns me if I ever forget. I just tried to capture that warning and got errors and a core dump...whoops.
Attaching a screenshot of what intel_gpu_top looks like while I'm transcoding.
My question for you is this: when you're transcoding does your CPU usage go off the chart?
RE: Startup with Hardware Accelleration - AlexDausF - 2025-06-04
Thanks that's very helpful. So things are working. But now of course I would like to have intel_gpu_top working.
I run it as root by doing su - since I dont have sudo running. But I get a warning too if I run it as user. Without a core dump ;-)
The thing is I don't really know how I could trigger transcoding except simply playing a movie.
There are movies that trigger no CPU at all others trigger about 45% CPU since I set up hardware acceleration. Before these would trigger nearly 95-98% before. Thats why I started working on hardware acceleration in the first place. So its really better now.
I just don't get why intel_gpu_top does not work. The device I use in Jellyfin is /dev/dri/renderD128 The device intel_gpu_top uses is /dev/dri/card0 I have tried to give intel_gpu_top the render128 card with the -d flag, but that does not work either.
So any advice would be very appreciated.
Thanks @bitmap
Alex