[Intel 12th generation Alder Lake / Hybrid CPU]

20 hours ago, MadMatt337 said:

In case anyone is curious, I am setting up a new server now with a 12600k and ASRock Z690 Steel Legend, my onboard NIC is working correctly (Dragon RTL8125BG) on 6.10.0-rc2

Is your NIC working at gigabit or 2.5 gigabit speeds.

My understanding is 2.5 gigabit support is featured in the linux kernel 5.15 and the current RC2 of unraid is 5.14

From what I have been reading 5.15 and 5.16 bring a ton of enhancements and stability to intel Alderlake in both Big Little Support, Graphics and 2.5 gigabit. So the next unraid RC3 should be pretty fire for us.

[Intel 12th generation Alder Lake / Hybrid CPU]

13 hours ago, DeadDevil6210 said:

Thanks for the assistant. I'm indeed on 6.10 RC2

So for a short overview:
In the modprobe.d folder i edited the i915.conf with the line blacklist i915
Intel GPU Top is installed
I have added the line i915.force_probe=4680 to go file (found in the rocket lake igpu topic)

And yes now it works! (h.264 and HEVC) thanks the only mistake I made was that I removed the blacklist line from i915.conf file

For everyone interested in power draw: my eve energy smart wall outlet says in complete idle power draw goes down to 10-20W when transcoding on cpu only it jumped instantly to 50-60W I can now test on gpu transcode powerdraw. These new gen intel cpu's seem to be promissing where a big-little design stands for  (living in The Netherlands and cost per kwh is insane here so very happy with these numbers)

(unraid OS is cpu pinned to E-Core 4)

Did you do any other modifications?

I rolled back all my changes and started with just

• Intel GPU TOP plugin
• Blacklisted Driver
• /dev/dri volume

With these HW Encoding still works for H.264, but not H.265/HEVC

I also tried adding the force_probe and that yielded no difference

[Intel 12th generation Alder Lake / Hybrid CPU]

Thanks for the helpful info.

Running a new Unraid Server with a 12700K. With the steps outlined here I was able to get the GPU recognized by the host and passed through to plex.

HW Transcoding is working great for H264. 

There seems to be an issue with HEVC transcoding. Unlike H264 which normally utilizes the video encoder as expected. I see 2-3~ seconds of a 100% spike on 2 random CPU cores and the Video 3d Render usage. followed by no activity and tons of errors from plex.

Is anyone else able to get HEVC transcoding working with these new chips?

The end result is the video just hangs in plex and never plays.