My vanilla VMs are 5.8 kernel. I don’t understand why you’re at 5.4 unless you haven’t updated to the HWE kernel.
Just installed the server directly from the iso via the Ubuntu site. With all updates its only at 5.4. Standard installation of Ubuntu Desktop gets 5.8.
ubuntu hwe → Kernel/LTSEnablementStack - Ubuntu Wiki
basically, newer kernels that are fully supported and tested on a given release. This is how you get 5.8 on 20.04, and how you will get 5.13 (or 5.14) when they release it in august.
@BobSnot thanks for the link.
Ran sudo apt install --install-recommends linux-generic-hwe-20.04 . Gonna test it out .
@ChuckPa Seriously I did only download the offificial ISO to an USB stick. Installed and updated the system with sudo apt-get update and sudo apt-get upgrade .
Trying 5.8 which it installed now 
Ok so far so good
Fresh clean install of Ubuntu server 20.04LTS
uname -r
5.8.0-49-generic
plex@plexserver : ~ $ cat /etc/os-release
NAME=“Ubuntu”
VERSION=“20.04.2 LTS (Focal Fossa)”
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME=“Ubuntu 20.04.2 LTS”
VERSION_ID=“20.04”
HOME_URL=“https://www.ubuntu.com/”
SUPPORT_URL=“https://help.ubuntu.com/”
BUG_REPORT_URL=“https://bugs.launchpad.net/ubuntu/”
PRIVACY_POLICY_URL=“https://www.ubuntu.com/legal/terms-and-policies/privacy-policy”
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal
With this kernel PMS located the GPU for hw transcoding the first time Ran a test - was running.
Crossing my fingers
Thanks for the great support guys. Appreciated.
Oh well - crashed again last night . Dont know what actually caused it, I saw that the temperature of the CPU was a 95. Only 1 on the server who was transcoding the sound only.
Testing with no hw transcoding since its got plenty of power to grind
Kernel is waaayyyy more stable than 5.11.13
95c or 95f? 95c is not yet fatal but pretty close to it. (100c is cooked)
there might be something in the system logs to identify the crash.
journalctl -b 1
will output everything in the logs from the prior boot (-b 0 = very last boot, -b 2 = 2 boots before etc)
95c
Thanks for your help , will check it out.
I had to do some reinstall - did some other testing last night which messed up my server . But I will monitor it closely and report back .
For now I will only run the server without transcoding.
95C ? 
Not good.
heat sink compound? Cooling solution inadequate ?
Well @ChuckPa
New product , prolly buggy lol.
New firmware released, gonna install
Will keep you posted . Testing server tonight with hw transcoding disabled .
Any bandages left ? 
If that doesn’t work, you might want this. 
Maybe
Server online all night so far
Any solution for this yet ?
Still running that RocketLake CPU ?
If so – sadly none that I’m aware of.
You would be the first to know ---- it would arrive in as a Kernel update. (new kernel version)
You’re right. My error.
TigerLake CPU.
Either way, still ahead of the kernel support curve.
Well have wait wait … and wait some more
Cheers for the update @ChuckPa
Cheers @ChuckPa
So this is the solution?
Will Plex team make this work out of the box with a server update? Or am i forced to install a new Ubuntu and install the packages?
