Hardware Transcoding Crashing CentOS 7

Plex Media Server Desktops & Laptops
1

Hey Guys,

I just got some hardware to support Plex Hardware Transcoding. It functions out of the box with CentOS 7.

I have found after about 20 seconds of Hardware Transcoding the entire system becomes unstable and crashes in a frozen state… I have to do a hard reset to get things back online.

I cannot find anything in the logs.

Any ideas where I should be looking?

Here are the specifics:
Hardware
Motherboard - SuperMicro X11SSH-LN4F, Chipset 236
CPU - Intel Xeon 1275V6 (Intel Quick Sync Support)
Ram - 32Gb DDR4

Software:
OS CentOS 7.4 64Bit, Kernal 3.10.0-693.17.1.el7.x86_64
Plex - 1.11.3.4793 64Bit

Transcoder Log:
pastebin.com/0NQzZaUR

2

I think your issue might be that centos uses an older kernel than what the support site says is required.
https://support.plex.tv/articles/115002178853-using-hardware-accelerated-streaming/

fedora 26 shipped with 4.14.x centos still uses 3.x
https://fedoraproject.org/wiki/Kernel

3

Hey ,

Where does it give a minimum kernal version requirement on that page?

4

@the_alchemist_9 said:
Hey ,

Where does it give a minimum kernel version requirement on that page?

It does not say the version. But both ubuntu and the fedora versions mentioned use 4.x. I was given this information when looking into another issue. https://forums.plex.tv/discussion/comment/1588964/#Comment_1588964

5

Hey,

OK ill upgrade the kernal and see whats what.

6

@the_alchemist_9 said:
Hey,

OK ill upgrade the kernal and see whats what.

Cool. Again I am not sure that is the issue but if it were me that is where I would start.

7

No worries. Im still playing with this new server so no risk.

8

Confirming, a Fedora/Redhat kernel 4.10 and above is the required.
The minimal supported Fedora distro version is Fedora 26.

Hope this helps shine some light on the issue.

9

Gents,

This has helped. I’m doing some testing now.

I used this guide to upgrade my kernal:
howtoforge.com/tutorial/how-to-upgrade-kernel-in-centos-7-server/

I will do some testing and if all goes well I will update this post with the steps from start to finish to have HW Transcoding running on CentOS7.

forums.plex.tv/discussion/307661/hardware-transcoding-quick-sync-centos-7-4/p1?new=1

10

New Kernel did not help. Still Crashing.

11

What happens? You refound the new server or did you find a solution?

12

I need the full ZIP from the session which crashes… DEBUG logging, VERBOSE OFF.
The transcoder log alone is insufficient.

I also need to see the udev rules and directory listing of /dev/dri along with one block of CPU info from cat /proc/cpuinfo with processor flags.