Hi guys.

So I was running an old 780 which was needed to boot because my cpu is AMD 3600xt with no iGPU.

Ive installed the a380 arc in hopes to transcode with plex and tdarr etc.

First off, the machine wouldn't post just using the a380 and MB VGA light was on. Couldn't change bios. Added the 780 back to 2nd slot and it posts with that card. Checked bios for cms being off and resize bars being on.

Can only post with the 780 in.

Onto unraid 7. Installed intel top gpu and gpu stats and it recognises the card but won't give any stats back.

/dev/dri doesn't exist and plex fails when I try add the device to it.

Any ideas.

Thanks ahead

Edited August 13, 2025Aug 13 by Tormox

2 hours ago, Tormox said:

Hi guys.

So I was running an old 780 which was needed to boot because my cpu is AMD 3600x with no iGPU.

Ive installed the a380 arc in hopes to transpose with plex and tdarr etc.

First off, the machine wouldn't post just using the 380 and MB VGA light was on. Couldn't change bios. Added the 780 back to 2md slot amd it posts woth that card. Checked bios for cms being off and resize bars being on.

Can only post with the 780 in.

Onto unraid 7. Installed intel top gpu and gpu stats and it recognises the card but won't give any stats back.

/dev/dri doesn't exist and plex fails when I try add the device to it.

Any ideas.

Thanks ahead

Do you know which driver you are using and any entries in the syslog, Post diagnostics if you don't know where to look.

I'll check it out after work. Someone has suggested I update the VBIOs of the card as well. I'll get back to you later with results.

Thanks

It turned out to be VGA detection in the bios. Was set to auto. I changed to ignore and it posted and worked instantly in unraid. Plex worked and now tdarr is transcoding

Than you for the help.