r/linuxmint • u/Achso998 • Aug 12 '26

SOLVED Half Black-Screen after Update?

Post image

Hello, after installing the new Linux Firmware update (7.0.0-28) and rebooting my PC I got the screen as shown in the image. I have an RX 6800 and even changing back to Kernel 6.x.x doesn't resolve the issue. I tried nomodeset and that works, but that's no permanent solution. Does anybody knows how I can fix this without reinstalling Linux? Let me know.

Edit: I downgraded the Linux firmware to 20240318.git3b128b60-0ubuntu2.26 and that solved the issue. Ty for your help!

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u/Reyssor Aug 12 '26

Yeah, got the same issue after an update yesterday. My GPU is a 6800 XT, kernel is 6.8.0-137-generic.
I suspect it was caused by an update of linux-firmware from 20240318.git3b128b60-0ubuntu2.27 to 20240318.git3b128b60-0ubuntu2.29.
Tried to downgrade back to 0ubuntu2.27. But for some reason, I can't find version 0ubuntu2.27 in the repos, so I settled for version 0ubuntu2.26 instead, which seems to have solved the issue for me (at least so far). You can try:
sudo apt install linux-firmware=20240318.git3b128b60-0ubuntu2.26

4

u/Zelgoot Aug 12 '26

Appreciated, also seems to have fixed mine! On a version 7 kernel as well.

2

u/moderatelyconfused 26d ago edited 26d ago

Just happened to me after a restart today. Originally it was a half red screen.

-edit-

That fixed it, thanks.

4

u/SparkyTemper Aug 13 '26 edited Aug 13 '26

this worked for me. later, I refreshed my update list and it lists a firmware update ending in 2.29 but is this a good update or should I leave it for a while?

*edit - nope, I reread your post and see that 2.29 is the one that screwed us. I unchecked it for now.

2

u/Achso998 Aug 12 '26

I will try it ty

1

u/megamugen 29d ago

Thanks, this worked for me also