Hello, I recently changed from a 2080 Super to a RX 9070 XT on the 2nd. Removed the nvidia drivers, installed AMD drivers and it worked until today (July 7th). Now whenever a program that requires/uses hardware acceleration (videos, games, discord) my main monitor only will go black until the prog…

This might not be definitive due to the complexities of how power is delivered by the PSU, but are there other components you can temporarily disconnect to attempt to test the PSU under lower load?

Not really. I used a powered USB hub for most things to take load off the USB ports (I did unplug and see if that changed anything and it did not)

I think your hypothesis regarding the PSU has some legs to it, but it’d be nice to be certain before forking out for a new one. I don’t suppose you have access to another you can hook up temporarily to test (just connect it from outside the case, to the motherboard, GPU and any drives that might ne…

I do. This might have to be a tomorrow thing so I will update you then. My PSU has a 10 year warranty so it’s not like I will be paying for a new one if needed.

Hooked up another PSU, issue still persists. Wondering if it could SOMEHOW be the displayport cable on the other monitor causing a weird issue/short when two screens are plugged in. I might have another to try any test. EDIT: I remember the last thing I did the night before was use the Fusion 360 …

[image] Only main monitor is going black when memory clock changes at all. It’s fine if it never changes or is the only screen plugged in.

Swapped the Displayport cable and the HDMI cable around and it doesn’t happen anymore. This is so weird/odd. I shouldn’t have been hitting the max for the cable after using it for 4 years with no issues and all of the sudden there is one.

It’s great you were able to isolate the issue :smiley::+1: Not all HDMI cables are equal. To achieve reliable 2560x1440 @ 120Hz, you’d need a cable that complies with at least HDMI 2.0. Other factors come into that too, such as cable length, cable condition, etc. It’s the reason I suggested: …

Swapped back PSUs and now it’s happening again on the XF240H (the one with the HDMI now). I can’t figure out what it’s tied to this time though. Going to try out a few different HDMI cables inxi -SMGxx --za output: Kernel: 7.0.13-arch1-1 arch: x86_64 bits: 64 compiler: gcc v: 16.1.1 Desktop: …

The thing is, I’ve been using the same cable for 4 years and it’s hdmi 2.0 compliant and doesn’t have this issue in windows There’s also a post talking about flickering bug in plasma 6.7. When was the most recent release of 6.7.2 pushed to EOS?

Nvidia to AMD swap. Main monitor going black with gpu accelerated task

General system Kernel, boot, graphics & hardware

girlypop July 9, 2026, 1:18pm 22

Found the post again