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yoloninja avatar Ubuntu

Bizarre and Temporary black screens in ubuntu 20.04.3 LTS

cn flag
yoloninja

After maximizing applications, sometimes they cause the screen to go blank - maximizing YouTube will work fine, until it doesn't and I have to exit full screen using a keybind, and go back into it. Games will either alternate rapidly between the screen functioning, and it working - or, it will not work during certain scenes. A good example is in Valheim, during regular gameplay it will exhibit the behavior above, but during the menu with the campfire where you choose a character the screen will completely blank, and only alt-tabbing out of the game, or running it in windowed mode will fix it. all games tested (99% of which were native) will replicate this issue.

Sound will still play, the game is still running - but even the Ubuntu UI is not visible, the screen appears the turn off, but minimizing or running it windowed will immediately fix it.

Neofetch Output and Specs

Intel i5 4460

RX 570 4GB

SSD 240Gb

HDD 500GB

Asus H81

16GB DDR3

600W EVGA PSU

RGB strip for extra FPS

There are also some cavats: I'm currently running the https://repo.radeon.com/amdgpu/21.40.2/ubuntu repo, as I had issues with the GPU on Ubuntu 21 until i downgraded to 20 LTE. Another is I'm using a D-sub to VGA cable - this is because of the design of my case, as a lip near the more useful ports on the card block the plastic housing of the cables, but not the thin metal of the d-sub connector. this has suited me fine so far, as the other two HDMI connections on my monitor are currently occupied - but its worth mentioning

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MikroPower avatar
ro flag
MikroPower
You have 3 graphic-ports (2x hdmi, 1x vga) and only the one analog port have this problem? Is it not possible that the contact is only bad or the cable broken. Did you try an other cable? If the hardware is really not the problem, then we can take a look at the log-files.
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yoloninja avatar
cn flag
yoloninja
No, I haven't tried another cable, I had to buy one especially for the pc. Any idea where I can find the log files for this?
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