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I updated to driver 520.56.06 on Fedora, and now my 4k DP monitor is just a black flashing screen. Has anyone else seen this?
This bug report seems similar, but a different model and driver.
Last edited by Liam Dawe on 21 October 2022 at 1:54 pm UTC
One resolution does it: 2560x1440, all other resolutions work. But as of this driver 520.56.06, that resolution just produces the black screen.
View PC info
Last edited by Ehvis on 21 October 2022 at 1:37 pm UTC
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after reboot everything's still working fine, no display problems, glxinfo says direct rendering is enabled, glxgears and vkcupe also run fine ...
maybe some incompatibility with the kernel version you're using? Manjaro currently recommends 5.15.74, though it has newer ones (even version 6 already)...
or is there some bug in KDE? (as I see Ehvis uses Gnome and also doesn't have any problems)
maybe disabling composit/desktop effects kde can fix that (had issues with that from time to time at work while i was still using kde there)...
or simply try a different desktop (not based on qt/kde-libs) to exclude kde from the list...
does the x-log (/var/log/Xorg.0.log) mention anything when you try using 4K?
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This was in the logs that kept spamming every second (cut a small portion of it)
https://pastebin.com/i6CuriDp
edit: yeah mine is fixed fully. switched to other greeter instead of the webkit2 one and all is working fine with 520.56.06. Probably some qt5 or lightdm updates that did that. So thats probably not related to Liam's issue. Just looked similar.
Last edited by Xpander on 25 October 2022 at 1:56 pm UTC
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maybe the problem is a bit more complex...
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lightdm-webkit2-greeter 2.2.5-6
lightdm 1:1.32.0-4
qt5-base 5.15.6+kde+r181-
replaced lightdm-webkit2-greeter with lightdm-slick-greeter 1.5.9-1 and all works perfectly. Maybe config problem also somewhere..anyway working fine with different greeter so not really feeling to dig deeper into it as i didn't care about how the greeter looks anyway :)
Last edited by Xpander on 25 October 2022 at 4:43 pm UTC