Blank sddm screen on fresh install of Kinoite

Hi everyone,

I installed Fedora Kinoite 42 on a new PC (this one) and am greeted by a 4k blank (light gray) screen that does not react to input.

I can switch to the text console (alt-ctl-f2) and log in with my user. Sddm is running. Restarting it doesn’t help. I couldn’t find anything suspect with journalctl (but didn’t know what to look for). I tried a few GPT suggestions without success. I found this question here, but I don’t have a nvidia gpu. I couldn’t find anything in the Kinoite troubleshooting.

I would appreciate any help.

Welcome to Fedora @aktenbagger.

Can it be that you use a shell other than bash? If yes then you probably still hitting this issue:

Did you try to update your Kinoite in terminal since you installed it?

p.s.
if everithing fails you might have to put a kernel parameter for an other resolution. However with a wrong resolution you should be able to log in if you can do it without seeing the user and the login field.

Thank you for your suggestions. Bash is indeed the shell for my user. The 4k resolution is fine, as I have a 4k display attached. I just wanted to mention it, to say that the screen does not have a low “fallback resolution” because of, e.g., issues with the graphics card.

The installation is as out-of-the-box as it can be. So the home directory was created by the installer and without previous content.

I tried the update now, but got to the same light gray screen after rebooting.

I think the problem was caused between graphics card (AMD radeon graphics) and screen (Aorus FV43U) by usage of 4k@120Hz via HDMI 2.1.

Since Kinoite didn’t work, I installed debian trixie. Sddm worked fine there, but I got a blank screen after logging in. Sddm let me select Xorg instead of wayland and there everything worked. I noticed the screen refresh rate was set to 60 Hz and I got the same blank screen when setting it to 120 Hz. So I forced 60 Hz for wayland, and things worked out there too. Interestingly with the DisplayPort cable, 144 Hz works fine.

Indeed - HDMI 2.1 isn’t supported on AMD on Linux. See this thread:

and the upstream ticket:

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