have this issue for years but always attributed it to nvidia or kde and accepted to live with.
now I upgraded to Radeon RX 9060 XT and fedora 43 yet still, almost every system update that needs reboot ends with black screen on first boot. ctrl+alt+delete works there and I am able to reboot into fully functional and updated system.
how can I troubleshoot this?
You can use ctrl-alt-f3 to get to a text console.
Then you can login and look at logs with journalctl.
i checked historical logs, seems sddm thinks i have no outputs, next boot this message is not printed and sddm shows logon screen.
Nov 04 23:25:14 sddm-helper-start-wayland[2020]: “QSGContext::initialize: depth buffer support missing, expect rendering errors\nQSGContext::initialize: stencil buffer support missing, expect rendering errors\n”
Nov 04 23:29:59 sddm-greeter-qt6[2163]: There are no outputs - creating placeholder screen
Nov 04 23:29:59 sddm-helper-start-wayland[2020]: “qt.qpa.wayland: Creating a fake screen in order for Qt not to crash\n”
Try removing rhgb from the kernel command line.
There are reports that match what you are seeing.
ok done, since Ive no way to test this in timely manner, I’m gonna give it day or two if anyone else wants to chime in and mark as solved