https://bugs.kde.org/show_bug.cgi?id=511490
Be <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #4 from Be <[email protected]> --- I am also encountering this on a Lenovo Yoga 920-13IKB laptop with only an Intel integrated GPU. I have a 3840 x 2160 external LG 32UN550-W 2023 monitor connected via a USB-C to HDMI cable (the laptop has no HDMI ports to test with). The bug doesn't manifest until a few seconds after the monitor is plugged in. The popup that usually appears when a screen is plugged in that lets me choose how to configure the displays does not get shown. It is not just the display that freezes, but all keyboard input freezes too. This prevents switching to a TTY with Ctrl + Alt + F#. The only way to get the system to respond again is by unplugging the monitor or pressing the power button to shut down. I installed GDM and switched to it (systemctl disable sddm && systemctl enable gdm, then reboot) for testing. GDM and GNOME both work fine with the external monitor plugged in. Trying to start a Plasma session from GDM with the external monitor plugged in fails. Logging in with the monitor unplugged then plugging in the monitor reproduces the freeze, so it is not just SDDM that is affected. -- You are receiving this mail because: You are watching all bug changes.
