Am Samstag, 7. Juni 2025, 14:25:14 CEST schrieb Charles Curley: > > > However, when booting the installed system, I see the following: > > Grub menu on both screens, but internal screen rotated by 90° > > After "Loading initial RAM disk", the internal monitor goes blank > > (backlight still on). The HDMI monitor works flawlessly. > > How does the internal display work if you boot from a cold start > without the external display?
I forgot to mention this in my original post: The internal monitor behaves the same, whether or not the external one is connected. I.e. if I boot with "nomodeset", then I get a picture, rotated by 90°, and without the "nomodeset", the screen goes blank during the boot process. > > XFCE may handle this directly: settings-> Display, and set the rotation. > > Or you might install arandr. Use it to get things set up as you like. > Then have it export a script. Hook that script into your startup. I > usually have XFCE run it from its autostart stuff. The problem is, when I boot with "nomodeset", i.e to have any picture at all on the internal display, I can't rotate the screen using xrandr (or KDE systemsettings or XFCE display settings). From my (very limited) knowledge of linux graphics, I would assume that with "nomodeset", no proper driver for the graphics card is loaded and it operates in some standard VGA compatibility mode where I can't change any settings.
