Dear Charles, On Monday, September 9, 2019, 1:55:06 PM GMT+2, Charles Curley wrote:
>> On Mon, 9 Sep 2019 10:20:37+0000 (UTC) Jan Michael Greiner wrote: >> With Debian Stretch (9.8) I had the display running with 3840x2160 >> resolution at 24Hz reduced blank. >> [What worked with Debian Stretch (9.9)] >> export modename="3840x2160_24.00_rb" >> xrandr --newmode $modename 209.75 3840 3888 3920 4000 2160 2163 2168 2185 >> +HSync -Vsync >> xrandr --addmode HDMI-1 $modename >> xrandr --output HDMI-1 --mode $modename >> [Problem with Debian Buster (10.1)] >> xrandr --output XWAYLAND1 --mode $modename >> xrandr: Configure crtc0 failed >And I take it you want to reproduce that on Debian 10 (buster). I > suggest you: > * Install arandr. >[...] Thank you for making me aware of arandr. However, from what I learned: - arandr is merely a graphical tool for xrandr, so if something does not work with xrandr, arandr will not be able to help - I did not see any option in the arandr gui to add a non yet existing resolution (and I would like to add a 24Hz reduced blank resolution) To rephrase my question: How can I enable a custom screen resolution and refresh rate (with my specific modeline) with Debian Buster (Wayland)? Thank you and best regards JM