I’m trying multiple displays for the first time. On my third one the mouse cursor cannot interact with anything in a qube. It is able to click and drag a window but nothing else. Feels like a bug but i’m not sure. The third monitor is rotated to the left to be used for my IDE. dom0 windows respond …

The correct output from dom0 was actually this Screen 0: minimum 320 x 200, current 5120 x 2640, maximum 16384 x 16384 so the correct number is actually 52800 and even with inputting qvm-features dom0 gui-videoram-min 52800 qvm-features dom0 gui-videoram-overhead 0 It still doesnt work at all …

Hi Nika Does this: [image] Windows don't receive mouse clicks after docking the laptop into a docking station General After docking my laptop and thus switching to an external display (laptop display off), all windows of qubes that had been running before docking have th…

it does. I did not troll the forum hard enough. whoops

I lied it doesnt I tried it and get this sed: cant read : No such file or directory

Hi Nika Are you willing to share the command you tried to run? :slight_smile:

I tried this one because it matched my use case. I have one external working great as an extended display for my laptop. It’s when a third display is added that things get weird. I have one display connected hdmi to hdmi. The other is USB C to hdmi. On that third display is where the mouse cannot in…

H Nika So it’s the calculation of the size, that fails … not the actual “set the gui-videoram-min”? Can you try manually calculating the maximum $WIDTH and $HEIGHT you’ll need … and then try the: qvm-features dom0 gui-videoram-min $(($WIDTH * $HEIGHT * 4 / 1024)) qvm-features dom0 gui-videoram-o…

Sorry I’m a little confused. For $WIDTH and $HEIGHT am I taking the literal W and H in inches and inputting them into that command? Also this could be incredibly silly of me but should i run that command with the third display plugged in?

Hi Nika The $WIDTH and $HIGHT is the resolution of the desktop you want. The command xrandr --verbose should (among other things) give you the values for your [current layout] … can you try these commands (and share the output)? xrandr --verbose | grep "Screen 0" xrandr --verbose | grep "Screen…

Sorry for the delay yesterday got hectic $ xrandr --verbose | grep "Screen 0" Screen 0: minimum 64 x 64, current 2560 x 2640, maximum 32767 x 32767 $ xrandr --verbose | grep "Screen 0" | sed -e 's/.*current //' -e 's/\,.*//' 2560 x 2640

Hi Nika Thanks – did it work with: qvm-features dom0 gui-videoram-min 26400 qvm-features dom0 gui-videoram-overhead 0 where 26400 is based on: echo "2560 * 2640 * 4 / 1024" | bc ? :slight_smile:

Mouse does not work on third display

User Support

ChrisA March 25, 2025, 8:37am 2

Hi Nika

Does this:

look like a solution to your problem?