Hello @3v1n0 Still no luck. I added ci-train-ppa-service/4112 ppa and restarted the session. There are logs (see attachment).
Bellow some info of my hardware: $ inxi -G Graphics: Device-1: NVIDIA GP104 [GeForce GTX 1080] driver: nvidia v: 440.100 Display: x11 server: X.Org 1.20.8 driver: nvidia unloaded: fbdev,modesetting,nouveau,vesa resolution: 3840x2160~60Hz OpenGL: renderer: GeForce GTX 1080/PCIe/SSE2 v: 4.6.0 NVIDIA 440.100 $ lshw -c video *-display description: VGA compatible controller product: GP104 [GeForce GTX 1080] vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:06:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nvidia latency=0 resources: irq:66 memory:fa000000-faffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:e000(size=128) memory:c0000-dffff $ lspci | egrep -i vid\|vga 06:00.0 VGA compatible controller: NVIDIA Corporation GP104 [GeForce GTX 1080] (rev a1) 06:00.1 Audio device: NVIDIA Corporation GP104 High Definition Audio Controller (rev a1) $ xrandr Screen 0: minimum 8 x 8, current 3840 x 2160, maximum 32767 x 32767 DVI-D-0 disconnected (normal left inverted right x axis y axis) HDMI-0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 600mm x 340mm 3840x2160 60.00*+ 59.94 50.00 30.00 29.97 25.00 23.98 2560x1440 59.95 1920x1080 60.00 59.94 50.00 29.97 23.98 1600x900 60.00 1280x1024 60.02 1280x800 59.81 1280x720 60.00 59.94 1152x864 60.00 1024x768 60.00 800x600 60.32 720x576 50.00 720x480 59.94 640x480 59.94 59.93 DP-0 disconnected (normal left inverted right x axis y axis) DP-1 disconnected (normal left inverted right x axis y axis) DP-2 disconnected (normal left inverted right x axis y axis) DP-3 disconnected (normal left inverted right x axis y axis) DP-4 disconnected (normal left inverted right x axis y axis) DP-5 disconnected (normal left inverted right x axis y axis) ** Attachment added: "gnome-shell logs" https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1870736/+attachment/5387336/+files/debug-mutter.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1870736 Title: [nvidia] Screen scaling 125% gives 200% To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1870736/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs