Trying to set 1920x1080 resolution on AWS ubuntu EC2 with GUI enabled but its not working.
Error :-xrandr: Failed to get size of gamma for output default
xrandr: Configure crtc 0 failed
Updated /etc/gdm3/custom.conf to uncomment
WaylandEnable=falsebut still failing
Tried below mentioned commands :-
awsgui@<ip>:~$ xrandr --newmode $(cvt 1920 1080 | grep -Pio 'modeline\K.*' | xargs)xrandr: Failed to get size of gamma for output defaultawsgui@<ip>:~$ xrandr --addmode 'default''1920x1080_60.00'xrandr: Failed to get size of gamma for output defaultawsgui@<ip>:~$ xrandr -qxrandr: Failed to get size of gamma for output defaultScreen 0: minimum 640 x 480, current 1280 x 720, maximum 1920 x 1080default connected primary 1280x720+0+0 0mm x 0mm 1280x720 0.00* 1024x768 0.00 800x600 0.00 640x480 0.00 1280x768 0.00 1920x1080_60.00 59.96 awsgui@<ip>:~$ xrandr --output default --mode 1920x1080_60.00xrandr: Failed to get size of gamma for output defaultxrandr: Configure crtc 0 failedawsgui@<ip>:~$ inxi -GGraphics: Device-1: Amazon.com driver: N/A Display: x11 server: X.Org v: 1.21.1.7 with: Xwayland v: 23.2.0 driver: X: loaded: vesa unloaded: fbdev,modesetting dri: swrast gpu: N/A resolution: 1280x720 API: OpenGL v: 4.5 Mesa 23.2.1-1ubuntu3.1 renderer: llvmpipe (LLVM 15.0.7 256 bits)awsgui@<ip>:~$ xrandr --verbosexrandr: Failed to get size of gamma for output defaultScreen 0: minimum 640 x 480, current 1280 x 720, maximum 1920 x 1080default connected primary 1280x720+0+0 (0x51d) normal (normal) 0mm x 0mm Identifier: 0x51c Timestamp: 166059 Subpixel: unknown Clones: CRTC: 0 CRTCs: 0 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: _MUTTER_PRESENTATION_OUTPUT: 0 non-desktop: 0 supported: 0, 1 1280x720 (0x51d) 0.000MHz *current h: width 1280 start 0 end 0 total 1280 skew 0 clock 0.00KHz v: height 720 start 0 end 0 total 720 clock 0.00Hz 1024x768 (0x51e) 0.000MHz h: width 1024 start 0 end 0 total 1024 skew 0 clock 0.00KHz v: height 768 start 0 end 0 total 768 clock 0.00Hz 800x600 (0x51f) 0.000MHz h: width 800 start 0 end 0 total 800 skew 0 clock 0.00KHz v: height 600 start 0 end 0 total 600 clock 0.00Hz 640x480 (0x520) 0.000MHz h: width 640 start 0 end 0 total 640 skew 0 clock 0.00KHz v: height 480 start 0 end 0 total 480 clock 0.00Hz 1280x768 (0x521) 0.000MHz h: width 1280 start 0 end 0 total 1280 skew 0 clock 0.00KHz v: height 768 start 0 end 0 total 768 clock 0.00Hz 1920x1080_60.00 (0x52e) 173.000MHz -HSync +VSync h: width 1920 start 2048 end 2248 total 2576 skew 0 clock 67.16KHz v: height 1080 start 1083 end 1088 total 1120 clock 59.96Hzawsgui@<ip>:~$