Hello guys, I am using Debian 12 with GNOME DE on wayland. I am not able to connect to external monitor via hdmi port ?
Usually the option to share the screen comes in the gnome settings but now its now being shown..
edit 1: sudo journalctl --dmesg --follow I tried this command and found out that the system is not even detecting the external monitor connected through HDMI
edit 2: output of grep -s . /sys/class/drm/card*/card*/*
arto@dell:~$ xrandr
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 16384 x 16384
eDP-1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 293mm x 165mm
1366x768 60.00*+ 40.00
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
960x540 59.96 59.99 59.63 59.82
800x600 60.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
700x525 59.98
800x450 59.95 59.82
640x512 60.02
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
640x400 59.88 59.98
640x360 59.86 59.83 59.84 59.32
512x384 60.00
512x288 60.00 59.92
480x270 59.63 59.82
400x300 60.32 56.34
432x243 59.92 59.57
320x240 60.05
360x202 59.51 59.13
320x180 59.84 59.32
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)
arto@dell:~$
Post the output in code tags, which you nicely alreayd used. Probabley lot of is same, but I'd use xrandr instead of Gnome settings, so you could see possible errors, and paste them here. man xrandr tells more, there is no sense for me to copy it.
Screen 0: minimum 16 x 16, current 1920 x 1080, maximum 32767 x 32767
eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 340mm x 190mm
1920x1080 143.88*+
1440x1080 143.80
1400x1050 143.89
1280x1024 143.79
1280x960 143.86
1152x864 143.92
1024x768 143.87
800x600 143.83
640x480 143.85
320x240 142.05
1680x1050 143.88
1440x900 143.86
1280x800 143.84
1152x720 143.77
960x600 143.72
928x580 143.50
800x500 143.68
768x480 143.69
720x480 143.85
640x400 143.37
320x200 141.40
1600x900 143.93
1368x768 143.77
1280x720 143.67
1024x576 143.91
864x486 143.63
720x400 143.88
640x350 143.57
this is the output. The display is not getting detected.. I don't know what exactly is the problem.
1.There is no problem with the external monitor or the HDMI cable. since it works perfectly fine with my desktop CPU
I have written this several times, but at least one time more
My wife bought a new monitor, plugged via HDMI to the that, booted some 30 times, monitor did not even blink any leds. She gave up, bought another from different manufacturer, that worked. I asked her to give her previous 'not working' monitor to me, connected with display port cable, and has not failed ever.
Here have been also reports from others of problems with HDMI.
HDMI is fickle, especially with borderline cables and adapters.
Sometimes I just have to try a few different ones until I find a combination that works reliably, without sporadic blanking or even complete disappearance of the image.
Is the problem exclusive to Gnome on Wayland? IOW, is failure equivalent if using X11 session instead of Wayland? Is result the same using IceWM or other WM or DE instead of Gnome? Gnome on Wayland logs to the systemd journal, so use journalctl to find error messages and other logged clues. When using neither Gnome nor Wayland, logging may be found in file Xorg.0.log found either in /var/log/ or in ~/.local/share/xorg/. More information might be useful to helping us help you. e.g.
