so install it again, reboot and unplug your external monitor, and check with laptops monitor
Now it boots again but the laptop screen resolution is still wrong. The external screen was not plugged in during boot. If I connect it afterwards, it works correctly as before but the laptop screen is still wrong.
so if you unplug your external monitor, your laptop dont work? or it works but with wrong resolution?
So I now tried two different settings:
-
I start the laptop with the external screen not plugged in. The laptop boots “correctly”, the lock screen has the correct resolution (1920x1080) but once I log in it changes to an incorrect resolution. The 1920x1080 resolution is not listed in the system setting, only 960x540, 864x486, and 640x480.
-
I start the laptop with the external screen plugged in. The outcome is the same as for the first case.
If I unplug the external screen while the system is running, nothing spectacular happens and I can continue using the laptop screen with the wrong resolution.
ok, unplug your monitor, use only your laptop, go to system settings, compositor, uncheck enable on startup, click apply, reboot and check
Unfortunately that did not change anything. Still the same incorrect resolution.
so you can enable it again in system settings … go to /etc/x11 and check what .conf files you have there … also run this command: xrandr
Here the content of /etc/X11/:
/etc/X11:
total 24
drwxr-xr-x 2 root root 4096 May 8 19:21 mhwd.d
drwxr-xr-x 3 root root 4096 Nov 5 2020 xinit
-rw-r--r-- 1 root root 1318 May 8 13:09 xorg.conf
-rw-r--r-- 1 root root 1311 May 8 13:09 xorg.conf.backup
drwxr-xr-x 2 root root 4096 May 8 19:21 xorg.conf.d
-rw-r--r-- 1 root root 0 May 8 13:08 xorg.conf.nvidia-xconfig-original
/etc/X11/mhwd.d:
total 4
-rw-r--r-- 1 root root 581 May 8 19:21 intel.conf
/etc/X11/xinit:
total 12
-rw-r--r-- 1 root root 739 Oct 10 2020 xinitrc
drwxr-xr-x 2 root root 4096 Apr 24 17:59 xinitrc.d
-rw-r--r-- 1 root root 45 Oct 10 2020 xserverrc
/etc/X11/xinit/xinitrc.d:
total 16
-rwxr-xr-x 1 root root 318 Apr 1 21:02 40-libcanberra-gtk-module.sh
-rwxr-xr-x 1 root root 538 Mar 17 23:40 50-systemd-user.sh
-rwxr-xr-x 1 root root 243 Jan 15 22:01 80xapp-gtk3-module.sh
-rwxr-xr-x 1 root root 435 Feb 4 01:40 90xbrlapi
/etc/X11/xorg.conf.d:
total 8
-rw-r--r-- 1 root root 380 Dec 31 2020 00-keyboard.conf
-rw-r--r-- 1 root root 1 May 8 15:15 10-nvidia-drm-outputclass.conf
lrwxrwxrwx 1 root root 26 May 8 19:21 90-mhwd.conf -> /etc/X11/mhwd.d/intel.conf
and the output of xrandr:
Screen 0: minimum 8 x 8, current 2880 x 1080, maximum 32767 x 32767
LVDS1 connected primary 960x540+0+0 (normal left inverted right x axis y axis) 340mm x 190mm
960x540 59.82*
864x486 60.00 59.92 59.57
640x480 59.94
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected 1920x1080+960+0 (normal left inverted right x axis y axis) 1600mm x 900mm
1920x1080 50.00*+ 60.00 59.94 30.00 25.00 24.00 29.97 23.98
1920x1080i 60.00 50.00 59.94
1280x1024 75.02 60.02
1280x720 60.00 50.00 59.94
1024x768 75.03 70.07 60.00
800x600 72.19 75.00 60.32 56.25
720x576 50.00
720x576i 50.00
720x480 60.00 59.94
720x480i 60.00 59.94
640x480 75.00 72.81 60.00 59.94
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
The external screen was connected when I generated the output.
try renaming xorg.conf file to xorg_bak.conf so it doesn’t load, reboot and check… xrandr doesnt even detect your resolution…
Perfect this did the job! Thank you very much for your help, you made my day 
Now everything works again as it should.
youre welcome … and enable again the compositor at startup
Thanks already activated it again.
This topic was automatically closed 2 days after the last reply. New replies are no longer allowed.