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Old 03-26-2020, 04:21 AM   #1
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Second monitor is not detected

I'm using laptop, HP pavilion, and when i want to connect second monitor, he's not detected by Debian 10.
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
XWAYLAND0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 340mm x 190mm
1920x1080 59.96*+
Old 03-26-2020, 08:52 AM   #2
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Welcome to LQ, Lin1725.

You need to reboot or log out of X for the monitor to be recognised. You may need to write a configuration file if you want it doing particular things. Welcome to the wonderful world of Linux!
Old 03-26-2020, 05:44 PM   #3
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After connecting and turning on the external, try one of these three key sequences:
  • Ctrl-Alt-F3, Ctrl-Alt-F7
  • Ctrl-Alt-F2, Ctrl-Alt-F1
  • Ctrl-Alt-F4, Ctrl-Alt-F8
The second of each should return to the desktop, which usually is F7, but could be on F1 or F8, depending on DE, DM and configuration. The first of each could be any of F1-F6, the normal location of vttys available for login.

Something else to try is running in an Xorg session instead of a Wayland session, which should be selectable from your GUI login screen.
Old 03-26-2020, 06:25 PM   #4
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From the search I did, it seems that you are not alone with this issue. One person posted that running the 'X' command from the terminal got the second monitor detected.
Looks like you need to login to a consul session (Ctrl+Alt+F1) then login and run X. May have to kill your login manager first.


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