Laptop monitor not working but external one does

Support Graphics & Display
61

There was no plasmashell running. After kstart5 plasmashell, it says “Aborted (core dumped)”

62

but you can login to a graphical system again ?

63

I can only if i change i915.modeset=0 to i915.modeset=1. If i run the command you’ve typed and switch back no I can’t.

64

okay i had to get an impression what’s going on. not that simple if you’re not sitting straight at the computer.

65

Okay. no problem

66 
xrandr | grep -w connected
67

Can’t open display. I guess it returns that because of terminal (TTY2)

68

change back to modeset=1, reboot into graphical and

xrandr | grep -w connected
69 
eDP-1 connected 1920x1080+145+60 (normal left inverted right x axis y axis) 500mm x 281mm
HDMI-1 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm

Just a note.

GRUB_CMDLINE_LINUX_DEFAULT="i915.modeset=1 video=eDP-1:e drm.edid_firmware=eDP-1:edid/1920x1080.bin udev.log_priority=3"
70

if you open the system-setting, is the laptop-screen avaiable ?

dualmonitor
dualmonitor1920×617 71.7 KB

71

Screenshot_20220720_152252
Screenshot_20220720_1522521920×600 56.6 KB

72

Even with AnyDesk i can see & control both desktops. But still black screen on laptop.

73

well but that’s a new situation now. on one hand it shows that both displays are running and to the other hand it’s a problem that the laptop display does not display what it should.

74 
ls /sys/class/backlight/
cat /sys/class/backlight/intel_backlight/max_brightness
cat /sys/class/backlight/intel_backlight/brightness
cat /sys/class/backlight/intel_backlight/actual_brightness
75 
[dc2@manjaro ~]$ ls /sys/class/backlight/
intel_backlight
[dc2@manjaro ~]$ cat /sys/class/backlight/intel_backlight/max_brightness 
60
[dc2@manjaro ~]$ cat /sys/class/backlight/intel_backlight/brightness 
3
[dc2@manjaro ~]$ cat /sys/class/backlight/intel_backlight/actual_brightness 
3
76 
echo 60 > /sys/class/backlight/intel_backlight/brightness
echo 60 > /sys/class/backlight/intel_backlight/actual_brightness

any effect ?

77

No. No effect. I’ve tried that.

78 
ls /sys/class/backlight/
cat /sys/class/backlight/intel_backlight/max_brightness
cat /sys/class/backlight/intel_backlight/brightness
cat /sys/class/backlight/intel_backlight/actual_brightness

what are the settings actual ?

79

60 for all of them. @Olli I’ve a little work to done. I’ll continue tomorrow morning to install the windows and get EDID from there and put it the back to the manjaro.

I’ll keep this thread updated. Thank you for your time. If anything comes to your mind feel free to type it.

80

you could also try the latest 5.19 kernel