Solus runs on my notebook with a monitor connected via HDMI/DP (Displayport monitor through DP->HDMI Adapter). The monitor is detected at startup and works fine but after resuming from sleep only the notebook built-in display works. The monitor also doesn't appear in the display settings any more until I restart Solus.
The machine has dual graphics, Intel HD Graphics 630 and discrete NVidia M2200. With the proprietary NVidia driver the monitor works normal after resume, therefore I believe the i915 driver is the problem.
I already uninstalled the NVidia proprietary driver through DoFlicky and disabled the nouveau driver (nouveau.modeset=0) so the NVidia card should not be the problem.
System is Solus Budgie 4.0 (5.1.14-121.current kernel)
Do you have any idea how to resolve this?
Edit 2019-07-02: Tried with a different monitor model and different cable without any adapters but the issue persists.
When Monitor is working, e.g. after reboot (eDP1 is the built-in notebook display, DP2-1 is the monitor and primary display)
xrandr --query
Screen 0: minimum 8 x 8, current 3840 x 1479, maximum 32767 x 32767
eDP1 connected 1920x1080+0+399 (normal left inverted right x axis y axis) 340mm x 190mm
1920x1080 60.02+ 59.93
1680x1050 59.88
1400x1050 59.98
1600x900 60.00 59.95 59.82
1280x1024 60.02
1400x900 59.96 59.88
1280x960 60.00
1368x768 60.00 59.88 59.85
1280x800 59.81 59.91
1280x720 59.86 60.00 59.74
1024x768 60.00
1024x576 60.00 59.90 59.82
960x540 60.00 59.63 59.82
800x600 60.32 56.25
864x486 60.00 59.92 59.57
640x480 59.94
720x405 59.51 60.00 58.99
640x360 59.84 59.32 60.00
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP2-1 connected primary 1920x1200+1920+0 (normal left inverted right x axis y axis) 520mm x 320mm
1920x1200 59.95+
1920x1080 60.00
1600x1200 60.00
1680x1050 59.88
1600x900 60.00
1280x1024 60.02
1440x900 59.90
1280x800 59.91
1280x720 60.00
1024x768 60.00
800x600 60.32
640x480 59.94
DP2-2 disconnected (normal left inverted right x axis y axis)
DP2-3 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
After resuming from sleep:
xrandr --query
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 340mm x 190mm
1920x1080 60.02*+ 59.93
1680x1050 59.88
1400x1050 59.98
1600x900 60.00 59.95 59.82
1280x1024 60.02
1400x900 59.96 59.88
1280x960 60.00
1368x768 60.00 59.88 59.85
1280x800 59.81 59.91
1280x720 59.86 60.00 59.74
1024x768 60.00
1024x576 60.00 59.90 59.82
960x540 60.00 59.63 59.82
800x600 60.32 56.25
864x486 60.00 59.92 59.57
640x480 59.94
720x405 59.51 60.00 58.99
640x360 59.84 59.32 60.00
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP2-1 disconnected (normal left inverted right x axis y axis)
DP2-2 disconnected (normal left inverted right x axis y axis)
DP2-3 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
