I have a desktop PC with a HDMI monitor connected to a nvidia GeForce GT 1030 and a second VGA monitor connected to an integrated Intel UHD Graphics 630.
Both monitors have worked smoothly for years with Ubuntu 18.04
I recently installed Lubuntu 22.04 on the same PC and both monitors were automatically activated without problems.
But now, in Debian 11 (with LXQt desktop) the HDMI monitor is the only one that turns on. The VGA monitor only displays text at boot and then goes in to sleep mode.
On Debian lspci says everything is allright:
root@debian:/home/cesar# lspci -k | grep -EA3 'VGA|3D|Display' 00:02.0 Display controller: Intel Corporation CometLake-S GT2 [UHD Graphics 630] DeviceName: Onboard - Video Subsystem: Gigabyte Technology Co., Ltd UHD Graphics 630 (Desktop) Kernel driver in use: i915 -- 01:00.0 VGA compatible controller: NVIDIA Corporation GP108 [GeForce GT 1030] (rev a1) Subsystem: Gigabyte Technology Co., Ltd GP108 [GeForce GT 1030] Kernel driver in use: nvidia Kernel modules: nvidia
And for xrandr there's no error message either, but the Intel integrated graphics card simply doesn't exist:
root@debian:/home/cesar# xrandr Screen 0: minimum 8 x 8, current 1366 x 768, maximum 32767 x 32767 DVI-D-0 disconnected (normal left inverted right x axis y axis) HDMI-0 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 410mm x 230mm 1366x768 59.79*+ 1280x720 60.00 59.94 50.00 1024x768 75.03 60.00 800x600 75.00 60.32 56.25 720x576 50.00 720x480 59.94 640x480 75.00 59.94 59.93
Please give me some suggestions on where to keep looking. I've tried several proposals, but none has worked so far