I did a fresh install of Lubuntu 20.04, I had to use "graphic safe mode". My monitor is showing the boot screen / BIOS. If I add nomodeset to GRUB, it works with 800x600 resolution. It's a touchscreen with built in PC from RC Stars.
I installed TeamViewer when using "nomodeset". The monitor is completely black but I can reach the computer through TeamViewer.
Answers for this questions I've found after a day of googling doesn't help and the answers is quite similar.
sudo lspci -v
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09) (prog-if 00 [VGA controller]) DeviceName: Onboard IGD Subsystem: Intel Corporation HD Graphics 5500 Flags: bus master, fast devsel, latency 0, IRQ 45 Memory at f6000000 (64-bit, non-prefetchable) [size=16M] Memory at e0000000 (64-bit, prefetchable) [size=256M] I/O ports at f000 [size=64] Expansion ROM at 000c0000 [virtual] [disabled] [size=128K] Capabilities:  MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [a4] PCI Advanced Features Kernel driver in use: i915 Kernel modules: i915
Screen 0: minimum 8 x 8, current 1024 x 768, maximum 32767 x 32767 eDP1 connected primary 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.00*+ 1024x576 59.90 59.82 960x540 59.63 59.82 800x600 60.32 56.25 864x486 59.92 59.57 640x480 59.94 720x405 59.51 58.99 640x360 59.84 59.32 512x384 60.00 DP1 disconnected (normal left inverted right x axis y axis) HDMI1 disconnected (normal left inverted right x axis y axis)
xrandr --output HDMI1 --auto --right-of eDP1
Doesn't do anything
5.8.0-45-generic #51~20.04.1-Ubuntu SMP Tue Feb 23 13:46:31 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
sudo xrandr --addmode HDMI1 1920x1080
xrandr: cannot find mode "1920x1080"
How do I troubleshoot to find out the problem? Windows installation works, but none of the Ubuntu distros/versions I've tried has worked