I’ve got Qubes OS 4.3 on ThinkPad P16 Gen 2 with NVidia RTX 1000 Ada GPU.
I’m having hard time to make additional monitor to work.
Laptop has one HDMI port in the back and to my understanding it’s attached to the the NVidia GPU, while screen of the laptop itself is being displayed using Intel CPU with integrated graphics.
Any time I plug or unplug the monitor, Display settings window pop up (twice), however it does not show any additional monitors to set, except laptop screen itself. Only option it shows is Laptop.
I’ve tried to switch Graphic Device mode in BIOS from Hybrid to Decrete. This freezes up loading and Qubes OS does not start at all. My BIOS does not show Optimus mode that being mentioned in some posts.
Reading some posts here in the forum, I was able to install drivers to vm sys-gpu. I created standalone sys-gpu, disabled NVIDIA pci devices (vga + audio) in dom0 and attached them to vm sys-gpu. If monitor attached and I start sys-gpu, the monitor shows black screen with caret pointer and I’m unable to use anything related to the sys-gpu (terminal to be specific). If monitor is not attached, I am able to use terminal in sys-gpu on the laptop screen.
I’ve also got USB-C to HDMI adapter and when I try to use it, it behaves same way as if I just plugged cable directly to the HDMI port.
I installed fresh Debian 13 on secondary drive of the same laptop and the monitor detected and usable out of the box.
Please advice what else I can look into to be able to use additional monitor. I only need it to display things, no need to use any heavy GPU related tasks.