External Monitor and Mouse&Keyboard issues on Qubes 4.2

General Discussion
1

Hey there,

I use a System76 with AMD Ryzen 7 with Qubes 4.1.2. I use them with no issues.
Lately, I had to pump a little bit the resources so I ordered a Tuxedo system with 64GB RAM, Intel Core i9-13900HX and NVIDIA GeForce RTX 4060 8GB (I don’t care about this one because I don’t use its resources).
After installing the Qubes 4.2 on the new system, I have the following problems:

  • I can’t use the external monitor (which I use on System76 with Qubes 4.1.2). I set from BIOS to use only Intel GPU and it’s still not working. Shall I try to install a separate driver for Nvidia and set it also in BIOS or?
  • I can’t use the keyboard and mouse. I can’t write when Disk password is requested, I can’t write when login password is requested. After logging in, I can use only the mouse after I allow it, but the keyboard is still not working. The same Keyboard and Mouse with the same USB dongle I use on System76 with Q4.1.2 and work.

Out of curiosity, I installed Q4.1.2 and the Keyboard&Mouse problem disappeared which makes me think there is a problem on Q4.2 in handling the USB dongle.
The 2 policies for Mouse and Keyboard are fine:

cat /etc/qubes-rpc/policy/qubes.InputKeyboard
sys-usb dom0 allow
$anyvm $anyvm deny

cat /etc/qubes-rpc/policy/qubes.InputMouse
sys-usb dom0 allow,user=root
$anyvm $anyvm deny

Though, the problem with the monitor(s) still persists in Q4.1.2 as well.

Is there anything that I can try?

2

Ive just realised that after login, only the mouse works, I get the Allow message only for the mouse. The keyboard is not working and I don’t get any pop up to allow it.

3

I have same problem on my old laptop. HCL - ASUS TUF Gaming A17 FA707RC . I not solved it, but maybe you can. How i understand hdmi connected to nvidia card, and still not working while you don’t use external gpu. I install nvidia drivers and create custom xorg file, then my external display start working.

I have same problem too. To fix it on install i choose set sys-net and sys-usb as one qube, and delete flag “makes it disposable”

I hope it helps. Luck for you

4

Ok… so in my case should be the Nvidia GPU which needs the proper and correct driver and not the generic one (nouveau),
The thing is that why do I need the Nvidia driver if the Intel GPU is used? Why the video ports (DP, HDMI) are not working directly with Intel GPU which I strongly believe Qubes OS 4.2.0 has support for.
Did anyone install Nvidia driver recently and can provide me some guidance?

Thank you.