Hi Forum,
I’m trying to install Qubes 4.2.1 on my Thinkpad P1 Gen3 - its exactly this model but with 64 GB RAM.
I am sure that it can run qubes as I did install it before. Last time I installed it it was 4.0 I think, and I had to add some boot parameters to make it work, which I intelligently did not write down 
I have tried installing 4.2.1 and 4.2.0 and get the same result for both. I tried 4.1 just for the fun of it, which says it cant find the kernel to boot. But thats deprecated anyways.
When booting 4.2.1 (or 4.2.0) I selected the:
- boot with verify: goes to black screen (does not turn screen off, just black)
- boot without verify: goes to black screen (same)
- boot in debug mode: hangs at about starting systemd-journald, or sometimes systemd-somtething-with-tmpfiles, or at uploading xen processor PM info
- boot latest kernel: I edited the boot params here to remove the “quiet”, which then hangs at the same as the debug boot
I did very extensive checking in the BIOS and tried both hybrid as well as discrete graphics, both had no effect. I also tried everything else that makes sense, and I’m reasonably sure I didn’t miss anything that could be related.
I followed this Installation troubleshooting | Qubes OS and added
nouveau.modeset=0 rd.driver.blacklist=nouveau video=vesa:off
which didn’t help. I also tried
noexitboot=1 modprobe.blacklist=nouveau rd.driver.blacklist=nouveau --- intitrd.img
and
nomodeset ip=dhcp inst.nokill inst.vnc
(from Nvidia Troubleshooting Guide)
which also didn’t help. When the screen goes black, pressing CRTL + ALT + F1-12 doesnt do anything.
Its all a bit weird. Hope you guys have some ideas.