Comment 6 for bug 1917194

Hi Ariel, thanks for your report! So, let me clarify: now your system is freezing on boot, you don't need to run "lspci" to observe the freeze anymore?
Can you try adding "ignore_loglevel" in the kernel command-line on Grub, and observe the boot progressing? If so, then please take a screenshot/photo when it freezes, so we can see the last messages observed.

If machine is booting fine with the USB stick, can you perform such boot and try lspci from the live Ubuntu image? If lspci is a reproducer, it is worth to collect a dmesg while the problem happens, so we can investigate if any message pops during the event.
Thanks,

Guilherme