I ran into the same problems… looking around there was a suggestion to add “nouveau.modeset=0” to the grub to fix this. This is how my entry in the grub looks like:
GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash acpi_os_name=Linux acpi_osi=! acpi_osi=Linux acpi_backlight=vendor modprobe.blacklist=nouveau nouveau.modeset=0”
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