On Sun, Jul 12, 2020 at 10:45:09AM -0400, David Bridgham wrote: > Andrei POPESCU <andreimpope...@gmail.com > <mailto:andreimpopescu%40gmail.com>> wrote: > > > Check your Xorg.0.log, it should tell you what driver it is loading and > > might hint at why it's not using nouveau. > > > Found something very odd when trying to do this. When I boot the older > kernel, the one that works, Xorg doesn't appear to write the log file. > The log file contains the kernel version number and it's never the older > one. I'd meant to compare the two to see where they differ.
Check the time stamp on the Xorg.0.log file. You are probably reading the wrong one. Since Debian 9, there are *two* possible locations for the Xorg.0.log file: /var/log/ (if X was executed with root privileges) ~/.local/share/xorg/ (if X was executed without root privs) Before Debian 9, X was always run with root privileges, through the use of a setuid wrapper. Nowadays, that is not typically the case, but it still *can* be in certain setups. So it behooves you to check both places.
