On Mon, Feb 28 2022, Felix Miata wrote: > There are two nouveau drivers: > > kernel device > display device > modesetting > nouveau > > Both possible full-function display device drivers depend on the nouveau > kernel > driver (module). inxi -Gayz will show both. Try switching from the one in > current > use to the other. Adding or purging xserver-xorg-video-nouveau is typically > the > simplest way to switch between them. /etc/X11/xorg.conf.d/ can also be used to > make the switch by explicitly declaring the chosen driver. The in-use display > driver is announced in roughly half the lines in each Xorg.#.log.
Interestingly, purging xserver-xorg-video-nouveau didn't change anything. However, removing modesetting_drv.so from /usr/lib/xorg/modules/drivers did. That solved the problem. But it didn't switch to nouveau; it went to fbdev. But, since I also want to boot this drive on other machines that need it, I can't just leave it that way. It also leaves open the question of why it worked fine in startx, or after logging in with sddm, which is darn weird to me. > Try disabling Plymouth, appending one of the following to the end of the linu > line > after striking the E key at the Grub menu: Thanks for the tip; no change there (I wasn't using the graphical stuff anyhow). > If none help, try appending your display's native mode & refresh instead, > e.g.: > > video=1920x1080@60 > > If this works, likely an edit to /etc/default/grub about graphics handling or > theme, and regeneration of /boot/grub/grub.cfg, is indicated. It's also already getting that right from EDID, so I'm pretty sure that's not the issue. Thanks again! John