Control: tags -1 + moreinfo
On Wed, 12 Nov 2025 at 21:38:29 -0600, Brent wrote:
gdm3 fails to start after upgrading. I get the black screen with a blinking
cursor in the top left corner.
We will need more information than this: the same upgrade has worked
successfully for others. Please check the systemd Journal for log
messages that occur during the failed startup.
Kernel: Linux 6.12.48251025 (SMP w/2 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_WARN, TAINT_OOT_MODULE,
TAINT_UNSIGNED_MODULE
This doesn't look like an official Debian kernel, so one possible cause
is if your (presumably locally-built) kernel doesn't support a required
feature.
Is that proprietary/out-of-tree module a version of the Nvidia
proprietary driver? If yes, what version?
/etc/gdm3/daemon.conf changed:
[daemon]
WaylandEnable=false
GNOME 49 only supports Wayland sessions. gdm3 can still launch X11
sessions as the session you log in to (tested with cinnamon), but the
gdm3 greeter (the login prompt) is now always a Wayland session, and so
is a GNOME login session.
smcv
