In the end, I eliminated the freezing by replacing LightDM with GDM3. I still have no idea what the problem was with LightDM. I tested the RAM and put in a different HDD, but freezing was the same.
Apologies for the poor email threading. There seems to be no way to do it from a browser interface. On Thursday, March 27th, 2025 at 12:34 AM, W. Pepperdine <[email protected]> wrote: >> Here are outputs of a few queries on log entries >> from one of my XFCE installations. How do they compare >> with your logs? Can you see any reports on your >> computer that could point to what is causing your issue? > After a system freeze, I rebooted to the desktop as root and collected these > reports. Others looked at them but didn't see a cause for the freeze. > > /var/log/Xorg.0.log (http://paste.debian.net/1365570/) > /var/log/Xorg.0.log.old (http://paste.debian.net/1365571/) > /var/log/lightdm/lightdm.log (http://paste.debian.net/1365572/) > /var/log/lightdm/lightdm.log.old (http://paste.debian.net/1365573/) > dmesg (http://paste.debian.net/1365575/) > journalctl -b -p3 (http://paste.debian.net/1365578/) > > Any suggestion for what else to check? > > I have three theories for the problem. > > 1. It's hardware. The problem is that it's a new machine, checks with other > software seem OK, and the freezing occurs only during login/out. > > 2. It's LightDM. Since the freezing only happens around login/out, that seems > to point to the display manager, but would a frozen DM take out the USB ports? > 3. It's the kernel configuration. At the moment, that seems most likely to > me. I've been reading that the Lenovo machines can have some peculiar > interactions with kernel modules, so I'm now checking into that. > > On Tuesday, March 25th, 2025 at 6:51 PM, W. Pepperdine > <[email protected]> wrote: > >> Debian+XFCE freezes randomly either just before, during, or a couple seconds >> after the login screen. It happens about a third the time, both on booting >> and on changing users. During a freeze, the screen displays but is not >> updated and the USB ports appear inactive. There is no mouse or keyboard >> input, not even from SysRq. The only thing to do is a hard shutdown with the >> power button. >> >> I first installed Trixie and had this problem and others. Downgraded to >> Bookworm and have just this problem left. The machine is a ThinkCentre M920q >> with i5-9600T, 8GB RAM, and UHD Graphics 630. >> >> Have already had some discussion of log output on Debian User Forums. >> >> Computer freezing because of >> LightDM?https://forums.debian.net/viewtopic.php?t=162147
