Two weeks ago,
I was on the kernel
a routine update installed
4.13.0-38 automatically. After that, I was unsuccessful in getting my laptop to boot beyond the login screen (this is a documented bug affecting several users).
I fixed (temporarily solved) it by removing
-37, -38, and
apt-mark holding -36. I continued to boot in
-36 without any issues for about two weeks now.
I used my laptop as usual last night and then eventually shut it down. I believe I ran some routine updates through
apt. Today morning I was unable to boot past the login screen.
grub pops up by default. Then I choose the top option, which is
-36. It runs through the boot process, asking me to unlock cryptswap. I do that. It finishes up, shows the login screen. Irrespective of whether or not I interact with it (e.g., moving the cursor around, typing my password really quick, or even booting into
tty2 or any other
tty), it freezes in the next 6 seconds or so.
My current suspicion is that the problem must be caused by some recent package that was updated, or something to do with the kernels. Whatever it is, is crashing at login while trying to launch GUI. If I understand correctly, it is likely to be some process that occurs at startup.
Things I have tried without much luck
nomodesetoption: no luck with
-37, -38, but
-36boots. Can't suspend.
-36recovery boot, and then trying to dpkg repair packages
apt upgrade(according to this answer)
-37, -38because apparently "a fix was committed" at the same link to the bug above. (tried
nomodesetwith all these kernels, too, didn't work)
- switching to another
tty: doesn't work because machine freezes irrespective of what you do within 5-6 seconds
Logs and info
I'm just trying to provide down here anything I think is relevant. If you believe something else might help, please let me know and I'll be happy to upload it.
- DMESG output through
chrootsession (link redacted)
- Auth log for one such failed boot (link redacted)
dpkglog from the last successful graphical session (yesterday) (1. all: link redacted; 2. only recently installed, filtered using
grep "install": link redacted)
syslogfrom one such failed boot (link redacted)
- Basic information about hardware using