So I ran apt-get dist-upgrade, and now my system do not start. I get past the boot menu. Then I see file system check stuff. Something like:
/dev/sda1: clean 34534/324344 files, 23445435/234435466 blocks
(Numbers are made up. Did not think the actual numbers were relevant)
This blinks on the screen for a couple of minutes until it stabalizes. I cannot do anything. I've tried pressing Ctrl+Alt+FX 1-12 but no response. Ctrl+Alt+Delete reboots.
It responds to ping and I can login via ssh.
I suspect it has something to do with the graphics drivers, since I have had problems with them in the past. It is a Nvidia card.
In /var/log/kern.log I have this at the end:
Nov 10 13:41:56 klutt kernel: [ 324.275907] nvidia-modeset: Freed GPU:0 (GPU-f5522274-0ae3-8a19-a228-47e2a3b8ac28) @ PCI:0000:01:00.0
Nov 10 13:41:57 klutt kernel: [ 325.164463] nvidia-modeset: Allocated GPU:0 (GPU-f5522274-0ae3-8a19-a228-47e2a3b8ac28) @ PCI:0000:01:00.0
Nov 10 13:41:57 klutt kernel: [ 325.521060] nvidia-modeset: Freed GPU:0 (GPU-f5522274-0ae3-8a19-a228-47e2a3b8ac28) @ PCI:0000:01:00.0
Nov 10 13:41:58 klutt kernel: [ 326.436102] nvidia-modeset: Allocated GPU:0 (GPU-f5522274-0ae3-8a19-a228-47e2a3b8ac28) @ PCI:0000:01:00.0
Nov 10 13:41:59 klutt kernel: [ 326.781826] nvidia-modeset: Freed GPU:0 (GPU-f5522274-0ae3-8a19-a228-47e2a3b8ac28) @ PCI:0000:01:00.0
Nov 10 13:42:00 klutt kernel: [ 327.679554] nvidia-modeset: Allocated GPU:0 (GPU-f5522274-0ae3-8a19-a228-47e2a3b8ac28) @ PCI:0000:01:00.0
Nov 10 13:42:00 klutt kernel: [ 328.044412] nvidia-modeset: Freed GPU:0 (GPU-f5522274-0ae3-8a19-a228-47e2a3b8ac28) @ PCI:0000:01:00.0
Nov 10 13:42:01 klutt kernel: [ 328.891106] nvidia-modeset: Allocated GPU:0 (GPU-f5522274-0ae3-8a19-a228-47e2a3b8ac28) @ PCI:0000:01:00.0
Nov 10 13:42:01 klutt kernel: [ 329.238838] nvidia-modeset: Freed GPU:0 (GPU-f5522274-0ae3-8a19-a228-47e2a3b8ac28) @ PCI:0000:01:00.0
but it goes on for 60 rows or so.
I tried adding GRUB_CMDLINE_LINUX_DEFAULT="nomodeset" to /etc/default/grub. This made the screen stop flickering, but I still do not get to Gnome login. I can still ssh.