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Hello everybody out there using Ubuntu,

Booting Ubuntu 18.04 on a ThinkPad X230t (with Coreboot BIOS) used to work fine, but now it stops with the message

[  OK  ] Started GNOME Display Manager.
[  OK  ] Created slice User Slice of user.
[      ] Started User Manager for UID 1000...
[  OK  ] Started Session 1 of user user.
[  OK  ] Started User Manager for UID 1000.

Related issues have been reported on

Among the recommended solutions were to check for free disk space (there is plenty of it in my case), as well as uncommenting the line

WaylandEnable=false

in /etc/gdm3/custom.conf, which didn't fix the issue.

I assumed it could be a problem with GNOME Display Manager (gdm3) and ran

systemctl restart gdm

after having booted into recovery mode. Indeed, I only get a black screen after running this command.

Therefore, I installed lightdm as a replacement for gdm3 hoping it would fix the issue.
lightdm seems to try to start some graphical environment, but still fails: I see a black screen.

There is a message in /var/log/kern.log

EDD information not available.

but I'm not sure whether this is a problem.

Does anyone know which additional diagnostics I could run to pin down the problem?

I should mention that I can boot into recovery mode perfectly fine (even with graphics enabled).

When checking the graphics driver in recovery mode, llvmpipe (LLVM 10.0.0, 256 bits) is indicated, which could be part of the problem: ThinkPad X230 actually has an i7 processor with onboard Intel HD Graphics.
Therefore, I would assume the package xserver-xorg-video-intel to be already installed by default, but

sudo apt install xserver-xorg-video-intel

gives me

The following packages have unmet dependencies:
 xserver-xorg-video-intel : Depends: xorg-video-abi-23
                            Depends: xserver-xorg-core
E: Unable to correct problems, you have held broken packages.

Installing xserver-xorg-core and xserver-xorg brought me closer to a solution:
I could boot an older kernel to X and now get Intel HD Graphics 4000 (IVB GT2) as graphics.

NicolasBourbaki
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  • How did you check the available disk space? What does plenty mean? – David Sep 26 '22 at 11:54
  • Dear David, running df -h shows me more than 3 TB free space for /dev/sda2. – NicolasBourbaki Sep 26 '22 at 12:03
  • gparted will give more info on partitions I think. – David Sep 26 '22 at 12:05
  • Thanks again. gparted indicates /dev/sda1 as the partition on which grub is located. I guess this should be the normal configuration. A bit strange is the size of 1.00 MiB indicated by gparted for this partition: I think it should actually be larger. – NicolasBourbaki Sep 26 '22 at 12:40

0 Answers0