I have an MSI GP72 Laptop. I upgraded from 17.10 → 18.04 LTS a few hours ago today. The upgrade process itself went well. (Unlike this question, I'm using the final official release.)
However, while I can boot the system, I can only get a terminal. The GUI is nowhere to be seen.
What I need is help in:
- finding what/where the error is, and
- fixing it so that I can get the GUI back
Any and all help is appreciated.
I've been unable to find explicit error reports. Here're a few of the places I've already checked:
boot.log entries show
[OK]s for the services, including
[OK] Started Login Service.. Interestingly, the
lightdm entry shows up as follows
... [OK] Started LSB: GNOME Display Manager. [OK] Started Permit User Sessions. [OK] Started Disk Manager. Starting Network Manager Script Dispatcher Service... Starting Hold until boot process finishes up... Starting Light Display Manager... ... [OK] Started Network Manager Script Dispatcher Service. ...
Checking the status of
lightdm.service shows the following (I've omitted date stamps with
<date> to avoid clutter):
$ systemctl status lightdm.service lightdm.service - LSB: Start lightdm Loaded: loaded (/etc/init.d/lightdm; generated) Active: active (exited) since <date>; 1h 2min ago Docs: man:systemd-sysv-generator(8) Process: 3251 ExecStop=/etc/init.d/lightdm stop (code=exited, status=0/SUCCESS) Process: 3327 ExecStart=/etc/init.d/lightdm start (code=exited, status=0/SUCCESS) <date> msi-hive systemd: Starting LSB: Start lightdm... <date> msi-hive systemd: Started LSB: Start lightdm.
So, for whatever reason the service seems to exit after getting launched and its exit code is "successful".
systemctl start lightdm.service command simply returns to the terminal and shows nothing (i.e. no output, errors, etc). Changing to other terminals using the Ctrl + Alt + F1-F8 keys doesn't show a working GUI elsewhere either.
Please note the meta announcement stating that Ubuntu Bionic Beaver 18.04 LTS is now released, and posts about it are (generally) No Longer Offtopic.