In my efforts to configure Mint 18.2 I’ve managed to break my display manager… :-[
I changed from mdm to lightdm using a ‘how to’ from the official Mint site and all seemed to go well until it came to reboot. The boot now just hangs at the splash screen. I can see a screen full of output (by hitting ‘enter’) and that reports an error ‘failure to start light display manager’. It then runs on for a few more lines then halts, waiting for ‘another process’. Unfortunately, the ‘how to’ said to remove mdm as part of the changeover so there’s no way to switch back to it.
I have the Mint 18.1 install disk (original install was 18.1 - upgraded to 18.2 via Update Manager) and also Mint 17.3 installed on a separate Hdd (sda) - M18 is on Hdd sdb.
Is it possible to re-install mdm on to M18 from either of these mediums? I could just reinstall M18 afresh but have made a lot of changes that I would prefer to keep if possible.
Hi Mark - I can only get to a console via ‘Advanced Options’.( Hitting Ctrl+Alt+F3 in Mint 18.2 drops me to a grub screen where ‘sudo service lightdm restart’ isn’t recognised). In ‘advanced …’ I can get to a console and log in as root then run the command and get errors ‘…failure to start light display manager…’. I think that lightdm didn’t install properly (if at all) and removing mdm has left me with no display manager at all.
Trying to boot M18 and hitting Esc brings up a screenfull of messages - at the end it states ‘Failed to start Light Display Manager’ - See systemctl status lightdm.service for details, but I don’t know how to get to this, then last line is 'A start job is running for Hold unt…finishes up (timer running/no limit)
Mark that’s brilliant! All up and running Thanks very much - I’ll set this as solved shortly.
Just a couple of points.
The installer also listed lightdm as available. Given that there is a possibility for future conflict, I’d rather remove it altogether. What’s the best way?
And, looking at the output from fdisk -l, the boot files in M18 are in a different location to those in M17, yet I deliberately set things up on sdb in exactly the same way as I’d done on sda due to previous issues with Grub finding the files. Does this matter? And would it cause further issues if they were moved from sdb5 to sdb1?