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I got an updated driver through the software updater, but when I rebooted I suddenly couldn't login to my system anymore. I used Ctrl + Alt + F1 to try and purge my nvidia drivers, but I got the following message:

Job for var-lib-snapd-lib-gl.mount failed. See "systemctl status var-lib-snapd-lib-gl.mount" and "journalctl -xe" for details.

I used journalctl -xe and found the following error:

jun 04 00:26:17 Unity-X550JF systemd[1]: Failed unmounting Mount unit for nvidia support in snappy.

So long story short: The updated driver borked my system and I can't uninstall it in order to try to fix it. This leaves with a broken system where I can't login and attempting to login just throws me back to the login screen..

Does someone know what I can do this fix this? I can't use this now I really really need to get work done.

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  • MAy i point you to the solution I provided here. This all seems to come from a patch which hit upstream to soon and got packaged and pushed. – Videonauth Jun 6 '16 at 13:21
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I just had the same problem after upgrading. Waiting for response. I'm nearly used to that the system will go down every time after upgrading...

I temporarily solved it by stopping lightdm and reinstalling NVIDIA driver:

systemctl stop lightdm.service

purge nvidia (I have nvidia-364 installed)

install nvidia-367

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