unity 8 login stalls

[Nathan Russell]

Contrary to other login problems with Unity 8 (as installed by default in Ubuntu 16.10), I'm not getting a black screen when trying to log in. After entering my password the login screen just sort of hangs; I'm left with the login GUI (which is frozen) and the top panel (which I can use) to display the suspend / restart options. I left it running for quite a while, but nothing happened. I can log in to the default environment easily.

I'm running a System 76 Meerkat, having upgraded from Ubuntu 16.04 without wiping my system drive.
---
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.10
InstallationDate: Installed on 2016-10-01 (18 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
Package: unity8 8.14+16.10.20160922-0ubuntu2
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 4.8.0-22.24-generic 4.8.0
Tags: third-party-packages yakkety
Uname: Linux 4.8.0-22-generic x86_64
UpgradeStatus: Upgraded to yakkety on 2016-10-13 (6 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Hi,

We'd like to get to the bottom of this problem. Can you please attach these:
   /var/log/lightdm/unity-system-compositor.log
   ~/.cache/upstart/unity8.log

And also please let us know more information about your system. You can do this automatically by running this command:
   apport-collect 1633390

[Nathan Russell (nthnrssllnsr)]

Hi Daniel,

Sorry about the wait. I've only just seen your message.

I hope to have the information for you tonight.

Kind regards,
Nathan

[Nathan Russell (nthnrssllnsr)]

apport information

[Nathan Russell (nthnrssllnsr)]

apport information

[Nathan Russell (nthnrssllnsr)]

apport information

[Nathan Russell (nthnrssllnsr)]

Here you go, this should be everything you asked for.

If there's any other way I can help, let me know.

I also ran the command you asked, so hopefully everything's in order.

Regards,
Nathan

[Daniel van Vugt (vanvugt)]

Thanks, but the required info is still missing.

The critical file from 15 October unity-system-compositor.log is zero bytes, and your unity8 logs have not been touched since 5 October. So it sounds like unity-system-compositor.log will hold the answer. Please try copying it again as root (sudo).

-rw-r----- nthnrssllnsr/nthnrssllnsr 14272 2016-10-02 17:38 bug/unity8.log.4.gz
-rw-r----- nthnrssllnsr/nthnrssllnsr 1843 2016-10-05 22:45 bug/unity8-dash.log.2.gz
-rw-r----- nthnrssllnsr/nthnrssllnsr 25256 2016-10-02 14:35 bug/unity8-dash.log.6.gz
-rw-r----- nthnrssllnsr/nthnrssllnsr 120 2016-10-11 05:22 bug/unity8-filewatcher.log.1.gz
-rw-r----- nthnrssllnsr/nthnrssllnsr 4278 2016-10-05 21:43 bug/unity8.log.3.gz
-rw-r----- nthnrssllnsr/nthnrssllnsr 11025 2016-10-02 17:38 bug/unity8-dash.log.5.gz
-rw-r----- nthnrssllnsr/nthnrssllnsr 1230 2016-10-05 22:48 bug/unity8-dash.log.1.gz
-rw-r----- nthnrssllnsr/nthnrssllnsr 63 2016-10-02 07:12 bug/unity8.log.6.gz
-rw-r----- nthnrssllnsr/nthnrssllnsr 23743 2016-10-05 22:44 bug/unity8.log.2.gz
-rw-r----- nthnrssllnsr/nthnrssllnsr 94 2016-10-02 17:38 bug/unity8-dash.log.4.gz
drwxr-xr-x nthnrssllnsr/nthnrssllnsr 0 2016-10-20 04:56 bug/
-rw-r----- nthnrssllnsr/nthnrssllnsr 4101 2016-10-02 17:38 bug/unity8.log.5.gz
-rw-r----- nthnrssllnsr/nthnrssllnsr 583 2016-10-05 22:47 bug/unity8.log.1.gz
-rw------- nthnrssllnsr/nthnrssllnsr 0 2016-10-15 03:43 bug/unity-system-compositor.log
-rw-r----- nthnrssllnsr/nthnrssllnsr 788 2016-10-05 21:42 bug/unity8-dash.log.3.gz

[Daniel van Vugt (vanvugt)]

Oh! It looks like your problem might simply be that the default graphics drivers are not installed...

Please run:
   sudo apt install mir-graphics-drivers-desktop
and then reboot/try again.

[Launchpad Janitor (janitor)]

[Expired for unity8 (Ubuntu) because there has been no activity for 60 days.]