Lightdm starts USC (and hence Unity8) on a different VT (8 or 9) but doesn't switch to that VT

[Daniel van Vugt]

Lightdm starts USC (and hence Unity8) on a different VT (8 or 9) but doesn't switch to that VT.

The result is a black screen, as Unity8 is running but the system defaults to the wrong VT so it's not visible.

[Daniel van Vugt (vanvugt)]

Workaround:

Ctrl+Alt+F8/F9 and I can usually then find Unity8.

[Robert Ancell (robert-ancell)]

Is this running with seat type "xlocal" or "unity"?

[Robert Ancell (robert-ancell)]

Also, please attach a lightdm.log

[Robert Ancell (robert-ancell)]

Following up on this I've ended up refactoring all this code to fix this bug and others and make it easier to understand.

[Daniel van Vugt (vanvugt)]

Annoyingly I'm finding Unity8 fails to start on this laptop 50% of the time, for seemingly different reasons each time. Not sure if I can reliably attach logs relevant to this particular bug right now.

[Daniel van Vugt (vanvugt)]

I think this is causing critical bug 1537389. Although it might be Mir itself failing to VT switch.

[Robert Ancell (robert-ancell)]

Are you affected by bug 1576260? That seems to be making my life difficult in testing this..

[Daniel van Vugt (vanvugt)]

No I'm not affected by bug 1576260 when I test it but it smells like the same issue.

[Launchpad Janitor (janitor)]

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

[Robert Ancell (robert-ancell)]

Can you try lightdm 1.19.1 / 1.18.2 and see if that solves this?

[Daniel van Vugt (vanvugt)]

Looking good since around the time bug 1576260 got fixed.

[Launchpad Janitor (janitor)]

[Expired for Mir because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

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