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

Bug #1589550 reported by Daniel van Vugt on 2016-06-06
10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Light Display Manager
Undecided
Unassigned
Mir
Expired
Undecided
Unassigned
lightdm (Ubuntu)
Undecided
Unassigned

Bug Description

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) wrote :

Workaround:

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

tags: added: black-screen
Robert Ancell (robert-ancell) wrote :

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

Robert Ancell (robert-ancell) wrote :

Also, please attach a lightdm.log

Robert Ancell (robert-ancell) wrote :

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) wrote :

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) wrote :

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

Robert Ancell (robert-ancell) wrote :

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

Daniel van Vugt (vanvugt) wrote :

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

Launchpad Janitor (janitor) wrote :

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

Changed in lightdm (Ubuntu):
status: New → Confirmed
Robert Ancell (robert-ancell) wrote :

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

Daniel van Vugt (vanvugt) wrote :

Looking good since around the time bug 1576260 got fixed.

Changed in lightdm:
status: New → Incomplete
Changed in mir:
status: New → Incomplete
Changed in lightdm (Ubuntu):
status: Confirmed → Incomplete
Launchpad Janitor (janitor) wrote :

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

Changed in mir:
status: Incomplete → Expired
Launchpad Janitor (janitor) wrote :

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

Changed in lightdm (Ubuntu):
status: Incomplete → Expired
To post a comment you must log in.
This report contains Public information  Edit
Everyone can see this information.

Other bug subscribers