new unity lock screen doesn't appear after resume

[James Troup]

New lock screen is awesome. Unfortunately, for me, whenever I resume,
I get a blank screen. I can switch VTs but switching to a text VT and
back to X doesn't help. If I unplug and/or re-plug my external
display, I'll sometimes get a black screen with a mouse, sometimes a
lock screen that doesn't appear to be accepting keyboard input.

This has happened twice now, running current trusty and I've ended up
rebooting each time.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.1.2+14.04.20140318-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-18.38-generic 3.13.6
Uname: Linux 3.13.0-18-generic x86_64
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CurrentDesktop: Unity
Date: Thu Mar 20 23:26:52 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2011-10-20 (882 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
SourcePackage: unity
UpgradeStatus: Upgraded to trusty on 2014-02-19 (29 days ago)

[James Troup (elmo)]

https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1292217 may or may not be related; but simply allowing the screen to timeout lock is not sufficient for me to reproduce, nor is plugging/unplugging an external display. Suspend/resume seems to be the trigger.

[Sebastien Bacher (seb128)]

Thanks James. What videodriver are you using? When that happens could you go to a vt and get a gdb backtrace of the compiz process, that might give an indication on whether it's stucked in some codepath.

[James Troup (elmo)]

Sebastien Bacher <email address hidden> writes:

> What videodriver are you using?

Intel Sandybridge Mobile.

> When that happens could you go to a vt and get a gdb backtrace of
> the compiz process, that might give an indication on whether it's
> stucked in some codepath.

Sure, will do.

--
James

[Launchpad Janitor (janitor)]

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

[Lázaro Zarê (lazaronbh)]

I have more or less the same problem, and create a new bug few days ago..
But in my case, I use a AMD GPU
https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/1298650

[James Troup (elmo)]

FWIW, I can no longer reproduce this behaviour. I've survived several days of suspend/resume cycles while using an external display. Instead I'm seeing the double lock behaviour (unity + gnome screensaver).

[Lázaro Zarê (lazaronbh)]

James Troup
Same here!
Sometimes I see the Gnome-Lockscreen + Unity lockscreen too

[Marco Trevisan (Treviño) (3v1n0)]

Can you reproduce this after yesterday's update?

[Lázaro Zarê (lazaronbh)]

After a clean reinstall using the final release ISO, Bug Solved!

[Andrea Azzarone (azzar1)]

Marking as invalid per comment #10.