Public bug reported:
This is a laptop with a broken internal display ("LVDS1" in xrandr
output), and therefore connected to a working external LCD ("VGA1").
After upgrading from Precise to Trusty, boot ends with a black screen
(on the external display). The greeter sound effect is played. Typing my
password (I'm the sole user) does log me in, and brings up the desktop
on the display.
So the login functionality is there, just the visuals are missing. And
they do flash by (corrupted) when the desktop is loading; if I set
automatic login for myself, I get a desktop with the login screen as the
background image (I'll attach a screenshot).
There are existing, similar reports but all with subtle differences from
this (such as Bug #1252748, where the user only gets black screen half
the time) or too vague for me to claim to be the same issue with
certainty (such as Bug #1242213). A lightdm restart (such as in Bug
#969489) doesn't fix this (i.e. black screen still after lightdm
restart).
I'm not sure whether this is a lightdm issue or a unity-greeter one, so
my reporting this against the latter is just a guess.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity-greeter 14.04.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.12.0-4.10-generic 3.12.1
Uname: Linux 3.12.0-4-generic x86_64
ApportVersion: 2.12.7-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Nov 23 20:53:43 2013
InstallationDate: Installed on 2012-05-25 (547 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
SourcePackage: unity-greeter
UpgradeStatus: Upgraded to trusty on 2013-11-17 (6 days ago)
** Affects: unity-greeter (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty
** Attachment added: "Unity desktop (Trusty) with login screen as background
picture"
https://bugs.launchpad.net/bugs/1254319/+attachment/3915585/+files/Kuvakaappaus%202013-11-23%2017%3A14%3A45.png
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https://bugs.launchpad.net/bugs/1254319
Title:
Black screen instead of login screen; input works
Status in “unity-greeter” package in Ubuntu:
New
Bug description:
This is a laptop with a broken internal display ("LVDS1" in xrandr
output), and therefore connected to a working external LCD ("VGA1").
After upgrading from Precise to Trusty, boot ends with a black screen
(on the external display). The greeter sound effect is played. Typing
my password (I'm the sole user) does log me in, and brings up the
desktop on the display.
So the login functionality is there, just the visuals are missing. And
they do flash by (corrupted) when the desktop is loading; if I set
automatic login for myself, I get a desktop with the login screen as
the background image (I'll attach a screenshot).
There are existing, similar reports but all with subtle differences
from this (such as Bug #1252748, where the user only gets black screen
half the time) or too vague for me to claim to be the same issue with
certainty (such as Bug #1242213). A lightdm restart (such as in Bug
#969489) doesn't fix this (i.e. black screen still after lightdm
restart).
I'm not sure whether this is a lightdm issue or a unity-greeter one,
so my reporting this against the latter is just a guess.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity-greeter 14.04.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.12.0-4.10-generic 3.12.1
Uname: Linux 3.12.0-4-generic x86_64
ApportVersion: 2.12.7-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Nov 23 20:53:43 2013
InstallationDate: Installed on 2012-05-25 (547 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
SourcePackage: unity-greeter
UpgradeStatus: Upgraded to trusty on 2013-11-17 (6 days ago)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1254319/+subscriptions
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