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Message #112441
[Bug 1443144] [NEW] Stuck with black screen on every first boot (no signal)
Public bug reported:
Recently, the following behaviour appeared suddenly:
1) Switch on computer
2) Ubuntu splash screen appears with dots
3) Screen turns black and switches off (no signal)
4) Nothing happens
5) Forcibly restart computer
6) Everything works fine
This happens exactly like this every time I switch on the computer.
Previously I had removed all but the latest kernel [linux-lts-trusty
(3.13.0-48.80~precise1]), but this may be a coincidence because that
kernel started without problems before.
Note 1: My OS starts from an SSD.
Note 2: My graphics card is recognised as Mobility Radeon HD 5430
Note 3: A similar problem also appeared at the same time on an Ubuntu 12.04 LTS 64 bit installed on a different SSD on the same computer: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1441305
However, there I got stuck with a black screen on *every* boot. In the end, changing the display manager to "gdm" fixed the problem.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: lightdm 1.10.5-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-33.44~14.04.1-generic 3.16.7-ckt7
Uname: Linux 3.16.0-33-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.8
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Apr 12 19:41:35 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-07-23 (263 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: lightdm (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty
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https://bugs.launchpad.net/bugs/1443144
Title:
Stuck with black screen on every first boot (no signal)
Status in lightdm package in Ubuntu:
New
Bug description:
Recently, the following behaviour appeared suddenly:
1) Switch on computer
2) Ubuntu splash screen appears with dots
3) Screen turns black and switches off (no signal)
4) Nothing happens
5) Forcibly restart computer
6) Everything works fine
This happens exactly like this every time I switch on the computer.
Previously I had removed all but the latest kernel [linux-lts-trusty
(3.13.0-48.80~precise1]), but this may be a coincidence because that
kernel started without problems before.
Note 1: My OS starts from an SSD.
Note 2: My graphics card is recognised as Mobility Radeon HD 5430
Note 3: A similar problem also appeared at the same time on an Ubuntu 12.04 LTS 64 bit installed on a different SSD on the same computer: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1441305
However, there I got stuck with a black screen on *every* boot. In the end, changing the display manager to "gdm" fixed the problem.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: lightdm 1.10.5-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-33.44~14.04.1-generic 3.16.7-ckt7
Uname: Linux 3.16.0-33-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.8
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Apr 12 19:41:35 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-07-23 (263 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
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