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[grga ptic <0.gl.gl.gl.gl.0@xxxxxxxxx>]

** Description changed:

  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)
+ 3) Instead of showing password entry for encrypted boot SSD, 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.
+ Previously I had removed all but the latest 3.16/3.13 kernels, but this
+ may be a coincidence because the latest kernels started without problems
+ before.
  
- Note 1: My OS starts from an SSD.
+ UPDATE:
+ - Recently, the black screen always shows when booting the 3.6 kernel
+ - When booting from kernel 3.13, this problem does not appear anymore
+ 
+ (Set default kernel to 3.13 as a workaround)
+ 
+ Note 1: My OS starts from an SSD, encrypted via LUKS
  
  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
+ Note 3: Ubuntu HWE is enabled (Kernel 3.16)
+ 
+ Note 4: 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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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
  3) Instead of showing password entry for encrypted boot SSD, 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 3.16/3.13 kernels, but
  this may be a coincidence because the latest kernels started without
  problems before.

  UPDATE:
  - Recently, the black screen always shows when booting the 3.6 kernel
  - When booting from kernel 3.13, this problem does not appear anymore

  (Set default kernel to 3.13 as a workaround)

  Note 1: My OS starts from an SSD, encrypted via LUKS

  Note 2: My graphics card is recognised as Mobility Radeon HD 5430

  Note 3: Ubuntu HWE is enabled (Kernel 3.16)

  Note 4: 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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