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[Bug 1283826] Re: lightdm hangs after updates

 

I recently installed ubuntu studio 14.4/trusty and though the
installation seemd to go well and the system had been working fine,
yesterday when I ran the gui "Software Updater" and did a restart when
the updates were done (as it wanted me to do) the computer went through
a welcome screen that says "Ubuntu Studio for creative humans etc," then
to a log in where I entered my password, then to a blank screen. The
first time that blank screen had (I'm quite certain) my desktopp image,
but the boot process stopped there. The next times I tried to boot it
got to almost the same stage, but never to the desktop image, instead
there was only a blank white screen (I don't know if it's significant
but rather than pure white it was white with what looked like many
single pixels of a darker color, as if the screen were dirty).  Normally
the next thing presented would be a dialog offering that I could select
a session, but it would get stuck before that. In its stuck state the
mouse still worked, with a mouse pointer image moving around on the
screen. I could also do ctl-alt-Fn and get to a console, but to be
honest I didn't know what to do from there.

For unusual reasons I happen to have a backup of the root partition made
with fsarchiver just before I had tried running the "Software Updater"
and with this I could last night restore the partition to the state it
was in just before the system was hosed. If it would be helpful in
debugging this issue I could for example run "Software Updater" again
and then mount the presumably hosed system from a copy of Quantal I have
on an external drive, then copy and upload somehow the apt and dpkg logs
(and/or others). I don't know if it's possible for you to contact me
(I'm new to launcpad) but assuming it is, then please let me know if
you'd like me to do this.

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https://bugs.launchpad.net/bugs/1283826

Title:
  lightdm hangs after updates

Status in GDM: The Gnome Display Manager:
  New
Status in Light Display Manager:
  New
Status in “lightdm” package in Ubuntu:
  Confirmed

Bug description:
  I've updated today my Trusy Thar installation. I can't login to Unity,
  with my account, or a guest account. Lightdm hangs after password
  input, or after I click on the Guest account.

  Also, I used to auto-login. Now it greets me with the screen where I
  must input my password. After inputing it, lightdm hangs and I can't
  login.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: lightdm 1.9.8-0ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-12.32-generic 3.13.4
  Uname: Linux 3.13.0-12-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.13.2-0ubuntu5
  Architecture: amd64
  Date: Sun Feb 23 23:16:24 2014
  InstallationDate: Installed on 2014-01-25 (29 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64+mac (20140115)
  LightdmConfig:
   [SeatDefaults]
   autologin-guest=false
   autologin-user=cristi
   autologin-user-timeout=0
   autologin-session=lightdm-autologin
  SourcePackage: lightdm
  UpgradeStatus: No upgrade log present (probably fresh install)

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