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["Rich.T." <1486673@xxxxxxxxxxxxxxxxxx>]

Update: This issue is still not resolved on my system, and I am still
stuck on pre-3.19.0-26 kernels.

However, I managed to find an unused SSD knocking around and so I
installed a fresh copy of Ubuntu 14.04 to this drive, immediately dist-
upgrade-ed, successfully rebooted and logged in, installed flgrx-updates
and then successfully rebooted and logged in fine again.

There was no sign of the freezing-up on the login screen this time.

I don't know what happened; whether there was some sort of corruption as
a result of the whole process, or whatever; but it looks as though I'm
going to have to re-install Ubuntu and migrate all of my settings, fine-
tunings, custom scripts, programs and repositories across to the new
system.

I'm not happy, but such is life...

I'll mark this bug as closed, but I'm going to link to it in the fglrx-
installer bug for future reference.

Thanks,
Rich

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https://bugs.launchpad.net/bugs/1486673

Title:
  Attempting to enable multi-screen mode via amdcccle (with screen 1 to
  the right of screen 2) causes X to crash severely, as soon as you hit
  "OK" or "Apply"

Status in xorg package in Ubuntu:
  Fix Released

Bug description:
  This bug relates directly with
  https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/1479913
  (caused by the recent 3.19.0-26 kernel roll-out).

  I have implemented  the fix, by enabling the "Proposed" repository and
  also switching to "fglrx updates" but this only worsened the problem
  as this has caused an issue whereby my system hangs, solid, right at
  the login screen, when I boot into 3.19.0-26.

  When I boot into an earlier kernel build, the problem is not present,
  but no matter what I try doing; ie. uninstalling flgrx; using xserver-
  xorg-video-ati; reinstalling fglrx; reinstalling the new kernel;
  reinstalling xorg; changing the screen configuration; changing and
  removing monitors and their configuration; the system still hangs on
  booting into 3.19.0-26.

  I have noticed that when I boot into a working kernel however; the
  login screen seems to still have my old monitor configuration ie. with
  screen 1 to the right of screen 2, even if, upon logging in, the
  monitors are configured differently.

  I have reported this under the above summary because at least one
  other user has reported this same behavior
  (https://bugs.launchpad.net/ubuntu/+source/fglrx-
  installer/+bug/1479913/comments/51) and I believe that this has the
  same root cause as my problem.

  As to why the login screen keeps defaulting to my old configuration, I
  do not know (perhaps a problem with lightdm, or somthing), but the
  only option that seems left open to me at the moment is a full
  reinstall, which I would really like to avoid at the moment; at least
  until Wily comes out.

  Sorry to be so long winded, but this seems to be quite a serious issue
  and I would like it to be resolved.

  Thank you,
  Rich

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-25.26-generic 3.19.8-ckt2
  Uname: Linux 3.19.0-25-generic x86_64
  NonfreeKernelModules: fglrx
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.17.2-0ubuntu1.3
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  Date: Wed Aug 19 17:49:01 2015
  DistUpgraded: Fresh install
  DistroCodename: vivid
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Advanced Micro Devices, Inc. [AMD/ATI] Barts XT [Radeon HD 6870] [1002:6738] (prog-if 00 [VGA controller])
     Subsystem: PC Partner Limited / Sapphire Technology Device [174b:174b]
  InstallationDate: Installed on 2014-11-23 (269 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: System manufacturer System Product Name
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-25-generic root=UUID=ac803c35-9f47-487f-ac09-c35efe8d953f ro quiet splash
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/14/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1503
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: M5A78L-M/USB3
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1503:bd11/14/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM5A78L-M/USB3:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
  version.fglrx-installer: fglrx-installer N/A
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.9-2ubuntu1~vivid1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.9-2ubuntu1~vivid1
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Wed Aug 19 17:18:40 2015
  xserver.configfile: default
  xserver.devices:
   input        Power Button         KEYBOARD, id 6
   input        Power Button         KEYBOARD, id 7
   input        Logitech USB Receiver KEYBOARD, id 8
   input        Logitech USB Receiver KEYBOARD, id 9
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.17.1-0ubuntu3
  xserver.video_driver: fglrx

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