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[György Solymosi <george.solymosi@xxxxxxxxx>]

Exactly the same problem:
With the latest drivers.
This bug is still affecting me. I have a desktop with two nVidia cards in an SLI configuration. I need a custom xorg.conf to support my 1440p monitor, but my xorg.conf gets renamed to xorg.conf.yyyymmdd almost every reboot.

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https://bugs.launchpad.net/bugs/1310489

Title:
  xorg.conf overwritten by booting system

Status in ubuntu-drivers-common package in Ubuntu:
  Fix Released
Status in ubuntu-drivers-common source package in Trusty:
  Fix Released

Bug description:
  Description:	Ubuntu 14.04 LTS
  Release:	14.04

  ----------------

  == SRU Request ==

  There is a regression in the gpu-manager that causes it to revert user
  changes right before the first reboot after enabling the fglrx driver
  or the nvidia driver on a system with hybrid graphics (Intel+AMD or
  Intel+NVIDIA). This causes the gpu-manager to remove the current
  xorg.conf and to switch to Mesa.

  [Impact]
   * This regression makes it almost impossible to use binary drivers on systems with hybrid graphics.

  [Test Case]
   * Make sure to be using a hybrid system with Intel+AMD or Intel+NVIDIA GPUs.

   * Make sure that the gpu-manager is not disabled (only necessary if
  you disabled it manually).

   * Remove all fglrx and nvidia drivers (keep the nvidia-common and the nvidia-prime packages):
     sudo apt-get --purge remove nvidia-331
     sudo apt-get --purge remove nvidia-331
     sudo apt-get --purge remove fglrx
     sudo apt-get --purge remove fglrx-updates

   * Install ubuntu-drivers-common from trusty-proposed.

   * Restart the system.

   * Install the binary driver (either fglrx or nvidia, according to the available discrete GPU), reboot, and check that the binary driver is enabled (attach your /var/log/gpu-manager.log)
      - Expected: the (AMD or NVIDIA) discrete GPU is enabled.
      - Bad behavior: the system switches back to the intel driver and the discrete GPU is not used, despite the fact that the system was configured properly.

  [Regression Potential]
   * Low. Systems that currently work will keep working as usual, the ones that currently fail should finally work.

  [Other Info]
   * N/A

  -----------------

  Hello,

  I am using a notebook with a quadcore AMD A10 and hybrid graficcard AMD/ATI Radeon HD 8650G / AMD/ATI Sun XT Radeon HD 8670A/8670M/8690M.
  After installing fglrx I generated the xorg.conf in the terminal with 'sudo aticonfig --adapter=all --initial' and it looked pretty good. Up to this point I was able to switch between the cards with the commands 'sudo aticonfig --px-dgpu' for the discrete card and 'sudo aticonfig --px-igpu' for the intigrated card to save power.
  After rebooting I realized that I was no longer able to switch between the cards and found that the xorg.conf will be overwritten whenever I modified it and reboot the system. The new (by boot) generated xorg.conf contains not the relevant information for switing between the cards.
  I attached both configuration in one file (xorg.conf.comparison). I will also provide the atisysteminfo-report.txt so far I will find the place where to attach.

  Edit: I fixed the error --> "AIGLX error: failed to open
  /usr/lib64/dri/fglrx_dri.so, error[/usr/lib64/dri/fglrx_dri.so: cannot
  open shared object file: No such file or directory]" but it changed
  not the bug of overwriting the xorg.conf.

  Regards,
  Uwe

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  NonfreeKernelModules: fglrx
  .tmp.unity.support.test.0:

  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: Unity
  Date: Mon Apr 21 08:43:29 2014
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  DkmsStatus: fglrx, 13.350.1, 3.13.0-24-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Advanced Micro Devices, Inc. [AMD/ATI] Richland [Radeon HD 8650G] [1002:990b] (prog-if 00 [VGA controller])
     Subsystem: Hewlett-Packard Company Device [103c:1985]
     Subsystem: Hewlett-Packard Company Device [103c:1985]
  InstallationDate: Installed on 2014-04-20 (0 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Hewlett-Packard HP Pavilion 17 Notebook PC
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=fdcb1eaf-eda9-48ee-9d5b-b44e1fc06687 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/26/2013
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.22
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 1985
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 01.13
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsyde:bvrF.22:bd09/26/2013:svnHewlett-Packard:pnHPPavilion17NotebookPC:pvr0892100000005910000600000:rvnHewlett-Packard:rn1985:rvr01.13:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP Pavilion 17 Notebook PC
  dmi.product.version: 0892100000005910000600000
  dmi.sys.vendor: Hewlett-Packard
  version.compiz: compiz 1:0.9.11+14.04.20140409-0ubuntu1
  version.fglrx-installer: fglrx-installer N/A
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu5
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu5
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Mon Apr 21 08:29:06 2014
  xserver.configfile: /etc/X11/xorg.conf
  xserver.errors:
   open /dev/dri/card0: No such file or directory
   AIGLX error: failed to open /usr/X11R6/lib64/modules/dri/fglrx_dri.so, error[/usr/X11R6/lib64/modules/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
   AIGLX error: failed to open /usr/lib64/dri/fglrx_dri.so, error[/usr/lib64/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
   AIGLX error: failed to open /usr/X11R6/lib/modules/dri/fglrx_dri.so, error[/usr/X11R6/lib/modules/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.15.1-0ubuntu2
  xserver.video_driver: fglrx

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