** Tags added: latest-bios-a07 regression-potential

** Tags removed: regression-potential
** Tags added: needs-bisect regression-release

** Description changed:

- Unable to switch back to nvidia graphic chip after reboot.
+ Unable to switch back to nvidia graphic chip after reboot. Switching
+ graphics does not requires reboot, but it does cause issue when user had
+ to reboot for some reason, and will not able to use nvidia graphic until
+ reboot.
  
- Switching graphics does not requires reboot, but it does cause issue
- when user had to reboot for some reason, and will not able to use nvidia
- graphic until reboot.
+ Step to reproduce: Switch to intel integrated graphic driver first if you 
were not,
+ open nvidia settings from dash or use following command:
+ sudo prime-select intel && sudo reboot now
  
- Step to reporduce:
+ Expected result: Able to switch back to nvidia graphic chip using nvidia
+ settings.
  
- Switch to intel integrated graphic driver first if you were not,
- open nvidia settings from dash or use following command:
- $ sudo prime-select intel
- then reboot
- 
- Expected result:
- 
- Able to switch back to nvidia graphic chip using nvidia settings.
- 
- Actuall result:
- 
- unable to swich back to nvidia driver, the 3D controller disapeared in
- pci list.
- 
- nvidia-settings will give you empty warning prompt,
- checking from console gives you unkown result:
- $ sudo prime-select query
+ Actuall result: unable to swich back to nvidia driver, the 3D controller 
disapeared in pci list. nvidia-settings will give you empty warning prompt, 
checking from console gives you unkown result:
+ sudo prime-select query
  unknown
  
- 
- Workaround:
- 
- Shutdown the system then turn on, the 3D controller will be back.
+ WORKAROUND: Shutdown the system then turn on, the 3D controller will be
+ back.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified: 
boot/vmlinuz-3.13.0-24-generic]
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     1750 F.... pulseaudio
  CRDA:
   country TW:
    (2402 - 2472 @ 40), (3, 27)
    (5270 - 5330 @ 40), (3, 17), DFS
    (5735 - 5815 @ 40), (3, 30)
  CurrentDesktop: Unity
  Date: Mon May  5 07:02:04 2014
  HibernationDevice: RESUME=UUID=c19bacd6-a604-4c9b-9a21-5d0a2d9cef5c
  InstallationDate: Installed on 2014-04-29 (6 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Dell Inc. Vostro 5460
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic 
root=UUID=15cbb6aa-65e8-4596-be71-2ff7431000be ro rootdelay=60 quiet splash 
initcall_debug
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/04/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A07
  dmi.board.name: TIE3C2
  dmi.board.vendor: Dell Inc.
  dmi.board.version: X00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: 
dmi:bvnDellInc.:bvrA07:bd09/04/2013:svnDellInc.:pnVostro5460:pvr:rvnDellInc.:rnTIE3C2:rvrX00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: Vostro 5460
  dmi.sys.vendor: Dell Inc.

** Tags removed: kernel-bug-exists-upstream
** Tags added: kernel-bug-exists-upstream-3.15-rc4

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https://bugs.launchpad.net/bugs/1316095

Title:
  [Nvidia GF117M] 10de:1140 3D Controller disapear after reboot

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