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[Yung Shen <1316095@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-bug-exists-upstream

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

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

Status in “linux” package in Ubuntu:
  Confirmed
Status in “nvidia-prime” package in Ubuntu:
  New

Bug description:
  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.

  Step to reporduce:

  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
  unknown

  
  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.

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