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On 2014-01-30T08:02:02+00:00 Anton Sudak wrote:

Created attachment 93039
dmesg

Discrete videocard is missing linux 3.13. There no /sys/kernel/debug/vgaswitcheroo and xrandr --listproviders shows me only Intel videocard. Videocard also missing in lspci output. I provide dmesg, there are some traces which can be related to this bug. I already tried
The last working kernel version for me is 3.12.9.

My configuration:
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Turks [Radeon HD 7650A/7670A]

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1276958/comments/0


** Changed in: linux
       Status: Unknown => Confirmed

** Changed in: linux
   Importance: Unknown => Medium

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https://bugs.launchpad.net/bugs/1276958

Title:
  Discrete Radeon videocard is missing with kernel  3.13

Status in The Linux Kernel:
  Confirmed
Status in “linux” package in Ubuntu:
  New

Bug description:
  Discrete videocard is missing linux 3.13. There no
  /sys/kernel/debug/vgaswitcheroo and xrandr --listproviders shows me
  only Intel videocard. Videocard also missing in lspci output. There
  are some traces in dmesg which can be related to this bug. The last
  working kernel version for me is 3.12.9.

  My configuration:
  00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller (rev 09)
  01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Turks [Radeon HD 7650A/7670A]

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-7-generic 3.13.0-7.25
  ProcVersionSignature: Ubuntu 3.13.0-7.25-generic 3.13.1
  Uname: Linux 3.13.0-7-generic x86_64
  ApportVersion: 2.13.2-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  asudak     1964 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Thu Feb  6 10:48:42 2014
  HibernationDevice: RESUME=UUID=af09981e-c60b-4d4e-9bbe-8326111d555f
  InstallationDate: Installed on 2013-12-27 (40 days ago)
  InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Release amd64 (20131017)
  MachineType: Dell Inc. Inspiron One 2330
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-7-generic.efi.signed root=UUID=13b39ae0-892a-4b5a-ab81-62dba9463c1a ro quiet splash radeon.dpm=1 radeon.runpm=1 vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-7-generic N/A
   linux-backports-modules-3.13.0-7-generic  N/A
   linux-firmware                            1.123
  SourcePackage: linux
  UpgradeStatus: Upgraded to trusty on 2014-02-06 (0 days ago)
  dmi.bios.date: 05/13/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A13
  dmi.board.name: 09JR1D
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 13
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 27147636_1
  dmi.modalias: dmi:bvnDellInc.:bvrA13:bd05/13/2013:svnDellInc.:pnInspironOne2330:pvr00:rvnDellInc.:rn09JR1D:rvrA00:cvnDellInc.:ct13:cvr27147636_1:
  dmi.product.name: Inspiron One 2330
  dmi.product.version: 00
  dmi.sys.vendor: Dell Inc.

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