kernel-packages team mailing list archive

[M Ali <1165965@xxxxxxxxxxxxxxxxxx>]

Hey guys,

Just FYI, I've found a workaround for this issue on 12.04.03 LTS. The fix involves installing kernel v3.12-rc6 suggested by Christopher. I had wireless and keyboard issues but they were minor fixes. See details in posts #6 & #7:
https://bugs.launchpad.net/ubuntu/+source/linux-lts-raring/+bug/1242013

My monitor is working with the DP to VGA, wifi and keyboard also work
fine. Woo. I'll keep testing and post back any updates.

You should definitely try it to see if it fixes your issue too.

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https://bugs.launchpad.net/bugs/1165965

Title:
  External display stopped working

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  After upgrading to 13.04 beta, my external monitor is no longer
  detected/driven. This works perfectly under 12.10, and is therefore a
  major regression impacting common use cases.

  When the Display Port/VGA adapter is plugged in dmesg reports 15 instances of:
      [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up

  Hardware: MacBook Air 2012
  Display configuration: Apple Display Port to VGA adaptor
  Ubuntu version: 13.04 beta.
  --- 
  ApportVersion: 2.9.2-0ubuntu5
  Architecture: amd64
  DistroRelease: Ubuntu 13.04
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2012-07-24 (258 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MarkForUpload: True
  Package: linux (not installed)
  Tags:  raring
  Uname: Linux 3.9.0-030900rc6-generic x86_64
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UpgradeStatus: Upgraded to raring on 2013-04-07 (2 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  --- 
  ApportVersion: 2.12.5-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  mwp        3892 F.... pulseaudio
  DistroRelease: Ubuntu 13.10
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2012-07-24 (453 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MachineType: Apple Inc. MacBookAir5,2
  MarkForUpload: True
  NonfreeKernelModules: wl
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-12-generic root=UUID=6556813f-c877-4988-bde5-24ac4ec74444 ro nointremap quiet splash i915.i915_enable_rc6=1 vt.handoff=7
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-12-generic N/A
   linux-backports-modules-3.11.0-12-generic  N/A
   linux-firmware                             1.116
  Tags:  saucy
  Uname: Linux 3.11.0-12-generic x86_64
  UpgradeStatus: Upgraded to saucy on 2013-10-21 (0 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 05/22/2012
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBA51.88Z.00EF.B00.1205221442
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-2E6FAB96566FE58C
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookAir5,2
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-2E6FAB96566FE58C
  dmi.modalias: dmi:bvnAppleInc.:bvrMBA51.88Z.00EF.B00.1205221442:bd05/22/2012:svnAppleInc.:pnMacBookAir5,2:pvr1.0:rvnAppleInc.:rnMac-2E6FAB96566FE58C:rvrMacBookAir5,2:cvnAppleInc.:ct10:cvrMac-2E6FAB96566FE58C:
  dmi.product.name: MacBookAir5,2
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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