Comment 0 for bug 1190341

I am using Ubuntu 13.04, fresh installation from scratch, on a MacBookPro10,1 (the one with Retina display). Two of my partition are encrypted (swap and /srv on which /home is bind mounted).

Since some upgrade to linux-image-3.8.0-24 backlight control does not work anymore. I am stuck with 3.8.0-23 in order to get something kind of working (I have to go in sleep mode at least once in order to get backlight control available).

I have the exact same symptoms than bug #1169376. The only difference is that no proposed fixes work at all. The last "almost working" kernel is 3.8.0-23.

I even tried 3.9.0-030900 "upstream" kernel with no success.

Sleep access is no more clean either. Sometime (more than a 1/3 of the cases) I am not able to resume the computer after having suspended it : sometime the computer is alive (I can ssh on it to shut it down since restarting lightdm does not resurrect the screen) but the screen is black, sometime it is not).

Everything was working fine with the first installation of 13.04.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image-3.8.0-23-generic 3.8.0-23.34
ProcVersionSignature: Ubuntu 3.8.0-23.34-generic 3.8.11
Uname: Linux 3.8.0-23-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.9.2-0ubuntu8.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: bruno 2696 F.... pulseaudio
 /dev/snd/controlC0: bruno 2696 F.... pulseaudio
CRDA:
 country FR:
  (2402 - 2482 @ 40), (N/A, 20)
  (5170 - 5250 @ 40), (N/A, 20)
  (5250 - 5330 @ 40), (N/A, 20), DFS
  (5490 - 5710 @ 40), (N/A, 27), DFS
Date: Wed Jun 12 21:02:22 2013
HibernationDevice: RESUME=UUID=a703c1e3-dfc2-46af-9905-b21abb747366
InstallationDate: Installed on 2013-02-06 (126 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64+mac (20121017.3)
MachineType: Apple Inc. MacBookPro10,1
MarkForUpload: True
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-23-generic root=UUID=5cafafc5-a506-4205-b6ba-e9fed6f9db99 ro quiet splash nomodeset vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.8.0-23-generic N/A
 linux-backports-modules-3.8.0-23-generic N/A
 linux-firmware 1.106
SourcePackage: linux
UpgradeStatus: Upgraded to raring on 2013-04-05 (68 days ago)
dmi.bios.date: 08/08/2012
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP101.88Z.00EE.B02.1208081132
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-C3EC7CD22292981F
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro10,1
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-C3EC7CD22292981F
dmi.modalias: dmi:bvnAppleInc.:bvrMBP101.88Z.00EE.B02.1208081132:bd08/08/2012:svnAppleInc.:pnMacBookPro10,1:pvr1.0:rvnAppleInc.:rnMac-C3EC7CD22292981F:rvrMacBookPro10,1:cvnAppleInc.:ct10:cvrMac-C3EC7CD22292981F:
dmi.product.name: MacBookPro10,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.