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Message #161722
[Bug 1512691] Re: [MacBookPro11, 3] Backlight control does not work, but there are entries in /sys/class/backlight
http://www.spinics.net/lists/platform-driver-x86/msg08438.html
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https://bugs.launchpad.net/bugs/1512691
Title:
[MacBookPro11,3] Backlight control does not work, but there are
entries in /sys/class/backlight
Status in linux package in Ubuntu:
Triaged
Bug description:
Backlight control stopped working after upgrade from Vivid to Wily.
/sys/class/backlight/gmux_backlight$ grep . *
actual_brightness:16777215
bl_power:0
brightness:400
grep: device: Is a directory
max_brightness:-1
grep: power: Is a directory
grep: subsystem: Is a directory
type:platform
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.2.0-16-generic 4.2.0-16.19
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.19.1-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: gaele 2525 F.... pulseaudio
/dev/snd/controlC0: gaele 2525 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Nov 3 13:44:25 2015
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=716bc023-ef4e-436e-8e5b-5a1f548faef8
InstallationDate: Installed on 2015-04-26 (190 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: Apple Inc. MacBookPro11,3
ProcFB: 0 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic.efi.signed root=UUID=38c8fe6d-3763-4619-a710-f65494173fe4 ro quiet splash libata.force=noncq vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.2.0-16-generic N/A
linux-backports-modules-4.2.0-16-generic N/A
linux-firmware 1.149
SourcePackage: linux
UpgradeStatus: Upgraded to wily on 2015-10-22 (11 days ago)
dmi.bios.date: 06/05/2015
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP112.88Z.0138.B15.1506050548
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-2BD1B31983FE1663
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro11,3
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-2BD1B31983FE1663
dmi.modalias: dmi:bvnAppleInc.:bvrMBP112.88Z.0138.B15.1506050548:bd06/05/2015:svnAppleInc.:pnMacBookPro11,3:pvr1.0:rvnAppleInc.:rnMac-2BD1B31983FE1663:rvrMacBookPro11,3:cvnAppleInc.:ct10:cvrMac-2BD1B31983FE1663:
dmi.product.name: MacBookPro11,3
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
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