kernel-packages team mailing list archive

[Luke picciau <luke.b.picciau@xxxxxxxxx>]

Public bug reported:

The backlight on the MacBookAir7,1 can't be controlled, changing the
brightness setting has no effect on the actual screen brightness. If you
close the lid and the screen turns off it won't turn back on again, the
keyboard lights turn on and you can see the lcd is on if you hold it to
the light but the backlight won't turn back on.

Tested on Ubuntu 16.04 but it also affects 15.10

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-8-generic 4.4.0-8.23 [modified: boot/vmlinuz-4.4.0-8-generic]
ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2
Uname: Linux 4.4.0-8-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  qwertie    1445 F.... pulseaudio
 /dev/snd/controlC0:  qwertie    1445 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Feb 28 21:32:12 2016
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=57c0320e-dc88-4126-9554-7d5e81efd9ca
InstallationDate: Installed on 2016-02-28 (0 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160228)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 05ac:0290 Apple, Inc.
 Bus 001 Device 006: ID 05ac:828f Apple, Inc.
 Bus 001 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Apple Inc. MacBookAir7,1
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-8-generic.efi.signed root=UUID=1db7d07c-799d-46d8-95d4-7f86fca35114 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-8-generic N/A
 linux-backports-modules-4.4.0-8-generic  N/A
 linux-firmware                           1.156
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/02/2015
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBA71.88Z.0166.B08.1509021746
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-9F18E312C5C2BF0B
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookAir7,1
dmi.chassis.asset.tag: Chassis Board Asset Tag#
dmi.chassis.type: 9
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-9F18E312C5C2BF0B
dmi.modalias: dmi:bvnAppleInc.:bvrMBA71.88Z.0166.B08.1509021746:bd09/02/2015:svnAppleInc.:pnMacBookAir7,1:pvr1.0:rvnAppleInc.:rnMac-9F18E312C5C2BF0B:rvrMacBookAir7,1:cvnAppleInc.:ct9:cvrMac-9F18E312C5C2BF0B:
dmi.product.name: MacBookAir7,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

** Description changed:

  The backlight on the MacBookAir7,1 can't be controlled, changing the
  brightness setting has no effect on the actual screen brightness. If you
  close the lid and the screen turns off it won't turn back on again, the
  keyboard lights turn on and you can see the lcd is on if you hold it to
  the light but the backlight won't turn back on.
+ 
+ Tested on Ubuntu 16.04 but it also affects 15.10
  
  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-8-generic 4.4.0-8.23 [modified: boot/vmlinuz-4.4.0-8-generic]
  ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2
  Uname: Linux 4.4.0-8-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC1:  qwertie    1445 F.... pulseaudio
-  /dev/snd/controlC0:  qwertie    1445 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC1:  qwertie    1445 F.... pulseaudio
+  /dev/snd/controlC0:  qwertie    1445 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun Feb 28 21:32:12 2016
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=57c0320e-dc88-4126-9554-7d5e81efd9ca
  InstallationDate: Installed on 2016-02-28 (0 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160228)
  Lsusb:
-  Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
-  Bus 001 Device 003: ID 05ac:0290 Apple, Inc. 
-  Bus 001 Device 006: ID 05ac:828f Apple, Inc. 
-  Bus 001 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
-  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+  Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
+  Bus 001 Device 003: ID 05ac:0290 Apple, Inc.
+  Bus 001 Device 006: ID 05ac:828f Apple, Inc.
+  Bus 001 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
+  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Apple Inc. MacBookAir7,1
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-8-generic.efi.signed root=UUID=1db7d07c-799d-46d8-95d4-7f86fca35114 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
-  linux-restricted-modules-4.4.0-8-generic N/A
-  linux-backports-modules-4.4.0-8-generic  N/A
-  linux-firmware                           1.156
+  linux-restricted-modules-4.4.0-8-generic N/A
+  linux-backports-modules-4.4.0-8-generic  N/A
+  linux-firmware                           1.156
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/02/2015
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBA71.88Z.0166.B08.1509021746
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-9F18E312C5C2BF0B
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookAir7,1
  dmi.chassis.asset.tag: Chassis Board Asset Tag#
  dmi.chassis.type: 9
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-9F18E312C5C2BF0B
  dmi.modalias: dmi:bvnAppleInc.:bvrMBA71.88Z.0166.B08.1509021746:bd09/02/2015:svnAppleInc.:pnMacBookAir7,1:pvr1.0:rvnAppleInc.:rnMac-9F18E312C5C2BF0B:rvrMacBookAir7,1:cvnAppleInc.:ct9:cvrMac-9F18E312C5C2BF0B:
  dmi.product.name: MacBookAir7,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1550905

Title:
  [MacBookAir7,1] Backlight control broken. Won't turn on after suspend.

Status in linux package in Ubuntu:
  New

Bug description:
  The backlight on the MacBookAir7,1 can't be controlled, changing the
  brightness setting has no effect on the actual screen brightness. If
  you close the lid and the screen turns off it won't turn back on
  again, the keyboard lights turn on and you can see the lcd is on if
  you hold it to the light but the backlight won't turn back on.

  Tested on Ubuntu 16.04 but it also affects 15.10

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-8-generic 4.4.0-8.23 [modified: boot/vmlinuz-4.4.0-8-generic]
  ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2
  Uname: Linux 4.4.0-8-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  qwertie    1445 F.... pulseaudio
   /dev/snd/controlC0:  qwertie    1445 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun Feb 28 21:32:12 2016
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=57c0320e-dc88-4126-9554-7d5e81efd9ca
  InstallationDate: Installed on 2016-02-28 (0 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160228)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 05ac:0290 Apple, Inc.
   Bus 001 Device 006: ID 05ac:828f Apple, Inc.
   Bus 001 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Apple Inc. MacBookAir7,1
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-8-generic.efi.signed root=UUID=1db7d07c-799d-46d8-95d4-7f86fca35114 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-8-generic N/A
   linux-backports-modules-4.4.0-8-generic  N/A
   linux-firmware                           1.156
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/02/2015
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBA71.88Z.0166.B08.1509021746
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-9F18E312C5C2BF0B
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookAir7,1
  dmi.chassis.asset.tag: Chassis Board Asset Tag#
  dmi.chassis.type: 9
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-9F18E312C5C2BF0B
  dmi.modalias: dmi:bvnAppleInc.:bvrMBA71.88Z.0166.B08.1509021746:bd09/02/2015:svnAppleInc.:pnMacBookAir7,1:pvr1.0:rvnAppleInc.:rnMac-9F18E312C5C2BF0B:rvrMacBookAir7,1:cvnAppleInc.:ct9:cvrMac-9F18E312C5C2BF0B:
  dmi.product.name: MacBookAir7,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1550905/+subscriptions