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[Bug 1440270] Re: regression: backlight can't be adjusted on UX32VD with 3.19.0-12-generic kernel

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1440270@xxxxxxxxxxxxxxxxxx>
Date: Sat, 11 Apr 2015 00:40:16 -0000
Reply-to: Bug 1440270 <1440270@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
This bug was fixed in the package linux - 3.19.0-13.13

---------------
linux (3.19.0-13.13) vivid; urgency=low

  [ Andy Whitcroft ]

  * [Packaging] initscripts need installing when making the package
  * [Packaging] initscripts work around bug in debhelper systemd support

  [ Jay Vosburgh ]

  * SAUCE: fan: Proof of concept implementation
    - LP: #1439706

  [ Leann Ogasawara ]

  * Release Tracking Bug
    - LP: #1442165

  [ Upstream Kernel Changes ]

  * Revert "drm: fix mismerge in drm_crtc.c"
    - LP: #1440270, #1440392
  * e1000e: initial support for i219
    - LP: #1400955
  * e1000e: fix obscure comments
    - LP: #1400955
  * e1000e: remove calls to ioremap/unmap for NVM addr
    - LP: #1400955
  * d-i: Enable usb modules on arm64
  * drm/amdkfd: Initialize only amdkfd's assigned pipelines
  * storvsc: use cmd_size to allocate per-command data
  * storvsc: in responce to a scan event, scan the host
  * storvsc: force discovery of LUNs that may have been removed.
  * storvsc: fix a bug in storvsc limits
  * Drivers: hv: vmbus: Use get_cpu() to get the current CPU
  * Tools: hv: address compiler warnings for hv_fcopy_daemon.c
  * Tools: hv: do not add redundant '/' in hv_start_fcopy()
  * Drivers: hv: hv_balloon: Make adjustments in computing the floor
  * Drivers: hv: hv_balloon: Fix a locking bug in the balloon driver
  * Drivers: hv: hv_balloon: Don't post pressure status from interrupt
    context
  * Drivers: hv: vmbus: Implement a clockevent device
  * Drivers: hv: vmbus: Fix a bug in vmbus_establish_gpadl()
  * Drivers: hv: vmbus: Support a vmbus API for efficiently sending page
    arrays
  * hv: hv_fcopy: drop the obsolete message on transfer failure
  * Drivers: hv: check vmbus_device_create() return value in
    vmbus_process_offer()
  * Drivers: hv: rename sc_lock to the more generic lock
  * Drivers: hv: vmbus: serialize Offer and Rescind offer
  * Drivers: hv: vmbus: hv_process_timer_expiration() can be static
  * hyperv: netvsc.c: match wait_for_completion_timeout return type
  * hyperv: fix sparse warnings
  * powerpc/powernv: Add OPAL soft-poweroff routine
    - LP: #1439562
  * drivers/sbus/char/envctrl.c: ignore orderly_poweroff return value
    - LP: #1439562
  * kernel/reboot.c: add orderly_reboot for graceful reboot
    - LP: #1439562
  * powerpc/powernv: reboot when requested by firmware
    - LP: #1439562
  * powerpc/kernel: Make syscall_exit a local label
    - LP: #1439562
  * powerpc: Remove old compile time disabled syscall tracing code
    - LP: #1439562
  * powerpc: Add a proper syscall for switching endianness
    - LP: #1439562
  * powerpc/powernv: Remove "opal" prefix from pr_xxx()s
    - LP: #1439562
  * powerpc/powernv: Separate function for OPAL IRQ setup
    - LP: #1439562
  * powerpc/powernv: Add OPAL message notifier unregister function
    - LP: #1439562
  * powerpc/powernv: Support OPAL requested heartbeat
    - LP: #1439562
  * device: Add dev_of_node() accessor
    - LP: #1439562
  * drivers/core/of: Add symlink to device-tree from devices with an OF
    node
    - LP: #1439562
  * ipv6: Don't reduce hop limit for an interface
    - LP: #1441103
    - CVE-2015-2922
  * x86/microcode/intel: Guard against stack overflow in the loader
    - LP: #1438504
    - CVE-2015-2666
  * ASoC: Intel: Store the entry_point read from FW file
  * ASoC: Intel: remove conflicts when load/unload multiple firmware images
  * ASoC: Intel: Always enable DRAM block for FW dump
  * ASoC: Intel: Add stream direction for pcm-module map
  * ASoC: Intel: Split hsw_pcm_data for playback and capture
  * ASoC: Intel: initial stream_hw_id to invalid value
  * drm: Fix deadlock due to getconnector locking changes
    - LP: #1440724
  * powerpc/pseries: Little endian fixes for post mobility device tree
    update
    - LP: #1441856
  * powerpc/pseries: Introduce api_version to migration sysfs interface
    - LP: #1441856
  * powerpc/pseries: Simplify check for suspendability during
    suspend/migration
    - LP: #1441856
  * ALSA: hda/realtek - Support headset mode for ALC286/288
    - LP: #1423413
  * ALSA: hda/realtek - Support Dell headset mode for ALC288
    - LP: #1423413
 -- Leann Ogasawara <leann.ogasawara@xxxxxxxxxxxxx>   Thu, 09 Apr 2015 07:35:38 -0700

** Changed in: linux (Ubuntu Vivid)
       Status: In Progress => Fix Released

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2015-2666

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2015-2922

-- 
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https://bugs.launchpad.net/bugs/1440270

Title:
  regression: backlight can't be adjusted on UX32VD with
  3.19.0-12-generic kernel

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Vivid:
  Fix Released

Bug description:
  The keyboard buttons are working as I get the on screen notification.
  But it has no effect on the backlight itself.

  I rebooted and switched back to 3.19.0-11-generic which works fine,
  rebooted and went back to 3.19.0-12-generic and it stopped working
  again, so very confident something broke in the new kernel version.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-12-generic 3.19.0-12.12
  ProcVersionSignature: Ubuntu 3.19.0-12.12-generic 3.19.3
  Uname: Linux 3.19.0-12-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.17-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  snafu109   2549 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Fri Apr  3 21:34:50 2015
  HibernationDevice: RESUME=UUID=4e46a15c-d441-4b34-ae15-a93302da75a5
  InstallationDate: Installed on 2012-12-26 (828 days ago)
  InstallationMedia: Xubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120817.3)
  MachineType: ASUSTeK COMPUTER INC. UX32VD
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-12-generic root=UUID=687d7b6d-6fe2-413c-84c1-ed511edff5f9 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-12-generic N/A
   linux-backports-modules-3.19.0-12-generic  N/A
   linux-firmware                             1.143
  SourcePackage: linux
  UpgradeStatus: Upgraded to vivid on 2015-03-10 (24 days ago)
  dmi.bios.date: 01/29/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: UX32VD.214
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UX32VD
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX32VD.214:bd01/29/2013:svnASUSTeKCOMPUTERINC.:pnUX32VD:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX32VD:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: UX32VD
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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References

[Bug 1440270] [NEW] regression: backlight can't be adjusted on UX32VD with 3.19.0-12-generic kernel
From: Matthew Haughton, 2015-04-04