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[Bug 1577702] [NEW] Lenovo Y510p Backlight control not changing backlight

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Public bug reported:

Potentially the same bug as #1258058 however it was closed due to
inactivity

the backlight controls worked fine under Kubuntu

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-21-generic 4.4.0-21.37 [modified: boot/vmlinuz-4.4.0-21-generic]
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  aj         2104 F.... pulseaudio
 /dev/snd/controlC0:  aj         2104 F.... pulseaudio
CurrentDesktop: GNOME
Date: Tue May  3 02:41:42 2016
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=5a28597e-d4c1-4c0f-aae4-1c674f67e436
InstallationDate: Installed on 2016-05-03 (0 days ago)
InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64 (20160421)
MachineType: LENOVO 20217
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 EFI VGA
ProcKernelCmdLine: \vmlinuz-4.4.0-21-generic.efi.signed root=UUID=f78854ef-3876-45cd-90c6-d67a77af7a32 ro rootflags=subvol=@ quiet splash vt.handoff=7 initrd=\initrd.img-4.4.0-21-generic
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-21-generic N/A
 linux-backports-modules-4.4.0-21-generic  N/A
 linux-firmware                            1.157
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 1/30/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: 74CN47WW(V3.08)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: VIQY0Y1
dmi.board.vendor: LENOVO
dmi.board.version: 31900058STD
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo IdeaPad Y510P
dmi.modalias: dmi:bvnLENOVO:bvr74CN47WW(V3.08):bd1/30/2015:svnLENOVO:pn20217:pvrLenovoIdeaPadY510P:rvnLENOVO:rnVIQY0Y1:rvr31900058STD:cvnLENOVO:ct10:cvrLenovoIdeaPadY510P:
dmi.product.name: 20217
dmi.product.version: Lenovo IdeaPad Y510P
dmi.sys.vendor: LENOVO

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


** Tags: amd64 apport-bug xenial

** Description changed:

- Potentially the same bug as 1258058
+ Potentially the same bug as #1258058 however it was closed due to
+ inactivity
  
  the backlight controls worked fine under Kubuntu
  
  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-21-generic 4.4.0-21.37 [modified: boot/vmlinuz-4.4.0-21-generic]
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC1:  aj         2104 F.... pulseaudio
-  /dev/snd/controlC0:  aj         2104 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC1:  aj         2104 F.... pulseaudio
+  /dev/snd/controlC0:  aj         2104 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Tue May  3 02:41:42 2016
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=5a28597e-d4c1-4c0f-aae4-1c674f67e436
  InstallationDate: Installed on 2016-05-03 (0 days ago)
  InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64 (20160421)
  MachineType: LENOVO 20217
  ProcEnviron:
-  TERM=xterm-256color
-  PATH=(custom, no user)
-  XDG_RUNTIME_DIR=<set>
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  TERM=xterm-256color
+  PATH=(custom, no user)
+  XDG_RUNTIME_DIR=<set>
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: \vmlinuz-4.4.0-21-generic.efi.signed root=UUID=f78854ef-3876-45cd-90c6-d67a77af7a32 ro rootflags=subvol=@ quiet splash vt.handoff=7 initrd=\initrd.img-4.4.0-21-generic
  RelatedPackageVersions:
-  linux-restricted-modules-4.4.0-21-generic N/A
-  linux-backports-modules-4.4.0-21-generic  N/A
-  linux-firmware                            1.157
+  linux-restricted-modules-4.4.0-21-generic N/A
+  linux-backports-modules-4.4.0-21-generic  N/A
+  linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 1/30/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 74CN47WW(V3.08)
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: VIQY0Y1
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900058STD
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo IdeaPad Y510P
  dmi.modalias: dmi:bvnLENOVO:bvr74CN47WW(V3.08):bd1/30/2015:svnLENOVO:pn20217:pvrLenovoIdeaPadY510P:rvnLENOVO:rnVIQY0Y1:rvr31900058STD:cvnLENOVO:ct10:cvrLenovoIdeaPadY510P:
  dmi.product.name: 20217
  dmi.product.version: Lenovo IdeaPad Y510P
  dmi.sys.vendor: LENOVO

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https://bugs.launchpad.net/bugs/1577702

Title:
  Lenovo Y510p Backlight control not changing backlight

Status in linux package in Ubuntu:
  New

Bug description:
  Potentially the same bug as #1258058 however it was closed due to
  inactivity

  the backlight controls worked fine under Kubuntu

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-21-generic 4.4.0-21.37 [modified: boot/vmlinuz-4.4.0-21-generic]
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  aj         2104 F.... pulseaudio
   /dev/snd/controlC0:  aj         2104 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Tue May  3 02:41:42 2016
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=5a28597e-d4c1-4c0f-aae4-1c674f67e436
  InstallationDate: Installed on 2016-05-03 (0 days ago)
  InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64 (20160421)
  MachineType: LENOVO 20217
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: \vmlinuz-4.4.0-21-generic.efi.signed root=UUID=f78854ef-3876-45cd-90c6-d67a77af7a32 ro rootflags=subvol=@ quiet splash vt.handoff=7 initrd=\initrd.img-4.4.0-21-generic
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-21-generic N/A
   linux-backports-modules-4.4.0-21-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 1/30/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 74CN47WW(V3.08)
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: VIQY0Y1
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900058STD
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo IdeaPad Y510P
  dmi.modalias: dmi:bvnLENOVO:bvr74CN47WW(V3.08):bd1/30/2015:svnLENOVO:pn20217:pvrLenovoIdeaPadY510P:rvnLENOVO:rnVIQY0Y1:rvr31900058STD:cvnLENOVO:ct10:cvrLenovoIdeaPadY510P:
  dmi.product.name: 20217
  dmi.product.version: Lenovo IdeaPad Y510P
  dmi.sys.vendor: LENOVO

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