Public bug reported: This is a system installed with latest stable 12.04.5 image.
The Brightness key will invoke the osd-notify indicator but the display brightness won't change. Verifying the value changing in backlight interface, system are using acpi_video0 instead: Steps to monitor the backlight interfaces: Press the brightness key until maxium indicator shows: ubuntu@201210-11863:/sys/class/backlight$ cat intel_backlight/brightness ; cat acpi_video0/brightness 3407 99 ubuntu@201210-11863:/sys/class/backlight$ Press the brightness key until to minimum indicator shows: ubuntu@201210-11863:/sys/class/backlight$ cat intel_backlight/brightness ; cat acpi_video0/brightness 3407 0 - The workaround found here could solve this issue: http://itsfoss.com/fix-brightness-ubuntu-1310/ - ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+12ubuntu2 ProcVersionSignature: Ubuntu 3.13.0-32.57~precise1-generic 3.13.11.4 Uname: Linux 3.13.0-32-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.0.1-0ubuntu17.6 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] CompositorRunning: compiz Date: Fri Aug 8 03:51:43 2014 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu DkmsStatus: fwts-efi-runtime-dkms, 14.07.00, 3.13.0-32-generic, x86_64: installed ExtraDebuggingInterest: Yes, even including gdb or git bisection work if needed GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:05ba] Advanced Micro Devices, Inc. [AMD/ATI] Mars [Radeon HD 8730M] [1002:6601] (rev ff) (prog-if ff) InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64 (20140807.1) MachineType: Dell Inc. Inspiron 5721 MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic root=UUID=93a24f68-72a1-4335-938a-75f624f57e68 ro quiet splash initcall_debug vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/25/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: A12 dmi.board.name: 0KNF68 dmi.board.vendor: Dell Inc. dmi.board.version: X01 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A12 dmi.modalias: dmi:bvnDellInc.:bvrA12:bd10/25/2013:svnDellInc.:pnInspiron5721:pvrA12:rvnDellInc.:rn0KNF68:rvrX01:cvnDellInc.:ct8:cvrA12: dmi.product.name: Inspiron 5721 dmi.product.version: A12 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.7.12-0ubuntu4 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.52-1~precise1 version.libgl1-mesa-dri: libgl1-mesa-dri N/A version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A ** Affects: linux-lts-trusty (Ubuntu) Importance: Undecided Status: New ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: 201210-11863 amd64 apport-bug compiz-0.9 precise referred-by-support running-unity taipei-lab ubuntu ** Also affects: linux-lts-trusty (Ubuntu) Importance: Undecided Status: New ** Changed in: xorg (Ubuntu) Importance: Critical => Undecided ** Description changed: This is a system installed with latest stable 12.04.5 image. The Brightness key will invoke the osd-notify indicator but the display brightness won't change. Verifying the value changing in backlight interface, system are using acpi_video0 instead: Steps to monitor the backlight interfaces: - Press the brightness key until maxium indicator shows: - ubuntu@201210-11863:/sys/class/backlight$ cat intel_backlight/brightness ; cat acpi_video0/brightness + ubuntu@201210-11863:/sys/class/backlight$ cat intel_backlight/brightness ; cat acpi_video0/brightness 3407 99 ubuntu@201210-11863:/sys/class/backlight$ - Press the brightness key until to minimum indicator shows: - ubuntu@201210-11863:/sys/class/backlight$ cat intel_backlight/brightness ; cat acpi_video0/brightness + ubuntu@201210-11863:/sys/class/backlight$ cat intel_backlight/brightness ; cat acpi_video0/brightness 3407 0 + + + - + + The workaround found here could solve this issue: + http://itsfoss.com/fix-brightness-ubuntu-1310/ + + - ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+12ubuntu2 ProcVersionSignature: Ubuntu 3.13.0-32.57~precise1-generic 3.13.11.4 Uname: Linux 3.13.0-32-generic x86_64 .tmp.unity.support.test.0: - + ApportVersion: 2.0.1-0ubuntu17.6 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] CompositorRunning: compiz Date: Fri Aug 8 03:51:43 2014 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu DkmsStatus: fwts-efi-runtime-dkms, 14.07.00, 3.13.0-32-generic, x86_64: installed ExtraDebuggingInterest: Yes, even including gdb or git bisection work if needed GraphicsCard: - Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) - Subsystem: Dell Device [1028:05ba] - Advanced Micro Devices, Inc. [AMD/ATI] Mars [Radeon HD 8730M] [1002:6601] (rev ff) (prog-if ff) + Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) + Subsystem: Dell Device [1028:05ba] + Advanced Micro Devices, Inc. [AMD/ATI] Mars [Radeon HD 8730M] [1002:6601] (rev ff) (prog-if ff) InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64 (20140807.1) MachineType: Dell Inc. Inspiron 5721 MarkForUpload: True ProcEnviron: - TERM=xterm - PATH=(custom, no user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + TERM=xterm + PATH=(custom, no user) + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic root=UUID=93a24f68-72a1-4335-938a-75f624f57e68 ro quiet splash initcall_debug vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/25/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: A12 dmi.board.name: 0KNF68 dmi.board.vendor: Dell Inc. dmi.board.version: X01 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A12 dmi.modalias: dmi:bvnDellInc.:bvrA12:bd10/25/2013:svnDellInc.:pnInspiron5721:pvrA12:rvnDellInc.:rn0KNF68:rvrX01:cvnDellInc.:ct8:cvrA12: dmi.product.name: Inspiron 5721 dmi.product.version: A12 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.7.12-0ubuntu4 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.52-1~precise1 version.libgl1-mesa-dri: libgl1-mesa-dri N/A version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1354313 Title: [Dell Inspiron 5721] Brightness control does not work with 12.04.5(with kernel 3.13) Status in “linux-lts-trusty” package in Ubuntu: New Status in “xorg” package in Ubuntu: New Bug description: This is a system installed with latest stable 12.04.5 image. The Brightness key will invoke the osd-notify indicator but the display brightness won't change. Verifying the value changing in backlight interface, system are using acpi_video0 instead: Steps to monitor the backlight interfaces: Press the brightness key until maxium indicator shows: ubuntu@201210-11863:/sys/class/backlight$ cat intel_backlight/brightness ; cat acpi_video0/brightness 3407 99 ubuntu@201210-11863:/sys/class/backlight$ Press the brightness key until to minimum indicator shows: ubuntu@201210-11863:/sys/class/backlight$ cat intel_backlight/brightness ; cat acpi_video0/brightness 3407 0 - The workaround found here could solve this issue: http://itsfoss.com/fix-brightness-ubuntu-1310/ - ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+12ubuntu2 ProcVersionSignature: Ubuntu 3.13.0-32.57~precise1-generic 3.13.11.4 Uname: Linux 3.13.0-32-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.0.1-0ubuntu17.6 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] CompositorRunning: compiz Date: Fri Aug 8 03:51:43 2014 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu DkmsStatus: fwts-efi-runtime-dkms, 14.07.00, 3.13.0-32-generic, x86_64: installed ExtraDebuggingInterest: Yes, even including gdb or git bisection work if needed GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:05ba] Advanced Micro Devices, Inc. [AMD/ATI] Mars [Radeon HD 8730M] [1002:6601] (rev ff) (prog-if ff) InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64 (20140807.1) MachineType: Dell Inc. Inspiron 5721 MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic root=UUID=93a24f68-72a1-4335-938a-75f624f57e68 ro quiet splash initcall_debug vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/25/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: A12 dmi.board.name: 0KNF68 dmi.board.vendor: Dell Inc. dmi.board.version: X01 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A12 dmi.modalias: dmi:bvnDellInc.:bvrA12:bd10/25/2013:svnDellInc.:pnInspiron5721:pvrA12:rvnDellInc.:rn0KNF68:rvrX01:cvnDellInc.:ct8:cvrA12: dmi.product.name: Inspiron 5721 dmi.product.version: A12 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.7.12-0ubuntu4 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.52-1~precise1 version.libgl1-mesa-dri: libgl1-mesa-dri N/A version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-trusty/+bug/1354313/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
