To do, thank you for providing the requested information. Could you please test the latest upstream kernel available (v3.10-rc1) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the kernel in the mainline kernels archive directory daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags: kernel-fixed-upstream kernel-fixed-upstream-VERSION-NUMBER
where VERSION-NUMBER is the version number of the kernel you tested. For example: kernel-fixed-upstream-v3.10-rc1 This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag: needs-upstream-testing If the mainline kernel does not fix this bug, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-VERSION-NUMBER As well, please remove the tag: needs-upstream-testing If you are unable to test the mainline kernel, please comment as to why specifically you were unable to test it and add the following tags: kernel-unable-to-test-upstream kernel-unable-to-test-upstream-VERSION-NUMBER Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Tags added: latest-bios-3.9 ** Tags removed: needs-computer-model ** Tags added: lucid ** Tags removed: lucid ** Description changed: On my Toshiba Satellite R830, I have 12.10 AMD64. The Fn + F6, Fn + F7 buttons reduce/increase the brightness level of the screen. The issue is that they stop working after waking my computer from sleep. When this happens I cannot even control brightness by going to "System Settings/Brightness and Lock". I had Ubuntu 12.04 installed before and I had the same identical problem. Now I installed the upstream kernel 3.7rc5 and the situation is even worse, because on wakeup, the brightness is at 100% whereas on the standard kernel it remembers the brightness value. WORKAROUND: I modified /etc/default/grub changing the line: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux acpi_backlight=vendor" Then updated grub with: sudo update-grub and the problem is solved. WORKAROUND: As root (not with sudo but actually changing user: su root), change the value in sys/class/backlight/intel_backlight/brightness . For instance: echo 2937 > /sys/class/backlight/intel_backlight/brightness or better still: echo 300 | sudo tee /sys/class/backlight/intel_backlight/brightness > /dev/null These values are not between 0 and 7 (as the ones in the other directory), but between 284 and 4539, or something like that. Source is http://askubuntu.com/a/196863/27968 . + + WORKAROUND: In Raring: + echo 400 | sudo tee /sys/class/backlight/intel_backlight/brightness ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-32-generic 3.2.0-32.51 ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30 Uname: Linux 3.2.0-32-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu14 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: chris 1801 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xc4820000 irq 49' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:10ec0269,1179062e,00100100 HDA:80862805,11790001,00100000' Controls : 25 Simple ctrls : 12 Date: Sat Oct 20 19:04:25 2012 HibernationDevice: RESUME=UUID=7d4873fc-c21f-4172-977f-2fb7c1667f24 InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1) MachineType: TOSHIBA SATELLITE R830 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-32-generic root=UUID=4ad29e86-825e-4c7c-b220-5eab7199b9e2 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.2.0-32-generic N/A linux-backports-modules-3.2.0-32-generic N/A linux-firmware 1.79.1 SourcePackage: linux StagingDrivers: mei UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/31/2012 dmi.bios.vendor: TOSHIBA dmi.bios.version: Version 3.90 dmi.board.asset.tag: 0000000000 dmi.board.name: Portable PC dmi.board.vendor: TOSHIBA dmi.board.version: Version A0 dmi.chassis.asset.tag: 0000000000 dmi.chassis.type: 10 dmi.chassis.vendor: TOSHIBA dmi.chassis.version: Version 1.0 dmi.modalias: dmi:bvnTOSHIBA:bvrVersion3.90:bd07/31/2012:svnTOSHIBA:pnSATELLITER830:pvrPT32LE-01Y00DFR:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0: dmi.product.name: SATELLITE R830 dmi.product.version: PT32LE-01Y00DFR dmi.sys.vendor: TOSHIBA --- ApportVersion: 2.6.1-0ubuntu6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: chris 2074 F.... pulseaudio /dev/snd/pcmC0D0c: chris 2074 F...m pulseaudio /dev/snd/pcmC0D0p: chris 2074 F...m pulseaudio DistroRelease: Ubuntu 12.10 HibernationDevice: RESUME=UUID=7d4873fc-c21f-4172-977f-2fb7c1667f24 InstallationDate: Installed on 2012-09-19 (54 days ago) InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1) MachineType: TOSHIBA SATELLITE R830 MarkForUpload: True Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-18-generic root=UUID=4ad29e86-825e-4c7c-b220-5eab7199b9e2 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7 RelatedPackageVersions: linux-restricted-modules-3.5.0-18-generic N/A linux-backports-modules-3.5.0-18-generic N/A linux-firmware 1.95 Tags: quantal running-unity Uname: Linux 3.5.0-18-generic x86_64 UpgradeStatus: Upgraded to quantal on 2012-10-23 (20 days ago) UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo dmi.bios.date: 07/31/2012 dmi.bios.vendor: TOSHIBA dmi.bios.version: Version 3.90 dmi.board.asset.tag: 0000000000 dmi.board.name: Portable PC dmi.board.vendor: TOSHIBA dmi.board.version: Version A0 dmi.chassis.asset.tag: 0000000000 dmi.chassis.type: 10 dmi.chassis.vendor: TOSHIBA dmi.chassis.version: Version 1.0 dmi.modalias: dmi:bvnTOSHIBA:bvrVersion3.90:bd07/31/2012:svnTOSHIBA:pnSATELLITER830:pvrPT32LE-01Y00DFR:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0: dmi.product.name: SATELLITE R830 dmi.product.version: PT32LE-01Y00DFR dmi.sys.vendor: TOSHIBA -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1069144 Title: [Toshiba Satellite R830] brightness control works until sleep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1069144/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
