** Description changed: + Overview - + + This bug affects many Toshiba laptops including R700, R705, R800, R830, + R835, and R840 models - please update this description if your model is + also affected, but make sure the symptoms match exactly. + + The symptoms are that brightness control operates normally when the + system is first booted, but after a suspend-to-RAM and resume cycle the + brightness controls have no effect. + + After a normal reboot, or hibernate & resume cycle, the brightness + controls operate normally again. + + This bug is tracked for the kernel at: + + http://bugzilla.kernel.org/show_bug.cgi?id=21012 + + And for Debian at: + + http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=599768 + + Please try to keep all info together and pass any progress to the + upstream trackers. + + + Original report for #935778 follows: + On my Toshiba R840, the brightness controls work fine on first boot, but do nothing after suspend/resume. This is particularly frustrating if I suspend with the screen at all dimmed, because once I resume, I have no way of increasing the brightness short of a reboot. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-generic 3.2.0.16.16 ProcVersionSignature: Ubuntu 3.2.0-16.25-generic 3.2.6 Uname: Linux 3.2.0-16-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.91-0ubuntu1 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: james 2251 F.... pulseaudio - /dev/snd/pcmC0D0p: james 2251 F...m pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: james 2251 F.... pulseaudio + /dev/snd/pcmC0D0p: james 2251 F...m pulseaudio CRDA: - country EU: - (2402 - 2482 @ 40), (N/A, 20) - (5170 - 5250 @ 40), (N/A, 20) - (5250 - 5330 @ 40), (N/A, 20), DFS - (5490 - 5710 @ 40), (N/A, 27), DFS + country EU: + (2402 - 2482 @ 40), (N/A, 20) + (5170 - 5250 @ 40), (N/A, 20) + (5250 - 5330 @ 40), (N/A, 20), DFS + (5490 - 5710 @ 40), (N/A, 27), DFS Card0.Amixer.info: - Card hw:0 'PCH'/'HDA Intel PCH at 0xc4820000 irq 50' - Mixer name : 'Intel CougarPoint HDMI' - Components : 'HDA:10ec0269,1179062a,00100100 HDA:80862805,11790001,00100000' - Controls : 30 - Simple ctrls : 12 + Card hw:0 'PCH'/'HDA Intel PCH at 0xc4820000 irq 50' + Mixer name : 'Intel CougarPoint HDMI' + Components : 'HDA:10ec0269,1179062a,00100100 HDA:80862805,11790001,00100000' + Controls : 30 + Simple ctrls : 12 Date: Sat Feb 18 21:27:12 2012 EcryptfsInUse: Yes InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) MachineType: TOSHIBA TECRA R840 ProcEnviron: - LANGUAGE=en_GB:en - PATH=(custom, no user) - LANG=en_GB.UTF-8 - SHELL=/bin/bash + LANGUAGE=en_GB:en + PATH=(custom, no user) + LANG=en_GB.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-16-generic root=UUID=16b08eff-30c4-4fe0-bede-cf8cb31270bf ro quiet splash vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-3.2.0-16-generic N/A - linux-backports-modules-3.2.0-16-generic N/A - linux-firmware 1.69 + linux-restricted-modules-3.2.0-16-generic N/A + linux-backports-modules-3.2.0-16-generic N/A + linux-firmware 1.69 RfKill: - 0: phy0: Wireless LAN - Soft blocked: no - Hard blocked: no + 0: phy0: Wireless LAN + Soft blocked: no + Hard blocked: no SourcePackage: linux StagingDrivers: mei UpgradeStatus: Upgraded to precise on 2012-01-09 (39 days ago) dmi.bios.date: 07/12/2011 dmi.bios.vendor: TOSHIBA dmi.bios.version: Version 2.90 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:bvrVersion2.90:bd07/12/2011:svnTOSHIBA:pnTECRAR840:pvrPT42GE-00N006EN:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0: dmi.product.name: TECRA R840 dmi.product.version: PT42GE-00N006EN 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/935778 Title: Various Toshiba laptops - brightness controls work on first boot, but do nothing after suspend/resume to RAM. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/935778/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
