screen brightness can be adjusted since Linux kernel 3 seems kamals changes made it into the main kernel
-- Tony Diep | 416 537 2225 On Oct 25, 2011, at 12:05 AM, Idonmez-l <[email protected]> wrote: > Does booting with the > > acpi_backlight=vendor > > grub option makes any difference? > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/573984 > > Title: > Screen brightness can not be adjusted in Lucid with Intel Arrandale > graphics > > Status in “linux” package in Ubuntu: > Confirmed > Status in openSUSE: > Incomplete > > Bug description: > PROBLEM > Hot keys for adjusting screen brightness do not work in Karmic or Lucid for > Gateway NV59 laptop with Arrandale Graphics. > Under Karmic, workaround was to adjust screen brightness while still in BIOS > post. > Karmic would boot with the selected screen brightness > > Under Lucid, screen brightness goes to 100% when booting, ignoring > brightness set during boot. > Hot keys for adjusting brightness do not work. > > RESULTS > Tried the following: > > * Setting memory directly under /proc > Results: memory for VGA brightness would change but display wouldn't > actually change > > CHANGING BOOT PARAMETERS: > > # GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nolapic acpi_backlight=vendor" > # above line doesn't solve problem > # GRUB_CMDLINE_LINUX="acpi=off" > # above line allows screen brightness but hyperthreading is off > GRUB_CMDLINE_LINUX="acpi=ht" > # above line allows screen brightness adjustment at cost of power, core temp? > # GRUB_CMDLINE_LINUX="acpi_generic_hotkey" > # above line doesn't solve screen brightness problem > # GRUB_CMDLINE_LINUX="acpi=strict" > # above line does not solve screen brightness problem > # GRUB_CMDLINE_LINUX="acpi_osi=Linux" > # above line does not solve screen brightness problem > # GRUB_CMDLINE_LINUX="acpi=noirq" > # above line doesn't solve > # GRUB_CMDLINE_LINUX="acpi=noacpi" > # above line does not allow screen brightness adjustment > # GRUB_CMDLINE_LINUX="acpi_backlight=vendor" > # above line does not work > # GRUB_CMDLINE_LINUX="i915.modeset=0" > # above line make linux unbootable. Have to book off USB/CD and manually > edit grub.conf > > BEST WORKAROUND > GRUB_CMDLINE_LINUX="acpi=ht" > # above line allows screen brightness adjustment at cost of power, core temp? > > Linux tdlap6 2.6.32-21-generic #32-Ubuntu SMP Fri Apr 16 08:09:38 UTC > 2010 x86_64 GNU/Linux > > ProblemType: Bug > DistroRelease: Ubuntu 10.04 > Package: linux-image-2.6.32-21-generic 2.6.32-21.32 > Regression: Yes > Reproducible: Yes > ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2 > Uname: Linux 2.6.32-21-generic x86_64 > AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21. > Architecture: amd64 > ArecordDevices: > **** List of CAPTURE Hardware Devices **** > card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog] > Subdevices: 1/1 > Subdevice #0: subdevice #0 > AudioDevicesInUse: > USER PID ACCESS COMMAND > /dev/snd/controlC0: tonydiep 1621 F.... pulseaudio > CRDA: Error: [Errno 2] No such file or directory > Card0.Amixer.info: > Card hw:0 'Intel'/'HDA Intel at 0xf0800000 irq 22' > Mixer name : 'Intel G45 DEVIBX' > Components : 'HDA:10ec0272,1025033d,00100001 > HDA:14f12c06,10250093,00100000 HDA:80862804,80860101,00100000' > Controls : 26 > Simple ctrls : 13 > Date: Sun May 2 16:39:17 2010 > HibernationDevice: RESUME=/dev/sda5 > InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429) > MachineType: Gateway NV59 > ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-21-generic > root=UUID=53103199-f27c-4ef8-879c-bf122b4216fe ro acpi=ht quiet splash > ProcEnviron: > LANG=en_CA.utf8 > SHELL=/bin/bash > RelatedPackageVersions: linux-firmware 1.34 > RfKill: > 0: phy0: Wireless LAN > Soft blocked: no > Hard blocked: no > SourcePackage: linux > dmi.bios.date: 11/26/2009 > dmi.bios.vendor: Phoenix Technologies LTD > dmi.bios.version: V1.09 > dmi.board.name: NV59 > dmi.board.vendor: Gateway > dmi.board.version: Rev > dmi.chassis.asset.tag: No Asset Tag > dmi.chassis.type: 10 > dmi.chassis.vendor: Gateway > dmi.chassis.version: Rev > dmi.modalias: > dmi:bvnPhoenixTechnologiesLTD:bvrV1.09:bd11/26/2009:svnGateway:pnNV59:pvrRev:rvnGateway:rnNV59:rvrRev:cvnGateway:ct10:cvrRev: > dmi.product.name: NV59 > dmi.product.version: Rev > dmi.sys.vendor: Gateway > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/573984/+subscriptions -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/573984 Title: Screen brightness can not be adjusted in Lucid with Intel Arrandale graphics To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/573984/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
