The BIOS update by Toshiba does not report to fix anything display related, so our internal IT does not allow me to update the BIOS. Besides, various Windows versions do not have this problem (there are other display issues on Windows, but a BIOS update is not allowed unless its changelog refers to changes regarding the internal display). Is there anything else I can do to fix this?
** Changed in: linux (Ubuntu) Status: Expired => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1178205 Title: [Toshiba Tecra R850-19Z] Screen brightness not changable via applet or hotkeys in Ubuntu 12.04 Status in “linux” package in Ubuntu: Confirmed Bug description: By default the screen is very dark and almost unreadable. The Fn+F6/7 hotkeys show the brightness applet but don't change the brightness. Attached info according to https://wiki.ubuntu.com/Kernel/Debugging/Backlight below. WORKAROUND: acpi_backlight=vendor ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-41-generic-pae 3.2.0-41.66 ProcVersionSignature: Ubuntu 3.2.0-41.66-generic-pae 3.2.42 Uname: Linux 3.2.0-41-generic-pae i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu17.2 Architecture: i386 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: ubuntu 1655 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xc4820000 irq 50' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:10ec0269,11790628,00100100 HDA:80862805,11790001,00100000' Controls : 29 Simple ctrls : 11 Date: Thu May 9 12:14:51 2013 HibernationDevice: RESUME=UUID=add8fe24-1f1e-4ca7-a2d6-a0f40c03383f InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423) MachineType: TOSHIBA TECRA R850 MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=de_DE.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-41-generic-pae root=UUID=ffc754ea-32ed-4ae7-b471-bca82bd54afb ro elevator=deadline quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.2.0-41-generic-pae N/A linux-backports-modules-3.2.0-41-generic-pae N/A linux-firmware 1.79.4 SourcePackage: linux StagingDrivers: mei UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/25/2011 dmi.bios.vendor: TOSHIBA dmi.bios.version: Version 3.10 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:bvrVersion3.10:bd08/25/2011:svnTOSHIBA:pnTECRAR850:pvrPT525E-043021GH:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0: dmi.product.name: TECRA R850 dmi.product.version: PT525E-043021GH dmi.sys.vendor: TOSHIBA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1178205/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp