Marius B. Kotsbak, thank you for reporting this and helping make Ubuntu better. As per http://www.dell.com/support/home/us/en/19/product- support/product/precision-m4800-workstation/drivers an update to your computer's buggy and outdated BIOS is available (A13). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?
If it doesn't, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report. Once the BIOS is updated, and the information above is provided, then please mark this report Status New. Thank you for your understanding. ** Tags added: bios-outdated-a13 ** No longer affects: linux (Ubuntu) ** No longer affects: xorg (Ubuntu) ** Changed in: nvidia-graphics-drivers-346-updates (Ubuntu) Status: Confirmed => Incomplete -- 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/1452173 Title: [Dell Precision M4800] Regression: screen brightness control broken in 15.04 Status in nvidia-graphics-drivers-346-updates package in Ubuntu: Incomplete Bug description: In Ubuntu 15.04, I no longer am able to control the screen brightness. See possible similar bug #1411514 for 14.04.1. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: xorg 1:7.7+7ubuntu4 ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3 Uname: Linux 3.19.0-16-generic x86_64 NonfreeKernelModules: nvidia .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 346.59 Tue Mar 31 14:10:31 PDT 2015 GCC version: gcc version 4.9.2 (Ubuntu 4.9.2-10ubuntu13) ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CurrentDesktop: Date: Wed May 6 10:12:03 2015 DistUpgraded: 2015-04-24 01:12:19,566 DEBUG enabling apt cron job DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-precise-amd64-20130203-1 DistroCodename: vivid DistroVariant: ubuntu EcryptfsInUse: Yes GraphicsCard: NVIDIA Corporation GK106GLM [Quadro K2100M] [10de:11fc] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:05cc] InstallationDate: Installed on 2014-03-12 (419 days ago) InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20130203-13:50 MachineType: Dell Inc. Precision M4800 PlymouthDebug: Error: [Errno 13] Permission denied: '/var/log/plymouth-debug.log' ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-16-generic.efi.signed root=UUID=61c860cd-d55d-4e70-85a3-615b677b5811 ro nomodeset=1 splash quiet plymouth:debug=1 SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to vivid on 2015-04-23 (12 days ago) dmi.bios.date: 12/03/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A11 dmi.board.name: 077KCT dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA11:bd12/03/2014:svnDellInc.:pnPrecisionM4800:pvr01:rvnDellInc.:rn077KCT:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Precision M4800 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.60-2 version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1 version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1 xserver.bootTime: Tue May 5 22:22:48 2015 xserver.configfile: default xserver.errors: open /dev/fb0: No such file or directory xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.17.1-0ubuntu3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-346-updates/+bug/1452173/+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
