Mark, as per http://support.lenovo.com/us/en/products/laptops-and- netbooks/thinkpad-edge-laptops/thinkpad-edge-e330 an update to your computer's buggy and outdated BIOS is available (1.12). 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, if the problem is still reproducible, and the information above is provided, then please mark this report Status Confirmed. Otherwise, please mark this as Invalid. Thank you for your understanding. -- 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/1486896 Title: On Lenovo Thinkpad Edge E330, the screen backlight flickers badly. Status in linux package in Ubuntu: Incomplete Bug description: Behavior is the same on Ubuntu 14.04 -- 15.04. Steps were taken according to this: https://wiki.ubuntu.com/Kernel/Debugging/Backlight With acpi_backlight=vendor, the flicker stops, and the brightness control doesn't work. However, echo 8 > /sys/class/backlight/intel_backlight/brightness dims the screen. thinkpad-acpi.brightness_enable = 1 does nothing. Workaround: If no changes are made to boot options, and echo 4437 > /sys/class/backlight/intel_backlight/brightness is done, the flicker stops and the GUI control / acpi_video0 works, but causes flicker again. Attaching the necessary files. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-26-generic 3.19.0-26.28 ProcVersionSignature: Ubuntu 3.19.0-26.28-generic 3.19.8-ckt4 Uname: Linux 3.19.0-26-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mark 1391 F.... pulseaudio CurrentDesktop: Unity Date: Thu Aug 20 11:21:39 2015 HibernationDevice: RESUME=UUID=7a9e1f17-c57b-4e6f-bb0c-0b090b5d1405 InstallationDate: Installed on 2014-08-22 (363 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: LENOVO 3354DGG ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-26-generic root=UUID=b566feb2-5a5c-4573-8782-b78d130dbc45 ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.19.0-26-generic N/A linux-backports-modules-3.19.0-26-generic N/A linux-firmware 1.143.3 SourcePackage: linux UpgradeStatus: Upgraded to vivid on 2015-08-20 (0 days ago) dmi.bios.date: 02/25/2013 dmi.bios.vendor: LENOVO dmi.bios.version: H3ET72WW(1.09) dmi.board.asset.tag: Not Available dmi.board.name: 3354DGG dmi.board.vendor: LENOVO dmi.board.version: 0B98409 Std dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrH3ET72WW(1.09):bd02/25/2013:svnLENOVO:pn3354DGG:pvrThinkPadEdgeE330:rvnLENOVO:rn3354DGG:rvr0B98409Std:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 3354DGG dmi.product.version: ThinkPad Edge E330 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1486896/+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
