Comment 4 for bug 1221790

This didn't used to happen. I believe it started with the 3.11 kernel
since there is new code in that area. I will try installing 3.10 and
some early 3.11 RCs and see where I land. I know where to get the
earlier kernel packages (kernel team PPA) but how do I interrupt the
boot process to tell ubuntu to run an older release. Everything is
masked by the "Ubuntu" logo boot now.

On 6 September 2013 11:47, Joseph Salisbury
<email address hidden> wrote:
> Did this issue start happening after an update/upgrade? Was there a
> kernel version where you were not having this particular problem? This
> will help determine if the problem you are seeing is the result of the
> introduction of a regression, and when this regression was introduced.
> If this is a regression, we can perform a kernel bisect to identify the
> commit that introduced the problem.
>
> ** Changed in: linux (Ubuntu)
> Importance: Undecided => Medium
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1221790
>
> Title:
> Screen brightness is maximum upon fresh boot
>
> Status in “linux” package in Ubuntu:
> Confirmed
>
> Bug description:
> Hello,
>
> Trouble: Everytime I restart or cold boot my Thinkpad X1 laptop, my
> screen brightness is set to maximum.
>
> Expected Behaviour: Brighteness setting is retained between reboots
>
> My laptop uses UEFI.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 13.10
> Package: linux-image-3.11.0-4-generic 3.11.0-4.9
> ProcVersionSignature: Ubuntu 3.11.0-4.9-generic 3.11.0-rc7
> Uname: Linux 3.11.0-4-generic x86_64
> ApportVersion: 2.12.1-0ubuntu3
> Architecture: amd64
> AudioDevicesInUse:
> USER PID ACCESS COMMAND
> /dev/snd/controlC0: anmar 1798 F.... pulseaudio
> Date: Fri Sep 6 11:20:05 2013
> HibernationDevice: RESUME=UUID=2e39ee55-2a87-4298-a2d0-1c8ef5de5a96
> InstallationDate: Installed on 2013-08-09 (27 days ago)
> InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130809)
> MachineType: LENOVO 3443CTO
> MarkForUpload: True
> ProcFB: 0 inteldrmfb
> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-4-generic.efi.signed root=UUID=1784df7c-8b5f-4550-84f2-13e73c2915fe ro quiet splash vt.handoff=7
> RelatedPackageVersions:
> linux-restricted-modules-3.11.0-4-generic N/A
> linux-backports-modules-3.11.0-4-generic N/A
> linux-firmware 1.113
> SourcePackage: linux
> UpgradeStatus: No upgrade log present (probably fresh install)
> dmi.bios.date: 04/29/2013
> dmi.bios.vendor: LENOVO
> dmi.bios.version: G6ET96WW (2.56 )
> dmi.board.asset.tag: Not Available
> dmi.board.name: 3443CTO
> dmi.board.vendor: LENOVO
> dmi.board.version: Win8 STD DPK TPG
> dmi.chassis.asset.tag: No Asset Information
> dmi.chassis.type: 10
> dmi.chassis.vendor: LENOVO
> dmi.chassis.version: Not Available
> dmi.modalias: dmi:bvnLENOVO:bvrG6ET96WW(2.56):bd04/29/2013:svnLENOVO:pn3443CTO:pvrThinkPadX1Carbon:rvnLENOVO:rn3443CTO:rvrWin8STDDPKTPG:cvnLENOVO:ct10:cvrNotAvailable:
> dmi.product.name: 3443CTO
> dmi.product.version: ThinkPad X1 Carbon
> dmi.sys.vendor: LENOVO
>
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