Comment 23 for bug 1768208

Sorry. 16.04 not 16.10. I am on the LTS version

Best Regards
Marvin Rueppel

Mobile: +41 (0) 79 339 1121
Email : <email address hidden>

On Thu, May 24, 2018 at 3:47 PM, Marvin Rueppel <email address hidden> wrote:

> ok. Now Im on my 16.10 system again.
>
> 1. this is the comand I use for 70% it also works for numbers higher than
> 1 down to 0
>
> xrandr --output eDP-1 --brightness 0.7
>
> for this current system
> Linux X1-16 4.13.0-43-generic #48~16.04.1-Ubuntu SMP Thu May 17 12:56:46
> UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
>
> I have not used it prior to 16.10 but I think it worked. All systems newer
> than 16.10 so far failed to Support my screen.
>
> something like this discussion.
> https://forums.lenovo.com/t5/Linux-Discussion/X-1-Yoga-
> OLED-brightness-control-under-linux/td-p/3948282
> https://ubuntuforums.org/showthread.php?t=2337478
>
> This looks like a solution to me, but I have not tried it because before
> ubuntu 18 there was several other issues that made it unrunnable on my
> machine.
> https://github.com/udifuchs/icc-brightness
>
> 3) thx. what would you change it to then? Or leave it empty? Its my first
> real bug report and I am happy to help.
>
>
>
> Best Regards
> Marvin Rueppel
>
> Mobile: +41 (0) 79 339 1121
> Email : <email address hidden>
>
> On Wed, May 23, 2018 at 6:39 PM, Christopher M. Penalver <
> <email address hidden>> wrote:
>
>> marvin:
>>
>> 1) When you state "I could only adjust it with the terminal and xrandr",
>> what terminal command and what do you do with xrandr precisely?
>>
>> 2) To clarify, were you able to adjust the screen brightness prior to
>> Ubuntu 16.10? If so, which specifically and how?
>>
>> 3) To advise, when changing the Status you don't have to change the
>> Target Package as linux is a reasonable culprit. Having an empty Package
>> when changing Status is for reports where the the root cause package
>> isn't known, and nobody has any idea what to do with it.
>>
>> ** Package changed: ubuntu => linux (Ubuntu)
>>
>> ** Changed in: linux (Ubuntu)
>> Status: Confirmed => Incomplete
>>
>> ** Summary changed:
>>
>> - OLED X1 yoga lenove, screen ubuntu, brightness issue
>> + [Lenovo ThinkPad X1 Yoga 1st Gen] Can't change brightness
>>
>> ** Tags removed: regression-potential
>> ** Tags added: kernel-bug-exists-upstream kernel-bug-exists-upstream-v4.17-rc6
>> regression-release
>>
>> --
>> You received this bug notification because you are subscribed to the bug
>> report.
>> https://bugs.launchpad.net/bugs/1768208
>>
>> Title:
>> [Lenovo ThinkPad X1 Yoga 1st Gen] Can't change brightness
>>
>> Status in linux package in Ubuntu:
>> Incomplete
>>
>> Bug description:
>> As with all the proceeding distros from ubuntu 16.10 the brightness of
>> the OLED screen canot be set. Since xrander is no more present there is
>> also no hack around this problem anymore. This bug is a killer for using
>> the system as full brightness drains the battery quickly.
>> OLED screens have no backlight, thus this might be the issue.
>>
>> ProblemType: Bug
>> DistroRelease: Ubuntu 18.04
>> Package: linux-image-4.15.0-20-generic 4.15.0-20.21
>> ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
>> Uname: Linux 4.15.0-20-generic x86_64
>> ApportVersion: 2.20.9-0ubuntu7
>> Architecture: amd64
>> CurrentDesktop: ubuntu:GNOME
>> Date: Tue May 1 10:45:56 2018
>> SourcePackage: linux-signed
>> UpgradeStatus: No upgrade log present (probably fresh install)
>> ---
>> ApportVersion: 2.20.9-0ubuntu7
>> Architecture: amd64
>> AudioDevicesInUse:
>> USER PID ACCESS COMMAND
>> /dev/snd/controlC0: marvin 1768 F.... pulseaudio
>> CurrentDesktop: ubuntu:GNOME
>> DistroRelease: Ubuntu 18.04
>> HibernationDevice: RESUME=UUID=e81e811a-12aa-465d-ba3c-77e34b171b69
>> MachineType: LENOVO 20FRS2M600
>> Package: linux (not installed)
>> ProcFB: 0 inteldrmfb
>> ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz root=/dev/nvme0n1p1
>> ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
>> RelatedPackageVersions:
>> linux-restricted-modules-4.15.0-20-generic N/A
>> linux-backports-modules-4.15.0-20-generic N/A
>> linux-firmware 1.173
>> Tags: bionic
>> Uname: Linux 4.15.0-20-generic x86_64
>> UpgradeStatus: No upgrade log present (probably fresh install)
>> UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
>> _MarkForUpload: True
>> dmi.bios.date: 06/23/2016
>> dmi.bios.vendor: LENOVO
>> dmi.bios.version: N1FET41W (1.15 )
>> dmi.board.asset.tag: Not Available
>> dmi.board.name: 20FRS2M600
>> dmi.board.vendor: LENOVO
>> dmi.board.version: Not Defined
>> dmi.chassis.asset.tag: No Asset Information
>> dmi.chassis.type: 10
>> dmi.chassis.vendor: LENOVO
>> dmi.chassis.version: None
>> dmi.modalias: dmi:bvnLENOVO:bvrN1FET41W(1.15
>> ):bd06/23/2016:svnLENOVO:pn20FRS2M600:pvrThinkPadX1Yoga1st:r
>> vnLENOVO:rn20FRS2M600:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
>> dmi.product.family: ThinkPad X1 Yoga 1st
>> dmi.product.name: 20FRS2M600
>> dmi.product.version: ThinkPad X1 Yoga 1st
>> dmi.sys.vendor: LENOVO
>>
>> To manage notifications about this bug go to:
>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1768208
>> /+subscriptions
>>
>
>