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  1. Bug #1098216
  2. Comment #121

Comment 121 for bug 1098216

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Tabris (theangeltabris) wrote : Re: [Bug 1098216] Re: Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and X1 Carbon

I'm using a E49 and still not working without adding parameters.

On Mon, Jan 6, 2014 at 12:11 PM, Anthony Wong
<email address hidden> wrote:
> The "missing brightness level" problem can be worked around by using the
> kernel parameter video.brightness_switch_enabled=0.
>
> Add the param to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub, then
> run 'sudo update-grub' and reboot.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1098216
>
> Title:
> Regression in brightness control on Lenovo Thinkpad X230 (+tablet) and
> X1 Carbon
>
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