I can sense that many users will ask this, so I've FAQed it.

https://libreboot.org/faq/#gm45uneven_backlight

On 08/09/16 03:47, Arthur Heymans wrote:
> Reading this guide:
> https://libreboot.org/docs/misc/index.html#backlight%20control
> You should be able to fix that issue in GNU/linux.
> 
> potato <[email protected]> writes:
> 
>> I think I might have found a bug on the latest release of Libreboot
>> (20160818~20160907).
>>
>> For some reason the left side of the screen gets really dark compared
>> to the right side of the screen when the bright is lowered. If the
>> screen bright is on the max, that does not happen. On the 20150518
>> version of Libreboot this error does not happen.
>>
>> The error happen on the X200, using the vesa framebuffer.
>>
>> (sorry if my english sounds a little weird)
>>
>> Potato
>>
> <#secure method=pgpmime mode=sign>
> 

-- 
Leah Rowe

Libreboot developer

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