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Date: Sun, 22 Mar 2015 14:30:17 +0200
From: Stefan Parvu <sparvu@kronometrix.org>
To: Henry Hu <henry.hu.sh@gmail.com>
Subject: Re: Xorg dri2 after r277486 on Asus Zenbook
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Thank you. 

> It's possible that you hit the problem of brightness.
> Recently, after X starts up, the brightness is 0. It's discussed in a mail
> titled
> r277959 breaks X display on IvyBridge mobile GT2 IG
> I also has this problem.
> You can try:
> * plug in an external monitor
> * ssh into the machine, adjust hw.acpi.video.lcd0.brightness

Is there a bug opened already for this, or could I fill one to keep track of this defect ?
I bet there are many people affected by this.

Thanks,
-- 
Stefan Parvu <sparvu@kronometrix.org>