[Bug 70791] [HSW ULT]eDP brightness is zero after the computer start

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70791

--- Comment #3 from Qingshuai Tian <qingshuai.tian at intel.com> ---
Created attachment 88097
  --> https://bugs.freedesktop.org/attachment.cgi?id=88097&action=edit
dmesg of kernel with the patches

In the test where I got dmesg in Comment 1 , I do have use hot keys to change
the brightness , but the monitor didn't brighten up .

I tried the patches you gived above with video.use_native_backlight=1 module
parameter. But the bug still exit. 

I am afraid I didn't make it clear that the eDP monitor turn into black when it
start to show the grub list. So it's already black before loading in the
kernel.

I hope this dmesg could be helpful.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20131025/9100b5c8/attachment.html>