https://bugs.freedesktop.org/show_bug.cgi?id=73530
--- Comment #47 from Paul Menzel paulepanter@users.sourceforge.net --- Looking at the panel/monitor CMN 1343, I found a list with more information [1].
Chi Mei Innolux N133HSE-EA1 Asus U38N(-C4010H) Asus Zenbook UX31A, UX32VD Clevo W230ST 1920x1080, IPS, matte 30 pin eDP shop: diytrade.com review: Notebook review: The Verge shortname: CMN 1343
It seems that it is used in other systems and works with GNU/Linux there. Though I only found Intel systems [1][2] and I have no idea if the panel is really connected using eDP, though the note above says so.
So it might be a problem specific to the Radeon driver.
[1] https://hackpad.com/Best-Panels-Wiki-D5UvkrtVvJ9 [2] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=687203 [3] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=724510