[Bug 42004] modprobe radeon -> failed FB and display off

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=42004

--- Comment #8 from Alex Deucher <agd5f at yahoo.com> 2011-10-20 12:39:28 PDT ---
(In reply to comment #6)
> Created attachment 52606 [details] [review]
> Xorg.log.0
> 
> In xorg.conf, I added a modeline and a preferred mode to the monitor section
> (inspired by edid info):
> 
>   # 1368x768 @ 70.00 Hz (GTF) hsync: 56.00 kHz; pclk: 101.70 MHz
>   Modeline "1368x768_70.00"  101.70  1368 1448 1592 1816  768 769 772 800 
> -HSync +Vsync
> 
> And the following options in the device section:
> Option     "PanelSize"                  "1368x768"
> Option     "IgnoreLidStatus"            "True"
> Option "Enable" "True" # this one is from
> http://wiki.debian.org/XStrikeForce/HowToRandR12
> 
> 
> Excerpt from attached log:
> [ 34912.978] (II) RADEON(0): RandR 1.2 enabled, ignore the following RandR
> disabled message.
> [ 34912.978] (WW) RADEON(0): Option "PanelSize" is not used
> [ 34912.978] (WW) RADEON(0): Option "IgnoreLidStatus" is not used
> [ 34912.978] (WW) RADEON(0): Option "Enable" is not used
> [ 34912.978] (WW) RADEON(0): Option "PreferredMode" is not used
> [ 34912.978] (--) RandR disabled

Those options are for UMS only.  They are not relevant for KMS.  You log is
from the discrete card which, as I said earlier, is not attached to any
displays.  You need to start X on the APU to use the displays.  You probably is
probably related to the DP bridge chips which are not always very reliable at
the moment.

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