Bug#627554: xserver-xorg-video-radeon: HD 5750 3rd screen displays interesting psychedelic colour swirl pattern covering whole screen

[Alex Deucher]

On Sun, May 22, 2011 at 3:37 PM, Tim Wootton <tim at tee-jay.demon.co.uk> wrote:
> On 22/05/11 00:06, Alex Deucher wrote:
>
>> Not a bug.  Only 2 non-DP monitors are supported since there are only
>> two plls.  If you want 3 or more monitors the rest have to be DP.  The
>> fact that you can make it work with some fiddling is pure luck and is
>> completely unsupported.  You end up with one of the plls driving two
>> monitors which only works if both monitors have the same clock and you
>> get the ordering right.
>
> Switched HDMI for DP, so now running 2 x DVI and 1 x DP, I get exactly the
> same symptoms.

Are you using native DP or a DP to HDMI converter?  If you are using a
converter, is it an active or passive converter?  If it's passive,
you'll have the same limitation as before.

Alex

>
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>> Alex
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