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

[Tim Wootton]

logs as requested, looking through dmesg, this is the only thing that 
stands out to me

[    1.768265] [drm:dp_link_train] *ERROR* channel eq failed: 5 tries
[    1.768267] [drm:dp_link_train] *ERROR* channel eq failed

these weren't there with the passive adapter.

I will try the dp patches. I've not done kernel compiling since pre-git 
so bear with me while I work it out.

cheers,

Tim

On 24/05/11 22:33, Alex Deucher wrote:
> On Tue, May 24, 2011 at 4:00 PM, Tim Wootton<tim at tee-jay.demon.co.uk>  wrote:
>> On 22/05/11 21:49, Tim Wootton wrote:
>>>
>>> On 22/05/11 21:16, Alex Deucher wrote:
>>>
>>>>
>>>> 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.
>>>
>>> It's a passive, got an active on order now, so I will see if that does
>>> the trick. Thanks for the advice.
>>
>>
>> Ok,so now using an active converter (Sapphire with Eyefinity logo), but
>> still the same problem, perhaps it could be a bug after all.
>
> Please attach your xorg log and dmesg output.  You might also want to
> try the recent DP patches I posted for 2.6.40.  They are available in
> the radeon-drm-testing branch of Dave's tree:
> http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=shortlog;h=refs/heads/drm-radeon-testing
>
> Alex
>

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