:cry:
Just chiming in here, I have the same random screen blanking issues with the Accell active displayport adapter purchased from Amazon. System specs are:
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1. I saw one post, with no further support from anyone else, saying that RMA'ing the adapter resulted in one that did not blank out, which would SEEM to be supported by the number of folks claiming success on the first try, when using the Accell/Bizlink active adapter. Now if any of the success claiming folks can say they are using anything larger than a 19 inch at 1280x1024 on that display port adapter, I'm ready to hear it.
2. I saw several posts eluding to the dreaded "firmware patch". All of them claiming that afterward, their problems were solved. I'm not scared of firmware patches, but if some folks are saying that the displayport adapter is working fine at hi-res, then it would seem to be maybe a bit overzealous, considering the ever present risk of a bad flash run...
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I have to agree on all accounts, to me it seems that about 50% and maybe more of the Bizlink (ACCELL) adapters work and the others do not work at higher resolutions no matter what, worse all the images of the adapters from Sapphire and others look to be the same Bizlink adapter re-branded again, so I see no chance that they will be any better.
Personally as for firmware, I'm unwilling to risk a 400 dollars card in the hope that it will fix a problem that either Bizlink or AMD should have been aware of and already fixed (I'll RMA the card first for one that works if that is the solution), let the manufacture fix there own problem.
Having communicated with Bizlink support it seems that they are unwilling to admit that there adapter does not work with all monitors or that the adapter could even be a problem, while it is easy to determine from these and other forums that some adapters work and others do not, so that means if no monitor or cable is changed then it is a 100% adapter based issue.
My current plan is to just continue to hound them until they admit to the issue and replace the adapter free of charge as it is faulty.
I'd suggest that everyone with a similar issue do the same (even if you already returned the device for one that works), Bizlink needs to understand that there QA process is crap and that the product they are shipping is broken so that it improves for other people.
Also if mailing ACCELL support include the following information:
1. OS
2. Monitor brands and Models
3. Cable Brand and Model (that is not always easy, but luckily mine are from monoprice)
4. EDID from the monitors (which I could not provided under Windows 7)
USE:
http://www.entechtaiwan.com/util/moninfo.shtm
5. Adapter Model and BIOS revision (not sure what good BIOS does as I'm unwilling to risk a 5870 on a BIOS upgrade).
ERIC