Comment # 11 on bug 102300 from Michel Dänzer

(In reply to fayn from comment #9)
> I updated bunch of packages today (linux-amd-staging,mesa etc) and now
> DVI-I-1 is not recognized but it is shown as DVI-D-1. This also brought new
> problem: monitors 'blink' randomly, about every ten seconds and it is VERY
> annoying. 

Sounds like most likely there's been a regression on the amd-staging kernel
branch you're using. Please file a separate report about that.