Unfortunately Windows seems to be the more important market. I wish AMD would put more manpower towards Linux. However, I hope AMD can help you fast. Good luck!
I'm in the process of looking for a new graphics card. While I hate to hear about your R280x issue, can you tell me how much of an evaluation you put into the R290 on Opensuse 13.1. The AMD support page is only showing Opensuse 11!
Trust me, I know how linux can lead to all day hair ripping sessions. That is what I'm trying to avoid.
BTW, did you try one card at a time?
dstanescu I had exactly the same issues as you have had. I spent 2-3 weeks following various tutorials on how to set up the drivers that AMD have supplied for their graphics cards in linux. I attempted to install in various shades of linux - ubuntu / lubuntu / xubuntu. I lost track of how many times I reinstalled everything from scratch.
I then got fed up as I concluded it is impossible to get these fglrx drivers working in linux.
I then move to windows 7 and the story is not much brighter here. When I initially connected the R9 280x card my (by now) Windows 7 machine would not boot. It was as if I was in a catch 22 situation. If I connect the card then the machine will not boot so I cannot install the drivers. If I disconnect the card and boot the machine everything is fine. But then there is no card connected so when I install the drivers they do not get installed correctly.
AMD (when they work) are great GPU's but their drivers are the worst I have every seen on any platform.