Originally Posted by kometata
The last response from Nvidia team was:
I tested again on the same system but this time using 1200W power supply and I could not reproduce the problem. Also I used a different OS, OpenSuse 11.4 x64.
So it strongly appears that there is an issue specific to your system and not a driver bug.
Let me know if I can help further.
The same person from Nvidia after FEW months FINALLY found out the problem:
In other words DONíT USE two GTX590 cards under Linux!!
Originally Posted by Nvidia
This problem is definitely a bug which I have reproduced and reported to Engineering to investigate and fix.
Since Engineering has a very large workload, it will likely take some time before they can work on this.
If it is acceptable, I will close this case and will inform you when a fix is available to test.
Please let me know.
I share this ONLY because there is no official information in the net about this problem.