That's so odd that you get flickering on your stuff. I've not once had a flicker on my screens running 5760x1200 resolution on a single 5850 toxic edition. I'm using cat 10.8 too. I'm sorry to see you're having problems with it though
But out of curiosity is everyone who has experienced flicker using 1920x1080 or has it happened w/ 1920x1200 monitors as well?
Good info, Jasper.
I have 2560x1600 monitor as well, I should try using it as secondary, to see what's up, but I am so beyond trying to find the problem...
I am currently using 2x1920x1080 monitors, and only the secondary monitor flickers. I've tried differnt cables, tried HDMI/DP/DVI, etc..
I know that clock changes, at least in my instance, cause the flicker, and I also know that idle clocks are totally nerfed, as they drop LOWER when playing hardware-accelerated video content. Why idle clocks are HIGHER than loaded clocks...well..should indicate that AMD is having serious problems here.
Anyway, the flicker is due to the clocks jumping up and down(Even if they just change once), and I seem to recall W1zzard saying it had to do with that exactly, as each monitor, while having the same refresh rate, does not refresh at the exact same time, and the flicker is caused by a partial frame being rendered on the secondary monitor when the clocks change. The flicker takes place at the edge of the data already rendered for that frame...
When the clocks adjust, the refresh is re-sync'd, and this re-training isn't fast enough to be hidden by clockspeed on secondary monitors(as it happens on the primary as well, but the clockspeed covers it up).
With that in mind, even the cursor corruption makes sense to me, and leads me to the belief that each and every multi-monitor config needs a customized profile for the monitors used, and because of the near limitless combinations of monitors possible, this is not very likely to ever happen.
Personally, I'm waiting for them to release the multi-stream DP1.2 boxes for the 6-series cards, and at that point, if it's fixed using that external device, I may pick up another AMD VGA, but that's not very likely...the pictures of the "GTX595" with 3xDVI ports interests me far more, at this point. The fact that these boxes are even palnned, at this point, really highlights that there is a problem here that AMD isn't exactly acknowledging.