All right, I finally managed to discover what was the problem. (gigabyte r9 280x)

After disabling


I am able to set - g 2 parameter. However now when intensity 13 is set, I'm getting HW errors. The highest usable intensity is 12, but still can't squeeze more then about 300 kH/s : |


doesn't work.

(Ubuntu 13.10, vertminer 0.5.3, AMD linux beta driver 14.1, AMD-SDK 2.9)

Any ideas what might be wrong? With - g 2 set, I've got nice 350-370 kH/s but definitely too much HW errors.

Have you any experience with 13.12 AMD drivers? Are they better regarding mining vertcoin than the beta ones?