Are you really using driver 11.1 with SDK 2.5? Update your driver.
Ok I tried 12.1 and same result.
12.4 and SDK 2.5 segfaults
Now on SDK 2.6 and 12.4 (8.963) and get this on 5970;
[2012-10-05 11:08:40] GPU0: invalid nonce - HW error
[2012-10-05 11:08:40] OCL NONCE 0 found in slot 11158
[2012-10-05 11:08:40] GPU0: invalid nonce - HW error
[2012-10-05 11:08:40] OCL NONCE 0 found in slot 11159
[2012-10-05 11:08:40] GPU0: invalid nonce - HW error
[2012-10-05 11:08:40] OCL NONCE 0 found in slot 11160
[2012-10-05 11:08:40] GPU0: invalid nonce - HW error
[2012-10-05 11:08:40] OCL NONCE 0 found in slot 11161
[2012-10-05 11:08:40] GPU0: invalid nonce - HW error
[2012-10-05 11:08:40] OCL NONCE 0 found in slot 11162
[2012-10-05 11:08:40] GPU0: invalid nonce - HW error
[2012-10-05 11:08:40] OCL NONCE 0 found in slot 11163
[2012-10-05 11:08:40] GPU0: invalid nonce - HW error
probably due to the one bad core? Not sure. cgminer still doesn't see the 6850;
[2012-10-05 11:13:45] Started cgminer 2.7.6
[2012-10-05 11:13:46] CL Platform 0 vendor: Advanced Micro Devices, Inc.
[2012-10-05 11:13:46] CL Platform 0 name: AMD Accelerated Parallel Processing
[2012-10-05 11:13:46] CL Platform 0 version: OpenCL 1.2 AMD-APP (938.2)
[2012-10-05 11:13:46] Platform 0 devices: 2
[2012-10-05 11:13:46] 0 Cypress
[2012-10-05 11:13:46] 1 Cypress
I will probably need to just step by step install driver and sdk until I get a combo that works. The install order does matter right? So SDK first then driver?