2nd GPU very slow

[crazydoc]

Code:

andreas@Daedalus:~/Downloads/oclHashcat-1.01$ ./oclHashcat64.bin -b -m 1000 oclHashcat v1.01 starting in benchmark-mode... Device #1: Cypress, 512MB, 760Mhz, 18MCU Device #2: Bonaire, 922MB, 1050Mhz, 14MCU Hashtype: NTLM Workload: 1024 loops, 256 accel Speed.GPU.#1.: 8047.2 MH/s Speed.GPU.#2.: 4697.9 MH/s Speed.GPU.#*.: 12745.0 MH/s andreas@Daedalus:~/Downloads/oclHashcat-1.01$ ./oclHashcat64.bin -b -m 1000 -d 1 oclHashcat v1.01 starting in benchmark-mode... Device #1: Cypress, 512MB, 760Mhz, 18MCU Device #2: skipped by user Hashtype: NTLM Workload: 1024 loops, 256 accel Speed.GPU.#1.: 8050.4 MH/s andreas@Daedalus:~/Downloads/oclHashcat-1.01$ ./oclHashcat64.bin -b -m 1000 -d 2 oclHashcat v1.01 starting in benchmark-mode... Device #1: skipped by user Device #2: Bonaire, 922MB, 1050Mhz, 14MCU Hashtype: NTLM Workload: 1024 loops, 256 accel Speed.GPU.#1.: 4697.9 MH/s

Swapping the cards is the last try I think of, because it's a headless server running in a basement room of my house ;-). And what I also noticed is that GPU1 runs at peak core clock, while GPU2 does by far not. And amdconfig always shows a usage of 0%:

Code:

andreas@Daedalus:~$ !141 amdconfig --odgc --adapter=all Adapter 0 - ATI Radeon HD 5800 Series Core (MHz) Memory (MHz) Current Clocks : 760 1050 Current Peak : 760 1050 Configurable Peak Range : [550-875] [900-1225] GPU load : 95% Adapter 1 - AMD Radeon HD 7700 Series Core (MHz) Memory (MHz) Current Clocks : 527 1500 Current Peak : 1050 1500 Configurable Peak Range : [300-1200] [150-1600] GPU load : 0%