[08:45:13] Started sgminer 4.0.0
[08:45:31] Probing for an alive pool
[08:45:32] (null) difficulty changed to 0.003906
[08:45:32] Network diff set to 2.66M
[08:45:33] GPU0: invalid nonce count - HW error
[08:45:34] GPU0: invalid nonce count - HW error
[08:45:34] GPU0: invalid nonce count - HW error
[08:45:35] GPU0: invalid nonce count - HW error
[08:45:35] GPU0: invalid nonce count - HW error
[08:45:36] GPU0: invalid nonce count - HW error
[08:45:36] GPU0: invalid nonce count - HW error
[08:45:37] GPU0: invalid nonce count - HW error
[08:45:38] GPU0: invalid nonce count - HW error
[08:45:38] GPU0: invalid nonce count - HW error
[08:45:39] GPU0: invalid nonce count - HW error
[08:45:39] GPU0: invalid nonce count - HW error
...I just checked if its thread concurrency related, because it tends to mess things, but checking a few values around it seems that it isn't. This is on a 5830. Hmm.. no shares submission, just plenty of HW.
edit: debug output
[08:52:51] OCL NONCE 13269 found in slot 0
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU0: invalid nonce - HW error
[08:52:51] Discarded cloned or rolled work
[08:52:51] GPU 0 found something?
[08:52:51] OCL NONCE 13488 found in slot 0
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU0: invalid nonce - HW error
[08:52:51] Discarded cloned or rolled work
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU 0 found something?
[08:52:51] OCL NONCE 13833 found in slot 0
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU0: invalid nonce - HW error
[08:52:51] Discarded cloned or rolled work
[08:52:51] GPU 0 found something?
[08:52:51] OCL NONCE 14321 found in slot 0
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU0: invalid nonce - HW error
[08:52:51] Discarded cloned or rolled work
[08:52:51] GPU 0 found something?
[08:52:51] OCL NONCE 14476 found in slot 0
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU0: invalid nonce - HW error
[08:52:51] Discarded cloned or rolled work
[08:52:51] GPU 0 found something?
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] OCL NONCE 14712 found in slot 0
[08:52:51] GPU0: invalid nonce - HW error
[08:52:51] Discarded cloned or rolled work
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU 0 found something?
[08:52:51] OCL NONCE 15122 found in slot 0
[07:58:23] Started sgminer 4.0.0
[07:58:23] Loaded configuration file ./sgminer.conf
[07:58:23] WARNING: GPU_MAX_ALLOC_PERCENT is not specified!
[07:58:23] WARNING: GPU_USE_SYNC_OBJECTS is not specified!
[07:58:37] Probing for an alive pool
[07:58:37] (null) difficulty changed to 0.007812
[07:58:38] Network diff set to 2.66M
(5s):12.71K (avg):13.17Kh/s | A:0 R:0 HW:723 WU:0.0/m