Sorry,
1.5.6 is bu***hit release:
http://______ |__| _____ ______ Portable Instant Mining Platform
\____ \| |/ \____ \ Pimp Version 1.5.6
| |_> > | Y Y \ |_> > ATI Catalyst: 14.6
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CPU: AMD FX(tm)-4300 Quad-Core Processor
Cores: 4 @ 3817 Mhz Memory: 4 GB
Miner not started - Stats Unavailable.
Last login: Fri Jul 25 16:00:42 2014 from 192.168.1.2
[ GPU Status: Miner not running]
[04:15 PM][Uptime: 6 min][root@darkminer2(192.168.1.102)]
[/root]:# /opt/sgminer5/sgminer -c /opt/ifmi/sgminer.x11.conf -T
[16:15:53] Started sgminer 4.2.2-283-g3ddff
[16:15:53] * using Jansson 2.6
[16:15:53] Loaded configuration file /opt/ifmi/sgminer.x11.conf
[16:15:54] Probing for an alive pool
[16:15:55] Switching to NH x11 - first alive pool
[16:15:55] Startup GPU initialization... Using settings from pool NH x11.
[16:15:55] Startup Pool No = 4
[16:15:55] Building binary darkcoin-modTahitigw64l4.bin
[16:15:56] CK x11 alive, testing stability
[16:15:56] Switching MRR x11-2 to stratum+tcp://us-east01.miningrigrentals.com:50032
[16:15:56] Switching MRR x11-1 to stratum+tcp://eu-01.miningrigrentals.com:50033
[16:15:57] TMB x11 alive, testing stability
[16:15:57] MRR x11-2 alive, testing stability
[16:15:57] MRR x11-1 alive, testing stability
[16:16:11] Initialising kernel darkcoin-mod.cl with bitalign, unpatched BFI, nfactor 10, n 1024
[16:16:11] Initialising kernel darkcoin-mod.cl with bitalign, unpatched BFI, nfactor 10, n 1024
[16:16:11] Initialising kernel darkcoin-mod.cl with bitalign, unpatched BFI, nfactor 10, n 1024
[16:16:11] Initialising kernel darkcoin-mod.cl with bitalign, unpatched BFI, nfactor 10, n 1024
[16:16:11] Initialising kernel darkcoin-mod.cl with bitalign, unpatched BFI, nfactor 10, n 1024
[16:16:11] Initialising kernel darkcoin-mod.cl with bitalign, unpatched BFI, nfactor 10, n 1024
[16:16:11] Initialising kernel darkcoin-mod.cl with bitalign, unpatched BFI, nfactor 10, n 1024
[16:16:11] Initialising kernel darkcoin-mod.cl with bitalign, unpatched BFI, nfactor 10, n 1024
[16:16:17] API running in IP access mode on port 4028 (4)
[16:16:31] Accepted Coin 1993 Diff 0.352/0.100 GPU 3 at MRR x11-1
Segmentation fault13.88Mh/s | A:0 R:0 HW:0 WU:0.199/m
[ GPU Status: Miner not running]
[04:16 PM][Uptime: 7 min][root@darkminer2(192.168.1.102)]
[/root]:#
This happens with included sgminer5 as well as with latest version from git.
1.4.2 is the best for now..