thanks for the help, but 4 of my card are samsung and 1 hynix, i was getting an error before of to much overclocking on GPU 4
(GPU4 got and incorrect share, if you see this warning often, make sure you did not overclock it too much! ) that's the hynix card GPU4  i lower the Memory MHz from 2200 to  2170 and this error stop.

i'm gonna try the core clock to 1200 but i think that's not the problem

Good morning, i started using simplemining a few days ago and it was working perfectly for like 10hours, then it start rebboting every now and then,
my rig is build with 5 Amd rx 580 8 Gb red devils cards, and power supply of 1000w, my overclocking settings are:
Core MHz: 1100,1100,1100,1100,1100
Memory MHz: 2200,2200,2200,2200,2170
Core Undervolting: (nothing wrote in this)
Powerstage: 6
Target Temperature ℃: 65
Minimum Fan speed %: 45
claymore-eth-v11.9

it restarted like 18 time last night while i was sleeping and the error i saw in the console was this:

[ 13.142349] random: 7 urandom warning(s) missed due to ratelimiting
[ 13.706549] audit: type=1400 audit(1532829880.371:2): apparmor=_STATUS_ operation=_profile_load_ profile=_unconfined_ name=_/usr/sbin/tcpdump_ pid=549 comm=_apparmor_parser_
[ 13.707745] audit: type=1400 audit(1532829880.371:3): apparmor=_STATUS_ operation=_profile_load_ profile=_unconfined_ name=_/sbin/dhclient_ pid=547 comm=_apparmor_parser_
[ 13.707747] audit: type=1400 audit(1532829880.371:4): apparmor=_STATUS_ operation=_profile_load_ profile=_unconfined_ name=_/usr/lib/NetworkManager/nm-dhcp-client.action_ pid=547 comm=_apparmor_parser_
[ 13.707749] audit: type=1400 audit(1532829880.371:5): apparmor=_STATUS_ operation=_profile_load_ profile=_unconfined_ name=_/usr/lib/NetworkManager/nm-dhcp-helper_ pid=547 comm=_apparmor_parser_
[ 13.707751] audit: type=1400 audit(1532829880.371:6): apparmor=_STATUS_ operation=_profile_load_ profile=_unconfined_ name=_/usr/lib/connman/scripts/dhclient-script_ pid=547 comm=_apparmor_parser_
[ 14.086286] r8169 0000:06:00.0 eth0: link down
[ 14.086292] r8169 0000:06:00.0 eth0: link down
[ 14.086369] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 15.751792] r8169 0000:06:00.0 eth0: link up
[ 15.751806] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 17.215447] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro,commit=120
[ 47.840188] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring sdma1 timeout, last signaled seq=1562, last emitted seq=1564
[ 47.843480] [drm] No hardware hang detected. Did some blocks stall?
Rig is rebooting due to system error. It could be caused by too much overclock/undervolt.

anyone had a solution for this or what could it be?

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