same :
after reboot :
Have any entries in:
- SoC Frequency (Mhz)
- SoC VDDmax, (mV)
wow, the hashrate is so good, but i wonder how much ur wattage is at the wall ?
- I tested with 805 and 0 it’s same
- tested gminer,Nb, phoenix, trm same
- many oc same problème
@SunshineMiner with your info same 
the problems remain on Gpu 1 which is an 6800 FE
after a reboot/reboot miner the hashrate is no longer the same and often low on the Gpu 1
EDIT :
what seems to work for GPU 1 , but I think random :
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This clearly indicates, it needs some voltage to bump up some of the less easy/automatic states.
What is amd-info while it is running at 62?
Have you removed the XT and tried the 6800 in the same slot solo?
no i test with the two gpus ,
here is the info now :
but what is strange is if i reboot it will no longer have the same hashrate
Stop miners
Apply new clocks
Restart miners
?
yep every time
Are you rebooting every time?
I am not tracking that part of your troubleshooting process.
yes every time like all my rigs
While tuning overclocks with these GPUs, I would not be doing that unless you are running additional scripts, grub edits, etc.
You have a GPU that is going to require some fine tuning, unlucky, but happens. Right now almost 20% of my 6800’s require some additional tweaks to run 61.5MH/s+ through reboots, upgrades, etc.
stop/restart miner here:
about 1275-1315 watts
thanks you , i will be careful
thank you!
Here are the OC setting I use along with the implementation of @frxbg’s script.upp.sh solution (RX6800 - Efficient Overclocking - #349 by frxbg).
How and why u set DPM?
Don’t, not applicable, look at the posting date. Prior to F-State scripting and HiveOS Kernel update #72 which has it in the baseline.
That DPM setting was a relic of my RX470/570’s which were in that rig. Was a pain to remove them 