Same here epic failure for r9 280 Dual-x (compute errors, 0 h/s, red everywhere, no need to ask drivers, oc, compute, lock memory pages all ok! i have a Vega 56 rig too doing better but still 100w more for V8 than V7 and 100h/s less...
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i dont want to be disrespectful with your awesome work and support (really) but:
As you ask on your 1.7.0 release post: NO! WE DONT WANT USELESS EXTRA TUNING GADGETS to mine 10h/s more but screwing up 50% of our gpu's and all pasts benchmarks.
I mean of course if it's usefull, like very usefull i'm ok but:
i MINE : CryptoNight ,CryptoNightAlloy, CryptoNightArto, CryptoNightB2N, CryptoNightFast ,CryptoNightHaven ,CryptoNightHeavy ,CryptoNightItalo , CryptoNightLiteV7, CryptoNightSaber, CryptoNightStelliteV4, CryptoNightV7, CryptoNightV8 with a profitability switcher that i coded
if i need to bench (x8)²x508x48 possible settings/cards/algo on every release i'll rather to stop using a tool that will makes me spend more time to bench and set up than to mine ...
SO PLEASE YOUR PROGRAM IS GREAT!= new goodies or i dont know how do you call this (fragments, bralock, aes) and all these ****** settings which makes me pull my hairs off for 1 week to earn what: 10h/s or 0========E X I T !
very easy fix, use old version that good on r9 280 und problem solved
my vega & rx rigs thank you for 1.7.0 doktor!
Why do i always have to repeat myself : i don't have every amd card to test against, so yes, it may happen that an optimisation for one is not working out for the other, especially this is related to older cards.
The extra gadgets don't take off from your hashrate, but they can gain you if 10hs then 10hs, but they won't screw 50% of gpu's as you say.
I agree with dingdongtobias, if there is an older version that works good for you, then why not use that instead?
Further optimisations will be all towards newer cards in the future, those i got and can test with.