Miner didn't support new AMD 20.5.1 driver.
We are testing with the new driver and will release 5.0c soon that will support it. So far it seems that it behaves as the "good" drivers - i.e. allows mining until DAG epoch 373 on 4 GB cards.
20.4.2 had mem clock problems with navi.Pls someone recommend driver for both navi and polaris cards without anybug.19.11.3 no problems but not recommend PM devs.
Please note that in the latest drivers the memory clocks of Navi cards are shown as double the value from the previous drivers. If you have used -
mclock 950 in the older drivers, in the latest driver you must use
-mclock 1900. In order to check if this is the case, run the miner without -mclock but with
-hstats 2 and see the nominal memory clocks then use the appropriate
-mclock value.
Upgraded -mclock 900 to -mclock 1800 with 20.5.1 drivers and it works like a charm,