@gs777 let us know if old drivers behaves differently. The previous 0.3 version had a big problem, it was detecting one card at time very slowly, it took me 2 minutes to reach full hashrate, 0.4 detects all cards immediately.

@fk2 so the miner launches correctly, try to run it directly with the same command line you see in the output:

You should be able to see any error message it produces.

ewbf 0.4 is the latest one for new equihash variants
read here: https://bitcointalk.org/index.php?topic=4466962.0

We call those new variants in nvOC as "Zhash", as WTM does and we refer to this new ewbf miner for new variants as "z_ewbf".
The old ewbf 0.3.3 and 0.3.4 which we refer to as simply "ewbf" 3_3 and 3_4 are two miners you can use for the classic equihash variant, which we refer to as simply "equihash".

If you think ewbf author did a bad choice in naming the new miner (for us: z_ewbf) again as "EWBF Equihash Cuda miner" and versioning it the same way such that now officially exists both "ewbf 0.3.3" and "ewbf 0.3" where the second one is newer and a totally different miner for different algos (note: the new miner does not support the classic equihash algo) then I will support you if you would like to start a campaign to get the new miner renamed to anything different.

I still have the old problem lurking around even with latest beta, i.e. my home network freezes completely, usually roughly after one day period. After unplugging nvOC miners one by one the network recovers. I remember this would be an Ubuntu update issue but shouldn't the Ubuntu updates be disabled by default?
Any ideas why this could happen?

I am using 19-20 and latest beta (nvOC V19-2.1 beta Ubuntu-16.04 Nvidia-390 2018.07.07) in my rigs. Today this happened with latest beta which made me worry.
Yes, I use cheap switches and already ordered new ones.

--
Tigel

Is the new 0.3 version command line arguments are same as before or there are new options?
Can you please post new arguments if its changed, so we can make the changes in 0miner and 1bash if needed.

miner --algo 144_5 --server us-east.equihash-hub.miningpoolhub.com --port 20595 --pass x --user me.myrig --pers BgoldPoW

+-------------------------------------------------+
|         EWBF's Eqihash CUDA miner. v0.3         |
+-------------------------------------------------+
20:15:04 INFO: Current pool: btg.suprnova.cc:8866
20:15:04 INFO: Selected pools: 1
20:15:04 INFO: Algorithm: 144_5 "BgoldPoW"
20:15:04 INFO: Devices: User defined.
20:15:04 INFO: Temperature limit: 90
20:15:04 INFO: Api: Disabled
---------------------------------------------------

Still profitable to mine with S9?

I shut down my S9 becos the power bill is a killer...

For some reason I can making pretty poorly on zpool lately. I have 18 S9's and 32 L3+and I am averaging only $100-110 a day.

Sure when beta testing is done and after stable release

I am all for it. I think the developers are doing an outstanding work and it would be fair to reward them.