OC SUPRNOVA

How do I get ethereum miner to recognize 2 cards on the same computer ?... it only mines one of 2 cards .nvidia 980ti at 22 mh/s.
It should have  -d 0,1 but doesn't work..like cuda should.
Thx

EDIT: This my bat file that doesn't work      

ethminer.exe  --farm-recheck 3000  -o http://eth-us.suprnova.cc:3001/razorsedge.eth1/22

On the donation bat file I get 1 card 980ti that gives 22 mh/s...but this bat file above doesn't work.
Please help.
thx

I am not sure what you mean change my video card? this is the same as my GPU now https://www.cryptocompare.com/mining/sapphire/radeon-r9-295x2-ethereum-mining/ apart from mine is XFX

tried to change video card with something more 'simple type radeon hd 7870 (12 MHs)
... Or else to try it depends on video card !!           https://www.cryptocompare.com/mining/#/equipment

try to check on handling video cards and disable devices in case that integrated into the processor or motherboard ..... probably see for the first one that does not have enough memory

uses etherminer version = ethminer-0.9.41-Windows 64-bit  ??



if you do not want to configure anything you can try on https://ethpool.org writing

ethpool.bat file = ethminer -F http://ethpool.org/miner/adress eth.worker1/50 -G

and wait a while to see your miners

the last two hours there are problems the pool !!!   

Did you try the other things I suggested?  You do not need to build anything.  Use the ethminer in the link I gave you.  Add --opencl--platform 1 to the end of your bat.  Try to mine.

Use this ethminer   https://github.com/Genoil/cpp-ethereum/tree/master/releases 

Do you have or are you using on board video? Use this if you are, try different numbers  --opencl--platform 1     I bet this is your problem.

Have you installed these https://www.microsoft.com/en-us/download/details.aspx?id=48145 

Whoever told you that has no idea what they are talking about.  In your pic, you're running geth, that has nothing to do with pool mining.  If you wanted to solo-mine you would need geth, it's basically your wallet.  If you wanted geth, why not just download the official binary instead of building it.  Your ethminer isn't detecting your video card.  Did you try the things I mentioned?

Have you restarted your computer lately?  It sounds like ethminer is not detecting your card, have you installed the microsoft c++ redistributables?  Leave off the local work and global work to see if that's the problem, probably not.  When you didn't have the -G you were most likely mining with your cpu, that's why your MH/s was so low. 

ethminer -G -F http://eth-us.suprnova.cc:3000/login.worker/speed --cl-local-work 256 --cl-global-work 8192

You probably don't have -G

Yes, you'll need that for your worker.

But -G is for GPU Mining.. You really want to mine with your GPU, it won't work well with CPU only

anybody tried to start sgminer X11 mining on r9 290 with 15.3 drivers? It stucks with black screen   

Ok, looks like a few people here so I'll keep it public.  Hopefully learn something myself and get a tip or three on bioses for this card.  So here's what's happened with your hash rate.... but first... you'll need an important tool, best damn info tool I've seen in decades.  AIDA64.

http://www.aida64.com/

http://www.guru3d.com/files-details/aida64-download.html

Get that and get real familiar with what's behind the first tab, Computer, Sensor.  You'll see a lot there that you'll need to know.  Specifically, there is not just one temperature on your GPU, there are three listed for these cards.  There's your shader, the chip, and then there are the all-important and harder to cool VRM's, Voltage Regulator Modules.  Here's a picture of the layout of the R9-290 via Overclock.net.  GO THERE!  Haunt it!  Live there!

https://i.imgur.com/hb27Pge.jpg

http://www.overclock.net/f/72/ati-cooling

So here's what's happening when your hash rate drops.  Basically you're running up against a power limit, threshold, and it's throttling back.  You can see how many watts your card is pushing in that sensor log, right at the bottom along with all the voltages for your card.  We used to just "push it till it moves" but that's changed with the R9 series.  To get my stable 1170/1350 I used Afterburner to set Core Voltage at just +75.  Then I nudged it back to it's next slot at +69.  I'm pretty sure that the next notch is crashola.  Try this... Set your Core Voltage at +100 and your core clock up to say 1175, whatever you know it'll take.  Hit Detach on the top right panel, now you can see all the gauges.  Start up Heaven 4.0, windowed, and let it rip on Extreme.  You should see it go for that clock, then throttle back.  Check your wattage on Aida64, there's your power limit.  As you drop that core voltage you'll see it throttle less and less.  Now you should have enough to find your highest clocks for mining whatever.  Just start up SGminer, find the balance.  I'm going to have to be a bit abrupt here because I'm totally exhausted, three days up, and crashing hard.  This should give you a good start though and essential tools.  By the way, the way I get my cards to run as cool as Miles Davis is by fitting a CPU water-cooler on them, and there are some real cheap ones like the Cooler Master Seidon series which have mounts that are absolutely perfect for this.  Check the spacing on these screw holes...

http://images.bit-tech.net/content_images/2013/01/cooler-master-seidon-120m-review/seidon120m-2b.jpg

Dunno why this went UP in price, because it was the first and cheapest liquid cooler I bought years ago, for sixty bucks Canadian.

http://www.memoryexpress.com/Products/MX42382

Keep an eye out for a used one you can snap up cheap.   Cheap... I TOTALLY lucked out a couple of years back and scored not one but TWO Thermaltake 2.0 (or 3.0, can't tell) units for $22 Each!  Mounts for them are also very easy, couldn't find a picture though, sorry.  Why so cheap?  Oh, they had the wrong firmware on them.  Oh snap, what a... nothing really.  Really gotta update these pictures, show the mounts and all, later, after sleep.

http://i633.photobucket.com/albums/uu53/acatphoto/Tech/BadGirl02.jpg

http://i633.photobucket.com/albums/uu53/acatphoto/Tech/BG_Detail01.jpg

7950 @ 1200/1600, and never over 50C.  G'night!

OUCH!  Yeah, I'd say that's running a bit hot.  You gonna be ok with that or could you use a hand?

OMG, NOPE
i mean use help
help says -k, not --k