Correct.

Did try that, tried auto, gen3, gen2, and gen1, no luck. But no issues now, got it working! Looks like it was the drivers all along. Just an FYI to anyone else who runs into this same issue, make absolutely sure that the drivers get fully uninstalled when you are setting up new cards, adding, etc. I thought running DDU would be enough, but looking at device manager after a DDU uninstall but before a driver reinstall, while 4 of the 5 cards showed up as generic display adapters, one showed up still as 1080ti, just marked as having problems. I had seen this multiple times before, but just wrote it off as a quirk. This time though for some reason it struck me that this couldn't be right. I made sure to right-click and uninstall the device along with it's drivers, and just to make sure, did the same for the other 4, even though they were just listed as display adapters. Restarted, and all 5 showed up listed as display adapters. Installed drivers, restarted again, and there they all were, mining away. Checked again with the pcie speed, left it on auto in the BIOS just to check, and it still worked, so looked to be purely a driver issue.

Not sure how or for what reason this issue could affect the relationship between the x16 and x8 port, but I'm just glad it's solved now, was really bugging me. Thanks for your help, and anyone else that responded as well.

Went ahead and tried that, cleared both cmos and reapplied the BIOS(it was already at the latest version). No luck. Tried with a different miner as well, saw the same behavior, so at least I can say that it's not just ewbf's miner. But why this is happening, can't figure out. Thanks for the advice though.


Yeah, tried doing this multiple times. Unfortunately, always the same result. Don't actually have the sixth card yet, as I saw this problem, wanted to fix it before I sprang for another card. It's really just bizarre, again, the card plugged into the x8 slot when the x16 slot is occupied shows up in device manager, overclocking programs. And the port itself is functional, know this through a pcie wifi card I used. But for some reason it's not picked up by miners. The most annoying thing is, I swear it worked when I had all the pieces loose, hooked up everything loose to test/configure. I was able to use the port and get it working, I'm almost 95% sure. Once I put everything together in the rig is when it stopped working, or so I think. What could have changed, I don't know. Maybe the board is just bad, but no way to know without a multi-week rma that may or may not turn up anything. I'm inclined to say it's functional due to the fact that another device works in the slot, but having a card there is clearly not working. I'll try to clean them again and see if it works, though I'm not holding out too much hope. Thanks for the tip though.

Ran into an issue, wondering if anyone's seen something similar. Have 5 1080TI's on a win 10 setup, mobo is a gigabyte z97x-gaming 5, it has 6 pcie slots. It has an x16 slot which runs at x16, and an x16 slot running at x8, which shares bandwidth with the full x16 slot. It also has an x16 slot running at x4 speeds, sharing bandwidth with 3 other x1 slots. Toggling the x4 slot to x1 speeds in the BIOS enables it to be used with the x1 slots concurrently.

I would like to move from 5 to 6 cards, and that is where I have a problem. I'm having an issue with the pcie x16/8 slots. Specifically, cannot get the miner to utilize 2 cards if they are in the x16 and x8 slot respectively. The x16 slot by itself works fine. The x8 slot by itself works fine. But if they both have a card, only the x16 slot card is picked up. So at the moment, I have to use the x16 slot, the x4 slot, and the 3 x1 slots, all of which work fine together. But again, want to add a last card to this rig. Curiously, it's not like the card in the x8 slot is not detected if there is something in the x16 slot. It shows up as a device in device manager, and various overclocking programs can see it as well. It just wont be picked up by the miner, only 4 cards get used. It only gets used if I pull the card out of the full x16 slot. I even tried putting in a pcie wifi card in the x8 slot with the 5 other cards running. That not only detected and installed, but it connected and was in use, meaning for sure there is no issue with the slot running when the full x16 slot is in use.

Has anyone seen something like this? Seems to be a problem with the miner, as again, the card is detected by the OS/various programs, and the slot can even be used by other pcie devices, it's just that the miner doesn't use it to mine if a card is present there at the same time as a card in the x16 slot. Wasn't able to find an alternative mining program to just test and see if it would make full use of the cards in the expected manners, the few I tried didn't work very well. If anyone has a solution to this issue, would be great, or at least a suggestion of another mining program to use which can support 5+ nvidia gpus, just so I can test and see if it works on that.

I might look into that, saw it before, but thought I'd try it on my own first.

On that note, again, to anyone using linux/ubuntu, especially if you have 1080ti's. Does your power tend to bounce around a lot? On windows, when I ran it with a 1080, it would push right up to where I set the limit, with occasional dips. Now on ubuntu with a 1080ti, I'm seeing random drops in power of 25-50+ watts, before it goes back to around what I set it at. Probably the reason I see my clock speed jumping up and down as well.

Hi, I've got a few questions for anybody who uses the miner on linux/ubuntu, don't have very much experience at all with using linux. I've got a few 1080ti's, and I've installed the latest proprietary Nvidia drivers. I've seen people mention installing cuda as well though. Is that necessary, and if so, does it come along with the regular nvidia drivers, or is it something extra to install? Also, compared to the windows version of the miner, do all the same commands work? As in things like fee, pec, etc. Just add them to the config file as extra parameters, under the common section? In addition, is there some convenient place to see the stats as they come in, like the windows command prompt shows you when it's running on windows? I know you can go and see the web console, and see a snapshot of the stats, but there's no equivalent of the constantly running stats that the windows version had?