Topic: Techies unite! need some trouble shooting. --reward!-- (Read 670 times)

Ive been at training the last 2 days and have been away from my machine. I will be at the machine tomorrow to make changes.
I am able to monitor it from my phone though, i had a mate at work restart the machine to get it hashing at max again.

The oddest thing then happened that night. The same thing but to a different card.
The card plugged into the main psu and plugged into the mobo started getting slow, where the 2nd card that was giving issues is now working fine.
Seems like its not card or psu related.....

Ive ordered another 4gig ram chip, should arive in the morning making it a total of 8gig.
Ive also decided to give bamt a miss, to many issues annoying me. Going to run windows 8.1 off a 120gig laptop drive.

With those 2 changes it should hopefully resolve it. Will update tomorrow once ive done everything.

I've considered that logic as well but really if you are even considering that then the PSU just needs to be replaced with a better quality.  And really.. the mobo gets the power from the PSU so if it's pushing less voltage it's likely to be impacted across other outputs such as the mobo.

Crappy PSUs will also suck bad.  I've learned the hard way.. 900W x 2 doesn't matter unless they are both high quality gold or better.  I just switched from a crappy 950W to a gold 850W PSU and watched a gain of 30 kh/s per card.

Also.. are you OC at all?

"Look in GPU-Z and report the base clocks for the problem card.  how much OC from the base is it?  I had a similar problem and I just had to scale back the Over Clock on my problem cards."

Attempt to power this card using the motherboard, without the powered riser. Could be that over time, your PSU that is under a light load is beginning to push less voltage over time.

Good luck

The card should be fine as i bought 3 of them from the same place, sold off 2 to mates of mine. Theirs are working perfectly.
2nd, unlikely to be an issue with bamt, as the other 2 cards are hashing perfectly.
3rd, the psu worked just fine on its own for months as it was powering another pc untill i took it out for this rig, (might just mean its not connected correctly.)

The rig was running perfectly on 2 cards on one psu, the new card on riser with separate psu is the issue people.
So its either got to do with the riser or the way the psu is wired or a combination of both i guess.

Like i said before ill play around with the cabling a bit, the rig runs for a day or two without issue which is odd.
I might just get a 1200w and be done with it.
the 2psu adapters are not sold in my part of the world so i would have to play with the cables myself if I wanted to go that way.

My rig went to hibernation somethimes. You need to set bamt to static ip. See if that helps

Also ive read if its alays at same time it could reside in the time settings of bamt. Try putting new bamt os on usb and try other os.

Almost sounds like your system is going to sleep or hibernation.

Did you make sure to turn off your power saver stuff? I turned everything off to be on the safe side, like hard drive, monitor, everything. I would check power settings in control panel then hit advanced settings and make sure turn off all sleep, idle, hibernation settings.

Look in GPU-Z and report the base clocks for the problem card.  how much OC from the base is it?  I had a similar problem and I just had to scale back the Over Clock on my problem cards.

first of all try the gb 270 in a different setup, in ur main PC to see if the card has any issue at all. if its ok, then hook up that 450W psu in ur main PC aswell, see it again, if still no problem, then its something with the way the 2 PSUs start, also, make sure the pcie riser that you have for the 270gb is cut, problem might be with 2 different psu's voltage meeting at the pcie slot. You must cut the pcie cable of the 270gb on 450w psu, if you didnt do that already, check that first, and then start what i wrote in the beginning. Also, put a wattmeter on the 450W psu, check it when it runs at max kh, and check it later when it drops down heavily, see if the wattage is the same.

Your config would be helpful.

Troubleshooting ideas:

• I would try the problem card with the 750w psu. If that works, it has to do with the PSU. You may want to try http://www.add2psu.com instead of the hack you did.
• Try it alone on the motherboard and/or in a different slot. If either works, it's not the card. It would be either the mb or a config issue.
• Try it with/without a riser, whichever you're not doing.
• Try setting all the volts to stock.
• Make sure you have the latest BAMT. If so, try Win.
• I doubt it's RAM with the cards you have, but if you're running very low RAM, like 2GB, bump it up. You should have at least 4GB.

The goal is to get it working first, even if it's all stock and alone on the board. From there, you can add the other cards and ramp up the khs.

On monday ill swap the power supplies around and have the riser gpu powered on the main psu, leaving the asus card to be powered by the 450w psu in the 8x slot. will see how it goes and revert back.
Anyone ever experience issues like this before?
Any suggestions?

Just some more info,
Before i did the fan change it happened in one day midnight that night.
When i made the fan change it happened 2 days after also at midnight.
Not sure if time is just a fluke, but it seemed to be a pattern.

Hi chaps,
Got a wierd prob with my mining rig.
Bit of an odd setup but i better explain that from the start.
Gigabyte GA-Z68AP-D3 (rev. 2.0) Mobo with latest bios
4gig ram and Celeron CPU.
Running bamt on a 8gig usb3 flash in usb2 port (issues with usb 3 port)
750w +450w PSu's. Did the hack with the pin on the second psu.
using 3x gfx cards at the moment.
in 16x slot running the monitor is a 6870 - 290khash.
in the 4x slot got an asus R9 270 undervolted getting 480-490khash
both those cards are running on the 750w psu powering mobo to. No issues with these cards at all.
3rd card is the problem card....
its a gigabyte R9 270 using same settings as the asus one, but no unvervolting (seemed to hang when i did)
Temps are around the same as the asus even when not undervolted so i figured no need.

This trouble card is running on a pcie 1x slot with a powered riser cable. (Tested 2 diff cables)
The card is powered by the second 450w psu. Both the risercable and the 2 pcie 6 pin cables.

Now the odd thing is that all cards run fine for a day or two, rock solid, then at midnight it seems the gigabyte starts to slow down.
and very slowly to. Almost seems as if it looses 10khash per hour all the way untill its running in the sub 100khash mark. all the while showing 99% load. Very odd indeed.
The fans of that card seem to slow to a crawl before that though, i had to set the fan speed to manual 85% to resolve that.

Now ive spent many hours trying to find anything similar but to no avail.
To get it going a simple restart of the machine fixes it until it happens randomly again.

Any help would be much appreciated.

P.S. If someone posts a successful fix that properly resolves the issue ill be sure to send some BTC your way.