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Good for you. Either some manufacturers still have the old 6950 chips stocked up in their warehouses or you purchased an older hardware review card.
Unfortunately, it's a total crapshoot already and chances of successful unlock are decreasing as time goes by.
Not all cards have software-tweakable VRMs. I believe I needn't say that with nonref designs everything's possible?
My asus 6950 DCII 1GB also doesn't allow voltage changes. The good part, however, is that the card is pretty efficient as is, with lower power usage than reference models at their stock settings.
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Hopefully some can appreciate my work and give me some love over at ...
Your work on optimizing your own miners?? No offense meant but give me a break. So far you've been requesting help for the most part, it feels awkward that you should request donations. Show us the results of your hard work! Do some serious benchmarking across different kernels, compile a spreadsheet and post it, perhaps then you'll see some bitcoin love. |
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P4Man is absolutely correct, please allow me to elaborate on the 6970/6950 subject:
At the fab (silicon chip manufacturer) level, there is no difference at all, the 6970 and 6950 cards are using the same GPU chip.
While the differences seem minor (lower clock rate and shader count), they have some important implications for the end user.
Chips sold as 6950 may have been downgraded from 6970 status due to:
(1) faulty shaders - as long as the total number of functional shaders is >= 1408 everything is ok.
(2) low quality chip - not all chips made from the same silicon die are created equal. Some are better than others.
A poor-quality chip might not be stable at stock voltage when clocked at 880 MHz (hd 6970 default clock) but may still work fine at 800MHz.
(3) market demand - this is what every 6950 buyer is hoping for: a good, 6970-grade chip sold as 6950 solely due to market demand.
Keep in mind that AMD have been laser-cutting the disabled shaders on all 6950 chips to make them totally inert for a long time now.
It is probable that OP's chip is just substandard. P4's suggestion of raising the voltage might remedy the situation somewhat but miracles are not to be expected.
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No need, I wrote my own. 1996? That's Win95 stuff, positively ancient  That particular API call seems to have made it to XP. |
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In windows you need some command for sleep ... not sure what or where to get one.
You'll get a kick out of that - if you don't want to write your own sleep command from scratch, a quick-and-dirty fix is pinging your own machine n number of times using one second intervals  Makes perfect sense, doesn't it? At least in Redmond it does... |
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I am not sure that I have received a double payment (translate.google)
... This happened only to a few users ... A friendly suggestion: if indeed only a few users were able to perform double payouts it might be wiser of you to just dole out the money and perhaps reset/freeze the offending accounts' balance. The negative values reek of unprofessional code, not unlike negative item count in a web store's shopping cart. Do you mean to say that your miners owe you money now? What's more to the point, if someone performed a double payout of a larger sum they'll just ditch the old account and create a new one thus rendering your countermeasures are ineffective. |
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I second that. Make sure your system date and time are ok first.
Make sure you have not disabled NTP time checking in your OS.
Should the date unexpectedly be a few years off, likely the motherboard battery is to blame and needs replacing.
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I hope I am wrong, but I feel it's failing to pass the criteria defined "The Change Function". When you heard "iit's a hassle" in pro-bitcoin reports, you know you have a problem.
I totally agree with that. The reference client is notoriously lacking in features, making it newbie-hostile. The third party clients... well... seem only to have like 16 users. This is most unfortunate since in the users' minds the bitcoin client === Bitcoin. DAT, you know as well as I do how often client issues posts crop up in Support and Newbies... The fact that in most cases the users themselves have caused the issues (by failing to do backups, RTFM, and generally being severely technologically impaired) is overshadowed by a sad truth: With every such post we are watching Bitcoin fail its userbase. It is inconsequential that the userbase may be unwashed, uneducated, computer-illiterate morons - if we want Bitcoin to gain as much traction as possible, to become a truly significant currency, the client needs some serious reworking. The reality check is excruciatingly painful when one is promised ease of use, safety, and security and loses their 1500$ BTC wallet.dat by performing a trivial system restore. That surely is not the way to dethroning Pay-Pal, the roadsigns be damned. What I see in these forums is too much preaching to the choir and back-slapping when some face-slapping seems better served - wake up and smell the coffee. |
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And his contact website is "wotan.cc" a very popular concept with the whitepower crowd. I think we done found a nazi hiding here.
His ineptitude rather brings the image of a failed nazi eugenic experiment to mind He seems to have some tough moments before him, jude judging from all the attention he done successfully focused on himself. You'd believe even the dumbest of retards would change his damned password ( ein Volk, ein Reich, ein Passwort) having been burned once already. Sonderbehandlung highly recommended. |
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There is nothing wrong with your card, it's just broken as designed...
Barring an unofficial hardware hack or gpu bios reflash there is little you can do.
For some obscure reason, when introducing the 69xx family of cards AMD decided to link their minimum memory clock to the current core clock: min_memory_clk = core_clk - 125MHz.
The 7xxx series is no longer affected by this weird limitation.
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Doc, is that you? Random packet storm? Did that uncooperative block panic and go into self-defense mode? Two different ISPs here: grep Rej /var/log/bcm/cgminer.log
[2012-02-03 11:52:19] Rejected 00000000.fa5f6276.ffec0594 GPU 1 thread 3 pool 0
[2012-02-03 14:48:47] Rejected 00000000.3dfbc4e8.9d947728 GPU 0 thread 0 pool 0
[2012-02-03 18:53:01] Rejected 00000000.6697714e.24413b63 GPU 1 thread 3 pool 0
[2012-02-03 18:53:02] Rejected 00000000.eb786dc1.391eaf89 GPU 1 thread 3 pool 0
[2012-02-03 18:53:04] Rejected 00000000.a0e01036.951f5476 GPU 1 thread 3 pool 0
[2012-02-03 19:26:04] Rejected 00000000.33c800a9.78d87c84 GPU 0 thread 1 pool 0
[2012-02-03 19:26:09] Rejected 00000000.f65108c1.bcce7087 GPU 1 thread 3 pool 0
[2012-02-03 19:26:16] Rejected 00000000.12435199.de7a9686 GPU 1 thread 2 pool 0
[2012-02-03 19:26:23] Rejected 00000000.3afa04dd.9c2370ec GPU 0 thread 0 pool 0
[2012-02-03 19:26:28] Rejected 00000000.b407c65c.f9b19e41 GPU 0 thread 0 pool 0
[2012-02-03 19:26:29] Rejected 00000000.bdb442de.3dff4679 GPU 0 thread 1 pool 0
[2012-02-03 19:27:11] Rejected 00000000.e4b23f2c.b84fb8b9 GPU 1 thread 2 pool 0
[2012-02-03 19:27:24] Rejected 00000000.cb522e85.fc5588a1 GPU 1 thread 2 pool 0
[2012-02-03 19:27:46] Rejected 00000000.e6228bf4.fe79408f GPU 1 thread 3 pool 0
grep Rej /var/log/bcm/cgminer.log
[2012-02-03 09:15:11] Rejected 00000000.42d68edf.159cd9dd GPU 0 thread 1 pool 0
[2012-02-03 11:51:44] Rejected 00000000.888e345d.fa7c6a12 GPU 0 thread 1 pool 0
[2012-02-03 15:53:19] Rejected 00000000.48ba0fff.4496ff33 GPU 0 thread 0 pool 0
[2012-02-03 15:53:20] Rejected 00000000.57a74bc7.739e9338 GPU 0 thread 0 pool 0
[2012-02-03 16:17:36] Rejected 00000000.fac56b12.87264678 GPU 0 thread 1 pool 0
[2012-02-03 18:53:02] Rejected 00000000.8758f606.c395150e GPU 0 thread 1 pool 0
[2012-02-03 19:27:40] Rejected 00000000.178a0ae4.262de7cd GPU 0 thread 0 pool 0
[2012-02-03 19:27:47] Rejected 00000000.48ecabb3.f02dba81 GPU 0 thread 0 pool 0
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Did you check the links I provided?
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once bitcoin really goes mainstream money will flow into all the other crypto currencies. if solid coin was liquid would you still think it is a scam?
It's a centralized project which can be shut down any moment one individual chooses to do so. I don't see how it can be considered a viable crypto currency, do you? |
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I can't help but loathe the indaquate webforum threading...
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However ... shares are random so the time to generate 10,000 of them can vary quite a lot on the same card each time you do it.
Please, Kano, I never told him to do "time cgminer --shares 10000 ...", did I? The MHash/s info can be extracted from the logs. Still, good for you to have brought the potential issue up as I was admittedly sparse with implementation details. OTOH, with high enough shares even this simplistic approach (that is, "time cgminer...") is acceptable due to the law of large numbers. Syncing the benchmarking with difficulty change gives you plenty of time. I'd repeat the benchmark across at least two difficulty changes to rule out the possibility of random packet storms biasing the results. |
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Mind you, P4, the migration was a bit hasty... What if Doc opted to take the combat reconnaisance approach to pool server bugs? |
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And I'm not talking about a block chain attack, but an isolation attack.
Ah, understood. Yeah, that would make you somewhat vulnerable. Something weird is going on, have you tried reinstalling the client? Make sure you download it from homepage and not some random site. |
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Here are a few recommendations: (1) the easy solution - buy an aftermarket cooler. (2) the DIY solution - buy a failed Powercolor card with identical fans and swap the fans. (3) the ghetto solution - remove the fans and the shroud. Use zip ties to fasten some case cans to the heatsink. When in doubt, use duct tape. The fans will vibrate because as you guessed correctly, they are out of balance. This condition will seriously degrade the fans' MTBF. I wouldn't wait until the fans jam and the plate du jour is roasted Powercolor GPU à la lyonnaise  |
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Whenever I try, I seem to get the glas-half-empty attitude. A voice keeps telling me "You've had your luck, partner. It's going to get a lot worse before it gets better" uhmmm... wait, that's just my pet Raven... kindly disregard my bitching What blows my mind it that it's A1's first block... what's the pool op doing? Sleeping? Should have killed it off like 2M shares ago. Everyone should know when to fold and run to the hills, cut the losses. |
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