The Great Linux 7990 Thread
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I have a this: [url=https://www.avadirect.com/product_details_parts.asp?PRID=28414]https://www.avadirect.com/product_details_parts.asp?PRID=28414[/url]I get 1Mhash or 1.5x 7970 out of dual 7970. I am happy with the results and the space savings so I can add more hash. HOWEVERS: I am finding that I cannot modify the behavior of this thing without some hidden misfeature triggering and playing havoc with my economics. It says it can do 950 MHZ to 1000, but it consistently goes back to 501 MHZ. Attempts to raise these megahertz results in lock up. The voltage probably goes down suddenly and it can’t sustain more than 501 at that rate.
I’m probably hitting the TDP limit, a power based limit mechanism that does not actually take into account the work done. To change this limit it is necessary to flash the BIOS. I am not comfortable flashing my 7990 with a BIOS from any random BIOSrUs website. Also LINUX can’t edit the BIOSes anyway.
This brings me to the topic: LINUX is awesome. Corporate support for LINUX sucks. We as a community can get things done. Can we at the very least get a BIOS editor or the source code to the popular monitoring tools out there? There are ways to access and modify the settings at a hardware level (i2c) without performing rocket surgery. But it’s interesting that although people can get the tools for free, source code is still nowhere.
How do we get the manufacturers or software authors to share knowledge?
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First identify why your cards are acting that way. Flashing it may not solve the problem or could make the problem worse if you don’t know why it’s behaving that way.
Could they be over heating?
