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@@ -348,10 +348,10 @@ penalty on generating new binaries. It is recommended to not use this SDK at
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this time unless you are using an ATI 7xxx card that needs it.
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Q: Which ATI SDK is the best for BFGMiner?
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-A: At the moment, versions 2.4 and 2.5 work the best for 5xxx and 6xxx GPUs. If
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-you are need to use the 2.6+ SDK (7xxx and later), the phatk kernel will perform
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-poorly, while the diablo or my custom modified poclbm kernel are optimised for
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-it.
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+A: At the moment, versions 2.4 and 2.5 work the best for 5xxx and 6xxx GPUs. SDK
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+2.6 or 2.7 works best for 7xxx. SDK 2.8 is known to have many problems. If you
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+need to use the 2.6+ SDK (7xxx and later), the phatk kernel will perform poorly,
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+while the diablo or (modified) poclbm kernel are optimised for it.
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Q: I have multiple SDKs installed, can I choose which one it uses?
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A: Run bfgminer with the -n option and it will list all the platforms currently
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@@ -361,6 +361,62 @@ Q: BFGMiner reports no devices or only one device on startup on Linux although
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I have multiple devices and drivers+SDK installed properly?
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A: Try "export DISPLAY=:0" before running BFGMiner.
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+Q: BFGMiner crashes immediately on startup.
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+A: One of the common reasons for this is that you have mixed files on your
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+machine for the driver or SDK. Windows has a nasty history of not cleanly
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+uninstalling files so you may have to use third party tools like driversweeper
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+to remove old versions. The other common reason for this is windows antivirus
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+software is disabling one of the DLLs from working. If BFGMiner starts with the
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+-T option but never starts without it, this is a sure fire sign you have this
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+problem and will have to disable your antivirus or make exceptions.
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+
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+Q: Is it faster to mine on Windows or Linux?
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+A: It makes no difference. It comes down to choice of operating system for their
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+various features. Linux offers much better long term stability and remote
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+monitoring and security, while Windows offers you overclocking tools that can
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+achieve much more than BFGMiner can do on Linux.
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+
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+Q: BFGMiner cannot see any of my GPUs even though I have configured them all to
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+be enabled and installed OpenCL (+/- Xorg is running and the DISPLAY variable is
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+exported on Linux)?
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+A: Check the output of 'bfgminer -d?', it will list what OpenCL devices your
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+installed SDK recognises. If it lists none, you have a problem with your version
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+or installation of the SDK.
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+
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+Q: BFGMiner is mining on the wrong GPU, I want it on the AMD but it's mining on
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+my on board GPU?
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+A: Make sure the AMD OpenCL SDK is installed, check the output of 'bfgminer -d?'
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+and use the appropriate parameter with --gpu-platform.
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+
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+Q: I'm getting much lower hashrates than I should be for my GPU?
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+A: Look at your driver/SDK combination and disable power saving options for your
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+GPU. Specifically look to disable ULPS.
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+
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+Q: Can I mine with AMD while running Nvidia or Intel GPUs at the same time?
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+A: If you can install both drivers successfully (easier on windows) then yes,
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+using the --gpu-platform option.
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+
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+Q: Can I mine with Nvidia or Intel GPUs?
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+A: Yes, but their hashrate is very poor and likely you'll be using much more
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+energy than you'll be earning in coins.
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+
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+Q: Can I mine on Linux without running Xorg?
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+A: With Nvidia you can, but with AMD you cannot.
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+
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+Q: I'm trying to mine a scrypt cryptocurrency but BFGMiner shows MH values
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+instead of kH and submits no shares?
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+A: Add the --scrypt parameter.
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+
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+Q: I can't get anywhere near enough hashrate for scrypt compared to other
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+people?
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+A: You may not have enough system RAM as this is also required.
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+
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+Q: My scrypt hashrate is high but the pool reports only a tiny proportion of my
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+hashrate?
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+A: You are generating garbage hashes due to your choice of settings. Try
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+decreasing your intensity, do not increase the number of gpu-threads, and
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+consider adding system RAM to match your GPU ram.
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+
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Q: Should I use crossfire/SLI?
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A: It does not benefit mining at all and depending on the GPU may actually
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worsen performance.
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Luke Dashjr