I have two 5830's on this W7x64 machine. They were running fine (not in Crossfire) for while now but I installed MSI Afterburner to mess around with it just now. Overdrive was enabled in CCC when I did the following:
Changed memory clock to the minimum for the 2nd card in MSI Afterburner. Immediately, 2nd display formed a weird pattern of horizontal, slightly sloping lines. That display was frozen with that pattern. I was able to move the mouse on 1st display but no programs responded. After 2-3 seconds of that the entire OS locked up (both displays).
I did a hard reboot and uninstalled Afterburner, thinking it was just a crappy app that crashed my sytem. Ever since then, any time I try to do anything that uses the 2nd GPU I get the same exact lockup. Most times windows locks up about a minute after bootup. This delay made me think something was weird in CCC, maybe CCC loads a little after bootup, and once it does it loads settings that are bad. I tried uninstalling ATI drivers via Add/Remove Programs->ATI Install Something (doesn't seem to actually remove drivers b/c Windows still runs with 1920 resolution afterwards).
If I take out card #2 windows loads fine, and both displays plugged into card#1 work. Reboot with the other card in slot #1, that card also works fine with both displays. So I think the cards are fine. The problem happens when both cards are in, and as soon as Windows tries to use the card in slot 2. I have downloaded latest Catalyst drivers from AMD site and installed & uninstalled those several times - no luck.
The weird thing -- and this def seems related -- is that when I managed to get Catalyst reinstalled and went into CCC, each card had different ranges for min & max core and mem clocks. But the cards are identical. Both are Sapphire 5830's purchased and installed at the same time. It seems like the MSI program did something to Windows or to the cards, or to the ATI drivers somehow, and now those settings are sticking. And whenever CCC finishes loading on startup, and tries to apply the "overdrive" settings, that's when the lockup happens. My guess is CCC tries to apply invalid clocks or something to the 2nd card after it starts up. I was able to get that far by reinstalling drivers, that way I could get into CCC before Overdrive gets turned on.
I think I can run the PC w/o Overdrive, I have to verify. But that's a temporary solution. I want to fix whatever the heck the root cause is.
Changed memory clock to the minimum for the 2nd card in MSI Afterburner. Immediately, 2nd display formed a weird pattern of horizontal, slightly sloping lines. That display was frozen with that pattern. I was able to move the mouse on 1st display but no programs responded. After 2-3 seconds of that the entire OS locked up (both displays).
I did a hard reboot and uninstalled Afterburner, thinking it was just a crappy app that crashed my sytem. Ever since then, any time I try to do anything that uses the 2nd GPU I get the same exact lockup. Most times windows locks up about a minute after bootup. This delay made me think something was weird in CCC, maybe CCC loads a little after bootup, and once it does it loads settings that are bad. I tried uninstalling ATI drivers via Add/Remove Programs->ATI Install Something (doesn't seem to actually remove drivers b/c Windows still runs with 1920 resolution afterwards).
If I take out card #2 windows loads fine, and both displays plugged into card#1 work. Reboot with the other card in slot #1, that card also works fine with both displays. So I think the cards are fine. The problem happens when both cards are in, and as soon as Windows tries to use the card in slot 2. I have downloaded latest Catalyst drivers from AMD site and installed & uninstalled those several times - no luck.
The weird thing -- and this def seems related -- is that when I managed to get Catalyst reinstalled and went into CCC, each card had different ranges for min & max core and mem clocks. But the cards are identical. Both are Sapphire 5830's purchased and installed at the same time. It seems like the MSI program did something to Windows or to the cards, or to the ATI drivers somehow, and now those settings are sticking. And whenever CCC finishes loading on startup, and tries to apply the "overdrive" settings, that's when the lockup happens. My guess is CCC tries to apply invalid clocks or something to the 2nd card after it starts up. I was able to get that far by reinstalling drivers, that way I could get into CCC before Overdrive gets turned on.
I think I can run the PC w/o Overdrive, I have to verify. But that's a temporary solution. I want to fix whatever the heck the root cause is.
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