https://bugs.freedesktop.org/show_bug.cgi?id=30349
--- Comment #17 from Jouko Orava <[email protected]> 2010-12-19 10:05:31 PST --- As to mplayer, you can see if "-vo xv" triggers the problem if MCE is enabled in the kernel; this is how I had mplayer configured. You could also install the proprietary Catalyst driver, and see if you can reproduce the softresets. You might have to try a lot of different graphics workloads, but if you can reliably cause a softreset with Catalyst too, you can be pretty sure it's a hardware problem. Here's what I think (but remember this is just my humble opinion): The root cause is a hardware problem, specifically a problematic voltage regulator. In your case, the regulator is just borderline; disabling MCE causes the motherboard to ignore the voltage drop; however, it's not outside the working envelope for the northbridge chip, so the machine keeps working. In my case, the voltage regulator failed in the span of a couple of weeks (from completely OK to cracked and melted). Initially, disabling MCE avoided the resets. Later, as the regulator degraded further, the voltage fluctuations most likely caused the hardware CPU voltage protection to kick in, causing a reset. The RS780 chipset is a complex beast. It's quite possible that a specific workload -- not the heaviest one, but a specific type of workload -- stressed the right voltage regulator (by requiring more current than otherwise). It might be something as simple as a workload synchronized to the mains frequency, or something esoteric like a PLL programmed to a specific frequency. I suspect only a Gigabyte engineer can tell for sure. -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
