Keith Packard <keithp at keithp.com> schrieb: > You almost certainly don't need IOMMU/VT-d support though; that > virtualizes devices for DMA by the guest OS, which generally no-one > does. > > The BIOS manual for the Z68 board mentions two configuration options, > > CPU Configuration: > Intel Virtualization Technology This exists... > North Bridge Configuration: > VT-d This doesn't... > I'd love to see tests with these in the three possible combinations: > > VT enabled, VT-d enabled > VT enabled, VT-d disabled > VT disabled, VT-d disabled Since there's only VT in my BIOS, I tested both settings, and both failed. I can only reliably boot with RC6 disabled. Otherwise it reproducably hangs on a black screen either just before the boot splash or it never shows the boot splash from initramfs (but works, I see HD activity) and then hangs on loading the next boot splash from real_root. The monitor goes into idle when this happens. But usually the system gets past this and later fails to start or log in to X. The screen goes crazy (flickering or colorful stripes running down the left side of the screen) when this happens. System freezes completely, e.g. if I had HD activity the LED stays on forever, hw reset button dead. > Meanwhile, I'll get a patch ready for 3.2 which disables RC6 again. If I should provide more info to identify my system, please tell me. Regards, Kai
