33. Intel® 5 Series Chipset and Intel® 3400 Series Chipset Not Responding to Cx Request when USB Async Advance Door Bell is Set
Eric Intel has updated this errata to claim that this problem only happens with "one proprietary GUI application." Unless by that they mean "Windows", they're lying.
Eric Note: Someone on the USB team in Windows provided me with a script you can run in the debugger to unset the bits that enable the buggy feature. Email me for details.
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