I have Pro Tools for Windows XP on an Intel chipset (915 or 925) and after tweaking my system, I still get “The Operating System held off Interrupts for too long: Increase the hardware buffer size” errors consistently. What’s wrong?
As of March 1, 2005, you’ll need to check this compatibility list for Intel chipsets:
Incompatible: (*see below)
Intel 915G
Intel 915P
Intel 925X
Compatible:
Intel 925XE
Intel 845 (all varieties)
Intel 865 (all varieties)
Intel 875 (all varieties)
Not Tested (therefore not recommended currently):
Intel 915GL
Intel 915GV
* If you have a chipset listed as incompatible, there is a likely solution to this problem, Digidesign reports high success rates with this.
The solution is to purchase a USB powered hub and plug only the MBox into it and then into your computer. The hub MUST be a POWERED hub (which has a wall-wort power supply) AND be running in POWERED mode, not just drawing power off the computer’s USB port.
Also, a side note, since the MBox does not need or require the high-speed USB 2.0, it does not matter if the USB hub is normal speed USB 1.1 or high-speed USB 2.0, either will work fine. But, since the price difference of getting the 2.0 is very small, if you might want 2.0 in the future for any other uses, it might be a good idea to go with the high-speed 2.0 hub.
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