Linger
1. Known Bugs
- Computers that use USB keyboards have a problem that affects Linger. Per the USB standard, input devices (e.g. keyboards and mice) are sampled at 125Hz (8ms), so some sensitivity is lost. There are two known solutions.
- Use PS/2 keyboards - they apparently do not have the same sampling problem
Purchase a "gaming keyboard", which has 1000Hz (1ms) sampling. We have tested the keyboards from [http://www.razerzone.com/gaming-keyboards Razer], and can confirm that they solve the problem. All models have the same chips, so the $50 one works just as well as the $100 one.
For more: [http://hlplab.wordpress.com/2009/02/02/diagnosing-the-linger-usb-keyboard-sampling-error/ HLPLab Blog post on Linger problem]