The new driver fixes the problem mostly, but not completely. Changes in the delay parameter seem to bring on red flickers. I've only been able to test on a HD 4600 system since the HD 4400 left for college.
I've updated my website to add version 2.0 of my demo program, which demonstrates the remaining vestige of the problem. Both the executable and source are there. The 2.0 version is essentially the same as before, but keys a-z set the delay to 0 to 25 milliseconds. If I start RedFlicker_2.0.exe and then alternately press 'b' and 'k' (1 millisecond and 10 milliseconds delays) many times, I see the red flickering.
- Arch