Comment 89 for bug 119194

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Bal (bal) wrote : Re: [hardy] ps2 mouse erratic - parity errors - lost synchronization errors

Hi Damjan,

I figured out this mouse did not work with some other boards too. In some boards no cursor at all, in others like described above, it went crazy. I found that this was no software issue, it did not matter what OS you used, it only mattered what motherboards you used.

When I had thousands of one particular type of Intel G31 chipset boards in my stock for which this mouse did not work, I had to find exactly what was it. It was the controller IC that is NOT COMPATIBLE (what's the reason?) with some boards, both cheap and expensive.

The problem controller IC was: MX84511FP. I replaced this IC with MX84521FP (without touching anything else), the mouse works like the best mouse in the world in all boards that I can test.

Thanks

Bal