Comment 360 for bug 124406
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| Daniel J Blueman (watchmaker) wrote | #360 |
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0e1f616
(Get the code!)
I've been observing this happen once a week across a wide range of x86 systems with USB keyboards in the last (5?) years.
Since I've observed it in the virtual terminal and have never observed this with PS/2 keyboards, I suspect there is an event race condition in the USB input stack, eg a missing write barrier.
When I increase system latency, it looks like there's more chance of it happening, so this feels like MMIO write ordering causing a lost key up event.