If you’re an owner of the Epic 4G, and you’re running the EB13 firmware, you may have experienced the dropped key press annoyance that XDA forum member mkasick has confirmed exists.
The issue is that EB13 often drops twice pressed letters on the hardware keyboard, for example typing ‘hello’ often outputs ‘helo’. The XDA member also discovered that the EB13 keyboard driver delays 1/10th of a second between reporting ‘key_press’ and ‘key_release’ events. This means that when folks press the same letter twice in that 100ms, the kernel will only be able to acknowledge one of the presses.
mkasick has provided a kernel source patch that fixes the EB13 hardware keyboard issue for twice-pressed keys, restoring responsiveness.
Fore more detailed information and to download the patch, head on over to the forum thread._________