On 05/14/2015 07:34 AM, Tom Easterday wrote: >> On May 13, 2015, at 5:38 PM, Gene Heskett <[email protected]> wrote: >> Am I the only one? > A couple times now while working with an ATOM machine running Wheezy and > 2.7~pre6 it just hung with the screen on. I could move the mouse and the > cursor would move, but no response from anything menu to keyboard input. I > didn’t have ssh enabled or would have logged on from elsewhere to see if I > could get in on the ethernet port and see what was going on. I was hoping > it was just a freak occurrence but now wondering… > Whenever this happens, I try unplugging and replugging the keyboard or mouse (whichever is misbehaving). Sometimes old PS/2 keyboards would just crash the micro, and a power cycle would bring them back. ESD or EMI would sometimes crash the USB link between the KBD/mouse and the PC, so re-enumerating the device would sometimes clear that. I have had more USB freezes than with PS/2 devices, and so try to avoid using USB HMI devices on the machine tools. If the cursor moves with the mouse, the CPU is not dead, and is accepting interrupts. So, it sounds like just the keyboard.
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