bcozd wrote:
It is a common occurrence for an interrupt to generate when that happens and the system is reporting it occurred. That by itself should not be related to the error unresponsiveness error at all.
I could reproduce the occurance of the entry in the system.log
(if you open a terminal in the background and do a tail -f /var/log/system.log you can watch very nicely what happens)
It only shows up when you use the keyboard or touchpad after not using one of them for a couple of seconds and then using it again.
So here’s my best guess:
After a specific amount of time (5 seconds seems a quite close figure from my tests) »something that has to do with the USB Hub« (meaning some parts of the hardware) is put into an sleep mode. As we know, Mavericks is trying to get the max out of power saving.
Now if you touch keyboard or touchpad after these 5 seconds, the system gets a »wake up call«.
This is what the kernel reports. »kernel[0]: Hey guys, guess what, parts of me just woke up. The USB device Apple Internal Keyboard / Touchpad may have caused this by issuing a remote wakup. Or something else happend. I don't know.«
And now something more: I personally experienced my freezes only in situations when I did not use keyboard and touchpad for quite a few seconds (happened only 2 times to me, so I remember)
This leeds me to my guess: sometimes (in the from Apple mentioned rare circumstances) the wakup-call simply fails. Parts of the system are sleeping too deeply to hear the keyboard/Tochpad knocking on the door, so to speak.
Under which circumstances this glitch happens is unknown of course. But it leads me more into the direction to say: this is 100% a software problem. (Software as in »not-hardware«)
Some even more guesses: The system knows, whether a USB device is plugged in. If so, the system does not put the USB hub to sleep. Because the USB device could have a problem with this. But if no USB device is present, the HUB (or something else that is connected to this topic) is put to sleep after 5 seconds.
This would explain perfectly why plugging in an USB device stops the freezing.