[Community] GTA04 - Standby Time, Stable Kernel and Voice Quality

[Neil Jerram]

NeilBrown <neilb at suse.de> writes:

> My biggest problem is that the 3G module is prone to crashing.

Have you noticed any pattern to the crashes?  Under QtMoko I think I've
noticed correlations with using 3G instead of 2G; with rapid movement
(in trains); with GPRS being on; and with a specific time of day between
5pm and 6pm.

Also I wonder how far you've identified and categorised the non-working
states.  I guess the most famous one is where the modem /dev files
disappear and reappear again some seconds later, but I think there are
others too, e.g. where you said you have to pull the battery, which I
have seen too.

You've probably seen my recent emails about a C program for getting
diagnostic messages from the modem.  My hope is that if we can
categorise all the failure states, and get an idea (or guess) of what
causes each of those to occur, we might then be able to reproduce them
with diagnostic messages on, and those messages might give us clues
about how to work around the problem.  It would also be useful to have
low-power monitoring that would quickly identify whenever the modem had
gone into some bad state, and which bad state it was.

Regards,
        Neil