In an effort to figure out this problem, I loaded some other linux
distributions. It turns out Ubuntu can recover from this problem rather
than lock up. It also provides some useful diagnostics. It turns out the
lock up can be (in theory) cured with this patch:
Any help on how to apply this patch would be appreciated. Or has the
patch already been applied and 12.3 will have the fix?
I suppose a secondary issue would be to discover how Ubuntu is trapping
this condition and not crashing. Note that Ubuntu sends control back to
the serial port since USB is not working. It can't restart the usb hub chip.
On 2/3/2013 9:52 PM, gary wrote:
I have a Beagleboard XM rev C. I find that
applications that work fine
on an intel machine under 12.2 cause the Beagleboard XM to freeze.
Apparently the Beagleboard has a history of USB issues, which had I
known I probably would have gone with the Panda.
Since the board locks up, I don't know how to diagnose the problem.
There is nothing useful beyond the boot information on the serial port.
I have posted the issue to the google groups arm forum, which in turn
suggested I go to the opensuse forum to see if there is a way to get
diagnostics from the serial port or other means.
The programs that cause the lock up are rtl_adsb and dump1090.
I don't believe the problem is specific to these programs, which run
well on intel, but rather it is related to the usb traffic. The freeze
can occur in minutes or hours. There is no pattern that I can detect.
Suggestions? Anything to dump?
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