Am 24.08.2013 23:04, schrieb NeilBrown:
On Sat, 24 Aug 2013 14:22:55 Radek Polak pson...@seznam.cz wrote:
And the reenumerating modem - i really dont understand why we havent
tried newer firmware. For me missed calls is quite serious problem.
I'm starting to think the the re-enumeration could be an omap-usb
problem. I turned off a couple of power-saving features and the rate
at which my modem reenumerates went way down. Sometimes the the modem
Hmm could this by any chance have something to do with the infamous
Linux-USB problem, recently pointed out by Sarah Sharp?
http://permalink.gmane.org/gmane.linux.usb.general/93288
disappears and comes back. Sometimes it disappears and doesn't come
back. In those cases if I rmmod the relevant modules and
modprobe them again it sometimes comes back and sometimes doesn't.
When rmmod/modprobe doesn't work, a reboot does.
But the reboot doesn't remove power from the modem so just resets the
omap. So it seems that the problem must be in the omap-usb driver. At
the very least if we could get it to reset the connection to the same
level as a reboot resets it, then we should be able to improve
reliability.
Oh, and by the way: Don't rfkill block wwan :-( It doesn't
actually cause the modem to stop transmitting, but it does cause it
to be behave very badly in intermittent ways. My phone had been very
unstable for quite a while and I eventually traced it to an rfkill
block all that I had in my startup scripts. Removing that helped a
lot.
BR,
Lukas
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