Same problem here.
Using adb logcat for main, I read the following log:
E/pppd ( 1017): This system lacks kernel support for PPP. This
could be because
E/pppd ( 1017): the PPP kernel module could not be loaded, or
because PPP was not
E/pppd ( 1017): included in the kernel configuration. If PPP was
included as a
E/pppd ( 1017): module, try `/sbin/modprobe -v ppp'. If that
fails, check that
E/pppd ( 1017): ppp.o exists in /lib/modules/`uname -r`/net.
E/pppd ( 1017): See README.linux file in the ppp distribution for
more details.
however this is not true, because the kernel has PPP support and I
succeed in starting pppd from command line.
Me too suspects a permission problem, but I still haven't managed to
find a solution.
I have also another problem via pppd from command line: the interface
is up and connected but using a ping with numeric address (no dns
problem) doesn't work: it seems that I cannot receive data from ppp0
but I can send data because I see my ping packets going to the modem
(using a sniffer). Another strange thing is that LCP echo packets are
correctly sent and received, so I suspect again a permission problem.
I will open a new topic for that.
Daniele
On 25 Mag, 22:57, Jeffrey <jffrych...@gmail.com> wrote:
> Hi all,
>
> With exactly the same pppd command, if pppd is invoked from command
> prompt, data connection works fine. I can browse Internet and I can
> get ppp logs in DDMS.
>
> Here is the command (same as that in init.gprs-pppd called by RIL)
> C:\Program Files\Android\android-sdk-windows\platform-tools>adb shell
> # /system/bin/pppd /dev/ttyUSB0 115200 mru 1280 mtu 1280 nodetach
> debug dump defaultroute usepe pdefault ipcp-accept-local ipcp-accept-
> remote connect-delay 5000 linkname ppp0
>
> However if I invoke pppd in Android RIL (err =
> property_set("ctl.start", SERVICE_PPPD_GPRS); statement in reference-
> ril.c), pppd deamon is started (no error returned) but the ppp0 link
> is not up, and I can not get any ppp log in DDMS. Since there is no
> log visibility, I am not able to know what is happening.
>
> Could anyone please help
> 1) Any suggestion on how to get ppp logs (if it is invoked by
> RIL)?
> 2) Any idea why invoking ppp from RIL give a different result
> than
> from the command prompt?
>
> Appreciate your help in advance.
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