confirm your kernel menuconfig and try again
(*) PPP support for async serial ports
(*) PPP support for sync tty ports
On Oct 21, 4:44 pm, Herman <hermanmao...@gmail.com> wrote:
> Hi all,
>
> I try to enable data connection function through external modem. It can dial
> but data connection failed. PPPD can't work well. In PPP daemon, it showed
> "Couldn't set tty to PPP discipline: m". I used 2.6.26 kernel before, but
> now I used 2.6.29 kernel. In kernel configuration, I have already enabled
> "Device Drivers->Network device support->PPP support". They have same result
> in io control "TIOCSETD", it seems that it can't set to data discipline. I
> use USB to Serial converter interface, below is log of radio and pppd. Does
> anyone have suggestions? Thanks.
>
> D/AT ( 606): AT> ATD*99***1#
> D/AT ( 606): AT< ATD*99***1#
> D/AT ( 606): AT< CONNECT 115200
> D/RILJ ( 662): [0041]< SETUP_DEFAULT_PDP {1, ppp0}
> D/GSM ( 662): [PdpConnection] PDP setup on cid = 1
> I/pppd ( 806): Starting pppd
> E/pppd ( 807): Couldn't set tty to PPP discipline: m
> D/AT ( 606): AT< ~ }# !}!}!} }<}!}$}% }"}&} } } } }%}&} } }
> }}'}"}(}"}#}$ # U~
>
> D/AT ( 606): AT< OK
> I/pppd ( 812): pppd exited with 1
> I/pppd ( 816): Starting pppd
> E/pppd ( 817): Couldn't set tty to PPP discipline: m
> I/pppd ( 820): pppd exited with 1
> I/pppd ( 824): Starting pppd
> E/pppd ( 825): Couldn't set tty to PPP discipline: m
> I/pppd ( 828): pppd exited with 1
> I/pppd ( 832): Starting pppd
> E/pppd ( 833): Couldn't set tty to PPP discipline: m
> I/pppd ( 836): pppd exited with 1
>
> Best regards,
> Herman
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