by Hello, everyone,
I am meeting trouble to configure my external 56K modem, which works fine in
Win98/NT. I tried to make the PPP connection via various ways, such as Kppp,
wvdial, and chat etc. The problem I met still exists, I am looking for help
eagerly.
The modem can make the connection smoothly, unfortunately the speed drops
from 1.5Kbyte/sec to stalled quickly. Whenever I press a new hyperlink, the
speed is accept initially, but it drops to 0 after 30 second step by step. I
have tried to figure out the reason, actually I duplicatie the same Init
strings from the Window driver (.inf) file, so supposely the Init string is
correct. It is a modem made of Cirrus chip( Init string is "AT &F E0 V1 W4
&D2 &C1 S0=0 -C1").
Some one told me the problem is due to the lack of fast FIFO in my serial
port, I looked dmesg, the ttyS0 is reported to be a 16550A, I wonder how
come it was set to that mode. I type
"setserial -b /dev/ttyS0 irq 4 port 0x3f8 skip_test autoconfig spd_vhi"
in console window, and reconnect, it doesn't work. I wonder how to set the
serial port in the rc, I add this command in /etc/rc.d/rc.local. After
bootup, the I check using "dmesg", to my disappointed, the ttyS0 still in
the same setting ..... :((
So far the modem still work in the unstable mode as what I descriped. I
wonder if it is due to serial problem, if yes, how to set it up. If no, any
other possiblities? Help me..:(
Regards,
-Ling