Marv, I just realize why the module cannot be found. It is because the kernel dependency has not been updated. After I executed depmod, the module could be found and further problems were found. See the details below. Does it mean that the driver is not suitable with my hardware? Any other driver worth to try? Regards, Dityo ---------------------------------------------------------------------------------------------------------------------------------- Starting Agere Soft Modem FATAL: Error inserting agrmodem (/lib/modules/2.6.25.5-1.1-pae/kernel/drivers/char/agrmodem.ko): Unknown symbol in module, or unknown parameter (see dmesg) FATAL: Error inserting agrserial (/lib/modules/2.6.25.5-1.1-pae/kernel/drivers/char/agrserial.ko): No such device from dmesg agrmodem: Unknown symbol LnxTransferCodecVerbs agrmodem: Unknown symbol resetResumeCallBack agrmodem: Unknown symbol HDAStopDma agrmodem: Unknown symbol getHDAStream agrmodem: Unknown symbol azlGetResourceInformation agrmodem: Unknown symbol releaseHDAStream agrmodem: Unknown symbol LnxTransferCodecVerbsWrite agrmodem: Unknown symbol setResumeCallBack agrmodem: Unknown symbol HDARunDma agrmodem: Unknown symbol GetHDABaseAddress ------------------------------------------------------------------------------------------------------------------------------------ On Thu, Sep 18, 2008 at 7:37 PM, Marvin Stodolsky <marvin.stodolsky@xxxxxxxxx> wrote: > Dityo > > Check for presence of the drivers with: > ls /lib/modules/2.6.25.5-1.1-pae/kernel/drivers/char/ > If they are there just manually: > $ su root > # modprobe agrmodem > # modprobe agrserial > and proceed from there following the HOWto > > MarvS >