Aircard 850 on a Thinkpad Z61m

[josh at ramat.cc]

After much meddling I managed to get the Aircard 850 assigned a TTY.
When I insert the card into the PCMCIA slot I hear two beeps and see the
following in syslog:

Jun 21 00:57:36 lab001 kernel: pccard: PCMCIA card inserted into slot 0
Jun 21 00:57:36 lab001 kernel: pcmcia: registering new device pcmcia0.0
Jun 21 00:57:36 lab001 cardmgr[6857]: initializing socket 0
Jun 21 00:57:36 lab001 cardmgr[6857]: socket 0: Serial or Modem
Jun 21 00:57:36 lab001 cardmgr[6857]:   product info: "Sierra Wireless", "AC850", "3G Network Adapter", "R1"
Jun 21 00:57:36 lab001 cardmgr[6857]:   manfid: 0x0192, 0x0710  function: 2 (serial)
Jun 21 00:57:36 lab001 cardmgr[6857]: executing: './serial start ttyS0'
Jun 21 00:57:36 lab001 cardmgr[6857]: + Default modem setup

I set wvdial to use /dev/ttyS0, but get the following error message when I run
wvdial:

lab001:~# wvdial
--> WvDial: Internet dialer version 1.56
--> Cannot open /dev/ttyS0: Input/output error
--> Cannot open /dev/ttyS0: Input/output error
--> Cannot open /dev/ttyS0: Input/output error

I tried running minicom and typing AT but I don't see the AT I typed. I'm not 
sure if this is connected but when I start cardmgr I see the following errors:

lab001:~# cardmgr -v
cardmgr[7219]: could not adjust resource: IO ports 0x100-0x3af: Function not implemented
cardmgr[7219]: could not adjust resource: IO ports 0x3e0-0x4ff: Function not implemented
cardmgr[7219]: could not adjust resource: IO ports 0x820-0x8ff: Function not implemented
cardmgr[7219]: could not adjust resource: IO ports 0xc00-0xcf7: Function not implemented
cardmgr[7219]: could not adjust resource: memory 0xc0000-0xfffff: Function not implemented
cardmgr[7219]: could not adjust resource: memory 0xa0000000-0xa0ffffff: Function not implemented
cardmgr[7219]: could not adjust resource: memory 0x60000000-0x60ffffff: Function not implemented
cardmgr[7219]: could not adjust resource: IO ports 0xa00-0xaff: Function not implemented

Any ideas what is causing the input/output error in wvdial on /dev/ttyS0? Is 
that connected to the errors I see when starting cardmgr?

Thanks,
   Josh