Re: [Plug] Modem lost! Puzzledly!

[Andrew Libby <alibby@voicenet.com>]

Let's take some time to consider the modem.  Internal or external?
Jumper or software configured?
You mentioned that you're using COM4 in DOS, what device are you 
using in Linux?  /dev/cua3, /dev/ttyS3?

On Thu, Jun 10, 1999 at 08:40:27PM -0700, Pham Long Trung Duy wrote:
> I had my modem on a windows box, running just fine (not a winmodem).  I
> start play around with PPP and IPmasq on my linux box, so I move the
> modem over linux box, buying a another (unfortunately, pnp win-) modem
> for windows.  After a few test rides, I decided it's not the one for me,
> as when windows get heavily loaded the connection broke.  Taking it back
> to the store and getting the refund is not the problem!  However, the
> problem is, when I tried to re-install my old modem onto the windows box
> (remember?  I cannot get IPmasq working yet), the darn thing won't work.
> 
> Thinking that I probably killed it by static, I still, desperately,
> moved it back to the linux box.  And voila!  It worked!  I could telnet
> to a unix account 2000 miles away.  I'd love to blame Windows and
> Microsoft for it, but I couldn't:  Hate to lose the battle, I bring it
> back to Windows machine, but this time boot it into plain DOS mode, and
> use Telix (minicom-like comm sw for DOS).  Telix can open the COM4
> (supposingly my modem), but the CTS signal is dead, hence unsuccessfully
> communicate to the modem.  
> 
> My next step was to go into BIOS, turning off all the pnp feature.  But
> it doesnt help.  My linux box is a old 486 with ISA/VESA motherboard, no
> pnp at all.  The DOS machine is Pentium 200 Tyan with PCI/ISA and pnp
> BIOS.  I think the problem is at hardware level, but cannot understand
> what difference on the PentiumII motherboard that make the modem won't
> work.  Is it that the software driver for the winmodem reconfigure all
> the pnp things, putting my system (my old modem is also pnp) in wierd
> configuration ?  Or Does BIOS do any pnp configuring at boot even before
> DOS gets loaded?  How come it still work on the old 486?  I even tried
> removing all cards from windows box, leaving just the video and the
> modem card, to eliminate resource conflicts, but still no luck.  What
> went wrong?  What else should I try?
> 
> I hate pnp.  Just give me back my the jumpers.  I CAN read the table!
> 
> I'll try anything to get me out of this mystery!
> 
> thanks for you feedback, btw.
> duy
> 
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