freebsd stable - Sep 2004 - Spontaneous 4.7-S reboots when using a Serial over USB adapter

I have noticed that if I disconnect the serial port from my usb to serial
adapter and leave the dongle
in(Aten International Serial adapter,  SiS 5571 usb controller),  my machine
will reset as soon as I
[Attempt to] send data from the usb side.  So maybe you are losing carrier
signal sometime during the
transfer.  Another machine with a Via 83C572 USB controller does the same thing.

Sis is running 4.7 Stable from Jan 2 2003.
Via is running 4.6 Stable from Aug 23 2002.



-=Bill


Hans Lambermont wrote:
> Some more info: setting the serial line speed from 115200 baud down to
> 9600 does not help; after a few minutes syncing my palmpilot I got
> another reboot. Is anyone succesfully using a Prolific Technology PL2303
> Serial adapter with a 82801CA/CAM ICH3 USB controller ?
> Any hints are welcome.
>
> I got no response yet to my previous mail:
>
> > I'm seeing spontaneous reboots when using a Prolific Technology
PL2303
> > Serial adapter (this is a serial to USB convertor) for a palm-pilot
full
> > backup (using pilot-xfer) on one of my FreeBSD 4.7-STABLE machines.
> > The reboots are reproduceable. Nothing shows up in the logs.
> > Small data transfers, like syncing my addressbook, go without
problems.
> >
> > Here is the problem-box relevant dmesg log:
> >
> > FreeBSD 4.7-STABLE #2: Sat Oct 26 16:36:31 CEST 2002
> > uplcom0: Prolific Technology PL2303 Serial adapter (ATEN/IOGEAR
UC232A), rev 1.10/2.02, addr 2
> > uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port
0xb400-0xb41f irq 9 at device 4.2 on pci0
> > usb0: <Intel 82371AB/EB (PIIX4) USB controller> on uhci0
> > usb0: USB revision 1.0
> >
> > My other FreeBSD 4.7-STABLE machine runs the backup without problems
> > using the same PL2303 Serial adapter (and palm pilot ;-).
> >
> > FreeBSD 4.7-STABLE #0: Sat Oct 26 19:16:48 CEST 2002
> > uplcom0: Prolific Technology PL2303 Serial adapter (ATEN/IOGEAR
UC232A), rev 1.10/2.02, addr 2
> > uhci0: <Intel 82801CA/CAM (ICH3) USB controller USB-A> port
0x1800-0x181f irq 10 at device 29.0 on pci0
> > usb0: <Intel 82801CA/CAM (ICH3) USB controller USB-A> on uhci0
> > usb0: USB revision 1.0
> >
> > But it has a different USB controller chipset.
> >
> > Is this perhaps a known issue with the 82801CA/CAM ICH3 USB controller
?
>
> regards,
>    Hans Lambermont
> --
> http://lambermont.webhop.org/
>
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