03-03-2011
Had the Same problems with my SCO servers.
It turned out to be APC Powerchute software. If you are using the old powerchute software stop it, uninstall it and only use the software that comes with SCO 6 (mkdev apc). The core problem is with the serial ports, there is something in the serial ports that can cause software that worked great with sco 5.07 to cause SCO 6 to freeze. They changed the way that the serial ports work. So if you are not using APC powerchute software, check any software that uses serial ports.
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UHSO(4) BSD Kernel Interfaces Manual UHSO(4)
NAME
uhso -- support for several HSxPA devices from Option N.V.
SYNOPSIS
The module can be loaded at boot time by placing the following line in loader.conf(5):
uhso_load="YES"
DESCRIPTION
The uhso driver provides support for several HSxPA devices from Option N.V. that are based on their packet interface. Each device has a set
of serial ports and a raw IP packet interface. The serial ports of the device are accessed through the ucom(4) driver which makes them
behave like tty(4) devices. The packet interface is exposed as a network interface.
Establishing a connection on the packet interface is achieved by using the proprietary AT commands ``AT_OWANCALL'' and ``AT_OWANDATA'' on any
of the available serial ports.
The network interface must be configured manually using the data obtain from these calls.
Each device usually have at least two or more serial ports, their individual purpose can be identified through sysctl(8). Ports identified
as ``Modem'' features a normal modem interface that can be used with PPP. Ports identified as ``Diagnostic'' uses a proprietary binary
interface used for firmware upgrades, this port does not have a AT command interface and can not be used to control the device. Other ports
features an AT command interface that can be used for normal device control.
HARDWARE
The uhso driver should work with most devices from Option. The following devices have been verified to work
o Option GlobeSurfer iCON 7.2 (new firmware)
o Option iCON 225
o Option iCON 452
o Option iCON 505
The device features a mass storage device referred to as ``Zero-CD'' which contains drivers for Microsoft Windows; this is the default mode
for the device. The uhso driver automatically switches the device from ``Zero-CD'' mode to modem mode. This behavior can be disabled by
setting hw.usb.uhso.auto_switch to 0 using sysctl(8)
EXAMPLES
Establishing a packet interface connection using the AT command interface available at one of the serial ports
AT+CGDCONT=1,,"apn.provider"
AT_OWANCALL=1,1,1
OK
_OWANCALL=1,1
AT_OWANDATA=1
_OWANDATA: 1, 10.11.12.13, 0.0.0.0, 10.2.3.4, 10.2.3.5,
0.0.0.0, 0.0.0.0, 72000
Configuring the interface
ifconfig uhso0 10.11.12.13 up
route add default -interface uhso0
echo "nameserver 10.2.3.4" > /etc/resolv.conf
echo "nameserver 10.2.3.5" >> /etc/resolv.conf
The connection can be terminated with
AT_OWANCALL=1,0,1
FILES
/dev/cuaU?.?
SEE ALSO
ucom(4), usb(4)
AUTHORS
The uhso driver was written by Fredrik Lindberg <fli@shapeshifter.se>.
BSD
January 14, 2010 BSD