Support Notes for UnitedLinux Partner Distributions on Itanium 2-based Servers

Support Note for UnitedLinux Partner Distributions on Itanium® 2-based Servers
Known Problems
Chapter 18
Known Problems
1. No support for uncertified .rpm packages
If you add uncertified .rpms to UnitedLinux partner distributions, they will not be
supported. Only .rpms bundled in supported Linux distributions for Itanium 2-based
servers and official patches for UnitedLinux partner distributions will be supported.
2. No support for systems with a recompiled kernel.
Although you may recompile your kernel to change configuration parameters, HP does not
support systems on which you have recompiled your kernel for any other reason, e.g. for
kernel source code changes.
Supported customizations:
a. Modifying configuration options found in
/usr/src/linux-version-versionnumber/configs to set values or make modules
static or dynamically loadable.
b. Changing boot-time parameters found in
/usr/share/doc/kernel-doc-2.4.18/kernel-parameters.txt (with the
kernel-doc .rpm) or in
/usr/src/linux-2.4/Documentation/kernel-parameters.txt (with the
kernel-source /rpm.)
3. USB conflicts and system reboots.
Configurations that include a USB 1.1 mass storage device under the same OHCI root
hub as the USB keyboard can cause conflicts resulting in system reboot. You can use the
"usbview" tool to view the topology of the USB root hubs to avoid such configurations. If
improperly configured, refreshing the data in usbview while the USB mass storage device
is being accessed may cause your system to reboot.
To view the topology using usbview:
a. Launch usbview
b. Attach the USB mass storage device
c. If usbview shows both the mass storage device and the USB keyboard under the same
OHCI root hub, relocate the mass storage device to a different USB port
d. Close usbview before using the mass storage device and do not reopen it or any other
applications that use usbdevfs while using the device.