Filter
Top Products
Support Note for Red Hat Linux Advanced Workstation 2.1 Operating System on Itanium® 2-based Systems
Known Problems
Chapter 1 11
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.)
6. CDRW software and CD creation with Red Hat Advanced Workstation 2.1 on the zx2000.
Creating a CD using the CDRW software available in Red Hat Advanced Workstation 2.1
takes more than 12 minutes if using CD speed 24x for a 640MB file. HP recommends
using CD speed 12x, which shortens creation time to 10 minutes. The command to change
CD speed is: cdrecord -v speed=12 dev=2,0,0 filename.iso
Refer to online help for more details on the cdrecord command.
7. IDE support issues.
a. The zx2000 IDE controller is set to serialized accesses to the two channels (Optical
and HDD). HP does not support disabling serialization for the IDE controller.
b. IDE HDD operations can take three to four times longer to complete when running
simultaneously with CD-RW operation than when running without them.
8. 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.