Owner's Manual

20 Installation Instructions and Important Information
drivers/usb/input/hid-core.c: input irq status -71
received
This issue occurs because the hid-core driver misunderstands a status
received from the ehci-hcd driver and prevents the system from shutting
down or rebooting. To work around this issue, run the following line before
exec $command $HALTARGS in the shutdown script —
/etc/rc.d/init.d/halt:
echo "6 4 1 4" > /proc/sys/kernel/printk
This changes the default console log level from 7 to 4 and prevents the
message. A fix for this issue is available in Red Hat Enterprise Linux 4 Update 5.
USB Devices May Not Function or May Behave Strangely on AMD Processor-Based
Systems
USB devices such as keyboards or mouse may not function or may behave
strangely on AMD processor-based systems. This could be either due to the
devices not working properly even though it shows up in lsusb or the USB
hub not reporting devices connected to the system.
This occurs due to an issue in the USB code in Red Hat Enterprise Linux 4
where a 10 ms delay required by the USB 2.0 specification is not
implemented.
A fix for this issue is available in Red Hat Enterprise Linux 4 Update 5.
Direct Memory Access is Not Used on Internal CD Drives With AMD Processor-
Based Systems
Red Hat Enterprise Linux 4 does not use direct memory access (DMA) on
internal CD drives with AMD processor-based systems.
This is because the IDE driver in Red Hat Enterprise Linux 4 does not
recognize the IDE controllers on AMD processor-based systems and the IDE
controllers are used in legacy mode.
A fix for this issue is available in Red Hat Enterprise Linux 4 Update 5.
Kernel Panic Occurs During Red Hat Enterprise Linux 4 Update 4 Installation on
PowerEdge Systems
While installing Red Hat Enterprise Linux 4 Update 4 on PowerEdge 6800
and PowerEdge 6850 systems, a kernel panic may occur.
RHELIIG.book Page 20 Thursday, April 14, 2011 12:15 PM