When the system is running the Red Hat Linux operating system and is booting, the system might hang when probing for hardware via kudzu. Typically, the last message on the console before the system hangs is Checking hardware. (CR 6463076)
There is a bug in the OHCI root hub driver for which a root hub enters into the “resume” state but never returns to the “operational” state. The hardware prober kudzu is waiting for the USB driver to respond to its probe and the driver never returns. Consequently, the system hangs and no other services are brought up. Red Hat is aware of this problem and will submit a fix for it.
Take either of the following actions:
Reboot the system – Since the problem is intermittent, it is highly possible that you will not encounter the problem on the next boot cycle.
Disable kudzu – The system will boot with all services started except kudzu. However, the root hub driver can still come up in the described bad state. If this bad state occurs, you will lose keyboard and/or mouse functionality. (See the issue titled “USB Functionality Might Be Lost When Running Red Hat Linux” for further information.)