Red Hat Bugzilla – Bug 464908
built-in ohci-hcd loaded before ehci-hcd "freezes" Compaq Presario r3004us
Last modified: 2009-12-18 01:28:09 EST
There's something wrong with the USB BIOS (?) of this notebook, that has always caused Linux to freeze when ohci-hcd is initialized before ehci-hcd, if there's any USB (2.0?) device connected (say, an external HD holding a mirror of the root filesystem, or even a simple mouse)
I've always been able to work around this problem by forcing ehci-hcd to be loaded before ohci-hcd, with modprobe.conf magic.
Obviously, this doesn't work when ohci-hcd and ehci-hcd are built-in. ohci-hcd is always initialized first, freezing the system.
Actually... The system doesn't freeze completely: it appears to hang for a while (15-60 seconds), and then continue booting up. I guess I'd never waited that long before, when [oe]hci-hcd were modules...
Since it doesn't really freeze, this is not critical, but it might generate bug-reporting noise, in that people may think the machine actually froze.
This bug appears to have been reported against 'rawhide' during the Fedora 10 development cycle.
Changing version to '10'.
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