The following reply was made to PR usb/156596; it has been noted by GNATS. From: Hans Petter Selasky <[email protected]> To: [email protected], [email protected] Cc: Subject: usb/156596: [ehci] Extremely high interrupt rate on ehci/uhci IRQ16 80% cpu utilization on CPU0 Date: Sun, 24 Apr 2011 10:26:52 +0200
Hi, Compile a kernel with: options USB_DEBUG Then enable after boot: sysctl hw.usb.ehci.debug=15 ; sleep 1; sysctl hw.usb.ehci.debug=0 sysctl hw.usb.uhci.debug=15 ; sleep 1; sysctl hw.usb.uhci.debug=0 The high interrupt rate might be caused by a non-cleared IRQ. Else it is an ACPI issue. --HPS _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "[email protected]"
