On Wednesday 14 January 2009 3:34:41 pm Russell Bell wrote: > We upgraded our Internet server to CentOS 5 from RedHat 4. > Now we can't use the USB port. dmesg returns: > > usbcore: deregistering driver usb-storage > Initializing USB Mass Storage driver... > usbcore: registered new driver usb-storage > USB Mass Storage support registered. > USB Universal Host Controller Interface driver v3.0 > PCI: Enabling device 0000:00:07.2 (0000 -> 0001) > PCI: No IRQ known for interrupt pin D of device 0000:00:07.2. Probably > buggy MP table. > uhci_hcd 0000:00:07.2: Found HC with no IRQ. Check BIOS/PCI 0000:00:07.2 > setup! uhci_hcd 0000:00:07.2: init 0000:00:07.2 fail, -19 > PCI: Enabling device 0000:00:07.3 (0000 -> 0001) > PCI: No IRQ known for interrupt pin D of device 0000:00:07.3. Probably > buggy MP table. > uhci_hcd 0000:00:07.3: Found HC with no IRQ. Check BIOS/PCI 0000:00:07.3 > setup! uhci_hcd 0000:00:07.3: init 0000:00:07.3 fail, -19 > I had this issue in my desktop PC, and I solved it by using these two parameters on the kernel commandline (check /etc/grub.conf): irqpoll pci=routeirq Try one of these options and see if some helps you. Regards. GERMAN ANDRES PULIDO F. Ingeniero de Proyectos GLOBAL TECHNOLOGY SERVICES - GTS S.A. ------------------------------------- Tel: (571) 658 34 10 ext 110 Carrera 7b No. 123-46 Bogotá-Colombia Sitio Web: www.gtscolombia.com