From mboxrd@z Thu Jan 1 00:00:00 1970 From: Allan Mcintosh Subject: "Found HC with no IRQ" empty /proc/bus/usb Date: Fri, 01 Apr 2005 13:00:40 -0500 Message-ID: <424D8C48.1090804@atreus-systems.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org Hey, On my debian Dual 550MHz Pentium III machine, I am unable to get usb working. I didn't notice anything obvious in the bios that would disable USB. Any suggestions would be greatly appreciated. I have tried several kernels, most recently 2.6.10 and 2.6.11.5. I have also tried booting with variations of append="noapic acpi=off pci=biosirq" Upon loading uhci_hcd module I see the following $ dmesg usbcore: registered new driver usbfs usbcore: registered new driver hub usbcore: registered new driver hiddev usbcore: registered new driver usbhid drivers/usb/input/hid-core.c: v2.0:USB HID core driver USB Universal Host Controller Interface driver v2.2 PCI: Enabling device 0000:00:07.2 (0000 -> 0001) PCI: No IRQ known for interrupt pin C 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! $ lspci -vv 0000:00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01) (prog-if 00 [UHCI]) Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- -- Allan McIntosh Software Designer Atreus Systems, Inc. 613-233-1741 ext: 217 (Office) 613-233-8204 (Fax) amcintosh-sAvY64jVBerkQYj/0HfcvtBPR1lH4CV8@public.gmane.org www.atreus-systems.com ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click