On Sat, 23 Aug 2003, Lars Grunewaldt wrote: > well yes I know, RTFM... but I did, and I have no clues :(
I did too, and found the solution buried somewhere, exectly _where_ i can't remember but i do remember the solution. Go into the system BIOS and disable APIC interrupts (set to PIC mode instead). There is a known bug in APIC interrupt handling in either the USB2 driver or the USB2 APIC mapping for the VIA KT333 and VIA KT400 chipsets (at least). I know the USB "people" are working on getting this information into the FAQ. If you don't see a setting for APIC vs. PIC interrupts in your board, you may need to hit crtl-f1 to enable the "expert" options once you enter the BIOS. I had the exact same problem (devices would work under USB1.x but not USB2.0), then I set the interrupt mode to PIC and everything is working now. I don't notice any performance problems caused by using PIC instead of APIC, even though the [EMAIL PROTECTED]@#$ board seems to want to map every single device to IRQ11. Hope this helps.. -dwild > OK, I have a Asus A7V333-X which has an USB 2.0 controller. I use the > uhci.o kernel module for USB 1.x support, and that works great (like, > devices are recognized), and an up-to-date gentoo system with the > ck6-kernel. > > Now I have an external harddrive with USB 2.0 capability. It works if I > do not load the ehci-hcd module, but of course only as an USB 1.2 (or > so) device. But it is recognized and works with usb-storage. > > But if I load the ehci-hcd module, nothing works any more. I think it's > a problem with the IRQ routing, but I tried nearly anything that's > possible (enabling/disabling plug&play-OS in BIOS, playing with the > kernel parameters from the FAQ), but it only got worse (p&p enabled+ > kernel acpi=off =>> no more IRQ assignable...). I checked > /proc/interrupts, and there are no more interrupts for acpi/uhci/ehci > after the ehci-module is loaded, so it's really obvious that it has > something to do with the IRQ routing. > > So, has anybody experiences with this motherboard and USB 2.0, or any > other suggestion? > > thanks, > Lars > > > > ------------------------------------------------------- > This SF.net email is sponsored by: VM Ware > With VMware you can run multiple operating systems on a single machine. > WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines > at the same time. Free trial click here:http://www.vmware.com/wl/offer/358/0 > _______________________________________________ > [EMAIL PROTECTED] > To unsubscribe, use the last form field at: > https://lists.sourceforge.net/lists/listinfo/linux-usb-users > ------------------------------------------------------- This SF.net email is sponsored by: VM Ware With VMware you can run multiple operating systems on a single machine. WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the same time. Free trial click here:http://www.vmware.com/wl/offer/358/0 _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
