Hello, I have following configuration: - mips-Au1000-processor (PB1000-board from Alchemy-Semiconductor) - _no_ USB-devices connected - linux from the Montavista-Tree (downloaded in December from www.alchemysemi.com)(Kernel "2.4.2_hhl20") - prebuilt crosscompiler from Montavista (downloaded in December from www.alchemysemi.com) During booting the kernel initalizes the usb-device-driver and a little later prints "USB device not accepting new address...": >>>> usb.c: registered new driver usbdevfs usb.c: registered new driver hub usb-ohci.c: USB OHCI at membase 0xb0100000, IRQ 26 usb-ohci.c: usb-builtin, non-PCI OHCI usb.c: new USB bus registered, assigned bus number 1 Product: USB OHCI Root Hub SerialNumber: b0100000 hub.c: USB hub found hub.c: 2 ports detected usb-ohci.c: v5.2 Roman Weissgaerber <weissg@vienna.at>, David Brownell usb-ohci.c: USB OHCI Host Controller Driver usb.c: registered new driver hid mice: PS/2 mouse device common for all mice NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 4096 bind 4096) Sending BOOTP requests.... OK IP-Config: Got BOOTP answer from 192.168.65.17, my address is 192.168.65.240 NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. Serial driver version 1.01 (2001-02-08) with no serial options enabled ttyS00 at 0xb1100000 (irq = 0) is a 16550 ttyS01 at 0xb1200000 (irq = 1) is a 16550 ttyS02 at 0xb1300000 (irq = 2) is a 16550 ttyS03 at 0xb1400000 (irq = 3) is a 16550 Looking up port of RPC 100003/2 on 192.168.65.17 Looking up port of RPC 100005/2 on 192.168.65.17 hub.c: USB new device connect on bus1/1, assigned device number 2 usb.c: USB device not accepting new address=2 (error=-145) <---------???? VFS: Mounted root (nfs filesystem) readonly. Freeing unused kernel memory: 64k freed Algorithmics/MIPS FPU Emulator v1.5a hub.c: USB new device connect on bus1/1, assigned device number 3 usb.c: USB device not accepting new address=3 (error=-145) <---------???? <<<< I wonder what I could have done wrong. The switches on the board are set accordingly the Montavista-faq.txt. I could verify these settings with the schematics of the board. After booting, when I plug in an USB-device, the same error messages are repeated. As far as I know USB should work with this kernel. So maybe this is a hardware failure ? I reduced the CPU-frequency from 396MHz to 120MHz, but this didn't help, too. The same messages appear, when I plug the device in the other USB-connector on the board. It's no problem with the power, because I could verify that there are 5Volt on the USB-connector. Probably someone already knows the solution, because this is not a special configuration. Thanks in advance -- Wolfgang