Re: 2.6.14-rc4 echi_hcd hangs machine

From: Greg KH
Date: Wed Oct 12 2005 - 12:12:04 EST

On Wed, Oct 12, 2005 at 10:45:33AM +0200, Borislav Petkov wrote:
> Hi Greg,
> I tried to boot 14-rc4 yesterday but it fails when it reaches the init code
> forthe usb host controllers und freezes the machine totally:
> <snip>
> [4294687.294000] usb usb3: Manufacturer: Linux 2.6.14-rc4 uhci_hcd
> [4294687.300000] usb usb3: SerialNumber: 0000:00:1d.2
> [4294687.321000] hub 3-0:1.0: USB hub found
> [4294687.326000] hub 3-0:1.0: 2 ports detected
> [4294689.363000] ACPI: PCI Interrupt 0000:00:1d.7[D] -> GSI 23 (level, low) -> IRQ 20
> [4294689.372000] ehci_hcd 0000:00:1d.7: EHCI Host Controller
> [4294689.378000] ehci_hcd 0000:00:1d.7: debug port 1
> <EOF>
> </snip>
> This happens with rc3 too so I thought it had something in common with this bug:
> but it doesn't seem so. I've got
> USB debugging enabled but the above is all you get over the serial console. The
> rc? series don't have a kernel debugger so is there any other way to debug this?

Can you file a new bug at and we can take it from


greg k-h
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