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Re: [Xen-users] USB devices in dom0 failing to accept address

On Thu, 2013-06-27 at 10:01 +0000, Andy Hawkins wrote:
> Hi,
> In article <1372320313.28443.3.camel@xxxxxxxxxxxxxxxxxxxxxx>,
>            Ian Campbell<Ian.Campbell@xxxxxxxxxx> wrote:
> > OK, then I'm a bit confused about under which circumstances you are
> > seeing the various issues.
> >
> > Are you saying that a native boot of Linux (without Xen) with no
> > commandline acpi=noirq parameters works, or that it locks up?
> >
> > If you boot natively (no Xen) with acpi=noirq does USB work?
> Sorry, I probably should have been a bit more clear. Here's the sequence of
> events when I got the machine:
> 1. Boot from Debian installer via USB, install Debian. USB keyboard etc. all
> fine
> 2. Finish installing Debian, reboot. Locks up during boot.

OK, so you have an issue with the native kernel on this hardware. It is
probably worth resolving this (perhaps via a Debian bug report, unless
BIOS update helps) before going on to worry about Xen.

Presumably the version of the installer you picked up had a slightly
different kernel to the one which actually ended up installed. If you
can identify which is which then that might be useful information for
the Debian bug report.

> 3. Add 'acpi=noirq' to kernel command line, boots fine. I *believe* the USB
> keyboard was still working at this point, although I may have done the
> remainder of the configuration via SSH. However, I tend to tell Debian to
> install no packages, then add SSH from the command line after the install
> has finished.
> 4. Install Xen and XCP. Reboot into Xen. Keyboard no longer works, USB
> errors displayed on console and in dmesg.

If at this point you remove the noirq thing does it work under Xen?

> Hope that's a bit more clear. 
> I'll try to check the BIOS version and upgrade it if necessary, but the
> machine is now in the loft!  As far as hardware goes, there's nothing
> connected to the motherboard apart from CPU, RAM and two SATA disks.
> It's one of these if it's relevant:
> http://www.jetwaycomputer.com/NF9E.html
> Andy
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