On Thu, Sep 3, 2015 at 2:29 AM, Robert Nichols
<rnicholsNOSPAM@xxxxxxxxxxx> wrote:
> I have a PCI sound card that I would like to assign to a VM, but
> when I try to do so the VM fails to start and displays this message:
>
> Error starting domain: Unable to read from monitor: Connection reset by peer
>
> Traceback (most recent call last):
> File "/usr/share/virt-manager/virtManager/asyncjob.py", line 44, in
> cb_wrapper
> callback(asyncjob, *args, **kwargs)
> File "/usr/share/virt-manager/virtManager/asyncjob.py", line 65, in tmpcb
> callback(*args, **kwargs)
> File "/usr/share/virt-manager/virtManager/domain.py", line 1125, in
> startup
> self._backend.create()
> File "/usr/lib64/python2.6/site-packages/libvirt.py", line 686, in create
> if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
> libvirtError: Unable to read from monitor: Connection reset by peer
>
> The XML generated by virt-manager for the device is
>
> <hostdev mode='subsystem' type='pci' managed='yes'>
> <source>
> <address domain='0x0000' bus='0x07' slot='0x04' function='0x0'/>
> </source>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x06'
> function='0x0'/>
> </hostdev>
>
> The sound card is an Asus Xonar DGX PCIe 5.1, and identifies itself
> as "07:04.0 Multimedia audio controller: C-Media Electronics Inc CMI8788
> [Oxygen HD Audio]".
>
> I see the same problem if I try to assign the motherboard's Intel
> Xeon E3-1200 HD Audio Controller to the VM. Both of these devices
> are supported by the host kernel (3.18.17-13.el6.x86_64).
>
> I have no problem assigning a USB sound device, but those have very
> limited capability.
Which hypervisor / CentOS version are you using?
-George
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