I'm still having this issue in Fedora 31, so I've opened:
Bug 1779258 - Virt-viewer Duplicating Display 1
On Display 2
<https://bugzilla.redhat.com/show_bug.cgi?id=1779258>
Nonetheless, I'm open to suggestions on how to troubleshoot this,
please. Thanks.
On 2019-11-19 15:48 UTC-05:00, B. H. wrote:
I'm running a virtual Fedora 29 desktop on a Fedora 29 QEMU/KVM
virtualization server. I've configured my virtual desktop machine to
have 2 displays, and I use virt-viewer to view & interact with this
virtual desktop machine.
This has generally worked, but lately virt-viewer has been
duplicating guest display 1's output to guest display 2. I've `lost`
the output that should be going to guest display 2.
At first I thought my window manager (Xfce) was screwing up by
mirroring the displays, even though that option is disabled. But then I
noticed some things that convinced me the problem is not with Xfce:
1. When Xfce is configured to put the displays side-by-side (but
it looks like they are mirrored) I cannot interact with the
items displayed in guest display 2. My mouse can only interact
with desktop items on guest display 1. They move on display 2 when
I move them on display 1, but not the reverse.
Conversely, if I change Xfce to truly mirror my displays, I
can interact with desktop items with my mouse on either
virt-viewer display.
2. When Xfce is configured to put the displays side-by-side (but
it looks like they are mirrored) my workspace switcher shows
a 2560x1024 desktop. Conversely, if I change Xfce to truly mirror
my displays, my workspace switcher shows a 1280x1024 desktop.
I believe the relevant output from "virsh dumpxml {virt_machine}" is:
<channel type='spicevmc'>
<target type='virtio' name='com.redhat.spice.0' state='connected'/>
<alias name='channel0'/>
<address type='virtio-serial' controller='0' bus='0' port='1'/>
</channel>
<channel type='unix'>
<source mode='bind'
path='/var/lib/libvirt/qemu/channel/target/domain-10-desktop/org.qemu.guest_agent.0'/>
<target type='virtio' name='org.qemu.guest_agent.0'
state='connected'/>
<alias name='channel1'/>
<address type='virtio-serial' controller='0' bus='0' port='2'/>
</channel>
<graphics type='spice' keymap='en-us'>
<listen type='none'/>
<image compression='off'/>
<gl enable='no'
rendernode='/dev/dri/by-path/pci-0000:01:00.0-render'/>
</graphics>
<video>
<model type='virtio' heads='2' primary='yes'>
<acceleration accel3d='yes'/>
</model>
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02'
function='0x0'/>
</video>
I'm at a loss on how to troubleshoot this. Any suggestions, please?
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