Bug 94950

Created attachment 122969 [details] [review]
Patch for spice-gtk3-0.31

Issue applies also to the latest release spice-gtk-0.31. I have attached a sample patch for spice-gtk3 based on http://koji.fedoraproject.org/koji/taskinfo?taskID=13408204 which itself referred to http://lists.freedesktop.org/archives/spice-devel/2015-October/022730.html.

Hi, the issue is avoided upstream by the commit:
https://cgit.freedesktop.org/spice/spice-gtk/commit/?id=ec6bfc00f81afddbdcc0fac86d7039385d89c6b6

Still not fixed

(In reply to Pavel Grunt from comment #3)
The attached patch -does- fix the issue in spice-gtk-0.31; also see

  https://bugzilla.redhat.com/show_bug.cgi?id=1330824 .

The problem is that your tentative Fedora 23 scratch build

  http://koji.fedoraproject.org/koji/taskinfo?taskID=13408204

-did- implement the equivalent (working) patch for spice-gtk-0.30 which, however, was -not- what you had implemented in the later regular Fedora errata.

(In reply to Joachim Frieben from comment #4)
> (In reply to Pavel Grunt from comment #3)
> The attached patch -does- fix the issue in spice-gtk-0.31; also see
> 
>   https://bugzilla.redhat.com/show_bug.cgi?id=1330824 .
> 
> The problem is that your tentative Fedora 23 scratch build
> 
>   http://koji.fedoraproject.org/koji/taskinfo?taskID=13408204
> 
> -did- implement the equivalent (working) patch for spice-gtk-0.30 which,
> however, was -not- what you had implemented in the later regular Fedora
> errata.

I still don't understand what wayland / mutter does differently, ie what causes the problem. So far I don't find anything wrong in spice-gtk.

There are several ways how to workaround it. Till the issue is there I recommend to use virt-viewer or remote-viewer for connecting to vms.

(In reply to Pavel Grunt from comment #5)
The original patch used for scratch build http://koji.fedoraproject.org/koji/taskinfo?taskID=13408204 worked well. Just use that one (or the equivalent above patch for spice-gtk(3)-0.31) and everybody will be happy; .. no need to look elsewhere! I have been successfully using a locally built and patched version of spice-gtk(3)-0.31 on my Fedora 24 box for weeks now.

Note, I have seen the exact same thing on XFCE4 running spicy on x11-base/xorg-server-1.18.3

  When VDA-Agent starts up, I get a continuous flicker of the screen.
  This is almost like a screen refresh, where I am not even able to
  really click on things and/or open menus.

  Running Windows 10, x64

  app-emulation/spice-0.13.1-r2::gentoo
  net-misc/spice-gtk-0.31::gentoo
  app-emulation/spice-protocol-0.12.11::gentoo
  app-emulation/qemu--2.6.0::gentoo
  nvidia-drivers-367.18
  xorg-server-1.18.3

  Kernel string:

  Linux wks-ros 4.4.11 #6 SMP PREEMPT Mon May 30 00:01:35 MDT 2016
  x86_64 Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz GenuineIntel GNU/Linux


I ended up filing a bug under QEMU: 
https://bugs.launchpad.net/qemu/+bug/1592315

Issue is still present for the latest upstream release spice-gtk-0.32.

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You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/spice/spice-gtk/issues/33.