[Pkg-xfce-devel] Bug#713832: xfwm4: Video lags in Debian Wheezy XFCE with compositing enabled

[Donald Broatch]

Package: xfwm4
Version: 4.8.3-2
Severity: normal

Dear Maintainer,

I've installed Debian Wheezy XFCE on an old laptop. 
I found that playing video was a problem- in default resolution, 
a lot of frames were dropped. In full screen, 
there was severe lag and image break up. 

If I disable compositing, this problem goes away. 
A Live USB Debian Squeeze XFCE session plays video OK
with compositing enabled, so it looks like a bug in the
Debian Wheezy version of XFCE windows manager compositing
with this particular hardware (I have the same set up on another laptop
with no issues).

-- System Information:
Debian Release: 7.0
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 3.2.0-4-686-pae (SMP w/1 CPU core)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages xfwm4 depends on:
ii  libc6                     2.13-38
ii  libdbus-glib-1-2          0.100.2-1
ii  libgdk-pixbuf2.0-0        2.26.1-1
ii  libglib2.0-0              2.33.12+really2.32.4-5
ii  libgtk2.0-0               2.24.10-2
ii  libpango1.0-0             1.30.0-1
ii  libstartup-notification0  0.12-1
ii  libwnck22                 2.30.7-1
ii  libx11-6                  2:1.5.0-1
ii  libxcomposite1            1:0.4.3-2
ii  libxdamage1               1:1.1.3-2
ii  libxext6                  2:1.3.1-2
ii  libxfce4ui-1-0            4.8.1-1
ii  libxfce4util4             4.8.2-1
ii  libxfconf-0-2             4.8.1-1
ii  libxfixes3                1:5.0-4
ii  libxrandr2                2:1.3.2-2
ii  libxrender1               1:0.9.7-1

Versions of packages xfwm4 recommends:
ii  librsvg2-common  2.36.1-1
ii  xfwm4-themes     4.6.0-3

Versions of packages xfwm4 suggests:
ii  xfce4  4.8.0.3

-- no debconf information