Bug#923360: mate-desktop: Xorg under mate consuming cpu

[Frank McCormick <beacon@videotron.ca>]

Package: mate-desktop
Version: 1.20.4-2
Severity: normal

After an 82 package update today xorg is consuming updare of 20-25% of
cpu time.

This happens ONLY under Mate, Cinnamon is not affected and when I
log into my IceWm, xorg load is normal.




-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_CA:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages mate-desktop depends on:
ii  hicolor-icon-theme        0.17-2
ii  libatk1.0-0               2.30.0-2
ii  libc6                     2.28-7
ii  libcairo-gobject2         1.16.0-3
ii  libcairo2                 1.16.0-3
ii  libgdk-pixbuf2.0-0        2.38.0+dfsg-7
ii  libglib2.0-0              2.58.3-1
ii  libgtk-3-0                3.24.5-1
ii  libmate-desktop-2-17      1.20.4-2
ii  libpango-1.0-0            1.42.4-6
ii  libpangocairo-1.0-0       1.42.4-6
ii  libstartup-notification0  0.12-6
ii  libxrandr2                2:1.5.1-1
ii  mate-desktop-common       1.20.4-2

Versions of packages mate-desktop recommends:
pn  mate-user-guide  <none>

Versions of packages mate-desktop suggests:
ii  mate-desktop-environment  1.20.0+5

-- no debconf information