Hello fellow users, first post here so please bear with me.

I'm having a problem with plasma desktop flickering after resuming from suspend. Every time I resume I see some flickering noticeable by some stripes showing in the panel and general desktop jittering and slow response.
I've seen this with effects on or off, though they are usually off. Killing plasma-desktop and relaunching it fixes the problem but only for a few seconds.

I've tried taking a screenshot of the flickering and stripes but to no avail, for some reason this doesn't show in the images. Here's an example of what it looks like:

So far the only way I've found to make it stop is to reboot or to logout/login.

I'm using Kubuntu 14.10 with KDE 4.14.2, kernel is 3.16.0

Note: Have seen this in Fedora 21 KDE 4.14.4, have not seen it with Fedora 21 XFCE or Xubuntu 14.10

Any help will be deeply appreciated

can you paste the graphics hardware and driver being used and the Kwin info

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qdbus org.kde.kwin /KWin supportInformation

does restarting Kwin help ?

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kwin --replace

HI, here's the first info you request: https://paste.kde.org/pv2bazhuo
And no, restarting kwin had no effect.
Thanks.

Sorry forgot hardware:
01:05.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RS880M [Mobility Radeon HD 4225/4250]

And driver is whatever the standard is, I'm not using special or propietary driver

if you run the qdbus command again with compositing on the driver used should be listed in the [compositing] section, it may be useful for someone when they try and assist

amoknemo wrote:And driver is...

Whatever "glxinfo" and /var/log/Xorg.0.log tell you.

I bet on radeon and color tiling and/or glamor, but that's just a wild shot for the moment. (Could just as well be EXAPixmaps

So this is what compositing throws:

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Compositing
===========
Qt Graphics System: native
Compositing is active
Compositing Type: OpenGL
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD RS880
OpenGL version string: 3.0 Mesa 10.3.2
OpenGL shading language version string: 1.30
Driver: R600G
GPU class: R600
OpenGL version: 3.0
GLSL version: 1.30
Mesa version: 10.3.2
X server version: 1.16
Linux kernel version: 3.16
Direct rendering: yes
Requires strict binding: no
GLSL shaders:  yes
Texture NPOT support:  yes
Virtual Machine:  no
OpenGL 2 Shaders are used
Painting blocks for vertical retrace:  no


Glxinfo also says something about Gallium 0.4 being used.