These issues all seem to be occurring with Intel based cards. Try switching to XRender as recommended in the other thread.

For anyone using Intel i8xx/i9xx chipsets family can easily fix this issue by using git version of intel graphics driver from glasen ppa, read more here: http://ubuntuku.org/10/how-to-fix-intel ... -maverick/

bcooksley wrote:These issues all seem to be occurring with Intel based cards. Try switching to XRender as recommended in the other thread.

It helped but some effects for example cube are not working...

ubuntuku wrote:For anyone using Intel i8xx/i9xx chipsets family can easily fix this issue by using git version of intel graphics driver from glasen ppa, read more here: http://ubuntuku.org/10/how-to-fix-intel ... -maverick/

I try this fix and it is working. But kwin is still very slow in comparison to compiz and kwin totaly freeze when I use the windows preview effect. Then I have to kill kwin

I tried the drivers fix and it works great for me! I almost forgot to switch my composting back to OpenGL, but everything seems to be redrawing just great. Thank you!

Hi ! (sorry for my bad english)

happy to find this post because for explain my problem...

I have got a same problem in kubuntu 10.10 (32) with kde sc 4.6 (no problem before with 4.5.X) with intel video card. I have got 4 desktops.

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00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)

blur effect is off too but same problem.

xorg.conf :

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Section "Files"
   FontPath   "/usr/share/fonts/X11/misc"
   FontPath   "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
   #   FontPath   "/usr/share/X11/fonts/misc"
   #   FontPath   "/usr/share/X11/fonts/100dpi/:unscaled"
   #   FontPath   "/usr/share/X11/fonts/75dpi/:unscaled"
   #   FontPath   "/usr/share/X11/fonts/Type1"
   #   FontPath   "/usr/share/X11/fonts/100dpi"
   #   FontPath   "/usr/share/X11/fonts/75dpi"
   # path to defoma fonts
EndSection

Section "Monitor"
   Identifier   "Generic Monitor"
   Option      "DPMS"
EndSection

Section "Screen"
   Identifier   "Default Screen"
   Device      "Intel Corporation Mobile Integrated Graphics Controller"
   Monitor      "Generic Monitor"
   DefaultDepth   24
   SubSection "Display"
      Depth      1
      Modes      "1280x800"
   EndSubSection
   SubSection "Display"
      Depth      4
      Modes      "1280x800"
   EndSubSection
   SubSection "Display"
      Depth      8
      Modes      "1280x800"
   EndSubSection
   SubSection "Display"
      Depth      15
      Modes      "1280x800"
   EndSubSection
   SubSection "Display"
      Depth      16
      Modes      "1280x800"
   EndSubSection
   SubSection "Display"
      Depth      24
      Modes      "1280x800"
   EndSubSection
EndSection

Section "Module"
   Load   "i2c"
   Load   "bitmap"
   Load   "ddc"
   Load   "dri"
   Load   "extmod"
   Load   "freetype"
   Load   "glx"
   Load   "int10"
   Load    "dbe"
   Load   "vbe"
   Load   "synaptics"
   #   Load   "type1"
EndSection

Section "DRI"
   Mode   0666
EndSection

Section "Extensions"
   Option "RENDER" "Enable"
           Option "Composite" "Enable"
EndSection

Section "ServerLayout"
   Identifier   "Default Layout"
   Screen      "Default Screen"
           Option "AIGLX" "true"
   # commented out by update-manager, HAL is now used
   #   InputDevice   "Generic Keyboard"
   # commented out by update-manager, HAL is now used
   #   InputDevice   "Configured Mouse"
   #   InputDevice     "stylus" "SendCoreEvents"
   #   InputDevice     "cursor" "SendCoreEvents"
   #   InputDevice     "eraser" "SendCoreEvents"
   # commented out by update-manager, HAL is now used
   #   InputDevice   "Synaptics Touchpad"
EndSection

Section "Device"
   Identifier   "Intel Corporation Mobile Integrated Graphics Controller"
   Driver      "intel"
#   Option "AccelMethod" "EXA"
#   Option "MigrationHeuristic" "greedy"   
   Option "AccelMethod" "uxa"
#   Option "FramebufferCompression" "true"
#   Option "Legacy3D" "true"   
#        Option "XAANoOffscreenPixmaps"
   BusID      "PCI:0:2:0"
   #   Driver      "i810"
EndSection

Section "ServerFlags"
   Option   "DontZap"   "False"
EndSection

kwinrc :

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[Compositing]
AnimationSpeed=3
Backend=OpenGL
DisableChecks=false
Enabled=true
GLDirect=true
GLMode=TFP
GLTextureFilter=2
GLVSync=false
HiddenPreviews=5
OpenGLIsUnsafe=false
UnredirectFullscreen=true
XRenderSmoothScale=false

[Desktops]
Name_1=
Name_2=
Name_3=
Name_4=
Number=4

[Effect-BoxSwitch]
TabBox=false

[Effect-FlipSwitch]
TabBox=false

[Effect-PresentWindows]
TabBox=false

[Plugins]
kwin4_effect_blurEnabled=false
kwin4_effect_boxswitchEnabled=true
kwin4_effect_coverswitchEnabled=true
kwin4_effect_cubeEnabled=true
kwin4_effect_cubeslideEnabled=true
kwin4_effect_dashboardEnabled=true
kwin4_effect_desktopgridEnabled=true
kwin4_effect_dialogparentEnabled=true
kwin4_effect_diminactiveEnabled=false
kwin4_effect_dimscreenEnabled=false
kwin4_effect_explosionEnabled=false
kwin4_effect_fadeEnabled=false
kwin4_effect_fadedesktopEnabled=false
kwin4_effect_fallapartEnabled=false
kwin4_effect_flipswitchEnabled=false
kwin4_effect_glideEnabled=false
kwin4_effect_highlightwindowEnabled=true
kwin4_effect_invertEnabled=false
kwin4_effect_loginEnabled=true
kwin4_effect_logoutEnabled=true
kwin4_effect_lookingglassEnabled=false
kwin4_effect_magiclampEnabled=false
kwin4_effect_magnifierEnabled=false
kwin4_effect_minimizeanimationEnabled=true
kwin4_effect_mousemarkEnabled=false
kwin4_effect_presentwindowsEnabled=true
kwin4_effect_resizeEnabled=false
kwin4_effect_scaleinEnabled=false
kwin4_effect_screenshotEnabled=true
kwin4_effect_shadowEnabled=true
kwin4_effect_sharpenEnabled=false
kwin4_effect_sheetEnabled=false
kwin4_effect_showfpsEnabled=false
kwin4_effect_showpaintEnabled=false
kwin4_effect_slideEnabled=false
kwin4_effect_slidebackEnabled=false
kwin4_effect_slidingpopupsEnabled=true
kwin4_effect_snaphelperEnabled=false
kwin4_effect_snowEnabled=false
kwin4_effect_startupfeedbackEnabled=true
kwin4_effect_taskbarthumbnailEnabled=true
kwin4_effect_thumbnailasideEnabled=false
kwin4_effect_trackmouseEnabled=false
kwin4_effect_translucencyEnabled=true
kwin4_effect_windowgeometryEnabled=false
kwin4_effect_wobblywindowsEnabled=false
kwin4_effect_zoomEnabled=true

[PopupInfo]
PopupHideDelay=1000
ShowPopup=false
TextOnly=false

[Windows]
RollOverDesktops=true

ubuntuku wrote:For anyone using Intel i8xx/i9xx chipsets family can easily fix this issue by using git version of intel graphics driver from glasen ppa, read more here: http://ubuntuku.org/10/how-to-fix-intel ... -maverick/

Thanks a lot for this tip. Works perfectly on my Kubuntu 10.10 kde 4.6. (I had no problems when running KDE 4.5).

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00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)

Hi !

Balda wrote:

ubuntuku wrote:For anyone using Intel i8xx/i9xx chipsets family can easily fix this issue by using git version of intel graphics driver from glasen ppa, read more here: http://ubuntuku.org/10/how-to-fix-intel ... -maverick/

I try this fix and it is working. But kwin is still very slow in comparison to compiz and kwin totaly freeze when I use the windows preview effect. Then I have to kill kwin

I don't test this ppa. I would like find other solution if possible.

I test "raster mode" but I have got other issues => kde menus are transparents...

I must make a bug report for that.

Hi ! (sorry for my bad english)

if you want others informations, ok, say me wich ?

I had the same problem and used the fix involving adding the ppa ppa:glasen/intel-driver and updating which seems to be working. The most corruption I saw was when using Chrome for some reason.

Hi !

I reported a bug here

fixed here after using glasen ppa

Hi !

again me !! it's better with this solution !!

Hi ! (sorry)

finaly, I use ppa too and it works fine now

ubuntuku wrote:For anyone using Intel i8xx/i9xx chipsets family can easily fix this issue by using git version of intel graphics driver from glasen ppa, read more here: http://ubuntuku.org/10/how-to-fix-intel ... -maverick/

Thanks! This seems to work perfectly for me!