[Möhre]

I am running Ubuntu Natty on a Shuttle XS35GTV2 (ION2 GPU) and have the same problems. I even tried Lucid but nothing different to me - so i am using Natty again.

24Hz is fine and enabling TrippleBuffering results in a very good 60hz pulldown playback but i cannot fix the micro stuttering at 23.967Hz =(
CPU0 has about 60% load and reported fps is changing between 23,8-24,1Hz continually.

xorg.conf
-----------------------
Section "Device"
Identifier "nvidia"
Driver "nvidia"
Option "NoLogo" "true"
Option "DynamicTwinView" "false"
#Option "NoFlip" "false"
#Option "FlatPanelProperties" "Scaling = Native"
#Option "ModeValidation" "NoVesaModes, NoXServerModes"
#Option "UseDisplayDevice" "DFP-1"
#Option "ModeDebug" "true"
#Option "HWCursor" "false"
Option "TrippleBuffering" "true"
EndSection

Section "Screen"
Identifier "screen"
Device "nvidia"
SubSection "Display"
Modes "1920x1080_60_0" "1920x1080_50" "1920x1080_25" "1920x1080_24"
EndSubSection
EndSection

Section "Extensions"
Option "Composite" "false"
EndSection

[recluce]

Unless you need Unity or Gnome, why install something that causes problems? You are unlikely to use the desktop all that much on a HTPC and even less likely to care about fancy effects when you do.

Many people here seem to be ignorant about the two "light-weight" Ubuntu varieties:

XUbuntu
LUbuntu

Both are Ubuntu versions with a very light user interface that will not cause tearing. Just try it...

[Möhre]

My current config for

Shuttle XS35GTV2
• CPU: Intel Atom D525, 2x 1.80GHz
• Chipsatz: Intel NM10
• Grafikkarte: GeForce G 210 (nVIDIA NextGen ION)

Maybe it will help someone... only problematic movie left: Avatar (35MB/s) has micro stuttering sometimes

Code:

Section "Device"
        Identifier "nvidia"
        Driver  "nvidia"

        # Fixes issue with modesetting on xbmc
        #Option "ExactModeTimingsDVI"   "true" # we have proper modelines
        #Option "UseEDIDFreqs"          "true" # trust no edid
        #Option "ModeValidation"        "NoEdidModes, NoMaxPClkCheck, NoEdidMaxPClkCheck, AllowNon60HzDFPModes" # trust no edid
        Option  "FlatPanelProperties"   "Scaling = Native" # make sure the gpu does not scale and loose performance

        # Fixes tearing/smoothvideo issues
        Option  "DynamicTwinView"       "false" # disable or you'll get tearing
        Option  "TripleBuffer"          "true" # disable or xbmc will segfault with smoothvideo

        # Misc
        Option  "NoLogo"                "True" # no ads plz
        #Option  "NoFlip"              "false"
        #Option  "ModeValidation"      "NoVesaModes, NoXServerModes"
        #Option  "UseDisplayDevice"    "DFP-0"
        #Option  "ModeDebug"           "true"
        #Option  "HWCursor"            "false"      
EndSection

Section "Screen"
        Identifier      "screen"
        Device          "nvidia"
        SubSection      "Display"
                Modes "1920x1080_60_0" "1920x1080_50" "1920x1080_30" "1920x1080_25" "1920x1080_24"
        EndSubSection
EndSection

Section "Extensions"
        Option  "Composite"           "false"
EndSection

Additional info about options can be found here:
http://de.download.nvidia.com/XFree86/Li...tions.html

[Dimmuxx]

There is really no need to disable compiz in natty since the version of compiz included have the don't redirect fullscreen windows setting in compizconfig-settings-manager which removes all tearing when running xbmc in fullscreen.(You still need to do the other stuff like disable dynamictwinview etc)

[static_g]

@recluce - thanks for that. I installed lubuntu 11.10 and absolutely no tearing out of the box. You're right -- I need almost no desktop on this HTPC, and certainly nothing fancy when I do need to use it. lubuntu is perfect.

[alanwww1]

Guys, I have a solution.

Well I only tried it on my laptop with 60hz refresh rate, but it works fine there.

Just install

Code:

sudo apt-get install compizconfig-settings-manager

Run it from the start menu (just type compiz and it will appear)

In general settings go to composite extension,
- disable refresh rate detection,
- set it to your refresh rate manually. Mine was 60 on the laptop
- tick "Undirect Fullscreen Windows"

Not sure if you need all, but this works for me. Just try. Make sure you use xbmc in fullscreen mode.

Edit: This is on Intel Sandy Bridge

[d0m1nation]

running 11.04 and the latest unstable xbmc with default unity and i get no tearing, no flickering. It just works.

There's not special config here, all i did was enable the nvidia driver.

[Tolaris]

1. /etc/X11/xorg.conf

Code:

Option         "TripleBuffer" "True"

2.

Code:

sudo nvidia-xconfig --no-composite

3. When logging into Ubuntu 11.04, after selecting user name and before entering password - selecting "Classic Gnome with NO Effects".

Thanks, xbmc-junky! This resolved my tearing issue on nVidia ION with XBMC on Ubuntu 12.04! In my case, using Unity 2D in step 3.