[0710] Bad performance with nVidia GeForce 8300 on 1080p

[nite_man]

Hi,

Finally I assembled my new hybrid core. I installed the the latest nVidia drviers (180.22). The core is connected to TV via HDMI cable. The resolution is 1080p/60GHz on the alpha blended UI2.

I found that even screen saver shows photos with short time freezing which happens periodically. The same issue with playback video (standard or HD). The processor is loaded on 30% maximum. Also I didn't see any  peaks there.

Any suggestion how to improve GE 8300 performance?

TIA

[Zaerc]

Hi,

Finally I assembled my new hybrid core. I installed the the latest nVidia drviers (180.22). The core is connected to TV via HDMI cable. The resolution is 1080p/60GHz on the alpha blended UI2.

I found that even screen saver shows photos with short time freezing which happens periodically. The same issue with playback video (standard or HD). The processor is loaded on 30% maximum. Also I didn't see any  peaks there.

Any suggestion how to improve GE 8300 performance?

TIA

Sure, just download the source of the drivers and... oh wait you said nvidia eh?

(Sorry I know that doesn't help, but there isn't much we can do about their shitty drivers, and you probably know more about tweaking them then I do.)

[nite_man]

I supposed that installation of nVidia drivers should be enough to get a good performance on 1080p. But it isn't true Will dig it more tonight. Probably I should run nVidia config utility in KDE and set some options.

[Itsik]

I'd lose the alpha blending. Use overlay UI and the video performance will improve noticebly


Itsik

[nite_man]

I'd lose the alpha blending. Use overlay UI and the video performance will improve noticebly


Itsik

Thanks, Itsik. Will try it as well. Especially as the alpha blending is not a top priority

[cirion]

Have you tried the suggestions in this wiki?
http://wiki.linuxmce.org/index.php/Nvidia_Card_Tweaks_For_Better_MythTV_and_UI_Performance

Works for me, but Alpha Blending still has some tearing. I us the Overlay UI.

I also have set the "Hardware Acceleration" in webadmin to "OpenGL", and the "Deinterlace Quality" to "High".

I am now using this driver:
http://www.nvidia.com/object/linux_display_ia32_180.22.html

I had to manually remove the legacy drivers as described in point 5. in the Nvidia section in this wiki:
http://wiki.linuxmce.org/index.php/Display_Drivers

[nite_man]

Thanks a lot! Disabling alpha blending solved problem. Also link to the wiki article http://wiki.linuxmce.org/index.php/Nvidia_Card_Tweaks_For_Better_MythTV_and_UI_Performance is very useful!