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General => Installation issues => Topic started by: nite_man on January 20, 2009, 09:41:59 am

Title: [0710] Bad performance with nVidia GeForce 8300 on 1080p
Post by: nite_man on January 20, 2009, 09:41:59 am
Hi,

Finally I assembled my new hybrid core (http://wiki.linuxmce.org/index.php/User:Nite_man#New_setup). 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
Title: Re: [0710] Bad performance with nVidia GeForce 8300 on 1080p
Post by: Zaerc on January 20, 2009, 03:44:24 pm
Hi,

Finally I assembled my new hybrid core (http://wiki.linuxmce.org/index.php/User:Nite_man#New_setup). 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.)
Title: Re: [0710] Bad performance with nVidia GeForce 8300 on 1080p
Post by: nite_man on January 20, 2009, 03:49:19 pm
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.
Title: Re: [0710] Bad performance with nVidia GeForce 8300 on 1080p
Post by: Itsik on January 20, 2009, 04:16:15 pm
I'd lose the alpha blending. Use overlay UI and the video performance will improve noticebly


Itsik
Title: Re: [0710] Bad performance with nVidia GeForce 8300 on 1080p
Post by: nite_man on January 20, 2009, 04:40:33 pm
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 :)
Title: Re: [0710] Bad performance with nVidia GeForce 8300 on 1080p
Post by: cirion on January 20, 2009, 05:26:35 pm
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
Title: Re: [0710] Bad performance with nVidia GeForce 8300 on 1080p
Post by: nite_man on January 20, 2009, 09:38:15 pm
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!