[mythtv-users] Jerky panning all cards and resolutions. Thoughts on where to look?

[Anthony Hornby]

If you are using an NVIDIA card try this in /etc/X11/xorg.conf

Section "Extensions"
        Option      "Composite" "Disable"
EndSection

I did this and noticed an immediate improvement.
NViIDIA 7600 AGP card, Athlon 3200+, 1GB DDR500 RAM, fedora core 6 and atrpms myth packages, NVIDIA 9755 driver, kernel deinterlacing and ffmpeg (standard) mpeg decoding.
I have all the OpenGL sync options enabled and run 1080i resolution over DVI at 50Hz

Hope this helps.

Regards Anthony.

----- Original Message -----
From: "William Munson" <william_munson at bellsouth.net>
To: "Discussion about mythtv" <mythtv-users at mythtv.org>
Sent: Friday, May 18, 2007 9:03:55 AM (GMT+0930) Australia/Darwin
Subject: Re: [mythtv-users] Jerky panning all cards and resolutions.	Thoughts on where to look?

Endaf Jones wrote:
> On Mon, 2007-05-14 at 16:32 -0400, William Munson wrote:
>   
>> Hi Listland,
>>
>> Since day one I have noticed that panning scenes have a distinct
>> "gallop". This is independent of video mode, resolution, signal source,
>> real time setting or rendering method. On about a 1/2 to 1 second cycle
>> the pan will speed up and slow down in a repeating pattern. Nothing I
>> have tried has fixed the problem.
>>     
>
> You may want to try changing the Kernel's "HZ" setting to 300 Hz.
> This provides good even timing for both 50 and 60 Hz display systems.
>
> This was brought up in the mail list in the past few months.
>   

Not sure I know enough about kernel settings to feel comfortable that I 
am not going to screw things up worse. Is there a good guide or has 
someone got a precompiled kernel for Ubuntu Edgy with the needed 
"fixes"? I know enough to recompile nvidia and the other manually 
installed packages, just not the kernel. I would really hate to end up 
with a non-bootable system. :(

TIA,
Bill


_______________________________________________
mythtv-users mailing list
mythtv-users at mythtv.org
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users


-- 
Mr Anthony Hornby
Associate Director, Resources and Technology
Library and Information Access
Charles Darwin University (CRICOS 300K)
Phone: +61 8 8946 6011
Email: anthony.hornby at cdu.edu.au.no-spam(remove the .no-spam)