[mythtv-users] Move from Nvidia 220 to what card?

[John Adams]

On Sat, 08 Nov 2014 13:57:19 -0800
Jay Foster <jayf0ster at roadrunner.com> wrote:

> On 11/08/2014 10:40 AM, Greg Grotsky wrote:
> > On Tue, Oct 30, 2012 at 9:57 AM, Andre <mythtv-list at dinkum.org.uk 
> > <mailto:mythtv-list at dinkum.org.uk>> wrote:
> >
> >     Yes, I have both a GT220 and an overclocked GT430 and although
> >     generally the 430 gives slightly improved image quality it does
> >     add a little stutter here and there, I understand that the non
> >     overclocked ones are a lot worse. The GT220 is smooth for
> > 1080i50 & 1080i60 with Advanced 2x all of the time.
> >
> >     I found that both cards had some stutter if the audio buffers
> > were not increased.
> >     >From my rc.local
> >     echo 3072 > /proc/asound/card0/pcm7p/sub0/prealloc
> >
> >     This came from some postings by JYA and looking through the
> >     frontend logs, other cards may have a slightly different path
> > but it appears in the logs if this is a problem.
> >
> >
> >
> > Would you guys share what "timing method" is being chosen 
> > by mythfrontend to playback videos? I have a GT 430 and I've only
> > ever been able to get it to use the USleep or RTC methods. I am
> > wondering if the GT 220 or one of these fancy new cards like the GT
> > 730
> > <http://www.newegg.com/Product/Product.aspx?Item=N82E16814500353>,
> > GT 720
> > <http://www.newegg.com/Product/Product.aspx?Item=N82E16814500352>,
> > or GT 630
> > <http://www.newegg.com/Product/Product.aspx?Item=N82E16814500346>
> > would work in DRM mode.
> >
> > Here are examples of my logs showing the two methods:
> >
> > 2014-10-26 19:08:35.135915 E  VSYNC: DRMVideoSync: VBlank ioctl did 
> > not work, unimplemented in this driver?
> > 2014-10-26 19:08:35.135954 E  VSYNC: RTCVideoSync: Could not set
> > RTC frequency:
> >                         eno: Permission denied (13)
> > 2014-10-26 19:08:35.136377 I  Player(0): Video timing method:
> > USleep with busy wait
> > 2014-10-26 19:08:35.136392 I  Player(0): Display Refresh Rate:
> > 59.999 Video Frame Rate: 25.000
> > 2014-10-26 19:08:35.136401 I  Player(0): SetFrameInterval ps:1
> > scan:1
> >
> > or
> >
> > 2014-10-28 07:05:16.991023 I  VDPAU: Created 2 output surfaces.
> > 2014-10-28 07:05:16.991062 I  VDPAU: Created VDPAU render device
> > 1920x1080 2014-10-28 07:05:17.007008 N  Player(0): Forcing decode
> > extra audio option on (Video method requires it).
> > 2014-10-28 07:05:17.096562 I  Player(0): Video timing method: RTC
> >
> > Anyway, I'm thinking about upgrading my 430 to one of these newer 
> > cards to see if it'll play some of my video library better but I
> > can't really try it before I buy it.
> >
> >
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users at mythtv.org
> > http://www.mythtv.org/mailman/listinfo/mythtv-users
> > http://wiki.mythtv.org/Mailing_List_etiquette
> > MythTV Forums: https://forum.mythtv.org
> My only suggestion is to skip the 7xx cards for now.  I tried a GT
> 730 card and the nvidia 304 driver does not support it.  The 331
> driver "does", but there is a bug in the vdpau library that causes
> crashes with the 7xx cards.  If you download the latest drivers from
> nvidia, then things might be better, but the prepackaged Ubuntu
> drivers do not (yet) support the GT 730 card.
> 
> I am now using a GT 630 card (Asus GEFORCE GT 630, 384 cuda cores,
> 2GB DDR3 RAM).  It is a low profile fanless card.  I have never
> gotten anything but the default usleep method to work.  I have never
> gotten tear free playback either, even with vdpau.  This probably has
> nothing to do with the card itself.  Do note that there is  more than
> one GT 630 card.  Some have more cuda cores and different clock
> rates, so not all GT 630 cards are created equal.  Just love
> marketing. Jay

I have two frontends using Nvidia 750 cards, one 750 and one 750ti,
with the 334.21 nvidia driver.  Both are rock solid.  These are
64 bit machines.  I'm not using any form of ubuntu.

-- 
John Adams (mythtv at onevista.com)