[gentoo-user] Maybe OT: Sync freq of LCDpanel != framerate of movie ?!?

[gentoo-user] Maybe OT: Sync freq of LCDpanel != framerate of movie ?!?

[meino.cramer]

Hi,

 may be this is offtopic, may be it is not. Depends
 on whether gentoo-related software can do something 
 for me in this case...

 I bought a LCD monitor as a replacement for my aging
 CRT one.

 It is a HP LP2475w which has a vertical refresh rate 
 (sorry is this is a corrupted terminus technicus...
 my "C" is better than my English... ;) ) of 60Hz and
 runs with 1920x1200 resolution.

 Since all my hardware is wired to 220V/50Hz and
 DVDs/videos of region 2 have a framerate of 50Hz
 I can see distortions in fast moving scenes especially
 at fast changing light conditions (flashes, disco 
 lightning, fight scenes in Matrix Revolutions etc...)

 The LCD is driven via DVI conection by a
 nVidia Corporation G73 [GeForce 7600 GT] (rev a2)
 and I am using the current nvidida-drivers.

 I played around with different SYNC-options in 
 the nvidia-settings dialog but did not found one
 which cures the problem.

 How can I fix the problem ?

 Thank you very much for any help in advance!
 Have a nice weekend!
 Best regards
 mcc


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Re: [gentoo-user] Maybe OT: Sync freq of LCDpanel != framerate of movie ?!?

[William Kenworthy]

Not sure if it will help, but try setting your kernel jiffies to 300hz?
- 300 is evenly divisible by both 60 and 50 and I think was introduced
for this reason.

BillK


On Sat, 2010-04-24 at 14:26 +0200, meino.cramer@gmx.de wrote:
> Hi,
> 
>  may be this is offtopic, may be it is not. Depends
>  on whether gentoo-related software can do something 
>  for me in this case...
> 
>  I bought a LCD monitor as a replacement for my aging
>  CRT one.
> 
>  It is a HP LP2475w which has a vertical refresh rate 
>  (sorry is this is a corrupted terminus technicus...
>  my "C" is better than my English... ;) ) of 60Hz and
>  runs with 1920x1200 resolution.
> 
>  Since all my hardware is wired to 220V/50Hz and
>  DVDs/videos of region 2 have a framerate of 50Hz
>  I can see distortions in fast moving scenes especially
>  at fast changing light conditions (flashes, disco 
>  lightning, fight scenes in Matrix Revolutions etc...)
> 
>  The LCD is driven via DVI conection by a
>  nVidia Corporation G73 [GeForce 7600 GT] (rev a2)
>  and I am using the current nvidida-drivers.
> 
>  I played around with different SYNC-options in 
>  the nvidia-settings dialog but did not found one
>  which cures the problem.
> 
>  How can I fix the problem ?
> 
>  Thank you very much for any help in advance!
>  Have a nice weekend!
>  Best regards
>  mcc
> 
> 
-- 
William Kenworthy <billk@iinet.net.au>
Home in Perth!

Re: [gentoo-user] Maybe OT: Sync freq of LCDpanel != framerate of movie ?!?

[Mick]

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On Saturday 24 April 2010 14:33:39 William Kenworthy wrote:
> Not sure if it will help, but try setting your kernel jiffies to 300hz?
> - 300 is evenly divisible by both 60 and 50 and I think was introduced
> for this reason.

Assuming your "jiffies" imply the kernel's setting of CONFIG_HZ_300=y, we're 
still talking about the kernel here, not the video card ...

Anyway, isn't CONFIG_HZ_1000=y a better option for a modern desktop?  1000 is 
also divisible by both 50 & 60.

-- 
Regards,
Mick

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Re: [gentoo-user] Maybe OT: Sync freq of LCDpanel != framerate of movie ?!?

[meino.cramer]

Mick <michaelkintzios@gmail.com> [10-04-24 16:56]:
> On Saturday 24 April 2010 14:33:39 William Kenworthy wrote:
> > Not sure if it will help, but try setting your kernel jiffies to 300hz?
> > - 300 is evenly divisible by both 60 and 50 and I think was introduced
> > for this reason.
> 
> Assuming your "jiffies" imply the kernel's setting of CONFIG_HZ_300=y, we're 
> still talking about the kernel here, not the video card ...
> 
> Anyway, isn't CONFIG_HZ_1000=y a better option for a modern desktop?  1000 is 
> also divisible by both 50 & 60.
> 
> -- 
> Regards,
> Mick

...how carefully do you devide 1000 by 60 to not to break it apart ?
;)





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Re: [gentoo-user] Maybe OT: Sync freq of LCDpanel != framerate of movie ?!?

[Mick]

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On Saturday 24 April 2010 15:58:23 meino.cramer@gmx.de wrote:
> Mick <michaelkintzios@gmail.com> [10-04-24 16:56]:
> > On Saturday 24 April 2010 14:33:39 William Kenworthy wrote:
> > > Not sure if it will help, but try setting your kernel jiffies to 300hz?
> > > - 300 is evenly divisible by both 60 and 50 and I think was introduced
> > > for this reason.
> >
> > Assuming your "jiffies" imply the kernel's setting of CONFIG_HZ_300=y,
> > we're still talking about the kernel here, not the video card ...
> >
> > Anyway, isn't CONFIG_HZ_1000=y a better option for a modern desktop? 
> > 1000 is also divisible by both 50 & 60.
> 
> ...how carefully do you devide 1000 by 60 to not to break it apart ?
> ;)

Oops!  It is evident that I cannot use a calculator!  O_O

-- 
Regards,
Mick

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Re: [gentoo-user] Maybe OT: Sync freq of LCDpanel != framerate of movie ?!?

[meino.cramer]

Mick <michaelkintzios@gmail.com> [10-04-24 17:20]:
> On Saturday 24 April 2010 15:58:23 meino.cramer@gmx.de wrote:
> > Mick <michaelkintzios@gmail.com> [10-04-24 16:56]:
> > > On Saturday 24 April 2010 14:33:39 William Kenworthy wrote:
> > > > Not sure if it will help, but try setting your kernel jiffies to 300hz?
> > > > - 300 is evenly divisible by both 60 and 50 and I think was introduced
> > > > for this reason.
> > >
> > > Assuming your "jiffies" imply the kernel's setting of CONFIG_HZ_300=y,
> > > we're still talking about the kernel here, not the video card ...
> > >
> > > Anyway, isn't CONFIG_HZ_1000=y a better option for a modern desktop? 
> > > 1000 is also divisible by both 50 & 60.
> > 
> > ...how carefully do you devide 1000 by 60 to not to break it apart ?
> > ;)
> 
> Oops!  It is evident that I cannot use a calculator!  O_O
> 
> -- 
> Regards,
> Mick

It is -- of course -- definetly a bug in the firmware of the
calculator! Sure! :)

I have looked into my .config and it says to run my box with 1000Hz.

I will try to set it at 300Hz, which will bring mplayer to protest
against...

But if my LCD will better live with 300Hz ...

Ok, other ideas what produces the distortions?




-- 
Please don't send me any Word- or Powerpoint-Attachments
unless it's absolutely neccessary. - Send simply Text.
See http://www.gnu.org/philosophy/no-word-attachments.html
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Re: [gentoo-user] Maybe OT: Sync freq of LCDpanel != framerate of movie ?!?

[Volker Armin Hemmann]

On Samstag 24 April 2010, meino.cramer@gmx.de wrote:
> Mick <michaelkintzios@gmail.com> [10-04-24 17:20]:
> > On Saturday 24 April 2010 15:58:23 meino.cramer@gmx.de wrote:
> > > Mick <michaelkintzios@gmail.com> [10-04-24 16:56]:
> > > > On Saturday 24 April 2010 14:33:39 William Kenworthy wrote:
> > > > > Not sure if it will help, but try setting your kernel jiffies to
> > > > > 300hz? - 300 is evenly divisible by both 60 and 50 and I think was
> > > > > introduced for this reason.
> > > > 
> > > > Assuming your "jiffies" imply the kernel's setting of
> > > > CONFIG_HZ_300=y, we're still talking about the kernel here, not the
> > > > video card ...
> > > > 
> > > > Anyway, isn't CONFIG_HZ_1000=y a better option for a modern desktop?
> > > > 1000 is also divisible by both 50 & 60.
> > > 
> > > ...how carefully do you devide 1000 by 60 to not to break it apart ?
> > > ;)
> > 
> > Oops!  It is evident that I cannot use a calculator!  O_O
> 
> It is -- of course -- definetly a bug in the firmware of the
> calculator! Sure! :)
> 
> I have looked into my .config and it says to run my box with 1000Hz.
> 
> I will try to set it at 300Hz, which will bring mplayer to protest
> against...
> 
> But if my LCD will better live with 300Hz ...
> 
> Ok, other ideas what produces the distortions?


kernel jiffies have nothing to do with that. Absolutely nothing. Apart from that 
it is a wise choice - 100 is too low for a desktop and 1000 is too much.

First off all, turn off 'vsync'. Also try opengl as output instead of xv. And if 
your display can do 75hz it might be a good thing to try.

Oh - and the freqs of the current has nil influence at all.

Re: [gentoo-user] Maybe OT: Sync freq of LCDpanel != framerate of movie ?!?

[meino.cramer]

Volker Armin Hemmann <volkerarmin@googlemail.com> [10-04-24 17:56]:
> On Samstag 24 April 2010, meino.cramer@gmx.de wrote:
> > Mick <michaelkintzios@gmail.com> [10-04-24 17:20]:
> > > On Saturday 24 April 2010 15:58:23 meino.cramer@gmx.de wrote:
> > > > Mick <michaelkintzios@gmail.com> [10-04-24 16:56]:
> > > > > On Saturday 24 April 2010 14:33:39 William Kenworthy wrote:
> > > > > > Not sure if it will help, but try setting your kernel jiffies to
> > > > > > 300hz? - 300 is evenly divisible by both 60 and 50 and I think was
> > > > > > introduced for this reason.
> > > > > 
> > > > > Assuming your "jiffies" imply the kernel's setting of
> > > > > CONFIG_HZ_300=y, we're still talking about the kernel here, not the
> > > > > video card ...
> > > > > 
> > > > > Anyway, isn't CONFIG_HZ_1000=y a better option for a modern desktop?
> > > > > 1000 is also divisible by both 50 & 60.
> > > > 
> > > > ...how carefully do you devide 1000 by 60 to not to break it apart ?
> > > > ;)
> > > 
> > > Oops!  It is evident that I cannot use a calculator!  O_O
> > 
> > It is -- of course -- definetly a bug in the firmware of the
> > calculator! Sure! :)
> > 
> > I have looked into my .config and it says to run my box with 1000Hz.
> > 
> > I will try to set it at 300Hz, which will bring mplayer to protest
> > against...
> > 
> > But if my LCD will better live with 300Hz ...
> > 
> > Ok, other ideas what produces the distortions?
> 
> 
> kernel jiffies have nothing to do with that. Absolutely nothing. Apart from that 
> it is a wise choice - 100 is too low for a desktop and 1000 is too much.
> 
> First off all, turn off 'vsync'. Also try opengl as output instead of xv. And if 
> your display can do 75hz it might be a good thing to try.
> 
> Oh - and the freqs of the current has nil influence at all.
> 

Sorry for not understanding -- English is not my mothers tongue --:
The last sentence: "of the current" what?



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Please don't send me any Word- or Powerpoint-Attachments
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Re: [gentoo-user] Maybe OT: Sync freq of LCDpanel != framerate of movie ?!?

[Daniel Pielmeier]

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meino.cramer@gmx.de schrieb am 24.04.2010 18:28:
> Volker Armin Hemmann <volkerarmin@googlemail.com> [10-04-24 17:56]:
>> Oh - and the freqs of the current has nil influence at all.
>>
> 
> Sorry for not understanding -- English is not my mothers tongue --:
> The last sentence: "of the current" what?
> 

I guess he is talking about electric current.

-- 
Daniel Pielmeier


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Re: [gentoo-user] Maybe OT: Sync freq of LCDpanel != framerate of movie ?!?

[meino.cramer]

Daniel Pielmeier <billie@gentoo.org> [10-04-24 18:44]:
> meino.cramer@gmx.de schrieb am 24.04.2010 18:28:
> > Volker Armin Hemmann <volkerarmin@googlemail.com> [10-04-24 17:56]:
> >> Oh - and the freqs of the current has nil influence at all.
> >>
> > 
> > Sorry for not understanding -- English is not my mothers tongue --:
> > The last sentence: "of the current" what?
> > 
> 
> I guess he is talking about electric current.
> 
> -- 
> Daniel Pielmeier
> 


Oh! Yes! the other meaning of "current" .... I thought of
"uptodate"...



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Please don't send me any Word- or Powerpoint-Attachments
unless it's absolutely neccessary. - Send simply Text.
See http://www.gnu.org/philosophy/no-word-attachments.html
In a world without fences and walls nobody needs gates and windows.

Re: [gentoo-user] Maybe OT: Sync freq of LCDpanel != framerate of movie ?!?

[Jonathan]

On Sat, 24 Apr 2010 18:52:08 +0200
meino.cramer@gmx.de wrote:

I uses 
Option		"TwinView"	"0"
under screen section and 
Option		"DynamicTwinView"	"FALSE"
under device or xrandr gives the wrong refresh rate.

I do not know if this will help you.

> Oh! Yes! the other meaning of "current" .... I thought of
> "uptodate"...
Sorry it's off topic.
The watch man watches his watch on the watch.