[directfb-users] Re: XDirectFB on secend head flickers

[TheNop <TheNop@gmx.net>]

TheNop wrote:

> Ville Syrjälä wrote:
>
> > On Tue, Aug 10, 2004 at 12:36:01AM +0200, TheNop wrote:
> >  
> > > Ville Syrjälä wrote:
> > >
> > >   
> > > > On Tue, Aug 10, 2004 at 12:23:28AM +0200, TheNop wrote:
> > > >
> > > >
> > > >     
> > > > > Ville Syrjälä wrote:
> > > > >
> > > > >  
> > > > >       
> > > > > > On Mon, Aug 09, 2004 at 10:58:23PM +0200, TheNop wrote:
> > > > > >
> > > > > >
> > > > > >   
> > > > > >         
> > > > > > > I have tested the option FLICKER_FILTERING  but nothing happend.
> > > > > > > I have the same line flicker effect as before. Switching on and 
> > > > > > > off has no effect.
> > > > > > >
> > > > > > > I  tested xfree with fbdev driver on the TV an I saw the same 
> > > > > > > line flicker effect as using XDirectFB.
> > > > > > >
> > > > > > >
> > > > > > >     
> > > > > > >           
> > > > > > Both matroxfb and the XFree86 driver use the CRTC2 RGB mode + 
> > > > > > maven scaler so the filter should work with both.
> > > > > >
> > > > > > matroxset can be used to change the filter settings for matroxfb. 
> > > > > > 'matroxset -l' should list the available controls and 'matroxset 
> > > > > > -c <something>' should change them.
> > > > > >
> > > > > >
> > > > > >
> > > > > >   
> > > > > >         
> > > > > > > Only when I'm using the mga driver for xfree I have real stable 
> > > > > > > output on my TV without any line flicher effect.
> > > > > > >
> > > > > > >
> > > > > > >     
> > > > > > >           
> > > > > > So the driver always enables the filter.
> > > > > >
> > > > > >
> > > > > >
> > > > > >   
> > > > > >         
> > > > > I get no list with 'matroxset -l"
> > > > >
> > > > > mmstation root # matroxset -l
> > > > > *--------+-----+-----+-----+-----+--------------------------------*
> > > > > |Id      |Curr |Def. |Min  |Max  |Name                            |
> > > > > *--------+-----+-----+-----+-----+--------------------------------*
> > > > >
> > > > > What do I wrong ?
> > > > >  
> > > > >       
> > > > I'm not sure. I've never tried that stuff myself. Maybe you kernel 
> > > > is too old (2.4.22 appears to have the required ioctls). Did you 
> > > > have TV out enabled when you tried the matroxset command?
> > > >
> > > >
> > > >
> > > >     
> > > I tried both tv on and off, but no list:-)
> > > I have kernel 2.4.26 running and I have matroxfb_ctrl2 build in the 
> > > kernel (no module). i2c-matroxfb and matroxfb_mave are modules
> > >   
> >
> > Ok I see the problem now. Try 'matroxset -f /dev/fb0 -l'.
> >
> >  
> I tried 'matroxset -f /dev/fb0 -l' it works under kernel 2.6.7 but it 
> dosen't work when I have kernel 2.4.26 running.
> There is one more different, I use the matroxfb_crtc2 as module with 
> kernel 2.6.7.
> I will try if matroxset -l is working, when use matroxfb_crtc2 as 
> module with kernel 2.4.26.
>
> If  I set deflicker option (kernel 2.6.7) to maaximum of 2, then the 
> line flicker effect is gone :-) That's great. Hopefully I get I get it 
> working with kernel 2.4.26.
>
> Thanx a lot
> CU
>
> The Nop
I took a look at the matroxfb_maven.c source file and found out, writing 
a 0xa2 at register 0x93 solve my problem.
Now I will patch the matroxfb_maven.c to change the default values of 
saturation, brigthness and deflicker to my needs.

Beste regards
TheNop