[Savage40] IBM t23 supersavage, xvideo overlay, some news

Mon Nov 7 10:17:16 PST 2005

--- Harald Strack <strack at fhm.edu> wrote:

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> Hi,
> 
> this was in may
> 
> On 5/27/05, Harald Strack <hstrack at trymedia.com
> <http://www.probo.com/mailman/listinfo/savage40>> wrote:
> > / Hi,
> />/
> />/
> />/ I am running Linux Kernel 2.6.10, xorg cvs, drm cvs and mesa cvs
> on my
> />/ t23 with supersavage IX/C SDR card.
> />/ Xvideo works perfectly when I am running 1024x768. But all
> smaller
> />/ resolutions
> />/ (640x480, 800x600) are producing a video overlay which is only
> filled
> />/ with videodata in the upper right part. The rest is blue. What
> you see
> />/ is the actual movie, but it seems like the linebreaks (if this
> exists in
> />/ xvideo) are wrong.
> />/ Since the display  and the position of the video is wrong, the
> error may
> />/ be, that the Xvideo driver
> />/ does not recognize the smaller resolutions but uses for its
> calculation
> />/ further on 1024x768.
> />/
> /
> it sounds like an offset problem, or maybe a LCD scaler issue.  As I
> recall I had Xv working pretty well at all resolutions on my savage
> IX, but it's been a while since I tested.  I don't have a
> supersavage,
> so it may be supersavage related (although I think the overlays are
> pretty similar if not identical).  Do you have problems with all YUV
> formats or just some?
> I must re-iterate that the savage streams engine is a work of pure
> evil.  I REALLY dislike working on it.  If anyone else wants to try
> their hand at this, let me know and I can answer any questions you
> may
> have.
> 
> Alex
> 
> > / The XFree86 4.3.0 drivers had these problem for me also, but only
> > on
> />/ tv-out. The actual driver has it
> />/ now on LCD and tv.
> />/
> />/ I did not found a cheap workaround like starting X in 640x480
> mode or
> />/ similar.
> />/
> />/ Had anyone similar problems? Since the t23 seems to be very
> popular
> />/ laptop, but I could not
> />/ find any problem reports concerning my issues...
> />/
> />/ Best Regards
> />/
> />/ Harry
> />/
> />/
> />/
> />
> 
> I upgraded the t23 to a 1400x1050 LCD display and now again only in
> the highest mode (1400x1050) I can
> use xv. Sounds for me like a simple LCD scaling issue. How can I fix
> this?
> 

you might be able to get it working if you disable the LCD scaler.  I
suppose the true fix would be to try and figure out what sort of
compensation needs to happen to make Xv work with the LCD scaler on. 
There is some code in the driver to handle that, but apparently it
doesn't work right for your card.  Take a look at savage_streams.c and
savage_video.c

Alex

> 
> Harry
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