Xv, radeon-exa-16.diff and some observations

Björn Nilsson bni.swe at gmail.com
Thu Sep 15 09:22:16 PDT 2005

On 9/13/05, Eric Anholt <eta at lclark.edu> wrote:
> On Tue, 2005-09-13 at 15:48 +0200, Diego Calleja wrote:
> > > Since so many people own this card (9200SE) and have no problems
> > > with it with xfree86 and windows, I suspect the problem may be in the
> > > mainboard (supermicro 370DE6, serverworks chipset dual p3), since it's
> > > not "Multimedia-oriented" (I've had some small issues with agp BIOS
> > > options and usb even with windows, linux's kernel AGP driver and mtrr
> > > also did weird things in some releases and so on :/ )
> > 
> > Ok, so I was right - this was a kernel-chipset interaction issue. I
> removed
> > the apg modules and the hangs dissapear, apparently it's the kernel
> > who causes it (gotta love broken AGP chipsets :/)
> > 
> > But now I have another problem: fonts dissapeared from kde when enabling
> > EXA! However, I found some advices in the 
> > 	Subject: Re: radeon 9200M troubles
> > thread from Michel Dänzer and I was able to run kde when setting
> > turning option "RenderAccel" "off"
> As was mentioned in the checkin, render acceleration in the MMIO case is
> likely broken.  That's what changed when you turned off DRI (as a side
> effect of disabling AGP -- I'm assuming the fallback to pcigart didn't
> work since I've seen it fail so many times myself).
> -- 
> Eric Anholt                                     eta at lclark.edu
> http://people.freebsd.org/~anholt/              anholt at FreeBSD.org

Today i rebuilt Xorg modular from cvs and enabled mesa and dri.
Testing on my 9200SE, and almost everything is _very_ smooth. Xv works
now, it did not before when I was not loading glx and dri.

Encountered problems:
1. Resizing windows leaves some "garbage" in the area which was
previously covered.

2. Xv. Movie doesnt show when window isnt focused. forward/rewind in
xine mess up the picture.

3. launching glxgears seems to crash the server after a few seconds.

4. Scrolling in windows that contains text isnt very fast. ie kwrite,
konsole. Scrolling in konquereor is better, but i would not say
smooth. I only have anitaliased vera font, no core fonts anywhere.

5. Although moving windows is very smooth, I can see some tearing on
my tft monitor. By tearing I mean sort of the same affect as seen in
3D games when setting vsync off.

Thanks for your great work in "fixing" X :-)

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