[Intel-gfx] [PATCH 00/18] xv overlay cleanup & drmmode overlay support

[Daniel Vetter]

Hi Haihao,

On Tue, Sep 01, 2009 at 11:15:51AM +0800, Xiang, Haihao wrote:
> I tested them on 945GM with the following components:
> X Server 1.6.99.1
> xf86-video-intel (master): 7c48c21b22bf5862c5a35bda1635753cc5a7197c
> kernel: 2.6.31-rc7
> mplayer

Thanks for testing.

> a) only start up X from a console 
>    1. many unexpected lines/spots for every frame when playing a mpeg2
> file.
>    2. blue window when playing an 80 mbps file .
> b) gnome
>    always get a blue window.

Uups, that's bad. I known that 855GM and 865G suffer from some
bandwidth/watermarking problem. But not that bad. I've hoped that other,
newer chipsets would work. Unfortunately I am at loss problem. I've
already tried changing a few obvious differences of the kms driver vs. the
ums driver in (fifo watermarks and similar stuff) but nothing helped. And
given that there's no freely available documentation for anything older
that 965 (and even there, bandwidth allocation issues seem to be not
completely documented) I don't think I have a chance to fix this.

Can you perhaps take a look?

> Thank
> Haihao

Thanks, Daniel

btw: At least on my hw, when a stop the video and don't update the
overlay, the image stabilizes within a few secs (load is at most some
mouse wiggling). So I don't thing the overlay regs are set up wrong, it's
just that there are tons of underruns in the output engine under load.
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: 079 365 57 48