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Date:      Tue, 8 Mar 2011 19:32:04 +0100
From:      Roland Smith <rsmith@xs4all.nl>
To:        "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: xorg-driver/xf86-video-ati-6.14.0: Worse performance since last update
Message-ID:  <20110308183204.GB25750@slackbox.erewhon.net>
In-Reply-To: <4D767265.80406@mail.zedat.fu-berlin.de>
References:  <4D767265.80406@mail.zedat.fu-berlin.de>

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On Tue, Mar 08, 2011 at 07:16:05PM +0100, O. Hartmann wrote:
> Since the last update of Xorg stuff, including the=20
> xf86-video-ati-6.14.0, the video performance of all of our=20
> AMD/ATi-driven boxes went worse.
> The bad performance also occur with the recommendations made in=20
> ports/UPDATING for driver "radeon". Without those recommendated adding=20
> of options even with a working xorg.conf file the performance stays worse.

The recommendations have been removed from UPDATING; with the exception of =
the
"DynamicPM" option, all the others are at their default settings and theref=
ore
not necessary.

> Worse means: using vlc (also after recompilation after upgrades made!),=
=20
> videos are massively bumpy and can not be watched with vlc-screen fully=
=20
> expanded to 1900x1200 pixel with HD4830 graphics card - this worked=20
> perfectly before.

Check out the logfile '/var/log/Xorg.0.log' if you see anything unusual.

> Moving windows around now looks like having chunks of video content=20
> floating around - as on unaccelerated/slow graphics boards.

When looking at the logfile '/var/log/Xorg.0.log', does it say the followin=
g;

(II) RADEON(0): Acceleration enabled
(II) RADEON(0): Set up textured video

Personally, I have built this port with one of the patches removed. In my c=
ase
the patch in question hung my machine every time! (there was quite a large
thread about it on the mailing-list) Try removing the patch
/usr/ports/x11-drivers/xf86-video-ati/files/patch-src-radeon_driver.c and
re-install the driver. If that works you can make the change permanent like
this:

    # cd /usr/ports/x11-drivers/xf86-video-ati/files
    # truncate -s 0 patch-src-radeon_driver.c
    # chflags schg,sunlnk patch-src-radeon_driver.c


Roland
--=20
R.F.Smith                                   http://www.xs4all.nl/~rsmith/
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