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List: freedesktop-xorg
Subject: Re: Disabling EXA
From: Alex Deucher <alexdeucher () gmail ! com>
Date: 2011-11-28 14:34:41
Message-ID: CADnq5_O5m7xavBP4aW5onZ7qpbNMKNgfsAmJAJvfNSqrFA2Wtw () mail ! gmail ! com
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On Sat, Nov 26, 2011 at 10:33 AM, Christoph Bartoschek
<bartoschek@or.uni-bonn.de> wrote:
> Hi,
>
> how can I disable EXA and use XAA? I am on opensuse and added the following
> section to /etc/X11/xorg.conf.d/50-device.conf:
>
> Section "Device"
> Option "AccelMethod" "xaa"
> Identifier "Default Device"
> EndSection
>
> Xorg reads the file because it says in its logfile:
>
> [ 21.481] (==) RADEON(0): Depth 24, (--) framebuffer bpp 32
> [ 21.481] (II) RADEON(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp
> pixmaps)
> [ 21.481] (==) RADEON(0): Default visual is TrueColor
> [ 21.481] (**) RADEON(0): Option "AccelMethod" "xaa"
> [ 21.481] (==) RADEON(0): RGB weight 888
> [ 21.481] (II) RADEON(0): Using 8 bits per RGB (8 bit DAC)
> [ 21.481] (--) RADEON(0): Chipset: "ATI Radeon Mobility X300 (M22) 5460
> (PCIE)" (ChipID = 0x5460)
> [ 21.481] (II) RADEON(0): PCIE card detected
>
> But EXA is still used:
>
> [ 21.481] (II) Loading sub module "exa"
> [ 21.481] (II) LoadModule: "exa"
> [ 21.482] (II) Loading /usr/lib/xorg/modules/libexa.so
> [ 21.488] (II) Module exa: vendor="X.Org Foundation"
> [ 21.488] compiled for 1.10.4, module version = 2.5.0
> ...
> [ 21.575] (II) RADEON(0): EXA: Driver will allow EXA pixmaps in VRAM
> ...
> [ 21.635] (II) RADEON(0): Setting EXA maxPitchBytes
> [ 21.635] (II) EXA(0): Driver allocated offscreen pixmaps
> [ 21.635] (II) EXA(0): Driver registered support for the following
> operations:
> [ 21.635] (II) Solid
> [ 21.635] (II) Copy
> [ 21.635] (II) Composite (RENDER acceleration)
> [ 21.635] (II) UploadToScreen
> [ 21.635] (II) DownloadFromScreen
>
>
> How can I disable EXA and use XAA?. I suspect EXA to be responsible for a
> huge performance regression.
XAA is not compatible with KMS.
Alex
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