Activating EXA
Section "Device"
Identifier "mga"
Driver "mga"
Option "AccelMethod" "EXA"
Option "EXANoComposite" "True"
Option "EXANoDownloadFromScreen" "True"
Option "EXANoUploadToScreen" "True"
Endsection
makes it worse than normal software render.
It results in hanging X without disabling Compsite/DownloadFromScreen.
Disabling Composite, DownloadFromScreen results in fully corrupted
screen, disabling UploadToScreen helps a little, however screen is still
corrupted (moving a window over another leaves traces in the inactive
windows behind).
The remaining acceleration
[ 268.727] (**) MGA(0): EXA: Disabling Composite operation (RENDER
acceleration)
[ 268.727] (**) MGA(0): EXA: Disabling UploadToScreen
[ 268.727] (**) MGA(0): EXA: Disabling DownloadFromScreen
[ 268.727] (II) EXA(0): Offscreen pixmap area of 8474624 bytes
[ 268.727] (II) EXA(0): Driver registered support for the following
operations:
[ 268.727] (II) Solid
[ 268.727] (II) Copy
[ 268.727] (==) MGA(0): Backing store enabled
is just as slow as normal render => EXA + matrox card is not usable
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Packages, which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1316035
Title:
matrox g200eR2 is unclaimed in 14.04
Status in “xorg-server” package in Ubuntu:
New
Bug description:
On a certified Dell PowerEdge T620 server
(http://www.ubuntu.com/certification/hardware/201207-11426/)
The matrox video card is not recognised:
lspci | grep VGA
0a:00.0 VGA compatible controller: Matrox Electronics Systems Ltd. G200eR2
lshw -C display
*-display UNCLAIMED
description: VGA compatible controller
product: G200eR2
vendor: Matrox Electronics Systems Ltd.
physical id: 0
bus info: pci@0000:0a:00.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: pm vga_controller bus_master cap_list
configuration: latency=64 maxlatency=32 mingnt=16
resources: memory:d8000000-d8ffffff memory:deffc000-deffffff
memory:de000000-de7fffff
Thus xserver is not hardver accelerated.
Also /dev/dri and /dev/dri/card0 is missing.
kernel module mga is not loaded, although if i manually load by modprobe it
works fine
modprobe mga
lsmod | grep mga
mga 40811 0
drm 302817 1 mga
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