Hi,
Problem could be that you have other packages installed in the xorg-driver
package which were pulled automatically when you installed X. That means
you have probably other modules and dependencies unresolved. What I did was
first of all removing all unecessary xorg driver packages, xorg
Hi,
Actually if you read through my report I finally figured what is the
problem. It is not ubuntu's fault. Xorg upstream simply decided to rip XAA
from Xorg 1.13, and 14.04 has Xorg 1.15 or something like that. So
basically in 12.04 there was no hardware acceleration either unless you
defined
Public bug reported:
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
I should mention that it was working flawlessly in 12.04, we had harware
acceleration with MGA driver at 1920x1080@60hz resolution.
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Some relevant information from Xorg.0.log
12.04 Xorg.0.log
[ 4.534] (--) PCI:*(0:10:0:0) 102b:0534:1028:04cf rev 0, Mem @
0xd800/16777216, 0xdeffc000/16384, 0xde00/8388608
[ 4.557] (--) MGA(0): Chipset: mgag200 ER SH7757
[ 4.557] (--) MGA(0): Linear framebuffer at 0xD800
Actually it seems that the cause is the new xserver-xorg-core, it seems
that XAA rendering was ripped out from 1.15.1 (no libxaa.so in package).
In old Xorg.0.log rendering was falling back to XAA:
[ 4.696] (II) MGA(0): Using XFree86 Acceleration Architecture (XAA)
[ 4.696]Screen to
Reading documentation on the mga_drv.so and checking the source files of
xserver-xorg-video-mga_1.6.3-1build1_amd64.deb I see that matrox driver has a
built in support for EXA in config.h
/* Build support for Exa */
#define USE_EXA 1
/* Build support for XAA */
/* #undef USE_XAA */
/* Version
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
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