Re: about the linux ATI proprietary drivers writers team
- From: Shadow_7 <wwwShadow7@xxxxxxxxxxxxxxx>
- Date: Mon, 28 Jan 2008 00:56:18 -0000
I would like to know whether it is normal that ATI releases proprietary
drivers for linux that are quite a lot more buggy and a less fine than for
windows?
They are buggy. But they are specifically designed for odd distros like
RedHat, and SuSE. Under debian, the one main issue I've had is that Mesa
OpenGL library overrides the ATI one. Even when building debs from
the ati installer, I still have to manually replace /usr/lib/libGL.so.1.2
with the file from /usr/lib/fglrx/diversions/libGL.so.1.2.
dpkg-divert --list | grep -i "fglrx"
If you don't do this, then X uses the Mesa acceleration (software) to do
the rendering.
glxinfo | grep -i "direct"
Should show:
direct rendering: Yes
glxinfo | grep -i "^opengl"
Should show(or something like this):
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon Xpress Series
OpenGL version string: 2.1.7170 Release
And NOT Mesa if you want DRI acceleration. And otherwise use the ATI
drivers, and not the mesa ones.
But I digress, they are buggy. Especially if you venture into things like
xinerama. The main bug of late is that the cursor gets a little whacked.
Unfortunately they are even buggier on newer versions of X. But seem a
lot more stable / usable on the older versions of X.
When I first started using the ATI drivers on my Radeon Xpress 200M 5595
(PCIE) it would only work in 24 bit colors. And is otherwise picky about
what options are in your xorg.conf. Which aticonfig is not very good at
modifying IMO. But better than nothing I guess.
With the radeon open source driver, I have more color modes and more
resolution modes available for use. Under the ATI driver, I'm quite
limited in those regards. Not that I've used the radeon driver lately.
The main issue I had with the radeon driver was that the 3D acceleration
was virtually non-existent. But it was nice to have more resolution modes
available so things didn't get so stretched out when Cntrl+Alt+[+]-ing
through the modes. This 1280x800 display is quite weird looking at some
of the traditional resolutions. Anyway enough rambling.
HTH
.
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