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Re: OpenSource ATI Driver Performance (Was: Re: Warning: rpmfusion nvidia driver needs a special xorg.conf setup.)



On Sun, 2008-11-30 at 00:05 -0600, Frank Cox wrote:
> On Sat, 29 Nov 2008 09:52:28 -0700
> "Christopher A. Williams" <chriswfedora cawllc com> wrote:
> 
> > Wow... A simple "No, it's not working on F10 yet because, among other
> > things, the only known way to get it to work is to downgrade libdrm -
> > which we think is a _really_ bad idea!" would have done just fine.
> 
> Are you sure that you still need the proprietary ATI driver?  I couldn't get
> the open-source driver to work with my widescreen monitor (Acer AL2223W) on F9
> and below so I very reluctantly installed the proprietary driver.
> 
> But with F10 the open-source raedon driver works great with my X1550 card and
> my display looks beautiful (or at least, not much different than it did with
> the proprietary driver. )
> 
> [frankcox mutt ~]$ glxgears
> 7606 frames in 5.0 seconds = 1521.163 FPS
> 7600 frames in 5.0 seconds = 1519.919 FPS
> 7600 frames in 5.0 seconds = 1519.894 FPS
> 7575 frames in 5.0 seconds = 1514.896 FPS
> 
> Suits me fine.  And no more horsing around with any proprietary driver.

No such luck here. This is running on my laptop, which has switchable
graphics. You change this in CMOS. Here goes...

Laptop: Lenovo ThinkPad T400 (Model 2765-T6U)
Internal Graphics: Intel Cantiga Graphics Controller
Discreete Graphics: ATI Mobility Radeon HD3470

On Intel "Integrated" Graphics (Open Source Intel Driver):
[chris SpikePad Desktop]$ glxgears
6314 frames in 5.0 seconds = 1262.720 FPS
3286 frames in 5.0 seconds = 656.852 FPS
2185 frames in 5.0 seconds = 436.959 FPS
6359 frames in 5.0 seconds = 1271.672 FPS
6424 frames in 5.0 seconds = 1284.792 FPS
6448 frames in 5.0 seconds = 1289.470 FPS

On ATI "Discreete" Graphics (Open Source Radeon Driver):
[chris SpikePad Desktop]$ glxgears
1965 frames in 5.0 seconds = 392.970 FPS
1973 frames in 5.0 seconds = 394.572 FPS
1974 frames in 5.0 seconds = 394.695 FPS
1973 frames in 5.0 seconds = 394.441 FPS
1972 frames in 5.0 seconds = 394.300 FPS
1973 frames in 5.0 seconds = 394.402 FPS

On ATI "Discreete" Graphics (Open Source RadeonHD Driver):
[chris SpikePad Desktop]$ glxgears
1913 frames in 5.0 seconds = 382.543 FPS
1910 frames in 5.0 seconds = 381.886 FPS
1911 frames in 5.0 seconds = 382.150 FPS
1909 frames in 5.0 seconds = 381.639 FPS
1910 frames in 5.0 seconds = 381.951 FPS
1908 frames in 5.0 seconds = 381.418 FPS

Not to mention that Compiz doesn't work at all with either ATI driver.

...So, yeah, I think I need the proprietary ATI driver if I'm going to
get any performance out of my laptop's ATI graphics controller. It's
supposed to be faster (according to Lenovo) than the Intel controller as
well.

Kind of ironic that the "slower" Intel controller works better, with a
default "out of the box" setup than the ATI controller, ain't it. :)

Cheers,

Chris

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