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The DRI driver performs less than the fglrx driver. See: http://www.phoronix.com/vr.php?view=8656Originally Posted by WalmartSniperLX
For tweaking, see: http://dri.freedesktop.org/wiki/ATIR...33fee7003e858d
How good can the DRI drivers be?
I have a Radeon 9250 PCI card and I cannot get fglrx working because of the hassle with the fact that AMD/ATI discontinued support for my gpu with new driver releases. The latest driver compatible is 8.28.8 and it doesn't want to work with my kernel 2.6.20 (FC6) and I don't feel like going thru the hassle to patch since I feel as if the performance is better with the open source driver with this gpu (based on my real-life tests when running Ubuntu 6.06 with kernel 2.6.16). Would I be correct in saying this? How good can the DRI radeon drivers be and how can I tweak them to the best?
Last edited by WalmartSniperLX; 04-23-2007 at 11:39 AM.
The DRI driver performs less than the fglrx driver. See: http://www.phoronix.com/vr.php?view=8656
For tweaking, see: http://dri.freedesktop.org/wiki/ATIR...33fee7003e858d
Thanks. As far as it performing less than fglrx, I would agree and disagree. I had an X1600pro in another pc using fglrx (8.34.x I think) that performed less than my mobile 9200 using the radeon driver. Its more gpu specific on which one performs better.
Jw but what is the difference between the DRI modes (0660, 0666, etc)?
It's for restricting who can access direct rendering. For all users, use 0666
the mentioned performance comparisons were for r300/r400 chipset, which is being reverse engineered even now.
the 9250 card has an r200 variant chipset (rv280). ati gave out full specs for r200, so i believe r200 support is quite good in the open driver.
the open drivers work quite well on this card.
Here's some older benchmarks from the Radeon 9250 with both drivers: http://www.phoronix.com/vr.php?view=6482
Ok so basically DRI support is low because they can only build off what ATI/AMD releases, which isn't everything for copyright protection?
Also, if this is the case, how do I know Im getting my money worth of performance with my chipset/cpu using the Linux modules/in kernel drivers? (I hope Im not going too off topic with this question)
hard to tell. but they're constantly improving. i wonder what will the introduction of TTM change in performance. besides, many things could have changed since those benchmarks were done in the open driver code.
my friend uses his 9600 agp card daily with open drivers and he doesn't have any complaints about performance, as far as i can tell.
What would be the best way to upgrade the open source driver?
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