On Wed, 22 Sep 2004 18:56:40 -0400 (EDT), Vladimir Dergachev <[EMAIL PROTECTED]> wrote:
I think I've seen this one - check your BIOS settings - maybe you need to enable something AGP related there.
As I recall, since the X server doesn't have official 8x agp support yet for radeons, you have to force the bridge into 4x mode in the bios so it comes up in 4x mode.
How very interesting. Alex - could you tell me what is involved in providing AGP 8x mode ? I thought the speed was invisible to software.
This patch: http://penguinppc.org/~daenzer/DRI/radeon-agp8x.diff
although I hear the speed difference between 4x and 8x is minimal...at least on r200 hardware. r300 may be different. I don't have an 8x motherboard to test.
If someone could test the patch we should probably apply it at some point.
That doesn't look though like it would fix (didn't test) the problem I have with agpgart:
Sep 22 18:35:31 ZakTower kernel: agpgart: Found an AGP 3.5 compliant device at 0000:00:0
0.0.
Sep 22 18:35:31 ZakTower kernel: agpgart: Device is in legacy mode, falling back to 2.x
Sep 22 18:35:31 ZakTower kernel: agpgart: Putting AGP V2 device at 0000:00:00.0 into 0x mode
Sep 22 18:35:31 ZakTower kernel: agpgart: Putting AGP V2 device at 0000:01:00.0 into 0x mode
Sep 22 18:35:31 ZakTower kernel: agpgart: Putting AGP V2 device at 0000:01:00.1 into 0x mode
Seems to happen with AGP 3.0 (or only 3.5? whatever that is) bridges and AGP 2.0 cards. Don't think though that's a radeon problem, not even sure it really is a problem (still works, though I don't know what happens if agpgart tries to set a 0x mode?), but it certainly is confusing...
Roland
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