slow exa radeon, dri disabled

[Torgeir Veimo]

I get this when trying latest CVS;

(II) RADEON(0): MMIO registers at 0xd0100000
(II) RADEON(0): PCI bus 1 card 0 func 0
(**) RADEON(0): Depth 24, (--) framebuffer bpp 32
(II) RADEON(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps)
(==) RADEON(0): Default visual is TrueColor
(**) RADEON(0): Option "AGPMode" "4"
(**) RADEON(0): Option "AGPFastWrite" "on"
(**) RADEON(0): Option "DynamicClocks" "on"
(**) RADEON(0): Option "AccelMethod" "exa"
...
(II) RADEON(0): initializing int10
(II) RADEON(0): Primary V_BIOS segment is: 0xc000
(--) RADEON(0): Chipset: "ATI Radeon Mobility M7 LW (AGP)" (ChipID =
0x4c57)
(--) RADEON(0): Linear framebuffer at 0xe8000000
(--) RADEON(0): VideoRAM: 16384 kByte (64 bit DDR SDRAM)
(II) RADEON(0): AGP card detected
(II) RADEON(0): Color tiling enabled by default
...
(--) RADEON(0): Virtual size is 1400x1050 (pitch 1408)
...
(II) RADEON(0): Page flipping disabled
(II) RADEON(0): Will try to use DMA for Xv image transfers
...
(==) RADEON(0): Write-combining range (0xe8000000,0x1000000)
(II) RADEON(0): Dynamic Clock Scaling Enabled
(II) RADEON(0): BIOS HotKeys Disabled
(EE) RADEON(0): Static buffer allocation failed.  Disabling DRI.
(EE) RADEON(0): At least 17325 kB of video memory needed at this
resolution and depth.
(II) RADEON(0): Depth moves disabled by default
(II) RADEON(0): Allocating from a screen of 16384 kb
(II) RADEON(0): Will use 5808 kb for front buffer at offset 0x00000000
(II) RADEON(0): Will use 10576 kb for X Server offscreen at offset
0x005ac000
(II) RADEON(0): Render acceleration enabled for R100 type cards.
(II) RADEON(0): Acceleration enabled
(==) RADEON(0): Backing store disabled
(==) RADEON(0): Silken mouse enabled
(II) RADEON(0): Using hardware cursor (offset 5947392)
...
(WW) RADEON(0): Direct rendering disabled

This is a thinkpad T30. Is 16MB memory sufficient for using EXA
acceleration. using either the xcompmgr or the built in compositor
support in metacity runs a bit slow when I get more that a few windows
on screen.


-- 
Torgeir Veimo <torgeir at pobox.com>