Arch Linux

Daniel

Member

Registered: 2008-01-15

Posts: 3

2.6.32 ATI KMS fu*#up

Hi folks,

after updating to kernel 2.6.32 and the latest Xorg I noticed a dramatic slowdown of my desktop (XFCE). Switching between desktops and resizing windows became reeeaaal slow.

after puzzling around I returned to a working setup:

my graphics card (lspci):
-------------------------
01:00.0 VGA compatible controller: ATI Technologies Inc RV370 5B60 [Radeon X300 (PCIE)] (prog-if 00 [VGA controller])
01:00.1 Display controller: ATI Technologies Inc RV370 [Radeon X300SE]

packages in use:
----------------
libdrm 2.4.17-2  (recompiled with --enable-radeon-experimental-api)
kernel-headers 2.6.32-1
kernel26 2.6.32.3-1
kernel26-firmware 2.6.32.3-1
kernel26-headers 2.6.32.3-1
mesa 7.7-1  (recompiled)
ati-dri 7.7-1
libgl 7.7-1
xf86-video-ati 6.12.4-3 (recompiled)
xorg-server 1.7.3.902-1

xorg.conf:
----------
Section "Module"
  Load  "glx"
  Load  "dri"
  Load  "drm"
EndSection

Section "Device"
 Identifier "device"
 Driver     "radeon"
 Option     "AGPMode" "4"
 Option     "ColorTiling" "TRUE"
 Option     "RenderAccel" "TRUE"
 Option     "AccelMethod" "EXA"
EndSection

when I enable (early) KMS, the kernel fails loading radeon/R300_cp.bin but continues boot after about 30 seconds (timeout?) -> so I disabled KMS again.

on /var/log/everything.log I see the same problem:

...
Jan 16 13:04:05 arbeit kernel: pci 0000:01:00.0: PCI INT A -> Link[APC3] -> GSI 18 (level, low) -> IRQ 18
Jan 16 13:04:05 arbeit kernel: [drm] Initialized drm 1.1.0 20060810
Jan 16 13:04:05 arbeit kernel: [drm] radeon defaulting to userspace modesetting.
Jan 16 13:04:05 arbeit kernel: pci 0000:01:00.0: setting latency timer to 64
Jan 16 13:04:05 arbeit kernel: [drm] Initialized radeon 1.31.0 20080528 for 0000:01:00.0 on minor 0
Jan 16 13:04:06 arbeit kernel: [drm] Setting GART location based on new memory map
Jan 16 13:04:06 arbeit kernel: [drm] Loading R300 Microcode
Jan 16 13:04:06 arbeit kernel: platform radeon_cp.0: firmware: requesting radeon/R300_cp.bin
Jan 16 13:04:06 arbeit load-modules.sh: 'platform:radeon_cp' is not a valid module or alias name
Jan 16 13:04:06 arbeit kernel: [drm] Num pipes: 1
Jan 16 13:04:06 arbeit kernel: [drm] writeback test succeeded in 1 usecs
...

any ideas?!

Regards
\Daniel

Dheart

Member

From: Sofia, Bulgaria

Registered: 2006-10-26

Posts: 956

Re: 2.6.32 ATI KMS fu*#up

There's a  known issue with ati KMS and 2.6.32, a number of treads spawned about this problem
read through this thread.

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