Public bug reported:
I have just installed Ubuntu 10.04 onto a computer with an AGP Radeon
9600XT Bravo, The motherboard is an nForce 3 Asus K8N. Going by the
error messages and worse performance over Windows, I think there is
something wrong with the AGP.
On bootup I get some error messages (reproduced from dmesg so may not be
exactly as they appear on the bootsplash):
[ 17.367200] nForce2_smbus 0000:00:01.1: Error probing SMB1.
[ 18.490166] [drm:r100_ring_test] *ERROR* radeon: ring test failed
(sracth(0x15E4)=0xCAFEDEAD)
[ 18.490214] [drm:r100_cp_init] *ERROR* radeon: cp isn't working (-22).
[ 18.490257] radeon 0000:01:00.0: failled initializing CP (-22).
[ 18.490299] radeon 0000:01:00.0: Disabling GPU acceleration
[ 18.662106] [drm:r100_cp_fini] *ERROR* Wait for CP idle timeout, shutting
down CP.
[ 18.833904] Failed to wait GUI idle while programming pipes. Bad things
might happen.
[ 19.155912] [drm] radeon: cp finalized
[ 19.157334] [drm] CP reset succeed (RBBM_STATUS=0x00000140)
[ 19.157337] [drm] GPU reset succeed (RBBM_STATUS=0x00000140)
[ 19.157350] [drm] radeon: cp finalized
[ 19.157401] [TTM] Zone kernel: Used memory at exit: 0 kiB.
[ 19.157406] [TTM] Zone highmem: Used memory at exit: 0 kiB.
[ 19.157409] [drm] radeon: ttm finalized
[ 19.157413] [drm] Forcing AGP to PCI mode
[ 19.158722] [drm] GPU reset succeed (RBBM_STATUS=0x00000140)
** Affects: ubuntu
Importance: Undecided
Status: New
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Radeon 9600XT AGP running in PCI mode?
https://bugs.launchpad.net/bugs/622495
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