[Bug 56038] New: "r100_ring_test] *ERROR*" messages sometimes on boot with ati radeon 9000 AGP ( r200 driver, dri2 KMS enabled )

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=56038

          Priority: medium
            Bug ID: 56038
          Assignee: dri-devel at lists.freedesktop.org
           Summary: "r100_ring_test] *ERROR*" messages sometimes on boot
                    with ati radeon 9000 AGP ( r200 driver, dri2 KMS
                    enabled )
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: mister.freeman at laposte.net
          Hardware: x86 (IA32)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Created attachment 68625
  --> https://bugs.freedesktop.org/attachment.cgi?id=68625&action=edit
dmesg output

randomly ( it's very rare, 90% of the time I don't have this error message ) I
can see these error messages on boot :

[    1.516518] [drm] Loading R200 Microcode
[    1.517953] [drm] radeon: ring at 0x00000000E0001000
[    1.665941] [drm:r100_ring_test] *ERROR* radeon: ring test failed
(scratch(0x15E4)=0xCAFEDEAD)
[    1.665996] [drm:r100_cp_init] *ERROR* radeon: cp isn't working (-22).
[    1.666043] radeon 0000:01:00.0: failed initializing CP (-22).
[    1.666084] radeon 0000:01:00.0: Disabling GPU acceleration
[    1.812455] [drm:r100_cp_fini] *ERROR* Wait for CP idle timeout, shutting
down CP.
[    1.812600] [drm] radeon: cp finalized
[    1.812629] [drm] radeon: cp finalized

but the boot process continues and I see no problem on KDE4.9.2 and 3d games,

this bug occurs since the update of ati-dri 9.0 and xorg packages 1.13 on my
archlinux 32 bits installation, before that I had never seen this kind of error
message

my system :

- archlinux 32 bits
- laptop pentium 4 2.4 ghz 1,2 Gb ram
- video card: ati radeon 9000 agp ( M9 rv250, r200 driver, dri2 enabled with
kms early start )
- SIS645DX chipset on motherboard

You can fin an attachment ( dmesg output ) with this message,

this bug may related to another ( startx problems ) :

https://bugs.freedesktop.org/show_bug.cgi?id=55982

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