[Bug 30812] radeon module fails to initialize with modeset=1 on PPC32 with RV280

2011-03-09 Thread bugzilla-daemon
https://bugzilla.kernel.org/show_bug.cgi?id=30812





--- Comment #2 from Kim Nguyen bugzilla_kernel_...@nguyen.vg  2011-03-09 
13:59:54 ---
Created an attachment (id=50482)
 -- (https://bugzilla.kernel.org/attachment.cgi?id=50482)
output of radeontool regs '*'

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[Bug 30812] radeon module fails to initialize with modeset=1 on PPC32 with RV280

2011-03-09 Thread bugzilla-daemon
https://bugzilla.kernel.org/show_bug.cgi?id=30812





--- Comment #3 from Kim Nguyen bugzilla_kernel_...@nguyen.vg  2011-03-09 
14:00:22 ---
Created an attachment (id=50492)
 -- (https://bugzilla.kernel.org/attachment.cgi?id=50492)
output of lspci -vvv

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[Bug 30812] radeon module fails to initialize with modeset=1 on PPC32 with RV280

2011-03-09 Thread bugzilla-daemon
https://bugzilla.kernel.org/show_bug.cgi?id=30812





--- Comment #4 from Kim Nguyen bugzilla_kernel_...@nguyen.vg  2011-03-09 
14:01:06 ---
Created an attachment (id=50502)
 -- (https://bugzilla.kernel.org/attachment.cgi?id=50502)
.config used for dmesg

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[Bug 30812] radeon module fails to initialize with modeset=1 on PPC32 with RV280

2011-03-09 Thread bugzilla-daemon
https://bugzilla.kernel.org/show_bug.cgi?id=30812





--- Comment #5 from Kim Nguyen bugzilla_kernel_...@nguyen.vg  2011-03-09 
14:13:38 ---
Created an attachment (id=50512)
 -- (https://bugzilla.kernel.org/attachment.cgi?id=50512)
modified radeon_fence.c with additional DRM_INFO added.

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[Bug 30812] radeon module fails to initialize with modeset=1 on PPC32 with RV280

2011-03-09 Thread bugzilla-daemon
https://bugzilla.kernel.org/show_bug.cgi?id=30812





--- Comment #6 from Kim Nguyen bugzilla_kernel_...@nguyen.vg  2011-03-09 
14:28:03 ---
Actually after trying again with 2.6.35 I get an oops after modprobe radeon
modeset=1 which does is not present in 2.6.36 and after. dmesg attached.

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[Bug 30812] radeon module fails to initialize with modeset=1 on PPC32 with RV280

2011-03-09 Thread bugzilla-daemon
https://bugzilla.kernel.org/show_bug.cgi?id=30812





--- Comment #7 from Kim Nguyen bugzilla_kernel_...@nguyen.vg  2011-03-09 
14:29:08 ---
Created an attachment (id=50522)
 -- (https://bugzilla.kernel.org/attachment.cgi?id=50522)
dmsg after segfault of modprobe radeon modeset=1 on 2.6.35

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[Bug 30812] radeon module fails to initialize with modeset=1 on PPC32 with RV280

2011-03-09 Thread bugzilla-daemon
https://bugzilla.kernel.org/show_bug.cgi?id=30812





--- Comment #8 from Michel Dänzer mic...@daenzer.net  2011-03-09 14:42:27 ---
Have you tried radeon.agpmode=1 or radeon.agpmode=-1? There's a uninorth AGP
driver issue which prevents higher AGP transfer rates from working reliably
with KMS.

Actually, I see you mentioned on IRC that you tried radeon.agpmode=-1 but it
didn't help. Can you provide the corresponding dmesg output? Maybe for =1 as
well.

One thing that seems special about your card is that the PCI aperture is larger
than VRAM. Maybe there's a problem related to that, e.g. a mixup or incorrect
handling of the various *_vram_size fields.

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[Bug 30812] radeon module fails to initialize with modeset=1 on PPC32 with RV280

2011-03-09 Thread bugzilla-daemon
https://bugzilla.kernel.org/show_bug.cgi?id=30812





--- Comment #9 from Kim Nguyen bugzilla_kernel_...@nguyen.vg  2011-03-09 
15:32:53 ---
radeon.agpmode=1 works! Seems X is happy too, glxinfo shows direct rendering.
actually agpmode=-1 or agpmode  1 both trigger the bug.

Would it be easy to default to 1 if uninorth agp is detected ? (maybe not worth
it, there are not so many ppc32 configs out there. So it might just be enough
to advertise on the radeon faq/howto page that agpmode=1 is recommended for
uninorth agp).

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