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[pvautrin <pvautrin@xxxxxxxxx>]

I compared again all the logs from hardy, jaunty and karmic and indeed
the only differences are about AGP aperture.

Even though size and address are detected correctly in dmesg (and iomem/ioports are in line with WinXP), ...
[    0.004000] Checking aperture...
[    0.004000] Node 0: aperture @ e0000000 size 64 MB
[    0.480127] agpgart-amd64 0000:00:00.0: AGP bridge [1106/0204]
[    0.483619] agpgart-amd64 0000:00:00.0: AGP aperture is 64M @ 0xe0000000

... the resource allocation fails.
Hardy
[   31.135720] PCI: Using ACPI for IRQ routing
[   31.135723] PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post a report
[   31.135735] PCI: Cannot allocate resource region 0 of device 0000:00:00.0
Jaunty
[    0.470669] PCI: Using ACPI for IRQ routing
[    0.470681] pci 0000:00:00.0: BAR 0: can't allocate resource
Karmic
[    0.120980] PCI: Using ACPI for IRQ routing
[    0.120997] pci 0000:00:00.0: BAR 0: address space collision on of device [0xe0000000-0xe3ffffff]
[    0.121059] pci 0000:00:00.0: BAR 0: can't allocate resource
Jaunty with acpi=off option in grub's menu.lst
[    0.261932] ACPI: Interpreter disabled.
[    0.264037] pci 0000:00:00.0: BAR 0: can't allocate resource

So this is probably why drm fails later on
[   30.201734] [drm] Can't use AGP base @0xe0000000, won't fit

Pureblood, you have the same drm error, can you check if you also have
the allocation error before that in your dmesg?

As for the Xorg.0.log, the only error I found is with aperture size detection (32M instead of 64M)
(II) RADEON(0): [agp] 32768 kB allocated with handle 0x00000001

I tried Option "GARTSize" "64" but although 64M get allocated, it still
results in a black screen, probably because the issue happens before.


So, is this enough information to determine in which part of the code the bug lies?
If it's really due to xserver-xorg-video-ati (Ubuntu), can we assign the appropriate people now?
If not, should another bug be opened in the correct bug tracker? Would that be bugs.freedesktop.org? bugzilla.kernel.org?

-- 
[HD3650] Kubuntu: garbage screen
https://bugs.launchpad.net/bugs/368187
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