[Bug 27001] [RV740] KMS fails with HD4770 + DELL3007WFP-HC

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=27001

--- Comment #11 from Alex Deucher <agd5f at yahoo.com> 2010-04-13 08:52:49 PDT ---
(In reply to comment #6)
> Just tried kernel 2.6.34-rc3 (not from mainline, self compiled, no source
> changes).
> - no EDID detection of the monitor (driver does that in UMS)

Can you attach your dmesg from 2.6.34-rc3?  I suspect you need this patch:
http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=95beb690170e6ce918fe53c73a0fcc7cf64d704a

Finally, can you try 2.6.33 with the new_pll=0 radeon module param?  E.g., set
it when you load radeon:
modprobe radeon modeset=1 new_pll=0
or on the kernel command line:
radeon.new_pll=0

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