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[brjhaverkamp <bert@xxxxxxxxxxxxxxxx>]

I see this problem too on a G45 machine. The dmesg output continues forever
[  141.413298] i915 0000:00:02.0: HDMI Type A-2: no EDID data
[  142.236246] i2c-adapter i2c-3: unable to read EDID block.
[  142.236251] i915 0000:00:02.0: HDMI Type A-2: no EDID data
[  142.240696] i2c-adapter i2c-3: unable to read EDID block.
[  142.240700] i915 0000:00:02.0: HDMI Type A-2: no EDID data
[  142.937198] i2c-adapter i2c-3: unable to read EDID block.
[  142.937202] i915 0000:00:02.0: HDMI Type A-2: no EDID data
[  142.941687] i2c-adapter i2c-3: unable to read EDID block.
[  142.941690] i915 0000:00:02.0: HDMI Type A-2: no EDID data

Difference here is that I am unable to run X at all. Last lines in Xorg.0.log are
(II) intel(0): [DRI2] Setup complete
(**) intel(0): Tiling enabled
(**) intel(0): SwapBuffers wait enabled
(==) intel(0): VideoRam: 262144 KB
(II) intel(0): Attempting memory allocation with tiled buffers.

The screen stays blank.

-- 
On Intel G45 unable to read EDID block in Dmesg after move from G35 to G45
https://bugs.launchpad.net/bugs/487185
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