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authorDavid Müller <d.mueller@elsoft.ch>2011-01-06 12:29:32 +0000
committerChris Wilson <chris@chris-wilson.co.uk>2011-01-11 20:26:33 +0000
commitf5afcd3dd0dca7fe869311c51da54d5a889191ba (patch)
tree95217912d2c7265c12ec8c45c37067fb84be84ac /drivers/eisa
parent37f809755845cc3e18e8216c04525bdb885fa13b (diff)
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drm/i915/crt: Check for a analog monitor in case of DVI-I
Since Linux 2.6.36 the digital output on my system (855GME + DVI-I) is not working any longer. The analog output is always activated regardless of the type of monitor attached. The culprit seems to be intel_crt_detect_ddc(), which returns true as soon as an ACK from the EDID device is received. Obviously this approach does not work with DVI-I where the analog and digital outputs share a common DDC bus. In a similar manner to the shared DDC wire, ala the "Mac Mini Hack", we need an additional check to make sure that there really is an analog device attached to the DDC. Signed-off-by: David Müller <d.mueller@elsoft.ch> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
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