From: David Müller Date: Thu, 6 Jan 2011 12:29:32 +0000 (+0000) Subject: drm/i915/crt: Check for a analog monitor in case of DVI-I X-Git-Tag: v2.6.37.1~16 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=74f14ea690ddd37acebfd20c1b725c16d27c89c3;p=pandora-kernel.git drm/i915/crt: Check for a analog monitor in case of DVI-I commit f5afcd3dd0dca7fe869311c51da54d5a889191ba upstream. 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 Signed-off-by: Chris Wilson Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed