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<blockquote data-quote="kiwijunglist" data-source="post: 1152178" data-attributes="member: 76888">Just a thought:The 720P resolution detection makes me wonder that either the tv is connected to the htpc via an AV receiver, or there are two connections from the htpc, one for video to the TV and a 2nd separate hdmi audio connection.&nbsp; Perhaps when the tv is off the htpc sees a 720P display (either the 'AVR without TV' or the video display 'disappears' which makes the audio driver the primary display).&nbsp; The hdmi audio device usually defaults to a 720P display.I would suggest trying the following1. Leave TV/AVR on.&nbsp; Let HTPC sleep.&nbsp; Keep TV/AVR powered on.&nbsp; Wait 1 min. Wake HTPC.2. Leave TV/AVR on.&nbsp; Let HTPC sleep.&nbsp; Wait 1 min.&nbsp; Turn off TV.&nbsp; Turn off AVR.&nbsp; Wait 1 min.&nbsp; Wake HTPC.&nbsp; Wait 1 min.&nbsp; Turn on AVR.&nbsp; Turn on TV.3. Turn off TV.&nbsp; Turn off AVR.&nbsp; Wait 1 min.&nbsp; Let HTPC sleep.&nbsp; Wait 1 min.&nbsp; Wake&nbsp; HTPC.&nbsp; Wait 1 min.&nbsp; Turn on AVR.&nbsp; Turn on TV.If #1 works fine, and #2 /and/or/ #3 cause issues then the problem relates to the windows/gpu driver changing the resolution.&nbsp; The fix would be an programmable EDID device.&nbsp; eg. Gefen HDMI detective, however there are cheaper similar EDID devices on amazon, and some HDMI splitters will also work for this issue.</blockquote>

[QUOTE="kiwijunglist, post: 1152178, member: 76888"] Just a thought: The 720P resolution detection makes me wonder that either the tv is connected to the htpc via an AV receiver, or there are two connections from the htpc, one for video to the TV and a 2nd separate hdmi audio connection. Perhaps when the tv is off the htpc sees a 720P display (either the 'AVR without TV' or the video display 'disappears' which makes the audio driver the primary display). The hdmi audio device usually defaults to a 720P display. I would suggest trying the following 1. Leave TV/AVR on. Let HTPC sleep. Keep TV/AVR powered on. Wait 1 min. Wake HTPC. 2. Leave TV/AVR on. Let HTPC sleep. Wait 1 min. Turn off TV. Turn off AVR. Wait 1 min. Wake HTPC. Wait 1 min. Turn on AVR. Turn on TV. 3. Turn off TV. Turn off AVR. Wait 1 min. Let HTPC sleep. Wait 1 min. Wake HTPC. Wait 1 min. Turn on AVR. Turn on TV. If #1 works fine, and #2 /and/or/ #3 cause issues then the problem relates to the windows/gpu driver changing the resolution. The fix would be an programmable EDID device. eg. Gefen HDMI detective, however there are cheaper similar EDID devices on amazon, and some HDMI splitters will also work for this issue. [/QUOTE]

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