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Discussion Starter · #1 ·
Sorry for cross posting, it was suggested in the AVR forum that I post this in the Mac HTPC section, so here's goes ( Original Here )


I've got a 2007-era intel Mac Mini hooked up to my brand spankin' new Pioneer VSX-1120 AVR with a DVI to HDMI adapter + cable. The AVR is then connected to a Sharp 37" LCD (1080p), again, via HDMI. I also have an AppleTV 2 and a Samsung Blu-Ray player connected.


Most of the time the set up works great, but after a while--after switching between the other HDMI inputs, or bringing up the onscreen menu--the Mac Mini display ends up getting "cropped" and sometimes is off-center on the screen.




Once it's in this state, nothing I do (switching resolutions, re-plugging the cable, etc) seems to bring the screen back to its normal 'full' state besides rebooting the Mac.


I've managed to recreate a couple of scenarios that will cause this behavior to occur:


1) Set the Mac mini to 1080p output

2) Reboot (just to make sure the display is uncorrupted)

3) Set the Mac to 720p output


OR


1)Set the mac to 1080p output

2) Reboot to 'uncorrupt'

3) Put the mac to sleep

4) Wake the Mac up


-- I've been using the mini plugged directly into the TV for years and it "just works" at either 1080p or 720p.


-- I've tried a couple different HDMI cables, but that doesn't make a difference


-- all my other HDMI devices are working fine


-- I've tried enabling and disabling the various HDMI upscaling modes on the VSX-1120, also doesn't seem to make a difference


Any suggestions?


Obviously, I could just plug the Mac directly into the TV but, one of the reasons I got the Pioneer was to simplify switching between inputs by consolidating all my connections (its replacing an Onkyo with no HDMI inputs). I'm trying to decide if I should keep this receiver or return it and find something comparable that doesn't exhibit this issue, or figure out if this is something that's just an inherent problem with the Mac and would occur on any receiver.
 

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Quote:
I've been using the mini plugged directly into the TV for years and it "just works" at either 1080p or 720p.

That's the way Apple intends you use it.

Quote:
Any suggestions?

Get a Gefen DVI/HDMI Detective.

Quote:
Obviously, I could just plug the Mac directly into the TV but, one of the reasons I got the Pioneer was to simplify switching between inputs by consolidating all my connections

Nice ideal, often too much hassle to implement in reality. Most universal remotes can easily handle you still connecting the Mac video directly to your TV and running audio to your Pioneer and make the necessary switches back and forth transparently.

Quote:
I'm trying to decide if I should keep this receiver or return it and find something comparable that doesn't exhibit this issue, or figure out if this is something that's just an inherent problem with the Mac and would occur on any receiver.

It doesn't occur with every Mac, AVR and HDTV combination, some users do manage to pass through an AVR just fine and retain a connection to their display even when they switch away and back--some HDTVs are particularly problematic sending EDID info back through an AVR--but, bottom line, plenty of folks have had trouble with this for years. Way too many repetitive posts about this issue here.


The advice is always the same: the Gefen device is mentioned by many users as the best solution, it'll keep the Mac from sensing it is no longer connected to a display. So I'd say if you're otherwise happy with the AVR, and insist on not running another cable to your TV, try the Gefen.
 
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