I have a mac mini as a media player connected via HDMI to my tv. I recently added a cool auto-detecting HDMI switch to the works and everything seemed great, except I'd get no video when switching from one of the other inputs to the mac. If I slept and woke the mac, video would appear, but that was a lame option.
I searched around and found lots of forums where people had similar problems. Some were resorting to buying a $60 "DVI Detective" which sits between the mac and display and tricks the mac so it never sees the display go away.
Aside from blowing another 60 bucks I was bothered by the notion of adding yet another device to the mounting list of boxes and contraptions it seems to take just to watch some tv these days. I decided to try a software approach. The result is a tiny program I've attached (source included) that I call HDMI Reviver. It watches for when the physical display goes away at which point it asks the graphics hardware to check for a new display every 5 seconds. So when the mac is connected to the display or the switch input is set, within 5 seconds the picture returns.
UPDATE 2010/02/23 With feedback from a couple commenters to allow for use on macs with different hardware I modified the program to take the graphic hardware and display device as parameters. You'll need to know a bit about the "ioreg" command though to figure out what those values might be for your hardware. Also, use at your own risk- I can't think of any reason why there would be a problem, but there's no guarantees.
Saturday, April 11, 2009
I haven't updated my 1000klub website with new content in just about 10 years. I've wanted to put various things up over the years it was always too much of a hassle to dust of my ancient html skills and edit the site. So now I'm going to try using the blogger interface to allow for faster and easier updating. Hopefully that will inspire me to make better use of my site.