2010-12-27, 11:12 AM
Like many others, my HTPC suffered from several HDMI handshake-related issues, mainly loss of audio after coming out of sleep mode. After a particularly frustrating 2009 Christmas, I finally solved all of these problems by throwing money at a Gefen HDMI Detective, which tricks the PC into thinking the TV and amplifier are connected at all times, even when they're not. It was expensive, but worth every penny in WAF points.
That same PC, which runs GBPVR on XP, can now dual-boot into a clean Windows 7 install ready for NPVR testing, but with the following strange issue:
- PC is on and running
- TV/Amp either get turned off or inputs are switched
- PC continues to run
- When the TV/Amp are turned on again, the PC goes *into* sleep mode
There's two weird things here. a) why is it even happening at all; it seems to be the reverse of every HDMI-related problem I've read about, and b) why isn't the Gefen stopping it from happening.
I'm sure it's probably solvable, but I'm at a loss as to where to start investigating. I'm assuming an EDID override won't help, as that's just a software solution to what the Gefen offers. Telling the PC to "never sleep" doesn't help (and ultimately I do want it to be able to sleep).
I really don't get it. How can whatever weird signal it's getting when the TV and amp turn back on force it into sleep mode? It can't be a hardware fault, because it doesn't happen with XP.
The PC's HDMI output is from an ATI HD4550, sitting in an Asus M2A-VM motherboard.
Iain
That same PC, which runs GBPVR on XP, can now dual-boot into a clean Windows 7 install ready for NPVR testing, but with the following strange issue:
- PC is on and running
- TV/Amp either get turned off or inputs are switched
- PC continues to run
- When the TV/Amp are turned on again, the PC goes *into* sleep mode
There's two weird things here. a) why is it even happening at all; it seems to be the reverse of every HDMI-related problem I've read about, and b) why isn't the Gefen stopping it from happening.
I'm sure it's probably solvable, but I'm at a loss as to where to start investigating. I'm assuming an EDID override won't help, as that's just a software solution to what the Gefen offers. Telling the PC to "never sleep" doesn't help (and ultimately I do want it to be able to sleep).
I really don't get it. How can whatever weird signal it's getting when the TV and amp turn back on force it into sleep mode? It can't be a hardware fault, because it doesn't happen with XP.
The PC's HDMI output is from an ATI HD4550, sitting in an Asus M2A-VM motherboard.
Iain