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PC to receiver to Computer monitor - All sorts of problems

post #1 of 10
Thread Starter 
So as the title says I have a PC hooked up via HDMI to my receiver, and then hooked up to a computer monitor also via HDMI. I have an ATI 4650 graphics card, a Pioneer VSX-920 receiver and a Hannspree monitor. I don't know which combination of the three is causing problems but there are quite a few. I also have a PS3 also hooked up the same way and it works fine, but may provide clues into what's happening.

First problem is that the video from the pc via HDMI is not working usually. I say usually because it has on occasion worked then stopped working at times that seem completely random as far as I know. As far as I can tell it will always display the first loading screen when the computer is booting up though. For the moment as a workaround I have the VGA connection for video and HDMI for audio. pc directly to monitor via HDMI works fine last I checked. Messing around with trying to make the HDMI display from the receiver has often made the computer crash also.

So to get the audio to work I have to turn on the HDMI video connection as a second monitor even though the video does not display. When the computer turns off the monitor for powersave it also turns off the audio signal. So reconnecting the audio or keeping it connected after the computer has been in powersave or sleep mode can often cause other issues. Often the solution is to turn the second display on again or switch the receiver input to another channel and back. Other times any number of issues happen which I cannot at this point determine any pattern other than randomness for. Sometimes the audio simply doesn't reconnect. sometimes there will be no sound but the computer's sound menu will tell me it is connected even after I go so far as to unplug the HDMI cable from the computer. Sometimes the display resolution will reset, sometimes the screen will flash black as if configuring the display and repeat the black flashing indefinitely until I tell it to turn off the 2nd display again.

Also when I do get the audio reconnected I often have to restart any programs I have open to get sound from them again.

A bizarre thing I noticed, which may or may not be a clue: when the computer is connected turning off the monitor does not halt the audio, but when the PS3 is connected turning off the monitor turns off the sound. This doesn't make any sense to me since the sound comes first in the signal chain, or why it would affect one machine but not the other.
post #2 of 10
Quote:
Originally Posted by vauba View Post


First problem is that the video from the pc via HDMI is not working usually. I say usually because it has on occasion worked then stopped working at times that seem completely random as far as I know. As far as I can tell it will always display the first loading screen when the computer is booting up though. For the moment as a workaround I have the VGA connection for video and HDMI for audio. pc directly to monitor via HDMI works fine last I checked. Messing around with trying to make the HDMI display from the receiver has often made the computer crash also.

I'm guessing you have your PC set to a non 720P or 1080P resolution. Try setting the res to 1280x720 or 1920x1080 and see if that helps with the monitor displaying a picture using HDMI.
post #3 of 10
Thread Starter 
Quote:
Originally Posted by el_kano View Post

I'm guessing you have your PC set to a non 720P or 1080P resolution. Try setting the res to 1280x720 or 1920x1080 and see if that helps with the monitor displaying a picture using HDMI.

So I experimented with this and found that the following resolutions display properly except they are the wrong aspect ratio for a widescreen monitor: 800x600, 1024x768, 1280x768, 1280x800, 1280x1024

These resolutions display but for some reason are windowboxed: 1280x720, 1680x1050, 1776x1000, 1920x1080. Edit: I tested it with HDMI directly to the monitor and these resolutions are windowboxed that way also.

A further problem is that my monitor is 1600x900 so I would need that resolution to display for things to look how they should.
post #4 of 10
Quote:
Originally Posted by vauba View Post


A further problem is that my monitor is 1600x900 so I would need that resolution to display for things to look how they should.

Page 51 of your receiver manual (http://www.pioneerelectronics.com/St...ctions0518.pdf) try setting your output resolution to Pure (assuming that your HTPC is set to 1600x900).

That's a non standard resolution - I think you're going to have a hard time getting it to work. What resolution are you running on the PS3?
post #5 of 10
Thread Starter 
Quote:
Originally Posted by brianley View Post

try setting your output resolution to Pure (assuming that your HTPC is set to 1600x900).

That's a non standard resolution - I think you're going to have a hard time getting it to work. What resolution are you running on the PS3?

No, that doesn't seem to work. Still Not getting any display at that resolution and the computer crashed again trying. The PS3 is at 1080p. Am i misunderstanding or wouldn't the pure mode turn off upscaling of standard definition content anyway.

This is baffling. Aren't a lot of the other resolutions I got to display non standard also? So if it wasn't clear I don't have a problem using VGA for video so long as I can make the audio issues go away. Is there any way to tell my computer to use the HDMI connection just for audio so it's not affected by video settings?
post #6 of 10
Quote:
Originally Posted by vauba View Post

No, that doesn't seem to work. Still Not getting any display at that resolution and the computer crashed again trying. The PS3 is at 1080p. Am i misunderstanding or wouldn't the pure mode turn off upscaling of standard definition content anyway.

This is baffling. Aren't a lot of the other resolutions I got to display non standard also? So if it wasn't clear I don't have a problem using VGA for video so long as I can make the audio issues go away. Is there any way to tell my computer to use the HDMI connection just for audio so it's not affected by video settings?

HDMI has to send both audio and video, can't do one or the other. Your receiver obviously doesn't like some of the display settings as they are non-standard.
post #7 of 10
Quote:
Originally Posted by vauba View Post

These resolutions display but for some reason are windowboxed: 1280x720, 1680x1050, 1776x1000, 1920x1080. Edit: I tested it with HDMI directly to the monitor and these resolutions are windowboxed that way also.

Have you tried adjusting the overscan in Catalyst Control Center? What version of Catalyst are you running?
post #8 of 10
I have the same problem, I think it's the Pio receiver
My setup: ATI 3870, Pio VSX-01, Westy 42"
I can either get video working correctly without audio, or vice versa
I even went as far as getting a DVI doctor and putting it in the middle
post #9 of 10
Thread Starter 
Quote:
Originally Posted by vladd View Post

Have you tried adjusting the overscan in Catalyst Control Center? What version of Catalyst are you running?

No I'm not sure how to use the overscan controls and they wouldn't fix the problem of the desired resolution not displaying at all if I'm not mistaken.

Actually I found a workaround in using the catalyst to change the HDMI connection to duplicate the display rather than extend the desktop. I still have the minor inconvenience of having to use VGA for video and switching both the monitor and receiver inputs but I can live with that.
post #10 of 10
Did you install HydraVision? I think thats the program for Ati dual monitors. My friend wanted his computer hooked up to his computer monitor and also the option to play movies on his Tv. HydraVision has a wizard setup that lets you choose what mode to install like clone mode or separate resolutions. Is HydraVision needed, I don't know. It worked for what my friend wanted.Clone mode does not work because both devices require different resolutions. If you choose the wrong resolution you will loose picture on that device. The wizard allows you to set both devices at different resolutions but only as a extended desktop option. What I did was start up the wizard and set both monitors for their required resolution and choosed one as the default monitor. Lets say the computer monitor was set to default. If he wanted to choose to use the computer on the Tv instead he would enable extended desktop on the tv .
The tv will turn on and you will see some desktop space.
I think the mouse cursor is there also so he has to move the curser back to the pc monitor.
Than select the Tv as the default monitor. Than unselect the computer monitor as extended desktop to shut it off. Everytjhing should be on the Tv screen now. If he wanted to go back to the Pc monitor he would have to go through the same steps.
I worked on his computer a few weeks ago so I can't remember the exact routine but it worked.
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