Volume control ineffective if HDMI audio device goes offline. (1 Viewer)


Portal Pro
December 26, 2006
Maidstone, UK
Home Country
England England
TV-Server Version: 1.0 + 01-23-2009--22-00
MediaPortal Version: 1.0 + 01-23-2009--22-00
MediaPortal Skin: BlueThree Wide
Windows Version: Vista Ultimate SP1
CPU Type: Pentium M 760 (2.0GHz/533/2Mb)
HDD: Seagate 300Gb 7200RPM SATA 150
Memory: 2GB PC2-4200
Motherboard: MSI Speedster-FA4 (MS-9625) [Intel 915GM chipset]
Video Card: ASUS EAH3450 512MB
Video Card Driver: 8.573.0.0 (Catalyst 9.1)
Sound Card: Intel ICH6 HD Audio / Realtek ALC880
Sound Card AC3: no AC3
Sound Card Driver: (R2.14)
1. TV Card: BlackGold BGT3540
1. TV Card Type: 2xDVB-T/Alog, 2xDVB-S
1. TV Card Driver:
2. TV Card: Nebula DigiTV PCI
2. TV Card Type: 1xDVB-T
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: SAF 3.40 (w/PowerDVD)
MPEG2 Audio Codec: SAF 3.40 (MPC - MPA Audio)
h.264 Video Codec: PowerDVD
Satelite/CableTV Provider: Astra 28.2°E & Eurobird 28.5°E
HTPC Case: Antec Aria
Cooling: Stock
Power Supply: Stock
Remote: MCE (mk 2)
TV: Samsung 40in LCD LE40A686
TV - HTPC Connection: HDMI

Hi all... I have a bit of a strange problem with the volume control in MP.

I have connected my HTPC to my LCD using HDMI. Both audio and video are sent out of the HDMI port on my ATI video card.

My problem occurs if I switch off the LCD panel or if MediaPortal turns the panel off automatically. Once the screen is powered back on, the volume control in MP is ineffective. Although I can see the OSD going up and down, the volume level doesn't actually change. If I quit and restart MP the volume control becomes effective again but only until the screen next blanks. So... it seems that MP doesn't like the fact that the audio device goes offline when the panel is turned off.

I thought I could work around the problem by using the analogue audio output on the PC but I get significant lip-sync problems, probably due to the HDMI 1.3 lipsync specification.

So, my question is, can this be fixed?


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