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387 posts

Ultimate Geek

# 240736 23-Sep-2018 16:56
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This old issue for some of you I bet ;)




Toshiba Qosmio X70-A
Windows 10 - 1803


Display connects fine direct HDMI to TV (LG) and through Receiver (Yamaha), but doesn't have any sound.


When connected in HDMI, Sound control Playback box does not list anything other than the Speakers on the Laptop.




Other Laptop (HP), it comes up with LG or Yamaha and I switch to those then configure the surround sound etc etc rather than playing audio through laptop speakers.




Spent the day trawling through a **** ton of pages, but as per usual they all go off topic and the "microsoft" support doesn't quite understand what people are saying ;)




Now, under my Device Manager, I just have "Conextant SmartAudio HD".  BUT, when I select 'Show Hidden Devices', I get Intel Display Audio showing up, but this comes with a Code 45 saying it's not connected.  I think this is the issue... ?  




Would love some help and will provide as much details as possible..   just want this audio issue fixed so i can hook this up properly.

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387 posts

Ultimate Geek

  # 2095775 24-Sep-2018 20:12
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Photo (when connected to TV)




Sound Panel:




Device Manager:






Updated my Nvidia to the latest driver possible..  but because this laptop is a switchable graphics, it seems to only use the Intel Graphics when going HDMI out.  A lot of looking online, looks like this is normal.




Just for reference, this is what it looks like when my HP is connected;

2130 posts

Uber Geek

  # 2095789 24-Sep-2018 20:25
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It is often possible to force the use of the NVIDIA card.

NVIDIA control panel>manage 3D settings

Location: Dunedin



387 posts

Ultimate Geek

  # 2095793 24-Sep-2018 20:29
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I have mine set to the Nvidia in that options, but still when outputting it just goes to Intel..  Seems to be just how that works.

2130 posts

Uber Geek

  # 2095795 24-Sep-2018 20:32
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My sound panel shows HDMI unconnected. I'd suggest that machine just doesn't do audio over HDMI.

Location: Dunedin


387 posts

Ultimate Geek

  # 2095802 24-Sep-2018 20:45
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Is that even possible with HDMI?  limiting to video only?

3594 posts

Uber Geek

  # 2095806 24-Sep-2018 20:50
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'Back in the day' there were actually AVR's on the market that only did video over HDMI, no audio...


I remember seeing old Marantz AVR's sitting in stores for years and years and years - no one wants a video only HDMI connection!

387 posts

Ultimate Geek

  # 2095809 24-Sep-2018 20:54
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I'll be gutted if that really is the case..  shouldn't be advertised as a Gaming laptop!  


468 posts

Ultimate Geek

  # 2099540 1-Oct-2018 17:10
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some old motherboards you had to put a jumper cable over on the motherboard from an audio port to the HDMI jumper

387 posts

Ultimate Geek

  # 2099593 1-Oct-2018 19:09
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Yeah I cant imagine that being the case with this..  it's more like driver,chipset, windows 10 issues..


Some people over on the GeForce forums are giving me some good suggestions, most of which i've already tried though.




Trying to get a refund for this laptop, but the seller has gone silent.  Might have to go small claims court I think.

387 posts

Ultimate Geek

  # 2106890 12-Oct-2018 17:33
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Just an update.




It was the BIOS that was screwing it all up.  Taking the BIOS version down to 1.1 fixed it completely.  Audio via HDMI and can now also change the resolution up to 4K.

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