Author Topic: External audio output Mint 17.1  (Read 5328 times)

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Offline chemicalfan

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External audio output Mint 17.1
« on: January 26, 2015, 09:57:55 am »
I finally got round to testing my new HDMI cable with my laptop yesterday, and was most impressed that it was very much plug-and-play. Linux Mint managed to detect the TV, and automatically set resolution & "stretch" the desktop to it, all within 2 seconds without me having to do anything. However, it didn't take the audio - that was still left through the laptop speakers (come to think of it, I didn't actually turn the TV up, so it could be my failing there  :-[)

Anyone, this post is still valid because I want to get Bluetooth audio working. We have a soundbar that has Bluetooth input, and ideally I'd like to stream the audio from laptop to soundbar whilst the HDMI cable is inserted into the TV. I went into the "Bluetooth settings" in Mint, but it said "no Bluetooth devices detected". Windows would beg to differ. I reckon this is a "lack of libraries" issue, but I'm pretty lost when it comes to Bluetooth.  ::)

Can I get some basic stuff that I can try to get Bluetooth recognised?

Offline Mark Greaves (PCNetSpec)

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Re: External audio output Mint 17.1
« Reply #1 on: January 26, 2015, 10:07:44 am »
Is 17.1 still based on 14.04 ?

Is pulseaudio-module-bluetooth installed ?

Does it detect ANY bluetooth devices that are set as discoverable ?
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Offline chemicalfan

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Re: External audio output Mint 17.1
« Reply #2 on: January 26, 2015, 10:54:40 am »
Mint 17.1 is based on 14.04.1

I'll have to check that tonight (I assume I install it if it's not). Is there associated config that needs doing with that?

It doesn't detect any Bluetooth devices at all (according to the GUI), I don't even get as far attempting discovery (it's like it's hard/soft blocked, but I assume that doesn't exist with Bluetooth). There is no Bluetooth key/switch on the laptop

Offline Mark Greaves (PCNetSpec)

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Re: External audio output Mint 17.1
« Reply #3 on: January 26, 2015, 11:23:04 am »
Could be driver then .. what's the output from:
Code: [Select]
rfkill list
and:
Code: [Select]
hcitool dev
and:
Code: [Select]
hcitool scan
and:
Code: [Select]
lsusb | grep -i blue
and/or:
Code: [Select]
lspci -vnn | grep -i blue
or maybe:
Code: [Select]
dmesg | grep -i blue
and can you post the output from:
Code: [Select]
lsmod
for good measure :)
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Offline chemicalfan

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Re: External audio output Mint 17.1
« Reply #4 on: January 26, 2015, 11:37:35 am »
Will do tonight, thanks Mark
(might even play with Mint's new pastebin function!)

Offline chemicalfan

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Re: External audio output Mint 17.1
« Reply #5 on: January 26, 2015, 05:50:02 pm »
Ok, pastebin is here - http://paste.linuxmint.com/view/68x1

So dmesg sees Bluetooth, and the module is loaded, but nothing else sees it?!

Edit: pulseaudio-module-bluetooth is installed, for reference

Edit 2: Kernel version is 3.16.0-25-generic, in case that's relevant
« Last Edit: January 26, 2015, 06:04:42 pm by chemicalfan »

Offline Mark Greaves (PCNetSpec)

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Re: External audio output Mint 17.1
« Reply #6 on: January 26, 2015, 06:10:42 pm »
Are you fully updated ?

what's the output from
Code: [Select]
lsusb
and
Code: [Select]
lspci
and does anything happen if you load either the hc_vhci and/or hci_uart drivers:
Code: [Select]
sudo modprobe hci_vhci
Code: [Select]
sudo modprobe hci_uart
ie. does:
Code: [Select]
hcitool dev
list a bluetooth device after they are loaded ?
« Last Edit: January 26, 2015, 06:12:24 pm by Mark Greaves (PCNetSpec) »
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Offline chemicalfan

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Re: External audio output Mint 17.1
« Reply #7 on: January 26, 2015, 06:16:40 pm »
No change after those commands, new pastebin below:
http://paste.linuxmint.com/view/qdxk

I'm going to reboot into Windows to see if I can find more info about the Bluetooth on this thing

Offline Mark Greaves (PCNetSpec)

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Re: External audio output Mint 17.1
« Reply #8 on: January 26, 2015, 06:17:55 pm »
There's nothing at that pastebin address  :o

If it's not listed by lsusb or lspci, see if you can dig out the bluetooth adapters vendor:product ID string from the Windows "Device Manager".

Is this a laptop .. if so - make/model ?
if not, do you know the motherboard make/model ?

As the bluetooth adapter is *usually* part of the wireless adapter, can you also post the output from:
Code: [Select]
sudo lshw -C network
and
Code: [Select]
lspci -vnn | grep -i net
« Last Edit: January 26, 2015, 06:41:29 pm by Mark Greaves (PCNetSpec) »
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Offline chemicalfan

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Re: External audio output Mint 17.1
« Reply #9 on: January 26, 2015, 07:14:20 pm »
Lol, what a prat - new link http://paste.linuxmint.com/view/iadt

Couldn't find it under Windows either now  >:(
Can't even find the Bluetooth section in Control Panel, something weird is going on. It's an Acer Aspire 5755G (i5-2450M, 4Gb model)

It's not listed under lshw or lspci, just the LAN & Wifi adaptors. Seems like a bit of a dead end unless you've got a better idea?

Offline Mark Greaves (PCNetSpec)

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Re: External audio output Mint 17.1
« Reply #10 on: January 26, 2015, 07:48:21 pm »
Can you pastebin the full output from:
Code: [Select]
sudo lshw

Are you 100% sure bluetooth worked in Windows ? .. Acer have a habit of not always including a bluetooth adapter, even where there may be a bluetooth hardware switch.

Are you sure bluetooth isn't disabled somewhere (BIOS / hardware switch / key combo) ?
« Last Edit: January 26, 2015, 08:15:57 pm by Mark Greaves (PCNetSpec) »
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Offline chemicalfan

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Re: External audio output Mint 17.1
« Reply #11 on: January 26, 2015, 10:48:34 pm »
It's here - http://paste.linuxmint.com/view/gyfp

I can't be 100% sure I've ever had Bluetooth working on here, but there are Windows drivers for the Acer Aspire 5755G on their website for 2 Bluetooth adaptors (I've tried both to no avail). I've got a bluetooth folder, with received files in it, but I may well have copied them on from somewhere else. Damn my memory!

I think we've had a good stab at this, I guess I'll have to settle for a good old 3.5mm cable. Shame it's come to that in 2015, but I guess that's what you get for buying a budget laptop  :(

Offline Mark Greaves (PCNetSpec)

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Re: External audio output Mint 17.1
« Reply #12 on: January 26, 2015, 11:13:20 pm »
Yeah they did that laptop with
a) a Broadcom adapter
b) an Atheros adapter
c) no bluetooth adapter

If the Windows device manager doesn't list anything, you probably have the one without a bluetooth adapter fitted ..
(I'm *pretty sure* they used an Atheros AR9485WB-EG wireless/bluetooth adapter when they had bluetooth .. but yours has the Atheros AR9287)

You could always get a USB bluetooth adapter or buy any Half mini PCIe wireless/bluetooth adapter and fit it internally.
« Last Edit: January 26, 2015, 11:57:41 pm by Mark Greaves (PCNetSpec) »
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Offline chemicalfan

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Re: External audio output Mint 17.1
« Reply #13 on: January 27, 2015, 01:26:28 pm »
Thanks Mark, confirmed my suspicions (I couldn't derive the conclusion from the data I was looking at)
I think I'll look towards one of the minature USB ones (like the kind you get with wireless mice), how can I be sure to get a Linux compatible one. More than that though - do you think there would be *noticeable* lag between picture and sound, if I fired the sound via Bluetooth rather than 3.5mm audio cable?

Offline Mark Greaves (PCNetSpec)

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Re: External audio output Mint 17.1
« Reply #14 on: January 27, 2015, 06:34:11 pm »
Bluetooth audio was perfectly in sync with video in VLC for my sons bluetooth (A2DP) headphones

How about this:
http://www.amazon.co.uk/greymobiles-Bluetooth-Compatible-Wireless-Transfer/dp/B0013BC5EO/ref=cm_cr_pr_product_top
2 comments say it works in Linux/Ubuntu .. even though some people had problems with it under Vista :)

Supports A2DP (bluetooth audio) .. or so it says.

And at only £2.97 with free UK postage not a killer if it doesn't work :)
« Last Edit: January 27, 2015, 06:36:42 pm by Mark Greaves (PCNetSpec) »
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