Bluetooth Failed to connect: org.bluez.Error.Failed

i92guboj

Hi!

So, bluetooth doesn't work, quite strange, isn't it?

I have used it a couple times in all my lifetime, sucessfully, that is. I was feeling adventurous and tried it again, but, while I've been trying for some days now, I haven't managed to get past this nice error message.

So, to sum up, I have sucessfully enabled all the kernel stuff, and it seems to work, my adapter is detected and seems to be working:

Logicien · Posted: Thu Apr 06, 2017 5:32 pm Post subject:

Broadcom devices may need firmware files.

Do you have a Dbus session started?

Try to connect from your cellular.

Cellulars have audio capabilities, Bluez may need Pulseaudio
even if you don't use audio Bluetooth.
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i92guboj · Posted: Thu Apr 06, 2017 5:48 pm Post subject:

i92guboj · Posted: Thu Apr 06, 2017 6:04 pm Post subject:

Also, I am asuming that being unable to connect is a bad thing. I have no idea if that's true though.

My only concern is being able to send files one way or the other. That's all I want. I don't need modem capabilities, I don't need to play audio using bluetooth or something like that. Just send a couple photos.

I use my phone when at work to connect to the internet from my laptop, using a wifi zone, and passing photos using that is hurting my data plan badly. I could be using bluetooth for that purpose instead and my life would be much easier. But, as always, getting bluetooth to work is demonstrating to be a daunting task.

i92guboj · Posted: Thu Apr 06, 2017 9:28 pm Post subject:

After running circles for several hours, I am able to send files TO the phone. However, I can't still send files FROM the phone TO the laptop, which is precisaly what I need.

I recompiled several packages with USE=bluetooth and did a few other things though I am not sure they are entirely relevant. I have to double check everything. Also, obexftp doesn't automatically error when trying to connect, though it doesn't work anyway, but it says something more now:

i92guboj · Posted: Thu Apr 06, 2017 9:37 pm Post subject:

Also, when I try to send a file from my phone, right now, the blue tray icon shows activity (the white B logo inside of it turns green). I guess that means that it's, at least, trying to do something, but not sure exactly what.

When that happens, in less than one second, I can see this in the terminal from where I launched blueman:

i92guboj · Posted: Fri Apr 07, 2017 10:30 am Post subject:

Ok.

I just sent my first file using bluetooth from my phone to my laptop, with success.

Things I did (so you can try).

I added these into my kernel and recompiled: CONFIG_BRIDGE, CONFIG_BRIDGE_IGMP_SNOOPING, CONFIG_BRIDGE_VLAN_FILTERING, CONFIG_VLAN_8021Q, CONFIG_VLAN_8021Q_GVRP and CONFIG_VLAN_8021Q_MVRP
I emerged bluez-firmware, and compiled /lib/firmware/BCM2033-FW.bin into my kernel image
I unmasked, keyworded and emerged the latest blueman alpha, and the latest unstable bluez
I emerged obexftp
I also added the "network" use flag to blueman, this is the last thing I did along with the kernel bridge stuff

Probably I did many more things I don't remember right now.

I will try to revert some of these and see if the thing continue working or breaks. In any case, if you stump into this remember that this thread is only about getting the ability to transfer files to and from my phone, nothing else. I am not interested in bt audio nor anything else.

EDIT: I removed the firmware from the kernel and unmerged it, it works, so I assume its out of the equation. I recompiled the kernel taking out all of the options I added above, except CONFIG_BRIDGE. That also worked fine.

As for obexftp, I unmerged it and I could still send files, but not receive them. So, I need it to receive files it seems. Any indication about that would have saved me many hours, but taking into account that's such a basic functionality, if I am right and you need that to receive files, the package should be a DEPEND for bluez or blueman.

After I am done with the rest of my checks, I might open a bug about that, if none has been reported already.

2nd EDIT

I toyed a bit more with the obexftp thing. It's not needed, I was wrong. It seems that, for some reason, when the little "B" logo is white, the first time I send a file it turns green and the transfer fails. Once it's green, I can send files and it will work. I have no idea why. It seems that it needs to be already connected or otherwise the transfer will immediately timeout and fail.

That confused me, and I thought that obexftp had something to do with that. But it seems that's not true.

3rd EDIT

I tried reverting to stable bluez and non-alpha blueman. Blueman could be reverted to ~amd64 without trouble. However, downgrading bluez broke it again. 5.44 works, 5.43-r1 doesn't. I'll truly have to set a watch on this, just next to my watch on samba, and double check my system updates not to touch these unless I have some spare time to fix stuff that will break.

I'll check a couple more things and then post here as a reminder on which things did the magic, for whomever stumps into this and for my own future reference.

Jaglover · Posted: Fri Apr 07, 2017 11:43 am Post subject:

Thanks for sharing, I have had issues with BT, too. Currently only about every third attempt to transfer a file succeeds. The weird thing is only my Motorola phone has problems, Asus tablet transfers files no problem. Go figure.
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i92guboj · Posted: Fri Apr 07, 2017 1:02 pm Post subject:

Jaglover · Posted: Fri Apr 07, 2017 2:29 pm Post subject:

I just checked my kernel and I have none of those options enabled. I think I have to study what they are for.
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i92guboj · Posted: Fri Apr 07, 2017 4:28 pm Post subject:

If I had to guess I'd say they are related to that ppp-over-bt thing people use.

But I have no idea.

When I get some spare time I'll do some more trimming down of this mess, and they will probably probe to be of no use for my concrete purpose.

All in all, I suspect that bluez version was the issue here. Maybe the "network" use flag had something to do as well. I'll let you all know once I get the time to check.