Re: Problems with USB AudioEngine Speakers [Bluetooth]

On Sun, 2021-10-10 at 08:38 +0800, Ed Greshko wrote: > On 10/10/2021 07:48, Jonathan Ryshpan wrote: >> On Sat, 2021-10-09 at 06:40 +0800, Ed Greshko wrote: >>> What results do you get if you boot your system with the USB speakers disconnected and the connect them once the system is fully booted? >> I was listening to some audio when the sound stopped;  AudioEngine had disappeared from the list of output devices.  A log extract is attached  (Audio-Crash.txt). >> >> There may be a problem with the cable.  The speakers are attached to the computer with a USB extender cable, which may not give as good a connection as is needed.  So I moved things around and connected the speakers without the extender; we'll see if things get better.  A log extract is attached (Audio-Restore-ShortCable.txt). > > Oh, I never did have much luck with USB extender cables. FWIW, I don't use USB devices all that much.  Other than > dongles I only have an HDMI capture device hooked to USB. > > With speakers, I use Bluetooth.  I find them more versatile. I have changed the connection to Bluetooth, which worked well for a while, except that sound quality may be a little less good.  However the connection is still flaky: After plugging in another sound device via USB, Bluetooth disconnects from the speakers, producing the log message: Oct 10 08:14:28 amito bluetoothd[15557]: profiles/audio/avdtp.c:avdtp_connect_cb() connect to AC:A9:B4:00:06:2E: Connection refused (111) Does anyone know what this means?  The connection also drops fairly frequently for no apparent reason.  The only way to reconnect is to either remove and reinsert the Bluetooth adapter or to reboot the system. The Bluetooth adapter, an old Belkin USB dongle, produces this log message when recognized: Oct 09 22:01:10 amito udisksd[2157]: Mounted /dev/sr0 at /run/media/jonrysh/我的光碟 on behalf of uid 1000 Definitely made in China. I would like to try a different adapter(dongle). *Can anyone recommend one?* There are a lot of choices, and the ones recommended (for M$ Windows) may not be the best for Linux.