UserAgent: Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.117 Safari/537.36

Example URL:
http://hackgreensdr.org:8901/  http://grimsbysdr.ddns.net:8073/  and others.   http://websdr.ewi.utwente.nl:8901/ works fine.

Steps to reproduce the problem:
go to url   http://hackgreensdr.org:8901/ 
2. http://grimsbysdr.ddns.net:8073/
3. 

What is the expected behavior?
Sound, noise or speech.

What went wrong?
No sound.

Works fine in Firefox ESR, Google Chrome and Vivaldi here and other computers.

Did this work before? Yes All version before latest update.

Is it a problem with Flash or HTML5? HTML5

Does this work in other browsers? Yes

Chrome version: 66.0.3359.117  Channel: stable
OS Version:  debilian 4.9.0-6-686-pae #1 SMP Debian 4.9.82-1+deb9u3 (2018-03-02) i686 GNU/Linux
Flash Version: 

Contents of chrome://gpu: 

Graphics Feature Status
Canvas: Software only. Hardware acceleration disabled
CheckerImaging: Disabled
Flash: Software only. Hardware acceleration disabled
Flash Stage3D: Software only. Hardware acceleration disabled
Flash Stage3D Baseline profile: Software only. Hardware acceleration disabled
Compositing: Software only. Hardware acceleration disabled
Multiple Raster Threads: Disabled
Native GpuMemoryBuffers: Software only. Hardware acceleration disabled
Rasterization: Software only. Hardware acceleration disabled
Surface Synchronization: Disabled
Video Decode: Software only. Hardware acceleration disabled
WebGL: Disabled
WebGL2: Disabled
Problems Detected
GPU process was unable to boot: GPU process crashed too many times with SwiftShader.
Disabled Features: all
Raster is using a single thread.
Disabled Features: multiple_raster_threads
Native GpuMemoryBuffers have been disabled, either via about:flags or command line.
Disabled Features: native_gpu_memory_buffers
Checker-imaging has been disabled via finch trial or the command line.
Disabled Features: checker_imaging
Version Information
Data exported	2018-04-29T16:07:01.319Z
Chrome version	Chrome/66.0.3359.117
Operating system	Linux 4.9.0-6-686-pae
Software rendering list URL	https://chromium.googlesource.com/chromium/src/+/1634af79e3bf0d6f0178a5fdb8829b059ead4b26/gpu/config/software_rendering_list.json
Driver bug list URL	https://chromium.googlesource.com/chromium/src/+/1634af79e3bf0d6f0178a5fdb8829b059ead4b26/gpu/config/gpu_driver_bug_list.json
ANGLE commit id	unknown hash
2D graphics backend	Skia/66 773868fdade5f9f0e7697e6d09c9bd80aaa9b402-
Command Line	/usr/lib/chromium/chromium --show-component-extension-options --ignore-gpu-blacklist --no-default-browser-check --disable-pings --media-router=0 --enable-remote-extensions --flag-switches-begin --flag-switches-end
Driver Information
Initialization time	0
In-process GPU	true
Passthrough Command Decoder	false
Direct Composition	false
Supports overlays	false
Sandboxed	false
GPU0	VENDOR = 0x0000, DEVICE= 0x0000
Optimus	false
Optimus	false
AMD switchable	false
Driver vendor	
Driver version	
Driver date	
Pixel shader version	
Vertex shader version	
Max. MSAA samples	
Machine model name	
Machine model version	
GL_VENDOR	
GL_RENDERER	
GL_VERSION	
GL_EXTENSIONS	
Disabled Extensions	
Disabled WebGL Extensions	
Window system binding vendor	
Window system binding version	
Window system binding extensions	
Window manager	Openbox
XDG_CURRENT_DESKTOP	LXDE
GDMSESSION	LXDE
Compositing manager	No
Direct rendering	Yes
Reset notification strategy	0x0000
GPU process crash count	0
System visual ID	0
RGBA visual ID	0
Compositor Information
Tile Update Mode	One-copy
Partial Raster	Enabled
GpuMemoryBuffers Status
ATC	Software only
ATCIA	Software only
DXT1	Software only
DXT5	Software only
ETC1	Software only
R_8	Software only
R_16	Software only
RG_88	Software only
BGR_565	Software only
RGBA_4444	Software only
RGBX_8888	Software only
RGBA_8888	Software only
BGRX_8888	Software only
BGRX_1010102	Software only
RGBX_1010102	Software only
BGRA_8888	Software only
RGBA_F16	Software only
YVU_420	Software only
YUV_420_BIPLANAR	Software only
UYVY_422	Software only
Display(s) Information
Info	Display[7515990809278210] bounds=0,0 1440x900, workarea=0,0 1440x900, scale=1, external
Color space information	{primaries:INVALID, transfer:INVALID, matrix:INVALID, range:INVALID}
Bits per color component	8
Bits per pixel	24
Video Acceleration Information
Log Messages
[7684:7684:0429/174904.302469:ERROR:gl_implementation.cc(292)] : Failed to load /usr/lib/chromium/swiftshader/libGLESv2.so: /usr/lib/chromium/swiftshader/libGLESv2.so: ne mogu otvoriti datoteku dijeljenog objekta: Nema takve datoteke ili direktorija
GpuProcessHostUIShim: The GPU process exited with code 1024.