UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.104 Safari/537.36

Example URL:
https://hangouts.google.com

Steps to reproduce the problem:
1. start chromium without mic
2. plugin mic
3. no site in chromium sees mic

What is the expected behavior?
i want to use my mic when i plug it in

What went wrong?
my mic is not detcted by chromium when plugged in.
other apps are able to see and use it

Did this work before? N/A 

Is it a problem with Flash or HTML5? HTML5

Does this work in other browsers? N/A

Chrome version: 59.0.3071.104  Channel: n/a
OS Version: 
Flash Version: Shockwave Flash 25.0 r0

Contents of chrome://gpu: 
Graphics Feature Status
Canvas: Software only, hardware acceleration unavailable
Flash: Software only, hardware acceleration unavailable
Flash Stage3D: Software only, hardware acceleration unavailable
Flash Stage3D Baseline profile: Software only, hardware acceleration unavailable
Compositing: Software only, hardware acceleration unavailable
Multiple Raster Threads: Enabled
Native GpuMemoryBuffers: Software only. Hardware acceleration disabled
Rasterization: Software only, hardware acceleration unavailable
Video Decode: Software only, hardware acceleration unavailable
Video Encode: Software only, hardware acceleration unavailable
WebGL: Hardware accelerated but at reduced performance
WebGL2: Unavailable
Driver Bug Workarounds
adjust_src_dst_region_for_blitframebuffer
clear_uniforms_before_first_program_use
decode_encode_srgb_for_generatemipmap
disable_framebuffer_cmaa
dont_remove_invariant_for_fragment_input
force_cube_map_positive_x_allocation
init_texture_max_anisotropy
regenerate_struct_names
remove_invariant_and_centroid_for_essl3
scalarize_vec_and_mat_constructor_args
disable_software_to_accelerated_canvas_upgrade
Problems Detected
ATI/AMD cards with older drivers in Linux are crash-prone: 71381, 76428, 73910, 101225, 136240, 357314
Disabled Features: flash_stage3d, gpu_compositing, panel_fitting, flash3d, gpu_rasterization, accelerated_2d_canvas, accelerated_video_decode, webgl2, accelerated_webgl, flash_stage3d_baseline, accelerated_video_encode
Accelerated video decode is unavailable on Linux: 137247
Disabled Features: accelerated_video_decode
Accelerated video encode is unavailable on Linux
Disabled Features: accelerated_video_encode
Clear uniforms before first program use on all platforms: 124764, 349137
Applied Workarounds: clear_uniforms_before_first_program_use
Linux AMD drivers incorrectly return initial value of 1 for TEXTURE_MAX_ANISOTROPY: 348237
Applied Workarounds: init_texture_max_anisotropy
Always rewrite vec/mat constructors to be consistent: 398694
Applied Workarounds: scalarize_vec_and_mat_constructor_args
Linux AMD drivers handle struct scopes incorrectly: 403957
Applied Workarounds: regenerate_struct_names
Linux ATI drivers crash on binding incomplete cube map texture to FBO: 518889
Applied Workarounds: force_cube_map_positive_x_allocation
Limited enabling of Chromium GL_INTEL_framebuffer_CMAA: 535198
Applied Workarounds: disable_framebuffer_cmaa
adjust src/dst region if blitting pixels outside read framebuffer on Linux AMD: 664740
Applied Workarounds: adjust_src_dst_region_for_blitframebuffer
AMD drivers in Linux require invariant qualifier to match between vertex and fragment shaders: 659326, 639760
Applied Workarounds: remove_invariant_and_centroid_for_essl3, dont_remove_invariant_for_fragment_input
Disable KHR_blend_equation_advanced until cc shaders are updated: 661715
Decode and Encode before generateMipmap for srgb format textures on Linux AMD: 634519
Applied Workarounds: decode_encode_srgb_for_generatemipmap
Software to Accelerated canvas update breaks Linux AMD: 710029
Applied Workarounds: disable_software_to_accelerated_canvas_upgrade
Native GpuMemoryBuffers have been disabled, either via about:flags or command line.
Disabled Features: native_gpu_memory_buffers
Version Information
Data exported	30.6.2017, 21:06:57
Chrome version	Chrome/59.0.3071.104
Operating system	Linux 4.9.16-gentoo
Software rendering list version	13.8
Driver bug list version	10.102
ANGLE commit id	unknown hash
2D graphics backend	Skia/59 ef6f9c65527412ec4057ea0551f2e051beb94d32
Command Line Args	--extra-plugin-dir=/usr/lib64/nsbrowser/plugins --disk-cache-dir=/tmp --ppapi-flash-path=/usr/lib64/chromium/PepperFlash/libpepflashplayer.so --ppapi-flash-version=25.0.0.171 --flag-switches-begin --flag-switches-end
Driver Information
Initialization time	0
In-process GPU	true
Passthrough Command Decoder	false
Supports overlays	false
Sandboxed	false
GPU0	VENDOR = 0x1002, DEVICE= 0x67b1
GPU1	VENDOR = 0x8086, DEVICE= 0x1912
Optimus	false
Optimus	false
AMD switchable	true
Driver vendor	Google Inc.
Driver version	3.3.0.2
Driver date	2017/04/07
Pixel shader version	3.0
Vertex shader version	3.0
Max. MSAA samples	4
Machine model name	
Machine model version	
GL_VENDOR	Google Inc.
GL_RENDERER	Google SwiftShader
GL_VERSION	OpenGL ES 2.0 SwiftShader
GL_EXTENSIONS	
Disabled Extensions	GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent
Window system binding vendor	
Window system binding version	
Window system binding extensions	
Window manager	KWin
XDG_CURRENT_DESKTOP	KDE
Compositing manager	Yes
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
RG_88	Software only
BGR_565	Software only
RGBA_4444	Software only
RGBX_8888	Software only
RGBA_8888	Software only
BGRX_8888	Software only
BGRA_8888	Software only
RGBA_F16	Software only
YVU_420	Software only
YUV_420_BIPLANAR	Software only
UYVY_422	Software only
Log Messages
[15036:15036:0630/210339.865025:ERROR:interface_registry.cc(209)] : Failed to locate a binder for interface: chrome::mojom::ResourceUsageReporter requested by: exposed by: via InterfaceProviderSpec "service_manager:connector".

hangouts is unusable for me under this circumstances