I'm experiencing this bug as well. Can anyone spot a problem with this
configuration?
Linux 14.04LTS clean install
$ uname -srm
Linux 3.13.0-46-generic x86_64
$ grep -Rn radeon.audio /etc/default/grub
11:GRUB_CMDLINE_LINUX_DEFAULT="quiet splash radeon.audio=1"
$ xrandr -q
Screen 0: minimum 320 x 200, current 5200 x 2130, maximum 16384 x 16384
DisplayPort-0 connected primary 1600x900+80+1050 (normal left inverted right x
axis y axis) 443mm x 249mm
1600x900 60.0*+
1280x1024 75.0 60.0
1280x960 60.0
1280x800 59.8
1152x864 75.0
1280x720 60.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 66.7 60.0
720x400 70.1
DisplayPort-1 connected 1600x900+1680+1050 (normal left inverted right x axis y
axis) 443mm x 249mm
1600x900 60.0*+
1280x1024 75.0 60.0
1280x960 60.0
1280x800 59.8
1152x864 75.0
1280x720 60.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 66.7 60.0
720x400 70.1
DisplayPort-2 connected 1680x1050+0+0 (normal left inverted right x axis y
axis) 473mm x 296mm
1680x1050 59.9*+
1400x1050 74.9
1280x1024 75.0
1440x900 75.0 59.9
1152x864 75.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 66.7 60.0
720x400 70.1
DisplayPort-3 connected 1680x1050+1680+0 (normal left inverted right x axis y
axis) 473mm x 296mm
1680x1050 59.9*+
1400x1050 74.9
1280x1024 75.0
1440x900 75.0 59.9
1152x864 75.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 66.7 60.0
720x400 70.1
DisplayPort-4 connected 1920x1080+3280+1050 (normal left inverted right x axis
y axis) 1600mm x 900mm
1920x1080 60.0*+ 50.0 59.9 24.0 24.0
1920x1080i 60.1 50.0 60.0
1280x720 60.0 50.0 59.9
1440x576 50.0
1440x576i 50.1
1440x480 60.0 59.9
1440x480i 60.1 60.1
720x576 50.0
720x480 60.0 59.9
640x480 60.0 59.9
DisplayPort-5 disconnected (normal left inverted right x axis y axis)
$ sudo lspci -vk | grep -A15 VGA
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cape
Verde PRO [FirePro W600] (prog-if 00 [VGA controller])
Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Device 2b1e
Flags: bus master, fast devsel, latency 0, IRQ 67
Memory at c0000000 (64-bit, prefetchable) [size=256M]
Memory at d4000000 (64-bit, non-prefetchable) [size=256K]
I/O ports at 2000 [size=256]
[virtual] Expansion ROM at d4060000 [disabled] [size=128K]
Capabilities: [48] Vendor Specific Information: Len=08 <?>
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Legacy Endpoint, MSI 00
Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010
<?>
Capabilities: [150] Advanced Error Reporting
Capabilities: [270] #19
Kernel driver in use: radeon
$ lspci -v | grep Audio
03:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cape
Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series]
Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde/Pitcairn
HDMI Audio [Radeon HD 7700/7800 Series]
11:01.0 Multimedia audio controller: C-Media Electronics Inc CMI8738/CMI8768
PCI Audio (rev 10)
Subsystem: C-Media Electronics Inc CMI8738/C3DX PCI Audio Device
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: HDMI [HDA ATI HDMI], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: HDMI [HDA ATI HDMI], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: HDMI [HDA ATI HDMI], device 9: HDMI 3 [HDMI 3]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 0: HDMI [HDA ATI HDMI], device 10: HDMI 4 [HDMI 4]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: HDMI [HDA ATI HDMI], device 11: HDMI 5 [HDMI 5]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: CMI8768 [C-Media CMI8768], device 0: CMI8738-MC8 [C-Media PCI DAC/ADC]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: CMI8768 [C-Media CMI8768], device 1: CMI8738-MC8 [C-Media PCI 2nd DAC]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: CMI8768 [C-Media CMI8768], device 2: CMI8738-MC8 [C-Media PCI IEC958]
Subdevices: 0/1
Subdevice #0: subdevice #0
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https://bugs.launchpad.net/bugs/864735
Title:
[ATI HDMI] HDMI Audio Disabled by Default (since oneiric)
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