HDMI Audio screwed up w/ recent kernels
cloos at jhcloos.com
Fri Dec 23 00:49:57 UTC 2016
I haven't paid as close attention to Xorg issues sine the stroke last
year, and I hadn't needed to reboot the box in the living room in
When I did need to, I found that hdmi audio was unlistenable. It
sounded like it was mixed witht white noise.
If I boot vmlinuz-3.19.0 is works fine. I had compiled 4.1.0 and 4.5.0,
as well as its current default kernel, 4.9.0 (all from Linus' git). All
of those 4. kernels show the crappy audio.
In 4.9 I then tried switching to amdgpu. That did not help.
The box has a Kaveri apu (ChipID 0x1313).
Firmware is from linux-firmware.git and is compiled into the kernel via
With radeon the kernel command line has: radeon.modeset=1 radeon.audio=1
With amdgpu I switched to: amdgpu.audio=1 amdgpu.exp_hw_support=1
Any thoughs on where to look?
I find it hard to believe that a bug like this could persist for so
James Cloos <cloos at jhcloos.com> OpenPGP: 0x997A9F17ED7DAEA6
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