[Bug 86351] HDMI audio garbled output on Radeon R9 280X

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=86351

--- Comment #28 from Andy Furniss (adf.lists at gmail.com) ---
Yea, I fount that you need io load, I use mprime - but not the test that just
stresses cpu...

Of course using pulse, as most people do, avoids the bug as it uses sound
different from alsa.

TODO - try and get jack to recreate what pulse does.

This is alsa -

andy at andy-desktop:~$ cat /proc/asound/card1/pcm3p/sub0/hw_params 
access: RW_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 480
buffer_size: 11040

and pulse (well I didn't actually install pulse on my main LFS setup - but
tested with a ubuntu boot - so maybe there are other differences).

access: MMAP_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 8192
buffer_size: 16384

I never had any luck playing with period/buffer size so I assume (possibly
falsely) that the different access method is relevant.

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