08-16-2018, 08:39 AM | #1 |
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ALSA: error setting input device period size
Hi,
On an HP Spectre with hw:broadwellrt286 built in sound I can't get ALSA drivers working. All is working in PULSE, but in ALSA whatever number of periods or sample rate I always get ALSA: error setting input device period size error
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08-17-2018, 08:08 AM | #2 |
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Is Pulseaudio in use when this happens? Possibly helpful: https://wiki.archlinux.org/index.php/PulseAudio#Running
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08-17-2018, 08:27 AM | #3 |
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I doubt this has anything to do with PA.
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08-19-2018, 04:23 AM | #4 |
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I don't think PA is involved.
Does this error mean my friend will never get ALSA in Reaper working, or are we waiting for a new Kernel or a new version of Reaper?
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08-19-2018, 04:51 PM | #5 |
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Thing is, if pulseaudio is working, then alsa is working. I think you well know already that pulseaudio is a layer on top of alsa, where alsa is a major dependency.
Has your friend tried running any other applications that support alsa (so as to get an idea if it is a problem between alsa/reaper). Also, have you tried killing the pulseaudio server to see if alsa works with reaper afterward?
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08-19-2018, 06:33 PM | #6 |
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08-20-2018, 01:15 AM | #7 |
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You could try to run "cat /proc/asound/card0/pcm0p/sub0/hw_params" while pulse is playing back to see what parameters it uses. Change the above command to reflect the actual device in use.
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08-20-2018, 04:35 AM | #8 |
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OK, I can get ALSA to work with 1024 blocksize (no lower)... but Pulse Audio can go as low as it wants and still works fine?
Something strange going on? (Jack, I get cat: /proc/asound/card0/pcm0p/sub0/hw_params: No such file or directory)
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08-20-2018, 05:32 AM | #9 |
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You have to change that command to reflect what is actually used.
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08-20-2018, 06:43 AM | #10 |
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REAPER's PulseAudio setting or the pulseaudio core setting? PulseAudio is a relatively high-latency output system, the blocksize used in REAPER is only used internally, output you probably still will always have 50ms+ of latency...
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08-21-2018, 02:49 AM | #11 | |
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Quote:
It would be much more informative if you gave different labels to Blocksize in ALSA and PulseAudio as it seems they are refereeing to different things? ALSA = Blocksize / Actual Blocksize / ? PulseAudio = Relative Blocksize / Internal Blocksize / ? It might help prevent future confusion and support requests. Cheers!
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