Public bug reported:
I've looked around but cannot figure out where this problem originates,
but if I go into Ubuntu Settings -> Sound, and set both Output Device
and Input Device to my USB Audio device, it starts showing a level
meter, recording at 44100 Hz. If I then press the Test button for the
Output Device, it plays at 48000 Hz:
~> cat /proc/asound/card1/pcm0p/sub0/hw_params
access: MMAP_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 48000 (48000/1)
period_size: 44100
buffer_size: 88200
~> cat /proc/asound/card1/pcm0c/sub0/hw_params
access: MMAP_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 44100
buffer_size: 88200
My hardware cannot handle different input and output sample rates at the
same time. It should pick one or the other and use it for both. macOS
always uses the same sample rate for the entire device, for instance.
** Affects: pulseaudio (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1981761
Title:
Settings -> Sound sets conflicting sample rates for Playback and
Capture
Status in pulseaudio package in Ubuntu:
New
Bug description:
I've looked around but cannot figure out where this problem
originates, but if I go into Ubuntu Settings -> Sound, and set both
Output Device and Input Device to my USB Audio device, it starts
showing a level meter, recording at 44100 Hz. If I then press the
Test button for the Output Device, it plays at 48000 Hz:
~> cat /proc/asound/card1/pcm0p/sub0/hw_params
access: MMAP_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 48000 (48000/1)
period_size: 44100
buffer_size: 88200
~> cat /proc/asound/card1/pcm0c/sub0/hw_params
access: MMAP_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 44100
buffer_size: 88200
My hardware cannot handle different input and output sample rates at
the same time. It should pick one or the other and use it for both.
macOS always uses the same sample rate for the entire device, for
instance.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1981761/+subscriptions
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