XPost: linux.debian.kernel
Control: tag -1 moreinfo
On Sun, 2025-06-29 at 19:13 +0100, Jamie Forth wrote:
[...]
There are no differences in default ALSA parameters running under 6.1
or 6.12 kernels.
$ cat /proc/asound/USB/pcm0c/sub0/sw_params
You mean "hw_params", right?
access: MMAP_INTERLEAVED
format: S32_LE
subformat: STD
channels: 10
rate: 48000 (48000/1)
period_size: 128
buffer_size: 32768
$ cat /proc/asound/USB/pcm0c/sub0/sw_params
tstamp_mode: ENABLE
period_step: 1
avail_min: 128
start_threshold: 9223372036854775807
stop_threshold: 32768
silence_threshold: 0
silence_size: 0
boundary: 4611686018427387904
But these are for the capture side (pcm0c), whereas I thought the
problem was with playback (pcm0p)?
[...]
The additional IRQs listed under the 6.12 kernel don't appear to
exist, only irq/155-xhci_hcd in this case.
They exist and have been allocated but are not used. The XHCI PCI
driver can currently allocate multiple IRQs but only installs an IRQ
handler for the first one. This is a bit strange but should not cause a problem because it also doesn't configure the hardware to use the
additional IRQs.
[...]
** Loaded modules:
[...]
nvidia_drm(POE)
nvidia_modeset(POE)
nvidia(POE)
[...]
I see some reports that the Nvidia proprietary drivers can cause latency
spikes that affect audio. Can you please test whether this problem
still occurs when using the nouveau driver instead?
Ben.
--
Ben Hutchings
73.46% of all statistics are made up.
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