Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.kernel > #88284

Bug#1108496: linux-image-6.12.30+bpo-amd64: USB audio glitches: retire_capture_urb

Cross-posted to 2 groups.

Show all headers | View raw

[Multipart message — attachments visible in raw view] - view raw

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.

Back to linux.debian.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Bug#1108496: linux-image-6.12.30+bpo-amd64: USB audio glitches: retire_capture_urb Jamie Forth <jamieforth@gmail.com> - 2025-06-29 20:20 +0200
  Bug#1108496: linux-image-6.12.30+bpo-amd64: USB audio glitches: retire_capture_urb Ben Hutchings <ben@decadent.org.uk> - 2025-07-09 15:00 +0200
    Bug#1108496: linux-image-6.12.30+bpo-amd64: USB audio glitches: retire_capture_urb Jamie Forth <jamieforth@gmail.com> - 2025-07-19 19:40 +0200
  Processed: Re: Bug#1108496: linux-image-6.12.30+bpo-amd64: USB  audio glitches: retire_capture_urb "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-07-09 15:00 +0200
  Bug#1108496: linux-image-6.12.30+bpo-amd64: USB audio glitches: retire_capture_urb Jamie Forth <jamieforth@gmail.com> - 2025-08-02 04:50 +0200
    Bug#1108496: linux-image-6.12.30+bpo-amd64: USB audio glitches: retire_capture_urb Jamie Forth <jamieforth@gmail.com> - 2025-08-05 15:10 +0200
  Bug#1108496: 这3种食物千万别碰，因为它们会导致死亡 Quinn Monahan <quinnmonahan99@gmail.com> - 2025-09-17 12:00 +0200

csiph-web