Re: [alsa-devel] Distorted audio from microphone (Logitech C310)
On Mon, May 15, 2017 at 03:29:09PM +0200, Domker_ wrote:
My webcam Logitech C310 have a distored microphone audio on kernel 4.10.15-1 and 4.11.0-1. (on 4.9.27-1 and the older ones is fine). The distortion effect is as if I spoke very, very fast (like a damn Mickey Mouse)
I checked and the bug occurs on both computers I have. (with the same camera/different sound cards, hardware and different Linux distributions) The bug always occurs when running a system with a kernel newer than 4.9.x.
The camera has two internal microphones. Secound kernel 4.11.0-1 (x86_64) compiled from kernel.org!
(tested under Linux Arch and Linux Manjaro)
Hm, maybe the Linux sound developers can help out here (added to cc:)
On Tue, 16 May 2017 07:58:43 +0200, Greg KH wrote:
On Mon, May 15, 2017 at 03:29:09PM +0200, Domker_ wrote:
My webcam Logitech C310 have a distored microphone audio on kernel 4.10.15-1 and 4.11.0-1. (on 4.9.27-1 and the older ones is fine). The distortion effect is as if I spoke very, very fast (like a damn Mickey Mouse)
I checked and the bug occurs on both computers I have. (with the same camera/different sound cards, hardware and different Linux distributions) The bug always occurs when running a system with a kernel newer than 4.9.x.
The camera has two internal microphones. Secound kernel 4.11.0-1 (x86_64) compiled from kernel.org!
(tested under Linux Arch and Linux Manjaro)
Hm, maybe the Linux sound developers can help out here (added to cc:)
Through a quick look, there only a few commits between 4.9.27 and 4.10.15 regarding USB-audio. The suspicious one is
commit fd1a5059610cd3887f1050171a840ca864108730 ALSA: usb-audio: more tolerant packetsize
Could you try to revert this?
thanks,
Takashi
participants (2)
-
Greg KH -
Takashi Iwai