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Ip=[204.128.141.24]; Helo=[owa.infinera.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY1PR10MB0378 X-Mailman-Approved-At: Wed, 23 Aug 2017 08:01:47 +0200 Subject: [alsa-devel] usb 1-2: 1:1: cannot set freq 44100 to ep 0x81 and potential fix X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP I have two USB headsets (Logitech Inc Logitech Stereo H650e and Jabra Jabra UC VOICE 550a) who both causes lots of: usb 1-2: 1:1: cannot set freq 44100 to ep 0x81 errors when using them for pidgin audio chats. The actual freq varies though. I found that adding a small delay here: diff -u sound/usb/clock.c.org sound/usb/clock.c it seems one cannot do these settings too fast Ant better idea for a fix? kernel 4.9.44 Jocke PS. When starting a chat with pidgin-sipe, I see the same sample rate freq setting twice, not sure where that comes from. --- sound/usb/clock.c.org 2017-08-18 14:38:05.597977669 +0200 +++ sound/usb/clock.c 2017-08-18 14:20:14.653661513 +0200 @@ -304,6 +304,7 @@ iface, fmt->altsetting, rate, ep); return err; } + msleep(1); /* Don't check the sample rate for devices which we know don't * support reading */