Re: [Alsa-user] Audiotrak Maya 44 USB Soundcard
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From: Lee R. <rlr...@jo...> - 2006-03-13 19:02:43
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On Mon, 2006-03-13 at 19:50 +0100, Hiram Abiff wrote: > > I checkveed dmesg, this message appears after each aplay's > > unsuccesful attempt: > > > > cannot submit datapipe for urb 0, err = -38 > > > > What is this "urb 0"? > > I found this in the LAU archive from , pertaining > to this error message: > > "> > > ALSA: could not start playback (Broken pipe) > > > > kernel: cannot submit datapipe for urb 0, err = -28 > > 28 = ENOSPC: "This request would overcommit the usb bandwidth reserved > for periodic transfers (interrupt, isochronous)." > > This doesn't seem to be quite correct for two 16-bit stereo streams. > Which kernel and host controller driver are you using? > Probably you should just deactivate bandwith checking in the kernel > config. " > > This happened after Clemens advised Chris Eckert to try loading > the snd-usb-audio with "nrpacks=1" and setting the period in jack > to 3. But, I didn;t pass this argument with the snd-usb-audio > and didn't set jack to use 3 periods. Would deactivating > bandwidht checking work for me too, then? Error -38 is not the same as error -28. If you have bandwidth checking enabled then certainly disable it (it's well known that it's broken). Is this device connected through a hub? Lee |