One more note. I didn't install real time kernel patches to my 2.6.16 kernel. Would not using the real time patches affect the bandwidth problem from this "cannot submit datapipe" error? I am able to arecord channels 1 & 2 or channels 3 & 4 but any command to get all 4 causes this weird error. Should I just give up on the Quattro? Thanks, Jim On 3/24/07, Jim Steed <jsteed@xxxxxxxxx> wrote:
More info from my arecord with MAudio Quattro problem... Checking dmesg I get an error that says cannot submit datapipe for urb 0, err = -28 I found through google that this means the USB bandwidth has been exceeded. I checked and CONFIG_USB_BANDWIDTH is not set in my kernel configuration. I tried rebuilding with it explicitly set to no and I still get the -28 error. Anyone have any recommendations for getting around this? Thanks, Jim On 3/23/07, Jim Steed <jsteed@xxxxxxxxx> wrote: > I'm trying to use all 4 input channels on a MAudio Quattro on Fedora > Core 5 running on a Playstation 3 (PPC build of the kernel with some > stuff stripped out). > > The final app will just use open() and read() to process the data > directly. In that application it looks like I get 2 copies of the > first 2 channels. I get Channel 0 replicated in Channel 2 with > exactly the same values, and Channel 1 replicated in Channel 3. > (Recording 16 bit at 44.1kHz) > > I followed the directions in > http://wiki.linuxquestions.org/wiki/M-Audio_Quattro to setup > .asoundrc. I am trying to debug using just arecord but I can't get it > to do anything > > arecord -r 44100 -c 4 -f s16_le -D q4 -d 5 test4.wav > > gives me > > arecord: xrun:1082: read/write error, state = PREPARED > > Any help would be appreciated. > > Thanks, > Jim Steed > > Here is the relevant part of /proc/bus/usb/devices: > > T: Bus=01 Lev=02 Prnt=02 Port=01 Cnt=02 Dev#= 4 Spd=12 MxCh= 0 > D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 > P: Vendor=0763 ProdID=2001 Rev= 1.05 > S: Manufacturer=M Audio > S: Product=USB Audio Quattro > C:* #Ifs=10 Cfg#= 1 Atr=40 MxPwr= 0mA > I: If#= 0 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio > I: If#= 1 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > I: If#= 1 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=03(O) Atr=09(Isoc) MxPS= 192 Ivl=1ms > I: If#= 2 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > I: If#= 2 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=85(I) Atr=0d(Isoc) MxPS= 192 Ivl=1ms > I: If#= 3 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio > I: If#= 4 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > I: If#= 4 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=03(O) Atr=09(Isoc) MxPS= 576 Ivl=1ms > I: If#= 4 Alt= 3 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=03(O) Atr=09(Isoc) MxPS= 288 Ivl=1ms > I: If#= 4 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=03(O) Atr=09(Isoc) MxPS= 192 Ivl=1ms > I: If#= 5 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > I: If#= 5 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=85(I) Atr=0d(Isoc) MxPS= 576 Ivl=1ms > I: If#= 5 Alt= 3 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=85(I) Atr=0d(Isoc) MxPS= 288 Ivl=1ms > I: If#= 5 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=85(I) Atr=0d(Isoc) MxPS= 192 Ivl=1ms > I: If#= 6 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio > I: If#= 7 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > I: If#= 7 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=04(O) Atr=09(Isoc) MxPS= 576 Ivl=1ms > I: If#= 7 Alt= 3 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=04(O) Atr=09(Isoc) MxPS= 288 Ivl=1ms > I: If#= 7 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=04(O) Atr=09(Isoc) MxPS= 192 Ivl=1ms > I: If#= 8 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > I: If#= 8 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=86(I) Atr=0d(Isoc) MxPS= 576 Ivl=1ms > I: If#= 8 Alt= 3 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=86(I) Atr=0d(Isoc) MxPS= 288 Ivl=1ms > I: If#= 8 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio > E: Ad=86(I) Atr=0d(Isoc) MxPS= 192 Ivl=1ms > I: If#= 9 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=snd-usb-audio > E: Ad=81(I) Atr=03(Int.) MxPS= 32 Ivl=1ms > E: Ad=82(I) Atr=02(Bulk) MxPS= 32 Ivl=0ms > E: Ad=02(O) Atr=02(Bulk) MxPS= 32 Ivl=0ms >
