Hi, I am having problems with the tascam 122l soundcard only connecting intermittently. I have always had this problem with ubuntu studio, but only sometimes can get it working. I'd be grateful for any help that you can give me.
I have set all of the options correctly syslog is reporting that there is 'set sample rate error' when I insert the usb card and that there is an invalid bulk endpoint error: Feb 8 16:58:27 XSubuntu11 kernel: [ 1595.224049] usb 1-3: new high speed USB device number 9 using ehci_hcd Feb 8 16:58:27 XSubuntu11 mtp-probe: checking bus 1, device 9: "/sys/devices/pci0000:00/0000:00:10.4/usb1/1-3" Feb 8 16:58:27 XSubuntu11 kernel: [ 1595.356518] usb 1-3: config 1 interface 1 altsetting 1 bulk endpoint 0x83 has invalid maxpacket 9 Feb 8 16:58:27 XSubuntu11 kernel: [ 1595.367823] 9: cannot set freq 44100 to ep 0x81 Feb 8 16:58:28 XSubuntu11 kernel: [ 1595.768033] us122l_set_sample_rate error Feb 8 16:58:28 XSubuntu11 kernel: [ 1595.768065] snd-usb-us122l: probe of 1-3:1.1 failed with error -22 Feb 8 16:58:28 XSubuntu11 kernel: [ 1595.768132] usb 1-3: USB disconnect, device number 9 Feb 8 16:58:28 XSubuntu11 kernel: [ 1596.008042] usb 1-3: new high speed USB device number 10 using ehci_hcd Feb 8 16:58:28 XSubuntu11 kernel: [ 1596.140582] usb 1-3: config 1 interface 1 altsetting 1 bulk endpoint 0x83 has invalid maxpacket 9 Feb 8 16:58:30 XSubuntu11 kernel: [ 1598.140064] 10: cannot set freq 44100 to ep 0x81 Feb 8 16:58:30 XSubuntu11 mtp-probe: bus: 1, device: 9 was not an MTP device Feb 8 16:58:30 XSubuntu11 kernel: [ 1598.544040] us122l_set_sample_rate error Feb 8 16:58:30 XSubuntu11 kernel: [ 1598.544073] snd-usb-us122l: probe of 1-3:1.1 failed with error -22 Feb 8 16:58:30 XSubuntu11 mtp-probe: checking bus 1, device 10: "/sys/devices/pci0000:00/0000:00:10.4/usb1/1-3" Feb 8 16:58:30 XSubuntu11 mtp-probe: bus: 1, device: 10 was not an MTP device I have tried everything that I can think of in order to get it to work and I have set all the options according to the alsa page ( http://www.alsa-project.org/main/index.php/Matrix:Module-usb-us122l) and have read about the patch at (http://wiki.briata.org/doku.php) but this is apparently included in the kernel now. I have recently used the alsa-upgrade script to update the alsa version to the latest release. Alsa is working fine still but I am still getting the same problem. I seem to remember that when I did a clean install from the distro iso, I didn't get the problem as regularly. I have also noticed that in the kernel configuration, the ehci-hcd module is set as compiled into the kernel but I cannot modprobe for it as it is reported as not existing. I am afraid that I do not know whether this is because it is compiled into the kernel or whether it should actually have a module available. some info: I have 3.0.0-15-generic running on a laptop (belinea - out of business, but runs ok) james@XSubuntu11:~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 010: ID 0644:800e TEAC Corp. TASCAM US-122L Bus 001 Device 004: ID 148f:2573 Ralink Technology, Corp. RT2501/RT2573 Wireless Adapter Bus 001 Device 005: ID 05e3:0503 Genesys Logic, Inc. Webcam Bus 003 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) james@XSubuntu11:~$ cat /proc/asound/cards 0 [VT82xx ]: HDA-Intel - HDA VIA VT82xx HDA VIA VT82xx at 0xcb000000 irq 17 Is there any news on a stable 11.10 low latency kernel? Also, is there a feature request place (perhaps here) - I came across tuxonice today and was wondering if it would be possible to request its inclusion into the kernel. I don't want to attempt to patch the kernel myself, although I may try. Also, is there a way of helping at all with the development. I am a reasonably experienced amateur developer in a number of oop and scripting languages although my experience with kernel development is absolutely minimal (I still haven't attempted my own kernel compiling or patching (at least not successfully!). I am also an experienced musician and a competent web developer /designer. Finally, thanks for ubuntu studio. The XFCE wm is great on resources, and laditray and gladish are a godsend. James -- James Stewart Miller Bsc(hons) Psych.
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