Joseph Zitt wrote: > Clemens Ladisch wrote: > > Joseph Zitt wrote: > > > >>[...] I have a Roland UA-30 USB Audio device, but so far I've > >>found that plugging it in when the system is running crashes the > >>machine completely, and that the machine fails to finish booting > >>when I boot it up with the device already hooked in. > > > > > > Add the lines > > > > audio > > snd-usb-audio > > > > to your /etc/hotplug/blacklist file (or create it if it doesn't > > exist). This should prevent the crashing driver from being loaded > > automatically. > > OK, I did that, and the system didn't crash when I hooked up the UA-30. You previously used the OSS drivers (including "audio"). Does your computer still crash if you run "modprobe snd-usb-audio"? > > And please post the output of "lsusb -v" (when the UA-30 is > > connected) > > Here's the output. That "Invalid product/subclass spec at line 2650" is > interesting, > > What file would the errant line 2650 be in? One of lsusb's source files, I guess. > ... as is the "cannot get config descriptor 0, Connection timed > out (110)" for the UA-30. This would have been the interesting part. There are two drivers for UHCI controllers, uhci and usb-uhci. Sometimes, one of them works and the other one doesn't. Pleasy do "rmmod usb-uhci" and "modprobe uhci", then try to run lsusb again. If this doesn't help, you can try out a newer version of the usbutils package. > iManufacturer 1 Roland > iProduct 2 UA-30 (44100Hz, Analog REC) It seems the UA-30 has switches to select the recording format. Maybe another combination might work. > [root@localhost mp3]# cat /proc/asound/version > Advanced Linux Sound Architecture Driver Version 0.9.0rc8. > Compiled on Mar 14 2003 for kernel 2.4.21-0.13mdk with versioned symbols. This is a shiny new kernel with a rather old ALSA version. Please try a more recent ALSA version, there have been some changes to the snd-usb-audio driver since then. HTH Clemens
