There is a work-around that re-enables /proc/bus/usb/devices: Support for /proc/bus/usb/* was removed in the initscripts package (part of sysvinit), as per this changelog entry:
sysvinit (2.86.ds1-14.1ubuntu22) gutsy; urgency=low * Drop /proc/bus/usb again; software should all be ported to check /dev/bus/usb first by now. -- Scott James Remnant <[EMAIL PROTECTED]> Wed, 11 Jul 2007 13:47:24 +0100 To re-enable it edit the file '/etc/init.d/mountdevsubfs.sh' and uncomment the code after line 40 so it reads: # Magic to make /proc/bus/usb work # mkdir -p /dev/bus/usb/.usbfs domount usbfs "" /dev/bus/usb/.usbfs -obusmode=0700,devmode=0600,listmode=0644 ln -s .usbfs/devices /dev/bus/usb/devices mount --rbind /dev/bus/usb /proc/bus/usb Execute the script manually to enable the change before a system reboot: $ sudo /etc/init.d/mountdevsubfs.sh start I'm adding the sysvinit package to this bug-report since the changelog entry says applications should now use /dev/bus/usb, but it seems that usb is the only 'bus' using that location. Everything else uses /sys/bus/. Therefore it directly causes the qemu/kvm problem. It seems illogical to require all applications that access USB to be patched for this. There's a related bug report for VirtualBox with a comment by Scott, but no rationale to why it was done. Bug #151585 "USB Devices unrecognised by virtualbox (/proc/bus/usb missing)" ** Also affects: sysvinit (Ubuntu) Importance: Undecided Status: New -- Could not open /proc/bus/usb/devices https://bugs.launchpad.net/bugs/156085 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs