I am sorry to necrobump, but I don't get it. $ sudo echo -n '2-3' | tee -a /sys/bus/usb/drivers/usb/unbind
Produces, on my system, this: 'tee: unbind: Permission denied'. Similarly if I have used 'su' to obtain root: # echo -n '2-3' | tee -a /sys/bus/usb/drivers/usb/unbind 2-3tee: /sys/bus/usb/drivers/usb/unbind: No such device # ls /sys/bus/usb/drivers/usb 1-1 1-1.2 1-1.6 2-1 bind uevent unbind usb1 usb2 usb3 usb4 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to sudo in Ubuntu. https://bugs.launchpad.net/bugs/288964 Title: sudo does not work with unbinding usb interface from usbhid driver Status in sudo package in Ubuntu: Invalid Bug description: I was looking for a way to dump the HID report descriptor under Linux. For that purpose, I need to detach the kernel usbhid driver from the HID interfaces. More detail in libusb mailing list archive. http://www.nabble.com/How-to-dump-HID-report-descriptor-under-Linux-td19609562.html mcuee@Ubuntu804:~$ uname -a Linux Ubuntu804 2.6.24-21-generic #1 SMP Mon Aug 25 17:32:09 UTC 2008 i686 GNU/Linux mcuee@Ubuntu804:/sys/bus/usb/drivers/usbhid$ lsusb Bus 001 Device 007: ID 04f2:0760 Chicony Electronics Co., Ltd Bus 001 Device 006: ID ffff:0005 Bus 001 Device 005: ID 046d:c054 Logitech, Inc. Bus 001 Device 004: ID 14c0:0008 Bus 001 Device 003: ID 1947:0033 Bus 001 Device 002: ID 058f:9360 Alcor Micro Corp. 8-in-1 Media Card Reader Bus 001 Device 001: ID 0000:0000 Bus 002 Device 001: ID 0000:0000 mcuee@Ubuntu804:/sys/bus/usb/drivers/usbhid$ ls 1-3:1.0 1-5:1.0 1-7:1.0 1-7:1.1 bind module new_id uevent unbind So far so good. But then there is error thereafter. Maybe this is a Ubuntu specific problem. mcuee@Ubuntu804:/sys/bus/usb/drivers/usbhid$ sudo echo -n 1-7:1.0 >unbind bash: unbind: Permission denied mcuee@Ubuntu804:/sys/bus/usb/drivers/usbhid$ sudo echo -n 1-7:1.1 >unbind bash: unbind: Permission denied It turns out that I need to enable root to be able to do the job. mcuee@Ubuntu804:/sys/bus/usb/drivers/usbhid$ sudo passwd root [sudo] password for mcuee: Enter new UNIX password: Retype new UNIX password: passwd: password updated successfully mcuee@Ubuntu804:/sys/bus/usb/drivers/usbhid$ ls 1-3:1.0 1-5:1.0 1-7:1.0 1-7:1.1 bind module new_id uevent unbind mcuee@Ubuntu804:/sys/bus/usb/drivers/usbhid$ su - Password: root@Ubuntu804:~# cd /sys/bus/usb/drivers/usbhid/ root@Ubuntu804:/sys/bus/usb/drivers/usbhid# ls 1-3:1.0 1-5:1.0 1-7:1.0 1-7:1.1 bind module new_id uevent unbind root@Ubuntu804:/sys/bus/usb/drivers/usbhid# echo -n 1-7:1.0 >unbind root@Ubuntu804:/sys/bus/usb/drivers/usbhid# echo -n 1-7:1.1 >unbind To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/288964/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
