I've read about this problem with multiple distributions and kernels, and on occasion I read that it had been patched. I think there is a problem with the ehci / high speed USB 3.0 modules in the kernel. Other USB's don't work, this is a problem with the system not the USB. The USB DOES NOT work in guest mode but WORKS in live session mode.
├─sda4 8:4 0 32G 0 part /media/kagz/New Volume Requested command output: sudo lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
#SANDISK CRUZER DRIVER WINDOWS 8.1 WINDOWS 7#
The funny thing is that Windows 7 detects it and uses it fine but it's not detected in Ubuntu except by the lsusb command. I backed up my data in another laptop, formatted the drive in Windows 7 but still it's not recognized. I don't know what to do anymore to get it detected and I don't want to format it as it contains important data. Sep 10 22:28:25 xhakz mtp-probe: bus: 2, device: 7 was not an MTP device Sep 10 22:28:25 xhakz kernel: usb 2-2: Manufacturer: SanDisk Sep 10 22:28:25 xhakz kernel: usb 2-2: Product: Cruzer Facet Sep 10 22:28:25 xhakz kernel: usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Sep 10 22:28:25 xhakz kernel: usb 2-2: New USB device found, idVendor=0781, idProduct=5576 Sep 10 22:28:25 xhakz kernel: usb 2-2: new high-speed USB device number 7 using ehci-pci Tail -f /var/log/syslog Sep 10 22:28:22 xhakz kernel: usb 2-2: USB disconnect, device number 4 E220 HSDPA Modem / E230/E270/E870 HSDPA/HSUPA Modemīus 002 Device 004: ID 0781:5576 SanDisk Corp.īus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubīus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hubīus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hubīus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hubīus 005 Device 002: ID 1a2c:0021 China Resource Semico Co., Ltd Keyboardīus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hubīus 001 Device 002: ID 04f2:b070 Chicony Electronics Co., Ltdīus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubīus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hubīus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Here's some terminal output: lsusb Bus 002 Device 006: ID 12d1:1003 Huawei Technologies Co., Ltd. Lsusb detects it but sudo fdisk -l or blkid doesn't. I have a SanDisk 16GB USB drive that is not being detected by Ubuntu 14.04 but is detected by Windows 7.