I recently purchased a "Seagate 2TB Expansion Desktop Drive" from a UK store. The unix command 'lsusb -v' shows: idVendor 0x0bc2 Seagate RSS LLC idProduct 0x331a When plugged in this failed to install correctly. The first few lines of the error messages (journalctl -f ) contained: kernel: usb 2-7: new SuperSpeed USB device number 6 using xhci_hcd kernel: usb 2-7: New USB device found, idVendor=0bc2, idProduct=331a kernel: usb 2-7: New USB device strings: Mfr=1, Product=2, SerialNumber=3 kernel: usb 2-7: Product: Expansion Desk kernel: usb 2-7: Manufacturer: Seagate kernel: usb 2-7: SerialNumber: NA8EFXP3 mtp-probe[25968]: checking bus 2, device 6: "/sys/devices/pci0000:00/0000:00:14.0/usb2/2-7" mtp-probe[25968]: bus: 2, device: 6 was not an MTP device Following advice on the web I created file '/etc/modprobe.d/ignore_uas.conf' containing the line "options usb-storage quirks=0bc2:331a:u". The disk could then be mounted and used without any problems. Having checked the 'unusual_uas.h' code, both for my distribution (openSUSE 42.1 using linux 4.1.15-8) and the latest version of linux on github, I tried replacing the 'u' flag in the ignore file with a 't' flag and found that the device still worked correctly. As the 't' flag corresponds to US_FL_NO_ATA_1X and assuming that using uas, with a shorter message length, is better than bypassing it, I suggest that the following lines be inserted in the file 'unusual_uas.h': /* Reported-by: David Webb <djw@xxxxxxxxx> */ UNUSUAL_DEV(0x0bc2, 0x331a, 0x0000, 0x9999, "Seagate", "Expansion Desk", USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_NO_ATA_1X), I presume that the "0x0000, 0x9999" and "USB_SC_DEVICE, USB_PR_DEVICE, NULL," bits are correct (I copied them from the other Seagate entries) but someone more knowledgeable should check. If you need any further information or listing, just let me know. Regards, David Webb. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
