I have an 8GB USB stick that seems to have suffered a "brain transplant" and I wondered if the symptoms are as bizarre as they seem. When inserted, udev fills out the usual symlinks for by-id and by-path, but any attempt to use the stick results in "No medium found".
The output from /run/udev/data/b8:16 looks really bizarre when compared with the original data (when it worked). Now: $ cat /run/udev/data/b8:16 S:disk/by-path/pci-0000:00:14.0-usb-0:4:1.0-scsi-0:0:0:0 S:disk/by-id/usb-Silicon_Motion_Inc._USB_MEMORY_BAR-0:0 W:21 I:4318771640 E:ID_VENDOR=Silicon_Motion_Inc. E:ID_VENDOR_ENC=Silicon\x20Motion\x2cInc.\x20 E:ID_VENDOR_ID=090c E:ID_MODEL=USB_MEMORY_BAR E:ID_MODEL_ENC=USB\x20MEMORY\x20BAR\x20\x20 E:ID_MODEL_ID=3000 E:ID_REVISION=1000 E:ID_SERIAL=Silicon_Motion_Inc._USB_MEMORY_BAR-0:0 E:ID_TYPE=disk E:ID_INSTANCE=0:0 E:ID_BUS=usb E:ID_USB_INTERFACES=:080650: E:ID_USB_INTERFACE_NUM=00 E:ID_USB_DRIVER=usb-storage E:ID_PATH=pci-0000:00:14.0-usb-0:4:1.0-scsi-0:0:0:0 E:ID_PATH_TAG=pci-0000_00_14_0-usb-0_4_1_0-scsi-0_0_0_0 G:systemd $ When working, it resembled its colleagues: N:sdb S:disk/by-id/usb-SMI_USB_DISK-0:0 S:disk/by-path/pci-0000:00:1d.7-usb-0:5:1.0-scsi-0:0:0:0 W:51 I:12420828601 E:ID_BUS=usb E:ID_INSTANCE=0:0 E:ID_MODEL=USB_DISK E:ID_MODEL_ENC=USB\x20DISK\x20\x20\x20\x20\x20\x20\x20\x20 E:ID_MODEL_ID=1000 E:ID_PART_TABLE_TYPE=dos E:ID_PATH=pci-0000:00:1d.7-usb-0:5:1.0-scsi-0:0:0:0 E:ID_PATH_TAG=pci-0000_00_1d_7-usb-0_5_1_0-scsi-0_0_0_0 E:ID_REVISION=1100 E:ID_SERIAL=SMI_USB_DISK-0:0 E:ID_TYPE=disk E:ID_USB_DRIVER=usb-storage E:ID_USB_INTERFACES=:080650: E:ID_USB_INTERFACE_NUM=00 E:ID_VENDOR=SMI E:ID_VENDOR_ENC=SMI\x20\x20\x20\x20\x20 E:ID_VENDOR_ID=090c E:UDISKS_PARTITION_TABLE=1 E:UDISKS_PARTITION_TABLE_COUNT=1 E:UDISKS_PARTITION_TABLE_SCHEME=mbr E:UDISKS_PRESENTATION_NOPOLICY=0 So the vendor and model information are present but different; or are these values an artifact? Is this mode of failure typical or odd? Cheers, David.
