External Transcend USB drive not detected

[Oleksii Frishman]

I have two Transcend USB drive enclosures. When they were purchased (in 2019) they were working fine all the time with different disks inside (HDD, SSD). But at some point, probably after some system update, they stopped working completely and are not even visible in partitioning software or fdisk utility.

I use currently Kubuntu 20.04 on Dell XPS 9570. I tried booting from fresh Kubuntu 20.04 live USB drive, and the external drive **is actually visible there**

Expected behaviour: after plugging into USB port the external drive is automatically mounted and accessible via file manager

Actual behaviour: the external drive is not mounted and not even visible in partitioning software or fdisk utility. The drive is visible and mounted correctly while booting from fresh Kubuntu 20.04 live USB drive

Drives are visible in dmesg:

[111851.908755] usb 2-1: new SuperSpeed Gen 1 USB device number 2 using xhci_hcd
[111851.957345] usb 2-1: New USB device found, idVendor=8564, idProduct=7000, bcdDevice=80.00
[111851.957351] usb 2-1: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[111851.957355] usb 2-1: Product: StoreJet Transcend
[111851.957358] usb 2-1: Manufacturer: StoreJet Transcend
[111851.957360] usb 2-1: SerialNumber: WL1J5AXN
[111852.008854] usbcore: registered new interface driver usb-storage
[112321.441847] usb 2-1: USB disconnect, device number 2
[112351.943134] usb 2-2: new SuperSpeed Gen 1 USB device number 3 using xhci_hcd
[112351.991510] usb 2-2: New USB device found, idVendor=8564, idProduct=7000, bcdDevice=80.00
[112351.991516] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[112351.991519] usb 2-2: Product: StoreJet Transcend
[112351.991522] usb 2-2: Manufacturer: StoreJet Transcend
[112351.991525] usb 2-2: SerialNumber: WL1J5AXN

and in lsusb:

Bus 002 Device 003: ID 8564:7000 Transcend Information, Inc. StoreJet Transcend
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 27c6:5395 Shenzhen Goodix Technology Co.,Ltd. Fingerprint Reader
Bus 001 Device 002: ID 0cf3:e301 Qualcomm Atheros Communications
Bus 001 Device 004: ID 0c45:671d Microdia Integrated_Webcam_HD
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

but not in fdisk:

Disk /dev/nvme0n1: 465,78 GiB, 500107862016 bytes, 976773168 sectors
Disk model: Samsung SSD 970 EVO Plus 500GB
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: E856D149-62E7-4FB3-ABA9-69D13C8600A2

Device Start End Sectors Size Type
/dev/nvme0n1p1 2048 1050623 1048576 512M EFI System
/dev/nvme0n1p2 1050624 976773119 975722496 465,3G Linux filesystem

GPT PMBR size mismatch (1953525151 != 1953525167) will be corrected by write.
The backup GPT table is not on the end of the device. This problem will be corrected by write.
Disk /dev/sda: 931,53 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: Samsung SSD 860
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 0825A324-D2CE-4466-8664-65C9CF9A13B7

Device Start End Sectors Size Type
/dev/sda1 2048 1953519615 1953517568 931,5G Linux filesystem

The above output shows my two internal SSDs, but not the external HDD in the Transcend enclosure. "loop" devices are omitted for clarity.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-37-generic 5.4.0-37.41
ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41
Uname: Linux 5.4.0-37-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: nucleo 2391 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Sun Jun 21 14:26:39 2020
InstallationDate: Installed on 2019-01-03 (535 days ago)
InstallationMedia: Kubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: Dell Inc. XPS 15 9570
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-37-generic root=UUID=49388a36-51f5-4d3d-8cb3-7da9644f73d1 ro quiet splash acpi_rev_override=1 acpi_osi=Linux nouveau.modeset=0 pcie_aspm=force drm.vblankoffdelay=1 scsi_mod.use_blk_mq=1 nouveau.runpm=0 mem_sleep_default=deep pti=off spectre_v2=off l1tf=off nospec_store_bypass_disable no_stf_barrier vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-37-generic N/A
 linux-backports-modules-5.4.0-37-generic N/A
 linux-firmware 1.187
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-05-31 (20 days ago)
dmi.bios.date: 04/21/2020
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.16.2
dmi.board.name: 082GV9
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.16.2:bd04/21/2020:svnDellInc.:pnXPS159570:pvr:rvnDellInc.:rn082GV9:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 15 9570
dmi.product.sku: 087C
dmi.sys.vendor: Dell Inc.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.