Thank you oldfred for the assistance; this is what I got from your suggested commands (done with the dock connected):
Code:
XPS-13-9370:~$ sudo fwupdmgr get-devices
[sudo] password for gingus:
XPS 13 9370 Thunderbolt Controller
DeviceId: 798df3df54f1b1b43fc0e9769c50c03255a9fda4
Guid: 4eeb9d07-a96c-56d6-92d3-4a23ee7a6e4a <- TBT-00d407e6
Summary: Unmatched performance for high-speed I/O
Plugin: thunderbolt
Flags: internal|updatable|registered
Vendor: Dell
VendorId: TBT:0x00D4
Version: 33.00
Icon: computer
Created: 2019-11-20
Dell Thunderbolt Cable
DeviceId: ffd20a9e0ee77fe2197c7de5aa7856fb4c886c1e
Guid: b4fd3cdf-4e3a-5090-a583-45367cfd6421 <- TBT-00d4b051
Plugin: thunderbolt
Flags: updatable|registered
Vendor: Dell
VendorId: TBT:0x00D4
Version: 16.00
Icon: audio-card
Created: 2019-11-20
Dell Thunderbolt Dock
DeviceId: cfa51b7ee2e9da6f96f618c66aba87b185f1c11e
Guid: 76cc74d4-f062-5b93-a11c-8d2a58a25848 <- TBT-00d4b054
Plugin: thunderbolt
Flags: updatable|registered
Vendor: Dell
VendorId: TBT:0x00D4
Version: 27.00
Icon: audio-card
Created: 2019-11-20
XPS 13 9370 System Firmware
DeviceId: 8a21cacfb0a8d2b30c5ee9290eb71db021619f8b
Guid: 7ceaf7a8-0611-4480-9e30-64d8de420c7c
Plugin: uefi
Flags: internal|updatable|require-ac|supported|registered|needs-reboot
Version: 0.1.11.1
VersionLowest: 0.1.11.1
Icon: computer
Created: 2019-11-20
KXG60ZNV512G NVMe TOSHIBA 512GB
DeviceId: f954c7acdf5fab61aeaca1cd71d29ea5ade6992f
Guid: 8a412b95-5c07-5ce4-b63a-f9cbf254dd5d <- STORAGE-DELL-107443
Guid: 344c2804-4948-e811-842f-0ed5f89f718b
Serial: Z83A20RJK02N
Summary: NVM Express Solid State Drive
Plugin: nvme
Flags: internal|updatable|require-ac|registered|needs-reboot|no-auto-instance-ids
Vendor: Toshiba America Info Systems
VendorId: NVME:0x1179
Version: 10604103
Icon: drive-harddisk
Created: 2019-11-20
gingus@gingus-XPS-13-9370:~$ sudo fwupdmgr get-updates
No upgrades for XPS 13 9370 System Firmware, current is 0.1.11.1: 0.1.11.1=same, 0.1.10.0=older, 0.1.9.0=older, 0.1.8.1=older, 0.1.6.3=older
gingus@gingus-XPS-13-9370:~$
Still the dock does not work (a part from the external display)
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