I just went back to using my Precision 5520 with the TB16 dock, after that duo was benched for a few months while I waited for a replacement battery to be shipped, and now the situation is similar but worse:
Every time I connect the dock cable, Linux tries to attached the USB hub, fails and disconnects the XHcI bus. Running the reset script details above (basically running "unbind" and the "bind" with the dock's bus address) allows the bus to be usable, though often it takes a couple of tries. Attached is the dmesg log from connection through the error and the reset (timepoint documented in the log itself). Interesting things that may or may not be related: 1. it takes a *very*long*time* for the system to connect the USB devices: the reset command occurred at 455, all the devices except the mouse got connected by 458 (13 seconds), with the mouse waiting until 471 (there were a few errors in the log specific to the logitech-hidpp-device, probably related). 2. I see a lot of `BAR 13: no space for [io size 0xXXXX]` in dmesg, followed by `BAR 13: failed to assign [io size 0xXXXX]`. I'm running eoan full updated with kernel 5.3.0-24-generic. I have ran all the BIOS firmware updates and the MS-Windows "Dell Precision Optimizer" system updates including the Thunderbolt controller driver update. Here's the fwupdmgr report: ``` Precision M5520 Thunderbolt Controller DeviceId: 51d36e5f8f25bea1d8707a72ab7b9386a98527ee Guid: c5364422-2ec3-5092-b30e-03bdb1a53e4a Summary: Unmatched performance for high-speed I/O Plugin: thunderbolt Flags: internal|updatable|require-ac|registered Vendor: Dell VendorId: TBT:0x00D4 Version: 26.01 VersionFormat: pair Icon: computer Created: 2019-12-09 Dell Thunderbolt Cable DeviceId: aa4dfab63945b6e8ad913550d241978e3562f8bf ParentDeviceId: 84edf044a6b53037732cfc7591b65a8d36384cc9 Guid: b4fd3cdf-4e3a-5090-a583-45367cfd6421 Plugin: thunderbolt Flags: updatable|require-ac|registered Vendor: Dell VendorId: TBT:0x00D4 Version: 16.00 VersionFormat: pair Icon: audio-card Created: 2019-12-09 Dell Thunderbolt Dock DeviceId: 64575ad9f31dbe3959942f4b2275c1c4d0ac2ac5 ParentDeviceId: 84edf044a6b53037732cfc7591b65a8d36384cc9 Guid: 76cc74d4-f062-5b93-a11c-8d2a58a25848 Plugin: thunderbolt Flags: updatable|require-ac|registered Vendor: Dell VendorId: TBT:0x00D4 Version: 16.00 VersionFormat: pair Icon: audio-card Created: 2019-12-09 Precision 5520 System Firmware DeviceId: f49999b6e3af5b4bf8ad1f2ed2922b76df457271 Guid: 34578c72-11dc-4378-bc7f-b643866f598c Plugin: uefi Flags: internal|updatable|require-ac|supported|registered|needs-reboot Checksum: SHA1(de646f75ada7857150e2c6263dc59b1e51b944a8) Checksum: SHA256(384c7594f033f64900148798be55939cdabfe502f8458febeb02884b920cf460) Version: 0.1.16.0 VersionLowest: 0.1.16.0 VersionFormat: quad Icon: computer Created: 2019-12-09 UpdateState: success Synaptics VMM3320 inside Dell WD15/TB16/TB18 wired Dock DeviceId: 7b3cbc344094ace839263dd4711c84ea99bb6dc3 ParentDeviceId: 84edf044a6b53037732cfc7591b65a8d36384cc9 Guid: 152a9833-41e6-5c21-9dde-0ff8984f3e20 Guid: 0a52c8c7-26d5-59a0-ae44-6b00e276d775 Guid: 51000744-2de6-5a52-8a86-d5f69fd73d34 Summary: Multi-Stream Transport Device Plugin: synapticsmst Flags: updatable|registered Vendor: Synaptics Version: 3.10.002 VersionFormat: triplet Icon: computer Created: 2019-12-09 Synaptics VMM3330 inside Dell WD15/TB16/TB18 wired Dock DeviceId: d83854e8c81f5d47b0b99c8a3b42ae5127c75eb8 ParentDeviceId: 84edf044a6b53037732cfc7591b65a8d36384cc9 Guid: c0f73159-4fc0-509b-80f8-5f871f3751a8 Guid: be025b25-ca5c-546c-97c6-ee2160ba489d Guid: 190e8d7c-6bcf-5fab-94e7-4f8739eb90aa Summary: Multi-Stream Transport Device Plugin: synapticsmst Flags: updatable|registered Vendor: Synaptics Version: 3.10.002 VersionFormat: triplet Icon: computer Created: 2019-12-09 Dell TB16 Thunderbolt Cable DeviceId: f8194a42320518472a2e67c1d89018c7a5219841 ParentDeviceId: 84edf044a6b53037732cfc7591b65a8d36384cc9 Guid: 6dc832fc-5bb0-4e63-a2ff-02aaba5bc1dc Summary: A Thunderbolt™ 3 docking station Plugin: uefi Flags: updatable|require-ac|registered|needs-reboot Vendor: Dell Inc. Version: 0.0.3.18 VersionFormat: quad Icon: computer Created: 2019-12-09 Dell TB16 Port Controller 1 DeviceId: b3fa3dc04e3450450bb17910417562e5b6cf69d0 ParentDeviceId: 84edf044a6b53037732cfc7591b65a8d36384cc9 Guid: 8fe183da-c94e-4804-b319-0f1ba5457a69 Summary: A Thunderbolt™ 3 docking station Plugin: uefi Flags: updatable|require-ac|registered|needs-reboot Vendor: Dell Inc. Version: 0.1.2.17 VersionFormat: quad Icon: computer Created: 2019-12-09 Dell TB16 Port Controller 2 DeviceId: 4bcf1477575b55912993240dd1edd8b0ebb6d491 ParentDeviceId: 84edf044a6b53037732cfc7591b65a8d36384cc9 Guid: 1b52c630-86f6-4aee-9f0c-474dc6be49b6 Summary: A Thunderbolt™ 3 docking station Plugin: uefi Flags: updatable|require-ac|registered|needs-reboot Vendor: Dell Inc. Version: 0.1.2.50 VersionFormat: quad Icon: computer Created: 2019-12-09 Dell TB16 DeviceId: 84edf044a6b53037732cfc7591b65a8d36384cc9 Guid: e7ca1f36-bf73-4574-afe6-a4ccacabf479 Summary: A Thunderbolt™ 3 docking station Plugin: uefi Flags: updatable|require-ac|registered|needs-reboot Vendor: Dell Inc. Version: 0.0.0.0 VersionFormat: quad Icon: computer Created: 2019-12-09 ``` I haven't had a spurious failure during work yet (just started working with it today), I'll report if that happens. ** Attachment added: "dmesg log of XHCI failure" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1766076/+attachment/5311078/+files/tbdock.log -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1766076 Title: USB over thunderbolt turns off every once in a while Status in Dell Sputnik: New Status in linux package in Ubuntu: Incomplete Bug description: I'm using a USB hub in the Dell TB16 (240W) connected to a Dell Precision 5520 using Thunderbolt 3. Every so often (can be several times in an hour if I'm really unlucky, some days it is less of a problem), the USB hub disconnects from the computer and the devices connected to it lose power and stop responding. disconnecting and reconnecting the USB cables has no effect. I can restore functionality by instructing the xhci_hcd driver to unbind from the USB 3.0 Host Controller in the dock and to rebind to it using the commands: echo -n "0000:0e:00.0" > /sys/bus/pci/drivers/xhci_hcd/unbind echo -n "0000:0e:00.0" > /sys/bus/pci/drivers/xhci_hcd/bind Here's the dmesg output when the USB hub disconnects: 279278.102701] xhci_hcd 0000:0e:00.0: ERROR unknown event type 15 [279283.021802] xhci_hcd 0000:0e:00.0: xHCI host not responding to stop endpoint command. [279283.022145] xhci_hcd 0000:0e:00.0: xHCI host controller not responding, assume dead [279283.022161] r8152 4-1.2:1.0 enxd481d731b2b1: Tx status -108 [279283.022199] xhci_hcd 0000:0e:00.0: HC died; cleaning up [279283.022227] usb 3-1.5: Failed to suspend device, error -22 [279283.022234] usb 3-1: USB disconnect, device number 2 [279283.022235] usb 3-1.1: USB disconnect, device number 3 [279283.022236] usb 3-1.1.1: USB disconnect, device number 5 [279283.022237] usb 3-1.1.1.1: USB disconnect, device number 8 [279283.022238] usb 3-1.1.1.1.4: USB disconnect, device number 11 [279283.022326] usb 4-1: USB disconnect, device number 2 [279283.022328] usb 4-1.1: USB disconnect, device number 3 [279283.022329] usb 4-1.1.1: USB disconnect, device number 5 [279283.022998] usb 4-1.2: USB disconnect, device number 4 [279283.191217] usb 3-1.1.1.5: USB disconnect, device number 9 [279283.191730] usb 3-1.1.3: USB disconnect, device number 6 [279283.260810] usb 3-1.1.5: USB disconnect, device number 7 [279283.261350] usb 3-1.5: USB disconnect, device number 4 Here's dmesg output during the USB host controller reset: 279389.813889] xhci_hcd 0000:0e:00.0: remove, state 1 [279389.813894] usb usb4: USB disconnect, device number 1 [279389.814103] xhci_hcd 0000:0e:00.0: USB bus 4 deregistered [279389.814107] xhci_hcd 0000:0e:00.0: remove, state 1 [279389.814110] usb usb3: USB disconnect, device number 1 [279389.881651] xhci_hcd 0000:0e:00.0: USB bus 3 deregistered [279389.882133] xhci_hcd 0000:0e:00.0: xHCI Host Controller [279389.882138] xhci_hcd 0000:0e:00.0: new USB bus registered, assigned bus number 3 [279389.949391] xhci_hcd 0000:0e:00.0: hcc params 0x0200e081 hci version 0x100 quirks 0x10000410 [279389.949979] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002 [279389.949981] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [279389.949982] usb usb3: Product: xHCI Host Controller [279389.949983] usb usb3: Manufacturer: Linux 4.15.0-15-generic xhci-hcd [279389.949983] usb usb3: SerialNumber: 0000:0e:00.0 [279389.950117] hub 3-0:1.0: USB hub found [279389.950135] hub 3-0:1.0: 2 ports detected [279389.950310] xhci_hcd 0000:0e:00.0: xHCI Host Controller [279389.950314] xhci_hcd 0000:0e:00.0: new USB bus registered, assigned bus number 4 [279389.951098] usb usb4: We don't know the algorithms for LPM for this host, disabling LPM. [279389.951117] usb usb4: New USB device found, idVendor=1d6b, idProduct=0003 [279389.951119] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [279389.951120] usb usb4: Product: xHCI Host Controller [279389.951121] usb usb4: Manufacturer: Linux 4.15.0-15-generic xhci-hcd [279389.951122] usb usb4: SerialNumber: 0000:0e:00.0 [279389.951306] hub 4-0:1.0: USB hub found [279389.951321] hub 4-0:1.0: 2 ports detected [279390.299396] usb 4-1: new SuperSpeed USB device number 2 using xhci_hcd [279390.321750] usb 4-1: New USB device found, idVendor=0424, idProduct=5807 [279390.321752] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [279390.321753] usb 4-1: Product: USB5807 Hub [279390.321754] usb 4-1: Manufacturer: Microchip [279390.341684] hub 4-1:1.0: USB hub found [279390.342312] hub 4-1:1.0: 7 ports detected [279390.513286] usb 3-1: new high-speed USB device number 2 using xhci_hcd [279390.750013] usb 3-1: New USB device found, idVendor=0424, idProduct=2807 [279390.750015] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [279390.750016] usb 3-1: Product: USB2807 Hub [279390.750017] usb 3-1: Manufacturer: Microchip [279390.769651] hub 3-1:1.0: USB hub found [279390.769793] hub 3-1:1.0: 7 ports detected [279390.839440] usb 4-1.1: new SuperSpeed USB device number 3 using xhci_hcd [279390.861567] usb 4-1.1: New USB device found, idVendor=0424, idProduct=5734 [279390.861568] usb 4-1.1: New USB device strings: Mfr=2, Product=3, SerialNumber=0 [279390.861569] usb 4-1.1: Product: USB5734 [279390.861570] usb 4-1.1: Manufacturer: Microchip Tech [279390.881472] hub 4-1.1:1.0: USB hub found [279390.882171] hub 4-1.1:1.0: 5 ports detected [279390.991442] usb 4-1.2: new SuperSpeed USB device number 4 using xhci_hcd [279391.015809] usb 4-1.2: New USB device found, idVendor=0bda, idProduct=8153 [279391.015811] usb 4-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=6 [279391.015812] usb 4-1.2: Product: USB 10/100/1000 LAN [279391.015813] usb 4-1.2: Manufacturer: Realtek [279391.015814] usb 4-1.2: SerialNumber: 000001000000 [279391.089207] usb 3-1.1: new high-speed USB device number 3 using xhci_hcd [279391.211462] usb 3-1.1: New USB device found, idVendor=0424, idProduct=2734 [279391.211481] usb 3-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [279391.211482] usb 3-1.1: Product: USB2734 [279391.211483] usb 3-1.1: Manufacturer: Microchip Tech [279391.231366] hub 3-1.1:1.0: USB hub found [279391.231502] hub 3-1.1:1.0: 5 ports detected [279391.302796] usb 4-1.2: reset SuperSpeed USB device number 4 using xhci_hcd [279391.355371] usb 4-1.2: Dell TB16 Dock, disable RX aggregation [279391.370639] r8152 4-1.2:1.0 (unnamed net_device) (uninitialized): Using pass-thru MAC addr d4:81:d7:31:b2:b1 [279391.401126] usb 3-1.5: new high-speed USB device number 4 using xhci_hcd [279391.425377] r8152 4-1.2:1.0 eth0: v1.09.9 [279391.588750] usb 3-1.5: New USB device found, idVendor=0bda, idProduct=4014 [279391.588752] usb 3-1.5: New USB device strings: Mfr=3, Product=1, SerialNumber=2 [279391.588754] usb 3-1.5: Product: USB Audio [279391.588755] usb 3-1.5: Manufacturer: Generic [279391.588757] usb 3-1.5: SerialNumber: 200901010001 [279391.663127] usb 4-1.1.1: new SuperSpeed USB device number 5 using xhci_hcd [279391.685637] usb 4-1.1.1: New USB device found, idVendor=0424, idProduct=5734 [279391.685639] usb 4-1.1.1: New USB device strings: Mfr=2, Product=3, SerialNumber=0 [279391.685640] usb 4-1.1.1: Product: USB5734 [279391.685641] usb 4-1.1.1: Manufacturer: Microchip Tech [279391.812609] hub 4-1.1.1:1.0: USB hub found [279391.813185] hub 4-1.1.1:1.0: 5 ports detected [279391.973147] usb 3-1.1.1: new high-speed USB device number 5 using xhci_hcd [279392.095383] usb 3-1.1.1: New USB device found, idVendor=0424, idProduct=2734 [279392.095386] usb 3-1.1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [279392.095388] usb 3-1.1.1: Product: USB2734 [279392.095389] usb 3-1.1.1: Manufacturer: Microchip Tech [279392.104109] r8152 4-1.2:1.0 enxd481d731b2b1: renamed from eth0 [279392.165057] IPv6: ADDRCONF(NETDEV_UP): enxd481d731b2b1: link is not ready [279392.187087] IPv6: ADDRCONF(NETDEV_UP): enxd481d731b2b1: link is not ready [279392.398705] hub 3-1.1.1:1.0: USB hub found [279392.398894] hub 3-1.1.1:1.0: 5 ports detected [279392.625122] usb 3-1.1.3: new full-speed USB device number 6 using xhci_hcd [279392.884608] usb 3-1.1.3: New USB device found, idVendor=046d, idProduct=c52b [279392.884609] usb 3-1.1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [279392.884610] usb 3-1.1.3: Product: USB Receiver [279392.884611] usb 3-1.1.3: Manufacturer: Logitech [279392.934819] logitech-djreceiver 0003:046D:C52B.0091: hiddev1,hidraw3: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:0e:00.0-1.1.3/input2 [279393.062222] logitech-hidpp-device 0003:046D:402D.0092: hidraw4: USB HID v1.11 Keyboard [Logitech M560] on usb-0000:0e:00.0-1.1.3:1 [279393.133173] usb 3-1.1.5: new high-speed USB device number 7 using xhci_hcd [279393.260962] usb 3-1.1.5: New USB device found, idVendor=0424, idProduct=274c [279393.260965] usb 3-1.1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [279393.260966] usb 3-1.1.5: Product: Hub Controller [279393.260967] usb 3-1.1.5: Manufacturer: Microchip Tech [279393.337238] usb 3-1.1.1.1: new high-speed USB device number 8 using xhci_hcd [279393.463217] usb 3-1.1.1.1: New USB device found, idVendor=05e3, idProduct=0608 [279393.463236] usb 3-1.1.1.1: New USB device strings: Mfr=0, Product=1, SerialNumber=0 [279393.463237] usb 3-1.1.1.1: Product: USB2.0 Hub [279393.839721] hid-generic 0003:0424:274C.0093: hiddev2,hidraw5: USB HID v1.10 Device [Microchip Tech Hub Controller] on usb-0000:0e:00.0-1.1.5/input0 [279393.857686] hub 3-1.1.1.1:1.0: USB hub found [279393.858162] hub 3-1.1.1.1:1.0: 4 ports detected [279393.985185] usb 3-1.1.1.5: new high-speed USB device number 9 using xhci_hcd Software: Ubuntu bionic beta Uname: Linux xxxxx 4.15.0-15-generic #16-Ubuntu SMP Wed Apr 4 13:58:14 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux lspci: 00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 05) 00:01.0 PCI bridge: Intel Corporation Skylake PCIe Controller (x16) (rev 05) 00:02.0 VGA compatible controller: Intel Corporation Device 591b (rev 04) 00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 05) 00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31) 00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31) 00:15.0 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #0 (rev 31) 00:15.1 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #1 (rev 31) 00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31) 00:17.0 SATA controller: Intel Corporation Sunrise Point-H SATA controller [AHCI mode] (rev 31) 00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #1 (rev f1) 00:1c.1 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #2 (rev f1) 00:1d.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #9 (rev f1) 00:1d.4 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #13 (rev f1) 00:1d.6 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #15 (rev f1) 00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31) 00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31) 00:1f.3 Audio device: Intel Corporation CM238 HD Audio Controller (rev 31) 00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31) 01:00.0 3D controller: NVIDIA Corporation GM107GLM [Quadro M1200 Mobile] (rev ff) 02:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32) 03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader (rev 01) 04:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM961/PM961 06:00.0 PCI bridge: Intel Corporation DSL6340 Thunderbolt 3 Bridge [Alpine Ridge 2C 2015] 07:00.0 PCI bridge: Intel Corporation DSL6340 Thunderbolt 3 Bridge [Alpine Ridge 2C 2015] 07:01.0 PCI bridge: Intel Corporation DSL6340 Thunderbolt 3 Bridge [Alpine Ridge 2C 2015] 07:02.0 PCI bridge: Intel Corporation DSL6340 Thunderbolt 3 Bridge [Alpine Ridge 2C 2015] 08:00.0 System peripheral: Intel Corporation DSL6340 Thunderbolt 3 NHI [Alpine Ridge 2C 2015] 09:00.0 PCI bridge: Intel Corporation DSL6540 Thunderbolt 3 Bridge [Alpine Ridge 4C 2015] 0a:01.0 PCI bridge: Intel Corporation DSL6540 Thunderbolt 3 Bridge [Alpine Ridge 4C 2015] 0a:04.0 PCI bridge: Intel Corporation DSL6540 Thunderbolt 3 Bridge [Alpine Ridge 4C 2015] 0c:00.0 PCI bridge: Intel Corporation DSL6540 Thunderbolt 3 Bridge [Alpine Ridge 4C 2015] 0d:01.0 PCI bridge: Intel Corporation DSL6540 Thunderbolt 3 Bridge [Alpine Ridge 4C 2015] 0d:04.0 PCI bridge: Intel Corporation DSL6540 Thunderbolt 3 Bridge [Alpine Ridge 4C 2015] 0e:00.0 USB controller: ASMedia Technology Inc. ASM1042A USB 3.0 Host Controller --- ApportVersion: 2.20.9-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: odeda 2692 F...m pulseaudio /dev/snd/controlC0: odeda 2692 F.... pulseaudio CurrentDesktop: KDE DistroRelease: Ubuntu 18.04 HibernationDevice: RESUME=UUID=48b9dbd0-5260-48d5-bf45-a3785e48227b InstallationDate: Installed on 2017-08-17 (247 days ago) InstallationMedia: Kubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170725) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 0cf3:e007 Atheros Communications, Inc. Bus 001 Device 004: ID 0c45:6713 Microdia Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Precision 5520 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-15-generic.efi.signed root=UUID=5abbb78f-aade-4e35-b206-816fb83c5e6e ro rootflags=subvol=@ quiet splash acpi_osi=!Windows\\x202013 acpi_osi=Linux nogpumanager intel_iommu=on pcie_port_pm=off vt.handoff=1 ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15 RelatedPackageVersions: linux-restricted-modules-4.15.0-15-generic N/A linux-backports-modules-4.15.0-15-generic N/A linux-firmware 1.173 Tags: bionic Uname: Linux 4.15.0-15-generic x86_64 UpgradeStatus: Upgraded to bionic on 2018-04-08 (14 days ago) UserGroups: adm bumblebee cdrom dip docker libvirt lpadmin lxd plugdev sambashare sudo wireshark _MarkForUpload: True dmi.bios.date: 01/25/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.7.1 dmi.board.name: 0R6JFH dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.7.1:bd01/25/2018:svnDellInc.:pnPrecision5520:pvr:rvnDellInc.:rn0R6JFH:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: Precision dmi.product.name: Precision 5520 dmi.sys.vendor: Dell Inc. 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