USB Disconnects using Dell WD-15

[Robert Lake]

The USB hub in the Dell WD-15 docking station is continuously reset/disconnects causing all attached devices to also disconnect. The following extract from dmesg output is from latest reset. I haven't been able to find a pattern yet. Some days this happens more frequently than others.

[19748.939552] usb 4-1: USB disconnect, device number 102
[19748.939555] usb 4-1.2: USB disconnect, device number 103
[19749.275615] usb 4-1: new SuperSpeed USB device number 104 using xhci_hcd
[19749.295850] usb 4-1: New USB device found, idVendor=0424, idProduct=5537
[19749.295856] usb 4-1: New USB device strings: Mfr=2, Product=3, SerialNumber=0
[19749.295860] usb 4-1: Product: USB5537B
[19749.295863] usb 4-1: Manufacturer: SMSC
[19749.296856] hub 4-1:1.0: USB hub found
[19749.296884] hub 4-1:1.0: 7 ports detected
[19749.583660] usb 4-1.2: new SuperSpeed USB device number 105 using xhci_hcd
[19749.604242] usb 4-1.2: New USB device found, idVendor=0bda, idProduct=8153
[19749.604247] usb 4-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=6
[19749.604250] usb 4-1.2: Product: USB 10/100/1000 LAN
[19749.604253] usb 4-1.2: Manufacturer: Realtek
[19749.604255] usb 4-1.2: SerialNumber: 000001000000
[19749.687657] usb 4-1.2: reset SuperSpeed USB device number 105 using xhci_hcd
[19749.710323] r8152 4-1.2:1.0 (unnamed net_device) (uninitialized): Using pass-thru MAC addr 84:7b:eb:4e:12:9e
[19749.764182] r8152 4-1.2:1.0 eth0: v1.08.6
[19750.794432] r8152 4-1.2:1.0 enx847beb4e129e: renamed from eth0
[19750.846642] IPv6: ADDRCONF(NETDEV_UP): enx847beb4e129e: link is not ready
[19750.873917] IPv6: ADDRCONF(NETDEV_UP): enx847beb4e129e: link is not ready
[19753.301768] IPv6: ADDRCONF(NETDEV_CHANGE): enx847beb4e129e: link becomes ready

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.8.0-46-generic 4.8.0-46.49~16.04.1
ProcVersionSignature: Ubuntu 4.8.0-46.49~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-46-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: GNOME-Flashback:Unity
Date: Mon Apr 17 15:26:54 2017
InstallationDate: Installed on 2016-06-07 (314 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: linux-hwe
UpgradeStatus: No upgrade log present (probably fresh install)

[Robert Lake (sikpigs)]

My complete dmesg output from boot earlier today.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Yuriy Vidineev (adeptg)]

I have the same issue with Dell XPS13 9360 and Dell DS1000 docking station (it's a WD-15 in different form-factor). I've tried all possible kernels including 4.12-rc1 and still have to reconnect dock few times per day (some day more often than another - I can't find a pattern too)

[Yuriy Vidineev (adeptg)]

I've heard that there is some issue with Wi-Fi power level on Dell laptops. I'll try to disable Wi-Fi when connected to docking station and see if it helps.

[Yuriy Vidineev (adeptg)]

Looks like 4.14 kernel fixes issue for me