Thunderbolt 3 USB-C Port not "hotpluggable"

[Kyle Gochenour]

I have a Dell Precision 5510 with 16.04 Beta 2. The Thunderbolt3 port will provide power to devices, but will not recognize them when plugged in after boot.

If a Thunderbolt USB-C to Ethernet adapter is plugged in on boot, the device is recognized and usable as an ethernet connection. However if it is removed and plugged back in, it is not recognized when reconnected.

I also have a Nexus 6P Android phone with USB-C. The laptop will provide power to the phone but will not recognize it as a connected device, even when attached at boot. This may be a related issue or something else entirely, but wanted to pass along none the less.

I do not have any other USB-C/Thunderbolt adapters to test with at this time.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-18-generic 4.4.0-18.34
ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6
Uname: Linux 4.4.0-18-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: kgochenour 3218 F.... pulseaudio
CurrentDesktop: Unity
Date: Mon Apr 18 17:28:29 2016
HibernationDevice: RESUME=UUID=dbb01b4f-200c-47f8-aba9-c12e41ee127d
InstallationDate: Installed on 2016-04-10 (7 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160323)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 0c45:6713 Microdia
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. Precision 5510
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-18-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-18-generic N/A
 linux-backports-modules-4.4.0-18-generic N/A
 linux-firmware 1.157
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/25/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 01.01.19
dmi.board.name: 0W7V82
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr01.01.19:bd01/25/2016:svnDellInc.:pnPrecision5510:pvr:rvnDellInc.:rn0W7V82:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Precision 5510
dmi.sys.vendor: Dell Inc.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.6 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc4-wily/

[Kyle Gochenour (kyle-gochenour)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

>This was a fresh install on 16.04 Beta2. I had first installed 14.04 but had the same issue. Tried 15.06, still ahd same issue, then tried 16.04, still same issue.

I tested '4.6.0-040600rc4-generic' and I am still experiencing the same issue.

[macat (attila-maczak)]

I can confirm I have / had the same issue with these kernels: 4.4, 4.8, 4.10. Also using Ubuntu 16.04.

[FireBurn (fireburn)]

A patch https://patchwork.kernel.org/patch/10212201/ is going to fix this issue properly, it should be backported to older kernels too, so hopefully going forward your USB-C connectors will work correctly, it also fixes NVMe drives disappearing after suspend too