Public bug reported:

Ubuntu 16.04 on MacBookPro10,1.
Kernel 4.4.0-45-generic

Booted without anything connected.
[   10.552192] Call Trace:
[   10.552197]  [<ffffffff813f1fe3>] dump_stack+0x63/0x90
[   10.552200]  [<ffffffff81081212>] warn_slowpath_common+0x82/0xc0
[   10.552201]  [<ffffffff810812ac>] warn_slowpath_fmt+0x5c/0x80
[   10.552202] thunderbolt 0000:07:00.0: resetting error on 0:b.
[   10.552204]  [<ffffffffc049114f>] tb_wait_for_port+0x34f/0x3e0 [thunderbolt]
[   10.552206]  [<ffffffffc04904cd>] tb_scan_port+0x5d/0x1a0 [thunderbolt]
[   10.552208]  [<ffffffffc04907c2>] tb_handle_hotplug+0x1b2/0x320 [thunderbolt]
[   10.552210]  [<ffffffff8109a3e5>] process_one_work+0x165/0x480
[   10.552212]  [<ffffffff8109a74b>] worker_thread+0x4b/0x4c0
[   10.552214]  [<ffffffff8109a700>] ? process_one_work+0x480/0x480
[   10.552215]  [<ffffffff8109a700>] ? process_one_work+0x480/0x480
[   10.552217]  [<ffffffff810a0928>] kthread+0xd8/0xf0
[   10.552218]  [<ffffffff810a0850>] ? kthread_create_on_node+0x1e0/0x1e0
[   10.552221]  [<ffffffff81831c4f>] ret_from_fork+0x3f/0x70
[   10.552222]  [<ffffffff810a0850>] ? kthread_create_on_node+0x1e0/0x1e0
[   10.552223] ---[ end trace 6eefd0c78014b083 ]---

Attached full dmesg_boot.txt.

Thunderbolt works (tested with thunderbolt-ethernet-adapter).

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

** Attachment added: "dmesg_boot.txt"
   
https://bugs.launchpad.net/bugs/1635875/+attachment/4765492/+files/dmesg_boot.txt

** Description changed:

  Ubuntu 16.04 on MacBookPro10,1.
+ Kernel 4.4.0-45-generic
  
- Booted without anything connected. 
+ Booted without anything connected.
  [   10.552192] Call Trace:
  [   10.552197]  [<ffffffff813f1fe3>] dump_stack+0x63/0x90
  [   10.552200]  [<ffffffff81081212>] warn_slowpath_common+0x82/0xc0
  [   10.552201]  [<ffffffff810812ac>] warn_slowpath_fmt+0x5c/0x80
  [   10.552202] thunderbolt 0000:07:00.0: resetting error on 0:b.
  [   10.552204]  [<ffffffffc049114f>] tb_wait_for_port+0x34f/0x3e0 
[thunderbolt]
  [   10.552206]  [<ffffffffc04904cd>] tb_scan_port+0x5d/0x1a0 [thunderbolt]
  [   10.552208]  [<ffffffffc04907c2>] tb_handle_hotplug+0x1b2/0x320 
[thunderbolt]
  [   10.552210]  [<ffffffff8109a3e5>] process_one_work+0x165/0x480
  [   10.552212]  [<ffffffff8109a74b>] worker_thread+0x4b/0x4c0
  [   10.552214]  [<ffffffff8109a700>] ? process_one_work+0x480/0x480
  [   10.552215]  [<ffffffff8109a700>] ? process_one_work+0x480/0x480
  [   10.552217]  [<ffffffff810a0928>] kthread+0xd8/0xf0
  [   10.552218]  [<ffffffff810a0850>] ? kthread_create_on_node+0x1e0/0x1e0
  [   10.552221]  [<ffffffff81831c4f>] ret_from_fork+0x3f/0x70
  [   10.552222]  [<ffffffff810a0850>] ? kthread_create_on_node+0x1e0/0x1e0
  [   10.552223] ---[ end trace 6eefd0c78014b083 ]---
  
  Attached full dmesg_boot.txt.
  
  Thunderbolt works (tested with thunderbolt-ethernet-adapter).

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https://bugs.launchpad.net/bugs/1635875

Title:
  Call-trace about thunderbolt when booting Ubuntu on Macbook

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