Public bug reported:
I have motherboard GA-Z170X-UD5 TH with 2 USB Type-C (USB
3.1/Thunderbolt 3) ports, BIOS version F20b.
Both ports are "sleeping" on cold start - I can't boot from USB device
plugged into any and both of these 2 USB Type-C ports. Ubuntu 17.04 as
of December 11 doesn't see anything (no messages in dmesg).
But magically situation changes when involve Windows 10 to the party. I
boot into Windows PE based on Windows 10 and it happily see flash drive
and my Nexus 6P connected to both ports.
After this without unplugging mentioned devices I reboot into Ubuntu and
"magic" - both flash drive and Nexus 6P work fine through these 2 USB
Type-C ports. Even though it works in Ubuntu, BIOS still doesn't see
anything.
nazar-pc ~ lspci -d ::0c03 -k
00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI
Controller (rev 31)
Subsystem: Gigabyte Technology Co., Ltd Sunrise Point-H USB 3.0 xHCI
Controller
Kernel driver in use: xhci_hcd
0b:00.0 USB controller: Intel Corporation DSL6540 USB 3.1 Controller [Alpine
Ridge]
Subsystem: Device 2222:1111
Kernel driver in use: xhci_hcd
But things are even more interesting: when I unplug either Nexus 6P or
flash drive and then plug back - they still work fine! But as soon as I
unplug both of them - Ubuntu doesn't see anything and doesn't post
anything into dmesg until I boot into Windows 10 again. Interestingly,
USB 3.1 controller disappears:
nazar-pc ~ lspci -d ::0c03 -k
00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI
Controller (rev 31)
Subsystem: Gigabyte Technology Co., Ltd Sunrise Point-H USB 3.0 xHCI
Controller
Kernel driver in use: xhci_hcd
nazar-pc ~ cat /proc/version_signature
Ubuntu 4.9.0-10.11-lowlatency 4.9.0-rc8
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: 3.1 type-c usb
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https://bugs.launchpad.net/bugs/1649039
Title:
USB 3.1 controller does weird magic: appears after Windows 10,
disappears otherwise
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