It seems 4.18.0-18 fixes the issue.
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https://bugs.launchpad.net/bugs/1820811
Title:
Thunderbolt3 dock freezes X on hotplug when used with external
displays
Status in
Yes, hang re-occurs regardless of whether the device was plugged in at
boot or not.
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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/1820811
Title:
Thunderbolt3 dock freezes X on hotplug
Sorry for the delayed followup, but if your machine is booted with it
plugged in, are you then able to unplug and re-plug the device without
issue?
Or does the hang re-occur regardless of whether the device was plugged
in at boot or not?
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You received this bug notification because you are a
> With the affected kernel versions, does the hang still occur if the
dock is connected before booting?
No, the hang only occurs when I plug the cable to my laptop in running
OS.
> That is, with your computer shut off, plug in the dock and then boot
up. Does the computer hang after booting?
No,
We are trying to determine if this bug is related to bug #1819924.
With the affected kernel versions, does the hang still occur if the dock
is connected before booting?
That is, with your computer shut off, plug in the dock and then boot up.
Does the computer hang after booting?
If not, are you
Would it be possible for you to do a kernel bisection?
First, find the first good -rc kernel and the last bad -rc kernel from
http://kernel.ubuntu.com/~kernel-ppa/mainline/
Then,
$ sudo apt build-dep linux
$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
$ cd linux
$
apport information
** Tags added: apport-collected bionic
** Description changed:
- This bug is very similar to https://bugs.launchpad.net/dell-
- sputnik/+bug/1752165 and has the same steps to reproduce, but it's not
- related to nvidia drivers. I have Lenovo Thinkpad T480s connected to a
-
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