This bug is probably a duplicate of bug 1745349 in Xenial.
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https://bugs.launchpad.net/bugs/1746418
Title:
System freezes when starting Xorg after installing linux-
image-4.13.0-32-generic
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Artful:
In Progress
Bug description:
My laptop (Lenovo T440) freezes when starting Xorg (lightdm) only
after installing the latest ubuntu kernel for 17.10, linux-
image-4.13.0-32-generic.
Am running Xorg instead of MIR due to MIR crashing when I initially
upgraded from 17.04 to 17.10, but that's a different problem for a
different day. It's been running with Xorg stably for at least 2-3
months.
If I boot with the previous kernel version on my /boot (linux-
image-4.13.0-25-generic), everything works fine.
If I boot with the latest mainline kernel from the Ubuntu mainline
repo (4.15.0), everything works.
Using grub's option to run "Recovery Mode" for the 4.13.0-32 kernel, I
am able to use the CLI and access the encrypted root filesystem, which
is how I generated the apport repo that's attached. It's only when
telling it to continue Normal booting that it freezes, which is why I
suspect the problem of being Xorg.
When the system freezes, the fan starts to spin up. I cannot switch
virtual consoles using CTRL-ALT-F{1-7}. CTRL-ALT-DEL pressed
repeatedly doesn't do anything. To reboot, I have to hold the power
button until the system powers off.
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