Public bug reported:
Until Kernel 4.4.0-166-generic everything was working fine, but since
then an update (maybe CVE-2019-14615 ?) made it impossible to log into
my laptop.
Symptom: after an unusual long boot time, the login screen appears. It
is not possible to type my password. It is not possible to move the
mouse. After screen timeout the screen goes into powersave. Hitting any
key or moving the mouse doesn't wake it up.
Observed on Kernels:
* 4.4.0-173-generic
* 4.15.0-74-generic
* 4.15.0-76-generic
To be able to file this bug, I have SSHed into my laptop.
To be able to use my laptop, I need to boot into the older Kernel 4.4.0-166
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.15.0-76-generic 4.15.0-76.86~16.04.1
ProcVersionSignature: Ubuntu 4.15.0-76.86~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-76-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.21
Architecture: amd64
Date: Sun Feb 9 16:54:28 2020
EcryptfsInUse: Yes
InstallationDate: Installed on 2012-03-24 (2877 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
SourcePackage: linux-signed-hwe
UpgradeStatus: Upgraded to xenial on 2019-04-14 (300 days ago)
** Affects: linux-signed-hwe (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1862525
Title:
Screen and keyboard frozen on login on Lenovo Thinkpad X220
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