Public bug reported:
After installing and running powertop (and powerstat), system was broken
multiple times:
- mouse became unusable because it was put to sleep without my consent.
LED turns off. Had to press button to wake up mouse but it would go to sleep
very shortly thereafter. Was able to issue a command to turn mouse power one.
- can't recover from lock screen. It acts as if someone is continually
typing a carriage return. It keeps redisplaying a message to the effect of
"Authentication Failed". No keys you type on keyboard show up as dots in the
password field. Can't use on-screen keyboard. Unplugged all USB devices.
Still persists. I was able to SSH in from another computer the second time
and after killing gsd-keyboard a couple times was able to regain control but
only because it crashed gnome-shell and logged me out. First time I think I
rebooted. System behaved ok for 5 days and then recurred. System had been
stable for months before installing powertop.
I suspect that the keyboard stack randomly gets screwed up coming out of
unauthorized auto suspend.
I believe I had run powertop and powertop --calibrate before the
problems started.
mouse and keyboard had been unplugged to reset multiple times.
system is a desktop. Was actually looking for something that could tell
me how much power was being consumed.
powertop was observed to be running, without my consent, when I logged
on by SSH. The documentation I had seen said you needed to manually
add powertop to startup scripts which I certainly did not do.
Involuntary logout can lead to data loss. I was very lucky this time that I
had apparently saved shortly before loss of control.
uninstalled powertop.
powertop:
Installed: (none)
Candidate: 2.9-0ubuntu1
Version table:
2.9-0ubuntu1 500
500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
Some info that may be of interest to others encountering the problem,
for workaround, clean up, etc.
https://askubuntu.com/questions/80638/how-to-disable-auto-power-off-of-
usb-devices-like-usb-mouse
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: powertop (not installed)
ProcVersionSignature: Ubuntu 5.3.0-46.38~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-46-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.14
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 25 10:26:27 2020
InstallationDate: Installed on 2019-05-02 (358 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
SourcePackage: powertop
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: powertop (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
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https://bugs.launchpad.net/bugs/1875041
Title:
powertop breaks lock screen, mouse, keyboard
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