xfce4-power-manager crashes

[ZhiFeng Hu]

xfce4-power-manager crashes

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: xfce4-power-manager 1.4.4-4ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-16.19-lowlatency 4.2.3
Uname: Linux 4.2.0-16-lowlatency x86_64
ApportVersion: 2.19.1-0ubuntu3
Architecture: amd64
Date: Wed Oct 21 07:36:35 2015
InstallationDate: Installed on 2015-09-14 (36 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
SourcePackage: xfce4-power-manager
UpgradeStatus: Upgraded to wily on 2015-09-28 (22 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Alex Moldovan (alexmoldovan)]

I can't add the crash report with ubuntu-bug /var/crash/_usr_lib_upower_upowerd.0.crash so I'm attaching it to the report here.

[Dirk Hagedorn (hgdrn)]

I am using XDMCP (via VcXsrv with Win7) on my Xubuntu 14.04 machine and noticed that the battery indicator vanished since last week or so. The reason seems to be a crashing xfce4-power-manager (--version says ... for Xfce 1.2.0).

I restarted it with --debug and the following lines are always the last before it crashes again, (don't know exactly what that means):

TRACE[xfpm-backlight.c:104] xfpm_backlight_dim_brightness(): Current brightness level before dimming : 100, new 80
Error executing command as another user: Not authorized

This incident has been reported.
The program 'xfce4-power-manager' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
  (Details: serial 722 error_code 8 request_code 133 minor_code 8)

[Theo Linkspfeifer (lastonestanding)]

Dirk, please retest with Xubuntu 16.04, or better with 18.04.

If the bug remains, please open a new report.

Closing this old report.