Yes, there are no permissions to write to /var/log, that is so far intentional.
Another question is why are you still using pmutils? My understanding is that Ubuntu no longer uses that at all, and uses systemd power management. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1685193 Title: [17.04] systemd-udevd. Scripts started by a rule won't write to /var/log Status in systemd package in Ubuntu: Confirmed Bug description: this is rather weird problem but after upgrading to the 17.04 the pm- powersave script I start by a udev rule stopped working. After debuggin a bit I found a place that causes the error. In the /usr/lib /pm-utils/pm-functions there's the init_logfile function that called exec to redirect script's output to the /var/log/pm-powersave.log. And it fails to do so because root (under which the script is started) has no permission to write to anything under the /var/log/ Inside of that functions I added additional logging to prove that 1. the script is started under root 2. the file /var/log/pm-powersave.log exist and it has 644 permissions 3. the root can read from /var/log/* 4. /var permissions are 755, /var/log permissions are 775 If the script is started with 'sudo /usr/sbin/pm-powersave true' then it works! So what could this be? Could the apparmor prevent udevd to write to /var/log ? Temporary solution is to write to /tmp/pm-powersave.log How to reproduce: 1. add the following rule to /etc/udev/rules.d/test.rules SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="/usr/sbin/testudev true" SUBSYSTEM=="power_supply", ATTR{online}=="1", RUN+="/usr/sbin/testudev false" 2. create /usr/sbin/testudev script and make it executable #!/usr/bin/env bash logger "testudev: I'm: $(whoami)" echo test >> /var/log/testudev.log 3. Plug and unplug the power plug. Check the syslog: Apr 21 13:17:06 chrome root: testudev: I'm: root Apr 21 13:17:06 chrome systemd-udevd[23333]: Process '/usr/sbin/testudev false' failed with exit code 1. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1685193/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
