Unwanted dim, lost control over screen brightness

[Jonas G. Drange]

(Please direct me to where this bug might be more appropriate)

Turn on laptop, connected to power source, while battery is low. Using Xenial with the phone overlay enabled:

$ apt-cache policy repowerd
repowerd:
  Installed: 2016.06+16.04.20160706.1-0ubuntu1
  Candidate: 2016.06+16.04.20160706.1-0ubuntu1
  Version table:
 *** 2016.06+16.04.20160706.1-0ubuntu1 500
        500 http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu xenial/main amd64 Packages

What happens:
Screen dims to lowest brightness setting and I can't use the normal screen brightness keys to change revert the change

What should happen:
Using a power source, I do not expect _any_ automatic dimming, even if I have checked “Dim screen to save power”. Screen brightness keys should never not work.

Workaround:
If I unplug/plug the power source, the screen still dims down, but I eventually regain control over brightness through the keys

repowerd.log
http://pastebin.ubuntu.com/21257041/

[Michael Hall (mhall119)]

I have the same issue, only after it dims it turns the screen completely off. Also will not turn the screen back on when resuming from suspend, unless I was switched to vt1 before suspending.

[Alexandros Frantzis (afrantzis)]

Fix released in repowerd 2016.06+16.04.20160808-0ubuntu1. In particular the fix is to effectively disable repowerd on the desktop for now, since it interferes with existing screen management infrstructure.

If you want to try screen blanking in a unity8 session you can run it manually with: sudo /usr/sbin/repowerd .