update-manager popup consumes a lot of CPU

[Timo Aaltonen]

When update-manager has installed updates, the popup asking to reboot consumes a lot of CPU via compiz, xorg and update-manager processes, but only when the popup is not focused!

this at least on xenial

[Timo Aaltonen (tjaalton)]

xorg/compiz take 30~50% and u-m ~15% on my skylake desktop

[Launchpad Janitor (janitor)]

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

[Thomas Waldmann (tw-public)]

https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1637180 duplicate with this?

[Thomas Waldmann (tw-public)]

Ah, OP noticed the focus difference also. I can confirm!

[Brain (brain)]

The bug 1691716 is a duplicate of this one. See also more details (logs, etc.) there.

[Brain (brain)]

Possibly related? https://bugs.launchpad.net/ubuntu/+source/synaptic/+bug/355355

[Thomas Waldmann (tw-public)]

The duplicate I noted 2017-05-30 has the analysis / solution I found.

So, how long is it going to take to fix such a trivial bug and deploy it to all xenial users to finally fix this daily battery-eating annoyance?

[Brain (brain)]

Here is the analysis from Thomas: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1637180