Canonical System Image

system slow to wake up/unlock screen sluggish since the update to vivid

Bug #1466741 reported by Sebastien Bacher
50
This bug affects 11 people
Affects Status Importance Assigned to Milestone
Canonical System Image
Incomplete
Undecided
Unassigned
unity8 (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

That's not happening all the time but has been reported by several users on the list and I also hit the issue

Revision history for this message
Launchpad Janitor (janitor) wrote :

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

Changed in unity8 (Ubuntu):
status: New → Confirmed
Revision history for this message
Alan Pope 🍺🐧🐱 🦄 (popey) wrote :

This happened previously, reported as bug 1378126, maybe it's come back again?

Revision history for this message
Sebastien Bacher (seb128) wrote :

yeah, that's likely a different issue though, emails on the list suggest an high cpu load due to wifi discovery there...

Revision history for this message
Michael Zanetti (mzanetti) wrote :

It's not the same as bug 1378126. That one was because the focused app was woken up when the greeter was hidden, thus catching up with everything while the lockscreen was visible. The fix was to only wake up the app when the lockscreen was unlocked. That is still the case, I just verified.

So very likely something else triggers a cpu intensive task when the phone wakes up from deep sleep, processing things while the lockscreen is there.

Revision history for this message
Neil McPhail (njmcphail) wrote :

I'm getting this behaviour. Running "top" shown dbus-daemon consuming 33% of CPU time. Is that normal?

Revision history for this message
Pat McGowan (pat-mcgowan) wrote :

see if current update fixes this

Changed in canonical-devices-system-image:
status: New → Incomplete
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