Mir

Slow and sluggish system responsiveness + system-level crashes since recent updates

Bug #1223796 reported by Joseph Wakeling
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Mir
New
High
Unassigned
Unity System Compositor
New
High
Unassigned

Bug Description

Running 13.10 with unity-system-compositor enabled (current version installed: 0.0.1+13.10.20130903-0ubuntu2). No PPAs enabled, just universe.

Since the updates that arrived on 9 September system responsiveness has suddenly become very sluggish -- this manifests most particularly in keyboard input being very unresponsive, although it doesn't seem like any key-presses are actually being lost.

The system as a whole seems very slow, as if resources are being hogged somewhere, and this culminates in system-level crashes and the graphical system restarting (with my laptop and external monitors reverting to mirrored display).

The problems persist with today's updates (11 September) but vanish if unity-system-compositor is disabled.

Unfortunately due to a separate issue I'm having with apport's handling of system-level crashes (cf. bug #1223249) I haven't been able to generate effective crash reports :-(

Revision history for this message
Joseph Wakeling (webdrake) wrote :

Graphics info for my system (ThinkPad T420):

        VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
 Subsystem: Lenovo Device 21ce
 Kernel driver in use: i915

Revision history for this message
Joseph Wakeling (webdrake) wrote :

Very likely related: Bug #1223882

Changed in unity-system-compositor:
importance: Undecided → High
Changed in mir:
importance: Undecided → High
Changed in xmir:
importance: Undecided → High
Revision history for this message
Joseph Wakeling (webdrake) wrote :

Just as info on my current experience, with most recent updates installed (I'm using just regular system repositories, no PPAs and no "proposed" updates)...

I find that the degree of sluggishness of typing seems to depend on what application is being used. Typing in the Dash search box is pretty responsive, and only hitting Backspace is problematic.

Typing in GNOME Terminal (or Guake) is VERY sluggish indeed.

Typing in an application like Gedit seems to be about halfway between the two, the responsiveness for regular typing is not as good as Dash but better than terminal, but using Backspace is quite a bit more problematic than Dash.

Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1216472, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

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