netbook-launcher slows down after every suspend/resume cycle

Bug #308399 reported by Jeremy Visser
Affects Status Importance Assigned to Milestone
Ubuntu Netbook Remix Launcher

Bug Description

When running the netbook-launcher on my Compaq Evo N610c (which, admittedly, is not a netbook) with a Mobility Radeon 7500, performance is a little sluggish, but mostly acceptable.

However, after putting the laptop on suspend, netbook-launcher is much slower on resume. I would say it is about 30% slower. After each suspend/resume cycle, netbook-launcher gets slower and slower until it is virtually unusable. `killall netbook-launcher && netbook-launcher` restores the launcher back to full speed.

This bug is only reproducible with netbook-launcher. When doing a suspend/resume cycle while running glxgears, glxgears' framerate does not drop at all.

Also, I have an Eee 901 with Intel 945 graphics. This bug does not occur on the Eee -- it only appears to occur on the Mobility Radeon.

description: updated
Revision history for this message
Neil J. Patel (njpatel) wrote :

Right, it seems to be an issue with the radeon. The launcher has code which makes it restart on the first suspend/resume cycle (this is due to a Intel video driver bug), but then it won't resize after a resume until the unit it restarted. Maybe it would help to have an option which always restarts it?

It may be interesting to see what happens to something like, say Elisa or glxgears if you leave them running during a suspend/resume cycle, to make sure it is a driver issue.

Changed in netbook-remix-launcher:
status: New → Triaged
Revision history for this message
Jeremy Visser (jeremy-visser) wrote :

Like I pointed out in the initial post, glxgears does _not_ slow down during a suspend/resume cycle -- nor does Compiz, 3D games, or anything else. Only netbook-launcher.

Of course, I'm not against the idea that it could be a driver bug (the driver gives me enough hell already), but from my observations so far, it seems unlikely.

Revision history for this message
Bill Filler (bfiller) wrote :

are there multiple instances of netbook-launcher running after resume, or just a single instance?

Revision history for this message
Jeremy Visser (jeremy-visser) wrote :

Just a single instance. If there were multiple instances, I would have noticed while Alt+Tabbing, as netbook-launcher shows up in the Alt+Tab menu.

Revision history for this message
Neil J. Patel (njpatel) wrote :

Two icons wouldn't show up the in the tab switcher if you are running the latest metacity, as it has fixes to prevent this.

It's best to check the number of processes using top or gnome-system-monitor.

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