Since upgrading to Karmic I had the problem under Ubuntu that SIP calls under Twinkle would start get all chopped up every few minutes.
Turns out it’s NetworkManager that scans the wireless spectrum every two minutes for networks even if you are allready connected to some AP.
While people seem to be fixing the problem in the proper way, by making scanning interfere less with an active connection, there’s a good soul that provides patched versions of NetworkManager that gives up scanning while there’s an active connection to an AP.
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It can be integrated in any Rack based appication. Sample configuration for Ruby on Rails:
config.middleware.use Rack::Monitor, :url => '/rack_status', :watch => ['/', '/ping'] The collected statistical values can be accessed at /rack_status. It is recommended to limit access to this path with our contributed middleware Rack::Access from rack-contrib.
Sample munin output:
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In https://bugs.launchpad.net/bugs/509411 I had the problem, that locking the screen would just not work any more. It turned out that gnome-screensaver must be perpetualy runnung in the background in order to be able to lock the screen.
Also this would affect the computer not locking the screen when suspending.
It might be that Gnome/Ubuntu are user-friendly, however the bloat is starting to annoy me. Why do I need to be running 214 processes, when the only thing that is actually being used is firefox and a terminal?
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