@ld2ndR, I did some more tests running the 'top' command, this is what I've found out: When the switch is off, Xorg, Firefox, Amarok or other programs use variable percentages of CPU, below the 40%. When the switch is turned on, the slowdown ocurrs and 'top' doesn't show any noticeable change on the processes' CPU usage; iwl4965/0 appears and uses about 1% of CPU, then dissapears; and after a few seconds 'ksoftirqd/0' appears and gets to the top using always percentages above 90%. If I turn the switch off after that, sometimes everything goes back to how it was before turning the switch on, and sometimes 'ksoftirqd/0' stays at the top, without changes on its 90%+ CPU usage. I googled about this 'ksoftirqd' program, and if found that "ksoftirqd is a per-cpu kernel thread that runs when the machine is under heavy soft-interrupt load." (http://www.tin.org/bin/man.cgi?section=9&topic=ksoftirqd), I don't know what that means, though :P. Also I found something related to its heavy CPU usage at http://lkml.indiana.edu/hypermail/linux/kernel/0407.3/0382.html. I hope I've given some useful hints about this problem, otherwise please tell me what else can I do.
-- Turning wireless switch on causes system to slow down https://bugs.launchpad.net/bugs/325470 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
