On Friday 25 July 2014 05:45 PM, Stefanie Dargel wrote:
Dear Maintainers,I'm plagued by a bug that forces me to reboot my laptop frequently. I hope I'm filing the bug to the right package, feel free to reassign. The problem happens when I undock the laptop, which causes the laptop to disconnect from the AC power and the network simultanously. What happens is that the panel freezes. I.e. it becomes unresponsive to mouse clicks, so I can't use it to configure networks, switch windows, launch applications, i.e. the standard stuff one has it there to do. I can use other features such as Alt-TABbing through windows, and the mouse and keyboard can be used on other apps.
At times I have run into this temporary problem. I haven't spent time nailing where the problem is, but from the symptoms it looks to be a problem where the kernel goes briefly into blocking mode.
In this case, it could be the name resolver. The moment the network is out, anything that was depending on name resolution has to wait. The reason being because during the state change (where the network was lost) there is no new record to look at.
The same may happen when you have a network device mapped. The undock event terminated the current network, and initiated a new network request. Depending on the time it takes, till then, the kernel has no choice but to go into wait.
Again, this is something I just have guessed so far looking at similar behavior on my box. I have not spent time gathering the data yet.
-- Given the large number of mailing lists I follow, I request you to CC me in replies for quicker response