kwin_x11doesn't stop after logout

[Mitch Golden]

I have a vintate 2001 System 76 Laptop. It is possibly of relevance that I have an nvidia 560M graphics card and am running the
nvidia proprietary driver, legacy version 304. I have installed the 14.10 plasma 5 test DVD on it.

Both my son and I have accounts. Both of us are able to log in and use the machine. However, if he uses it - and doesn't even have to do anything - when he logs out the process kwin_x11 does not end. In fact, after I log in, it continues to run and pegs one of the cores. It does not die unless killed -9.

[Mitch Golden (mgolden)]

I note that the reverse situation does not result in the same problem. If I log in and then log out, kwin_x11 does not hang. The main difference between him and me is that I am a sudoer and he is not (he is 6 years old!) and I have configured my plasma (for example to use the classic K menu) while his is more or less what is out of the box.

[Mitch Golden (mgolden)]

More info. I logged in as myself, then created a brand-new user foo. I logged out and logged in as foo. My kwin_x11 was not running, but for some reason my process was. (See image)

I did nothing else (other than open the terminal, but I know from other trialls that this is not necessary to see the kwin_x11 hang) and logged out.

Then I logged in as mgolden again. In this case both the /usr/bin/kuiserver5 and the kwin_x11 were both running - the latter pagging as always.

This demonstrates that it has nothing to do with something in my son's home directory.

[Mitch Golden (mgolden)]

Other image

[Simon Quigley (tsimonq2)]

Thank you for taking the time to report this bug and helping to make Kubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. There have been many changes in Kubuntu since that time you reported the bug and your problem may have been fixed with some of the updates. It would help us a lot if you could test it on a currently supported Kubuntu version. If you test it and it is still an issue, kindly upload the updated logs by running only once:
apport-collect 1399855

and any other logs that are relevant for this particular issue.

[Launchpad Janitor (janitor)]

[Expired for Kubuntu PPA because there has been no activity for 60 days.]