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If you accidentally (or not) click/hold and drag the left mouse button from the inner area ("client" or "any empty area") in a KDE/QT window, it starts to be dragged/moved along, but it's not dropped when you release the button, unlike the behavior with GTK windows (at least GTK2, I guess). You got to press "enter" or "esc", I guess.
Presumably that doesn't happen under KDE proper/kwin, maybe not even with other window managers, but I didn't...
At least in Ubuntu wily, it doesn't seem to allow you to chose the default application to open a file type. You try to do it, but it "magically" restores the previous default association before your eyes. Even if you chanced the config file, somehow. (I'm assuming it's mimeapps.lst, but I'm not sure. It seems that it's cool nowadays to have cryptic, hidden config files, avoiding to mention them unless strictly necessary, pretending it's all magic and config files don't exist)
It's very sporadic, somewhat rare, so I won't really open a thread on the forums themselves, but I'll just collect links and snippets here hoping there's some way to fix it, if it doesn't get fixed "by itself"/by systemd/debian developers first.
I have Mate desktop and Slim installed:
halt_cmd /sbin/systemctl poweroff -i
reboot_cmd /sbin/systemctl reboot -i
like this, when I request shutdown all applications exit and then slim restart
I noticed that there was no longer the "extract" context submenu for zip files after one of the last updates. Then I went to check the ".desktop" files on /usr/share/kde4, and noticed that they had an editing mistake in the mimetype line:
I have just lost my backup data thanks to STABLE versions of stupid GUI "xfburn".
Of course it was mainly my fault I didn't check if it was written okay or not and just put that away then removed source files from hard disk. Im now wondering what's on that DVD disc, some space looks to be non-empty but mounted disc is empty. Quest for future. Luckily, the data wasn't that way important so that's why I didn't check it, in oppose to other discs I've written that day.