Crashes with KDE about notion HOT 11 CLOSED

Interesting, from the backtrace it seems to crash inside the XQueryExtension while getting the Query font with XLoadQueryFont in defont_get_text_width. Pretty surprising this is different between running under KDE Plasma compared to running under other DE's. Have you verified it works without KDE Plasma?

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Did you build Notion from source or get some package? Which version/package exactly?

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I've been able to reproduce this with distribution packages

• notion 3+2015061300-2+b1 in Debian
• notion 3+2017050501-1 in Kubuntu cosmic.

The backtrace I attched to this bug comes the Debian package 3+2015061300-2+b1 rebuilt with debugging information enabled, and with stripping and optimization disabled (and with liblua5.2-0-dbg installed)

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Interesting. I must admit I'm not familiar with KDE at all, so I'd appreciate some help. I'm also running Debian, and installed Plasma and kdm. How do I configure KDE/Plasma to use Notion as a window manager?

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So what I've been doing is running killall kwin_x11 from a terminal, and then starting notion from a terminal (typically one of my text terminals, so that I can debug without using my X desktop), however if you really want to replace the window manager by default (when it's not yet known to give you a working desktop), you need to set the KDEWM environment variable to the path of your window manager's binary. This is typically done by adding a shell script in ~/.config/plasma-workspace/env.

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Note that once notion no longer crashes, you probably need a configuration of window hints that's similar to this i3 confguration in order to actually get something usable.

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OK, so the backtrace is a bit of a red herring, because the error is returned by the X server asynchronously, so the trace doesn't point to the code that performs the 'bad' request, but to the code that observes the error.

It appears notion tries to grab some keys from the keybindings, but those have already been bound (presumably by some KDE component).

Instead of crashing, I think we should report on the bindings that failed to register. In the branch at https://github.com/raboof/notion/pull/new/warnOnBindFailures I changed the kill to a warning, but I haven't figured out a way to report which key couldn't be bound yet.

One obvious 'problem' is that now the Plasma 'Desktop' is displayed as a window. I guess we'd want to bind it to the root window of any non-tiled workspaces instead?

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That sounds like a good plan.

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I updated the branch to only log the failures, could you have a look?

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That works. Now to figure out how to lay out KDE's stuff.

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