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Last year I found a way to debug what is capturing keyboard shortcuts, by sending X events using xdotool. Now, I have a similar problem where using the Ctrl-Alt-Left in IntelliJ isn't doing anything, so I suspect something is holding on to it.

This time, though, nothing is printing in the logs!

I also tried with other keycombos that were global (such as Win+a, which opens the applications menu), but they produced no log entries either.

What has changed from Ubuntu 17.04 to 18.04 that disables the log output, and how can I enable the log output? There are other entries in the logs, mind you :)

You can try out my debugging steps using this gist, like this:

~/bin/debug-x-shortcut Super_R+a

  • Same problem with Ctrl+Alt+Left. I see the dump in .local/share/xorg/Xorg.0.log however I cannot find an offending app. – Greg Dan May 8 '18 at 14:18
  • Any progress on this? In my case your debug script output look like this gist.github.com/gregd/b63769bbf5c2ca0695c6e024c91f8f94 – Greg Dan May 10 '18 at 8:50
  • Sorry, but no. Haven't looked since posting, though. Might need to check with official Ubuntu forums/bug trackers, but not sure what "the bug" is. – oligofren May 10 '18 at 9:47

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