GUI Keyboard Event Drops

Bug #1464252 reported by Michael Titke on 2015-06-11
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
racket (Ubuntu)
Undecided
Unassigned

Bug Description

I have written a Patience Solitaire game called Open Flowers with Racket 6.1. Running in the Ubuntu GUI it sometimes does not react to keyboard shortcuts as defined in it's menu: the first keyboard shortcut is delivered and handled. The following keyboard shortcut is not seen by my application handlers and keyboard shortcuts only start working again after some display change.

When trying to debug this issue with a warning level of /debug/ for /Racket/ I get two different behaviors that seem to remain constant during runtime:
1) the bug vanishes and all events are handled and delivered perfectly
2) the bug is still there: Racket's debug messages do show events on keypresses but my application does not always receive them.

I have had similar but perhaps unrelated experiences in my current Ubuntu 15.04 with Emacs and Dash or Compiz. Most of this seems to be unreproducible. This behavior did not occur prior to my change to Ubuntu with Racket 6.1 on Mac OS X.

As soon as I have more time to investigate this I might add additional information.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: racket 6.1-4ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Jun 11 15:00:17 2015
InstallationDate: Installed on 2015-06-08 (3 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
SourcePackage: racket
UpgradeStatus: No upgrade log present (probably fresh install)

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