JDK-8058197 : AWT fails on generic non-reparenting window managers
- Type: Bug
- Component: client-libs
- Sub-Component: java.awt
- Affected Version: 8u20
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- OS: linux
- CPU: x86
- Submitted: 2014-09-10
- Updated: 2017-05-17
- Resolved: 2014-10-22
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Resolved: Release in which this issue/RFE has been resolved.
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Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
| JDK 8 | JDK 9 |
|---|---|
8u40Fixed  |
9 b38Fixed |
Description
FULL PRODUCT VERSION :
All versions of the JVM
ADDITIONAL OS VERSION INFORMATION :
Any OS that uses the X window system with a non-reparenting window manager (e.g. tiling window managers like xmonad or dwm)
A DESCRIPTION OF THE PROBLEM :
Copied from the AWT-dev mailing list at http://mail.openjdk.java.net/pipermail/awt-dev/2014-September/008479.html and http://mail.openjdk.java.net/pipermail/awt-dev/2014-September/008477.html
AWT currently includes a (very incomplete) hard-coded list of
non-reparenting window managers. To work around this, many distributions
patch openjdk to add support for this to be controlled by an environment
variable (_JAVA_AWT_WM_NONREPARENTING), see for instance
(https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=508650 or
https://projects.archlinux.org/svntogit/packages.git/plain/trunk/openjdk7_nonreparenting-wm.diff?h=packages/java7-openjdk)
A more minimal implementation than the above is to add an extra clause
to isNonReparentingWM in XWM.java something along the lines of
(XWM.getWMID() == XWM.OTHER_WM &&
XToolkit.getEnv("_JAVA_AWT_WM_NONREPARENTING") != null) which avoids the
need to define a new WM.
This change seems like it would have minimal side effects but greatly
improve usability (a quick google search for java tiling window manager
reveals a lot of pain surrounding this issue).
REPRODUCIBILITY :
This bug can be reproduced always.
CUSTOMER SUBMITTED WORKAROUND :
Copied from the AWT-dev mailing list at http://mail.openjdk.java.net/pipermail/awt-dev/2014-September/008479.html and http://mail.openjdk.java.net/pipermail/awt-dev/2014-September/008477.html
Many distributions
patch openjdk to add support for this to be controlled by an environment
variable (_JAVA_AWT_WM_NONREPARENTING), see for instance
(https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=508650 or
https://projects.archlinux.org/svntogit/packages.git/plain/trunk/openjdk7_nonreparenting-wm.diff?h=packages/java7-openjdk)