Compiz ignores _MOTIF_WM_HINTS set from xprop

Bug #1702297 reported by Alberts Muktupāvels on 2017-07-04
This bug affects 3 people
Affects Status Importance Assigned to Milestone
Alberts Muktupāvels
compiz (Ubuntu)
Alberts Muktupāvels
Nominated for Xenial by Marco Trevisan (Treviño)

Bug Description


Trying to remove and/or re-add window decorations using xprop does not work. Compiz expects that _MOTIF_WM_HINTS property type is _MOTIF_WM_HINTS while xprop use CARDINAL type.

[Test Case]

xprop -f _MOTIF_WM_HINTS 32c -set _MOTIF_WM_HINTS "0x2, 0x0, 0x0, 0x0, 0x0"

Use this command from terminal and then select window from which to remove decorations. Decorations should disappear from selected window.

To re-add decorations use this command:
xprop -f _MOTIF_WM_HINTS 32c -set _MOTIF_WM_HINTS "0x2, 0x0, 0x1, 0x0, 0x0"

[Regression Potential]

Metacity and Mutter also use AnyPropertyType when reading _MOTIF_WM_HINTS property so I guess there should be no regressions.

Related branches

summary: - Compiz ignores _MOTIF_WM_HINTS
+ Compiz ignores _MOTIF_WM_HINTS set from xprop
kenn (whatnext) wrote :

I am waiting for that patch to have been merged but I think it's not been released yet.

It is merged and should be available in 17.10, but it is still not available / merged in 16.04...

Changed in compiz:
status: New → Fix Committed
Changed in compiz (Ubuntu):
status: New → Fix Released
no longer affects: compiz/xenial
Changed in compiz:
importance: Undecided → Medium
Changed in compiz (Ubuntu):
importance: Undecided → High
importance: High → Medium
Changed in compiz:
assignee: nobody → Alberts Muktupāvels (muktupavels)
Changed in compiz (Ubuntu):
assignee: nobody → Alberts Muktupāvels (muktupavels)

Hello Alberts, or anyone else affected,

Accepted compiz into xenial-proposed. The package will build now and be available at in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See for documentation on how to enable and use -proposed.Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-xenial to verification-done-xenial. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-xenial. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at . Thank you in advance!

Changed in compiz (Ubuntu Xenial):
status: New → Fix Committed
tags: added: verification-needed verification-needed-xenial
John Lenton (chipaca) wrote :

Verified that 1: fixes the issue on xenial: before upgrading, I confirmed xprop didn't disable the decorations on an xterm window; after upgrading, it did.

Thank you!

tags: added: verification-done verification-done-xenial
removed: verification-needed verification-needed-xenial
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package compiz - 1:

compiz (1: xenial; urgency=medium

  [ Eleni Maria Stea ]
  * Added option to disable blend in grid plugin (LP: #1700859)
  * Move: add options for showing only the window shape (filled or not)
    (LP: #1700859)

  [ Alberts Muktupāvels ]
  * Ensure that surfaces used by metacity theme have device scale set to
    1 . (LP: #1530277) (LP: #1530277)
  * Use AnyPropertyType when getting _MOTIF_WM_HINTS property. (LP:

  [ Martin Wimpress ]
  * mate: Avoid artefacts of Windows Thumbnail Previews (LP: #1606369)

  [ Marco Trevisan (Treviño) ]
  * move: damage all the border area in outline mode and ignore
    transparent colors (LP: #1700859)
  * grid: ignore alpha in colors when not blending, and fix animations
    (LP: #1700859)
  * resize: add support for disabling transparency and avoid over-
    damaging in outline mode (LP: #1700859)
  * Screen: add averageColor to get the current desktop average color
  * unity-lowgfx.ini: remove unsupported unity option

 -- Marco Trevisan (Treviño) <> Thu, 16 Nov 2017 23:00:54 +0000

Changed in compiz (Ubuntu Xenial):
status: Fix Committed → Fix Released

The verification of the Stable Release Update for compiz has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

Dmitry Shachnev (mitya57) wrote :

Compiz was released today, which includes this fix.

Changed in compiz:
status: Fix Committed → Fix Released
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