Ubuntu
kdeplasma-addons package

plasma-widget-lancelot lacks transparent background support - Kubuntu Karmic

Bug #408235 reported by J. M. Todaro on 2009-08-03

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	kdeplasma-addons (Ubuntu)	Fix Released	Undecided	Alessandro Ghersi

Bug Description

Binary package hint: plasma-widget-lancelot

Hi! I'm using Kubuntu Karmic (plasma-widget-lancelot 4:4.2.98-0ubuntu2)

Lancelot should now support background transparency, however, all of my lancelot backgrounds display opaque. I found a post from July 18 in which the author writes:

"Hi,

I've received this question a couple of times lately. (even with distro-provided-packages)

When compiling Lancelot, you should have the libXcomposite, libXrender and libXdamage *development* files. If you don't have them, compositing is not able to be compiled and is thus disabled.

Cheers"

I suspect this could be the cause. Quoted message comes from - http://forum.kde.org/viewtopic.php?f=67&t=62507&start=0

Related branches

lp:~kubuntu-packagers/kubuntu-packaging/kdeplasma-addons

lp:ubuntu/lucid/kdeplasma-addons

Revision history for this message

Jonathan Thomas (echidnaman) wrote on 2009-08-03:

We compile with all three, for the record.

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J. M. Todaro (jmtodaro) wrote on 2009-08-04:

Just to clarify, do you compile with the *development* files for all three? I cannot find any other reason this would not be displaying properly with compositing enabled in 4.2.98.

To replicate this bug:
-Make sure compositing is enabled (Desktop Effects)
-Set Plasma theme to "Air"
-Open Lancelot menu.

On my system, I'm seeing a solid black border around the edge, rather than the intended soft shadow. This indicates it is trying to display a file with transparency, however compositing ability is not available.

Revision history for this message

Jonathan Thomas (echidnaman) wrote on 2009-08-04:

Yes, these are the development packages we are compiling against.

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Saleel Velankar (sealv) wrote on 2009-08-05:

Bug is replicated on this machine using kde 4.3 from the backports repo. Can submit screenshots if needed.

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Gobnuts (gobnuts) wrote on 2009-08-09:

lancelot no-compositing Edit (181.9 KiB, image/png)

I can confirm this under Jaunty with KDE 4.3.

I asked Ivan (the creator) on identica about the black border around lancelot and he said it
"that means that the package is compiled without compositing support."

Which I hope, I hereby did, hoping it will be fixed. I'll add a screenshot for good measure

Revision history for this message

Gobnuts (gobnuts) wrote on 2009-08-09:

God, I sound like an idiot....

Ivan told me to contact the package maintainers about this, which I hope, I hereby did.

On a side note, launchpad could really use an edit function.

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js (solard3ity-deactivatedaccount-deactivatedaccount) wrote on 2009-08-09:

same here, got a black border and no transparent lancelot ...
What do I have to configure in the "src" to get it right?? I'll just apt-get source kdeplasma-addons and try to compile it new..

Revision history for this message

Khashayar Naderehvandi (khashayar) wrote on 2009-08-15:

debdiff against kdeplasma-addons-4.3.0-0ubuntu3 that adds additional dependencies to debian/control Edit (1.3 KiB, text/plain)

Attaching debdiff that solves the issue.
The patch doesn't change any source code, it only adds libxcomposite-dev, libxrender-dev, libxdamage-dev to debian/control.

It solves the problem here with no regressions.

If anyone wants to test it, packages are to be found here: https://launchpad.net/~khashayar/+archive/builder
(But please, if you add this PPA to your sources.list, only do so temporarily).

Changed in kdeplasma-addons (Ubuntu):
status:	New → Confirmed

Revision history for this message

Saleel Velankar (sealv) wrote on 2009-08-16:

snapshot11.png Edit (1.0 MiB, image/png)

Khashayar Naderehvandi's packages work like a charm; added screenshot for proof.

Alessandro Ghersi (alessandro-ghersi) on 2009-08-18

Changed in kdeplasma-addons (Ubuntu):
assignee:	nobody → Alessandro Ghersi (alessandro-ghersi)

Revision history for this message

Alessandro Ghersi (alessandro-ghersi) wrote on 2009-08-19:

#10

Fix committed for next packaging

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Alessandro Ghersi (alessandro-ghersi) wrote on 2009-08-19:

#11

Forgot...thanks to Khashayar Naderehvandi :)

Changed in kdeplasma-addons (Ubuntu):
status:	Confirmed → Fix Committed

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Gobnuts (gobnuts) wrote on 2009-08-26:

#12

@Alessandro: Will this be backported to Jaunty as well?

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Alessandro Ghersi (alessandro-ghersi) wrote on 2009-08-26:

#13

Yes.

Revision history for this message

Launchpad Janitor (janitor) wrote on 2009-09-01:

#14

This bug was fixed in the package kdeplasma-addons - 4:4.3.1-0ubuntu1

---------------
kdeplasma-addons (4:4.3.1-0ubuntu1) karmic; urgency=low

  [ Christian Mangold ]
  * New upstream release
  * Bump version of KDE build-deps to 4.3.1

  [Alessandro Ghersi]
  * Add libxcomposite-dev, libxrender-dev and libxdamage-dev to build-deps
    to build compositing support for Lancelot. (LP: #408235)
    (Thanks to Khashayar Naderehvandi)

[ Harald Sitter ]
* Fix armel build using kubuntu_01_fix_armel_build.diff

-- Harald Sitter <email address hidden> Sun, 30 Aug 2009 20:11:55 +0200