[Gambas-user] IconView bug on LXDE 0.5.11

[Willy Raets]

On Sat, 2013-04-06 at 02:45 +0200, Willy Raets wrote:
> On Sat, 2013-04-06 at 01:12 +0200, Benoît Minisini wrote:
> > Le 03/04/2013 17:05, Willy Raets a écrit :
> > > On Mon, 2013-03-18 at 19:30 +0100, Willy Raets wrote:
> > >> When running a Gambas application using gb.qt4 on Lubuntu 12.10 with
> > >> LXDE 0.5.11 IconView shows black.
> > >> Using gb.gui or gb.gtk poses no problems, IconView shows normal.
> > >>
> > >> Problem is ONLY with LXDE 0.5.11, previous version of Lubuntu 12.04 with
> > >> LXDE 0.5.8 shows the IconView normal. So does LXDE 0.5.10 on a Fedora
> > >> box. Tested Xubuntu 12.10 with Xfce 0.4.10 as well, no problem there.
> > >>
> > >> On LXDE 0.5.11 I tested with both Gambas 3.4 and Gambas 3.4 rev. #5582
> > >>
> > >> Attached a source code archive with an example.
> > >>
> > >> System specification of the Lubuntu 12.10 LXDE 0.5.10 (in VM) are:
> > >> [System]
> > >> OperatingSystem=Linux
> > >> Kernel=3.5.0-25-generic
> > >> Architecture=x86
> > >> Distribution=Ubuntu 12.10
> > >> Desktop=LXDE
> > >> Theme=QGtk
> > >> Language=en_US.UTF-8
> > >> Memory=1003M
> > >>
> > >> [Libraries]
> > >> GStreamer=libgstreamer-0.10.so.0.30.0
> > >> GTK+=libgtk-x11-2.0.so.0.2400.13
> > >> Poppler=libpoppler.so.28.0.0
> > >> Qt4=libQtCore.so.4.8.3
> > >> SDL=libSDL-1.2.so.0.11.4
> > >>
> > >> Note: A user on Lubuntu 12.10 discovered this problem in one of my
> > >> applications and he wasn't running in VM, so it is not VM releated.
> > >
> > > This problem with IconView occured on Lubuntu 12.10 - LXDE 0.5.12 first.
> > > Now recently I had a bug report from a guy who recently installed
> > > Lubuntu 12.04 - LXDE 0.5.8 with the same problem -> IconView is blacked
> > > out.
> > >
> > > Strangely enought I have two Lubuntu 12.04 - LXDE 0.5.8 installed where
> > > the problem doesn't occur. They where installed 1/2 year ago and kept
> > > updated.
> > >
> > > I have two recently installs of Lubuntu 12.04 - LXDE 0.5.8 on end user
> > > systems where the problem occurs as well.
> > >
> > > So it seems all recent Lubuntu installs as of 12.04 have the problem
> > > with the IconView.
> > >
> > > So I made a little IconView tester to test the troubled Lubuntu 12.10.
> > > When running it with gb.qt4 IconView blacks out
> > > When running it with gb.gtk IconView works as expected
> > >
> > > Next I tested on a troubled Lubuntu 12.04 to run the gtk version of
> > > IconView and it works, the qt4 version doesn't.
> > >
> > > So the problem seems to be gb.qt4 related.
> > > Themes on ALL Lubuntu systems is QGtk.(those working and those not
> > > working with gb.gt4 IconViewTest)
> > >
> > > Tested with Gambas 3.4.0 and 3.4.0 both rev#5598 and rev#5608
> > >
> > > Attached:
> > > - Screenshot with gb.gtk used on Lubuntu 12.10
> > > - Screenshot with gb.qt4 used on Lubuntu 12.10
> > > - Source Archive of IconViewTester
> > >
> > > Source Archive is set to gb.gtk (the working version)
> > > Run once with gb.gtk next set to component gb.qt4 and run again to see
> > > the difference.
> > >
> > > Note: All my Lubuntu 12.04 that have been installed over 1/2 a year ago
> > > work with both versions
> > > All recently installed Lubuntu 12.04 work with only gb.gtk version.
> > >
> > > If more information is needed just let me know.
> > > The Lubuntu 12.10 specification are in previous post (see above).
> > >
> > > The application I have this problem in is using gb.qt4.webkit so it has
> > > to use gb.qt4 (since there is no gb.gtk.webkit -> why not actually?)
> > 
> > Lack of time to do it...
> > 
> > > else I could simply solve my problem by switching to gb.gtk
> > >
> > > Thanks..
> > >
> > >
> > 
> > I can't reproduce the problem, but it must come from the theme. Which 
> > GTK+ theme do you use on the system you get the black background, and on 
> > the system you don't get it?
> > 
> ALL themes are the system defaults. 
> 
> On all my installations I leave default theme, never change it (except
> for the Lubuntu 12.10 on your request)
> 
> Tried changing the theme on the Lubuntu 12.10 with the other default
> available themes. But that doesn't change the problem and IDE always
> says Theme=QGtk
> 
> System 1: Lubuntu 12.04 - LXDE 0.5.8 - Gambas 3.4.0 - QGtk (default)
> System 2: Lubuntu 12.04 - LXDE 0.5.8 - Gambas 3.4.0 - QGtk (default)
> System 3: Lubuntu 12.04 - LXDE 0.5.8 - Gambas 3.4.0 - QGtk (default)
> System 4: Lubuntu 12.10 - LXDE 0.5.11 - Gambas 3.4.0 rev#5608 - QGtk
> (default)
> -> not working with gb.qt4
> system 3 and 4 are in a VM
> system 1 and 2 are located at my work (so out of reach now)
> 
> System 5: Lubuntu 12.04 - LXDE 0.5.8 - Gambas 3.3.4 - QGtk (default)
> System 6: Lubuntu 12.04 - LXDE 0.5.8 - Gambas 3.4.0 - QGtk (default)
> -> working with gb,qt4
> system 5 and 6 are in a VM
> 
> Attached:
> IconViewOK.png -> shows IDE System Information and 
> working gb.qt4 IconView on system 6
> 
> IconViewNotOK.png -> shows IDE Sytem Information and
> working gb.gtk and non working gb.qt4 IconView on system 4
> 
> Only difference I noticed is:
> System 1 -> 4 are installed in the past month
> System 5 -> 7 are installed before september 2012 (but kept updated)
> 
> I compared versions of several files in synaptic and they all are same
> versions for all the Lubuntu 12.04 systems.
> 
> Did you try installing Lubuntu 12.04 or 12.10 in a VM to see if problem
> occurs as it only happens on Lubuntu?
> 
> 
Two screenshots to illustrate
Both systems are Lubuntu 12.04 - LXDE 0.5.8 - Gambas 3.4.0 - QGtk
Both screens show left InconView run with gb.qt4 and theme settings.
One is okay, other not, both have exact same theme

-- 
Kind regards,

Willy (aka gbWilly)

http://gambasshowcase.org/
http://howtogambas.org
http://gambos.org



-------------- next part --------------
A non-text attachment was scrubbed...
Name: Lubuntu-12.04-LXDE-0.5.8-Gambas-3.4.0.png
Type: image/png
Size: 70133 bytes
Desc: not available
URL: <http://lists.gambas-basic.org/pipermail/user/attachments/20130406/255df4ba/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Lubuntu-12.04-LXDE-0.5.8-Gambas-3.4.0-NO.png
Type: image/png
Size: 67843 bytes
Desc: not available
URL: <http://lists.gambas-basic.org/pipermail/user/attachments/20130406/255df4ba/attachment-0001.png>