From: [email protected]

Package: kscreensaver
Version: 4:3.2.3-2
Severity: important

Hi,

today I had time to investigate why suddenly my screensaver wasn't
working anymore. I've then found out about /usr/bin/*.kss and tested
them manually. Some, including my favourite ksolardwinds, are broken.
Here's the transcript:

|[salem:~]-73> /usr/bin/ksolarwinds.kss
|Unable to resolve GL/GLX symbols - please check your GL library installation. |zsh: exit 1 /usr/bin/ksolarwinds.kss
|[salem:~]-74> /usr/bin/keuphoria.kss
|Unable to resolve GL/GLX symbols - please check your GL library installation. |zsh: exit 1 /usr/bin/keuphoria.kss
|[salem:~]-75> /usr/bin/kflux.kss
|Unable to resolve GL/GLX symbols - please check your GL library installation. |zsh: exit 1 /usr/bin/kflux.kss
|[salem:~]-76> /usr/bin/kfountain.kss
|Unable to resolve GL/GLX symbols - please check your GL library installation. |zsh: exit 1 /usr/bin/kfountain.kss
|[salem:~]-77> /usr/bin/kgravity.kss
|Unable to resolve GL/GLX symbols - please check your GL library installation. |zsh: exit 1 /usr/bin/kgravity.kss
|[salem:~]-78> /usr/bin/kwave.kss
|Unable to resolve GL/GLX symbols - please check your GL library installation. |zsh: exit 1 /usr/bin/kwave.kss


I would appreciate if you could take a look at the issue and fix it
soon. Thanks for looking into the issue.

Christian

-- System Information:
Debian Release: 3.1
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.8-rc3
Locale: LANG=POSIX, LC_CTYPE=de_DE@euro

Versions of packages kscreensaver depends on:
ii kdebase-bin 4:3.2.3-1 KDE Base (binaries)
ii kdelibs4 4:3.2.3-4 KDE core libraries
ii libart-2.0-2 2.3.16-6 Library of functions for 2D graphi ii libc6 2.3.2.ds1-15 GNU C Library: Shared libraries an ii libfam0c102 2.7.0-5 client library to control the FAM ii libgcc1 1:3.4.1-5 GCC support library
ii libice6 4.3.0.dfsg.1-6 Inter-Client Exchange library
ii libpng12-0 1.2.5.0-7 PNG library - runtime
ii libqt3c102-mt 3:3.3.2-3 Qt GUI Library (Threaded runtime v ii libsm6 4.3.0.dfsg.1-6 X Window System Session Management ii libstdc++5 1:3.3.4-7 The GNU Standard C++ Library v3
ii libx11-6 4.3.0.dfsg.1-6 X Window System protocol client li ii libxext6 4.3.0.dfsg.1-6 X Window System miscellaneous exte ii libxrender1 0.8.3-7 X Rendering Extension client libra ii libxt6 4.3.0.dfsg.1-6 X Toolkit Intrinsics
ii xlibmesa3-gl [libgl1] 4.2.1-16 Mesa 3D graphics library [XFree86] ii xlibmesa3-glu [libglu1] 4.2.1-16 Mesa OpenGL utility library [XFree ii xlibs 4.3.0.dfsg.1-6 X Window System client libraries m ii zlib1g 1:1.2.1.1-5 compression library - runtime

-- no debconf information

--
Think of all the beauty still left around you and be happy.
-- Anne Frank


--
To UNSUBSCRIBE, email to [email protected]
with a subject of "unsubscribe". Trouble? Contact [email protected]

--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)

From: [email protected]

Hi.

ii xlibmesa3-gl [libgl1] 4.2.1-16 Mesa 3D graphics library [XFree86]
ii xlibmesa3-glu [libglu1] 4.2.1-16 Mesa OpenGL utility library [XFree

These packages do not exist in either unstable or testing.

Can you please try replacing them with xlibmesa-gl and xlibmesa-glu,
which are both in testing/unstable? Does this fix the problem?

Ben.



--
To UNSUBSCRIBE, email to [email protected]
with a subject of "unsubscribe". Trouble? Contact [email protected]

--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)

From: [email protected]

Hi Ben

On [12/08/04 21:16], Ben Burton wrote:

ii xlibmesa3-gl [libgl1] 4.2.1-16 Mesa 3D graphics library [XFree86]
ii xlibmesa3-glu [libglu1] 4.2.1-16 Mesa OpenGL utility library [XFree

These packages do not exist in either unstable or testing.

Hm, maybe there were once availabe.

Can you please try replacing them with xlibmesa-gl and xlibmesa-glu,
which are both in testing/unstable? Does this fix the problem?

[salem:~]-3> dpkg -l xlibmesa-gl xlibmesa-glu Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad) ||/ Name Version Description +++-===================-===================-======================================================
ii xlibmesa-gl 4.3.0.dfsg.1-6 Mesa 3D graphics library [XFree86] ii xlibmesa-glu 4.3.0.dfsg.1-6 Mesa OpenGL utility library [XFree86]

So as you can see, I just installed those packages. Now I'm trying to
start one of the screensavers:

[salem:~]-4> /usr/bin/ksolarwinds.kss
Unable to resolve GL/GLX symbols - please check your GL library installation. zsh: exit 1 /usr/bin/ksolarwinds.kss

I've now decided to investigate this a bit further. With the help of
strace, I noticed, that ksolarwinds.kss was looking for libGL.so. I then searched on packages.debian.org for this file. I found it in the package xlibmesa-gl-dev. After installing it, ksolarwinds.kss will start up
fine, except that it's now damn slow. Okay after installing xlibmesa-dri
and restarting X/KDE, everything works now fine.

So I'm wondering why I now needed to install a -dev package to get the
file that some kscreensavers depend upon. And I just noticed that the
screen saver now produces the following warning:

|[salem:~]-10> /usr/bin/ksolarwinds.kss
|X Error of failed request: BadWindow (invalid Window parameter)
| Major opcode of failed request: 4 (X_DestroyWindow)
| Resource id in failed request: 0x220000b
| Serial number of failed request: 315
| Current serial number in output stream: 318

You might want to take a look at that one too. If you need any further information or investiation, I'm willing to provide it. Thanks for your
help in investigating this issue further.

Christian
--
Debian Developer (http://www.debian.org)
1024D/B7CEC7E8 44BD 1F9E A997 3BE2 A44F 96A4 1C98 EEF3 B7CE C7E8

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.3.6-cvs (GNU/Linux)

iEYEARECAAYFAkEbgisACgkQHJju87fOx+hmXgCfe74pNUEqFsSOzo6G5kigd8B6 v/cAn0YyEtbtvCclFjgt1TXRxgVHrrnI
=Npee
-----END PGP SIGNATURE-----

--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)

From: [email protected]

Yup.

From qt-x11-free-3.3.2/src/opengl/qgl_x11.cpp :

QLibrary gl("GL");
...
if (fatal)
qFatal("Unable to resolve GL/GLX symbols - please check your GL
library installation.");

And AIUI, QLibrary will search for "libGL.so", without an soname.

Hmm.

b.



--
To UNSUBSCRIBE, email to [email protected]
with a subject of "unsubscribe". Trouble? Contact [email protected]

--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)

From: [email protected]

reassign 264928 libqt3c102-mt
retitle 264928 GL support in Qt broken for systems without -dev packages
thanks mate

Currently, GL support in Qt is completely broken for systems without the xlibmesa-gl-dev package installed.

The reason can be found in qt-x11-free-3.3.2/src/opengl/qgl_x11.cpp :

QLibrary gl("GL");
gl.setAutoUnload(FALSE);

qt_glCallLists = (_glCallLists) gl.resolve("glCallLists");

if (!qt_glCallLists) { // if this fails the rest will surely fail
if (fatal)
qFatal("Unable to resolve GL/GLX symbols - please check your
GL library installation.");
return FALSE;
}

Specifically, the use of QLibrary gl("GL") means that Qt will search for libGL.so, and not libGL.so.1.

I believe that this can be trivially fixed by replacing the QLibrary constructor with:

QLibrary gl("libGL.so.1")

since AIUI the QLibrary constructor can cope with both formats
(platform-indep and platform-dep).

It would be very good if this could be fixed for sarge. The alternative
is to have all Qt/GL apps re-uploaded to depend on xlibmesa-gl-dev,
which is both a lot more work and also a substandard fix.

Thanks - Ben. :)



--
To UNSUBSCRIBE, email to [email protected]
with a subject of "unsubscribe". Trouble? Contact [email protected]

--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)