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Hi.
In latest update for Ubuntu Desktop 14.04.4 LTS, there is a serious
problem when calling glGenFramebuffers() in a program that links both
libOSMesa and libX11.
Attached is a test program that can verify this. If the program is
compiled with the following
gcc check_glgenframebuffer.c -lGL -lX11 -lOSMesa
then glGenFramebuffers() will fail when current context is set to GLX
and the program will dump core upon exit. This is from gdb:
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff2ef930e in ?? () from
/usr/lib/x86_64-linux-gnu/dri/i965_dri.so
If the program is compiled with the following, then it works.
gcc check_glgenframebuffer.c -lGL -lX11
This is a problem if you have a program that needs both libs such as the
Open Source Video Mixer Snowmix.
Best regards
Peter Maersk-Moller
Installed libs:
ls -l /usr/lib/x86_64-linux-gnu/libOSMesa*
lrwxrwxrwx 1 root root 18 Jan 12 21:03
/usr/lib/x86_64-linux-gnu/libOSMesa.so -> libOSMesa.so.6.5.3
lrwxrwxrwx 1 root root 18 Jan 12 21:03
/usr/lib/x86_64-linux-gnu/libOSMesa.so.6 -> libOSMesa.so.6.5.3
-rw-r--r-- 1 root root 3708216 Jan 12 21:03
/usr/lib/x86_64-linux-gnu/libOSMesa.so.6.5.3
ls -l /usr/lib/x86_64-linux-gnu/libX11*
-rw-r--r-- 1 root root 2188236 Dec 4 2013 /usr/lib/x86_64-linux-gnu/libX11.a
lrwxrwxrwx 1 root root 15 Dec 4 2013 /usr/lib/x86_64-linux-gnu/libX11.so
-> libX11.so.6.3.0
lrwxrwxrwx 1 root root 15 Dec 4 2013
/usr/lib/x86_64-linux-gnu/libX11.so.6 -> libX11.so.6.3.0
-rw-r--r-- 1 root root 1265072 Dec 4 2013
/usr/lib/x86_64-linux-gnu/libX11.so.6.3.0
ls -l /usr/lib/x86_64-linux-gnu/libGL.*
lrwxrwxrwx 1 root root 13 Jan 12 21:03 /usr/lib/x86_64-linux-gnu/libGL.so ->
mesa/libGL.so
ls -l /usr/lib/x86_64-linux-gnu/mesa/*
-rw-r--r-- 1 root root 31 Jan 12 21:03
/usr/lib/x86_64-linux-gnu/mesa/ld.so.conf
lrwxrwxrwx 1 root root 14 Jan 12 21:03
/usr/lib/x86_64-linux-gnu/mesa/libGL.so -> libGL.so.1.2.0
lrwxrwxrwx 1 root root 14 Jan 12 21:03
/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1 -> libGL.so.1.2.0
-rw-r--r-- 1 root root 413968 Jan 12 21:03
/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2.0
ldd /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
linux-vdso.so.1 => (0x00007ffe885cf000)
libdrm_intel.so.1 => /usr/lib/x86_64-linux-gnu/libdrm_intel.so.1
(0x00007fdb85bac000)
libdrm_nouveau.so.2 => /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
(0x00007fdb859a5000)
libdrm_radeon.so.1 => /usr/lib/x86_64-linux-gnu/libdrm_radeon.so.1
(0x00007fdb85799000)
libdrm.so.2 => /usr/lib/x86_64-linux-gnu/libdrm.so.2
(0x00007fdb8558c000)
libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1
(0x00007fdb85362000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007fdb85144000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fdb84f40000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6
(0x00007fdb84c3c000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fdb84936000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fdb84571000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1
(0x00007fdb8435b000)
libpciaccess.so.0 => /usr/lib/x86_64-linux-gnu/libpciaccess.so.0
(0x00007fdb84152000)
/lib64/ld-linux-x86-64.so.2 (0x00007fdb8652a000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fdb83f39000)
ldd /usr/lib/x86_64-linux-gnu/libOSMesa.so
linux-vdso.so.1 => (0x00007ffc773d0000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007f3c1cdce000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f3c1cbca000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6
(0x00007f3c1c8c6000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f3c1c5c0000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f3c1c1fb000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1
(0x00007f3c1bfe5000)
/lib64/ld-linux-x86-64.so.2 (0x00007f3c1d57f000)
ldd /usr/lib/x86_64-linux-gnu/libX11.so
linux-vdso.so.1 => (0x00007ffe4328d000)
libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1
(0x00007f572a94c000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f572a748000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f572a383000)
libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6
(0x00007f572a17f000)
libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6
(0x00007f5729f79000)
/lib64/ld-linux-x86-64.so.2 (0x00007f572aea0000)
ldd /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2.0
linux-vdso.so.1 => (0x00007ffc7f780000)
libglapi.so.0 => /usr/lib/x86_64-linux-gnu/libglapi.so.0
(0x00007f19a4f61000)
libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6
(0x00007f19a4d4f000)
libXdamage.so.1 => /usr/lib/x86_64-linux-gnu/libXdamage.so.1
(0x00007f19a4b4c000)
libXfixes.so.3 => /usr/lib/x86_64-linux-gnu/libXfixes.so.3
(0x00007f19a4946000)
libX11-xcb.so.1 => /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1
(0x00007f19a4744000)
libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6
(0x00007f19a440f000)
libxcb-glx.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-glx.so.0
(0x00007f19a41f8000)
libxcb-dri2.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0
(0x00007f19a3ff3000)
libxcb-dri3.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0
(0x00007f19a3df0000)
libxcb-present.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-present.so.0
(0x00007f19a3bed000)
libxcb-sync.so.1 => /usr/lib/x86_64-linux-gnu/libxcb-sync.so.1
(0x00007f19a39e7000)
libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1
(0x00007f19a37c8000)
libxshmfence.so.1 => /usr/lib/x86_64-linux-gnu/libxshmfence.so.1
(0x00007f19a35c6000)
libXxf86vm.so.1 => /usr/lib/x86_64-linux-gnu/libXxf86vm.so.1
(0x00007f19a33c0000)
libdrm.so.2 => /usr/lib/x86_64-linux-gnu/libdrm.so.2
(0x00007f19a31b3000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007f19a2f95000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f19a2d91000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f19a29cc000)
libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6
(0x00007f19a27c8000)
libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6
(0x00007f19a25c2000)
/lib64/ld-linux-x86-64.so.2 (0x00007f19a53ee000)
Hardware:
Lenovo Thinkpad T61
Display controller: Intel Corporation Mobile GM965/GL960 Integrated
Graphics Controller (secondary) (rev 0c)
** Affects: mesa (Ubuntu)
Importance: High
Assignee: Timo Aaltonen (tjaalton)
Status: Incomplete
** Tags: framebuffer glgenframebuffers libgl libosmesa libx11 opengl
--
glGenFramebuffers fails when linked with OSMesa AND X11
https://bugs.launchpad.net/bugs/1551028
You received this bug notification because you are a member of Ubuntu-X, which
is subscribed to mesa in Ubuntu.
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