~ # export EGL_LOG_LEVEL=debug ~ # gdb --args X :1 GNU gdb (GDB) 7.5.1 Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-unknown-linux-gnu". For bug reporting instructions, please see: ... Reading symbols from /usr/bin/X...(no debugging symbols found)...done. (gdb) run Starting program: /usr/bin/X :1 warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7fff2f3fe000 warning: Could not load shared library symbols for linux-vdso.so.1. Do you need "set solib-search-path" or "set sysroot"? [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". X.Org X Server 1.14.0 Release Date: 2013-03-05 X Protocol Version 11, Revision 0 Build Operating System: Linux 3.8.2-1-ARCH x86_64 Current Operating System: Linux chrisl 3.8.2-1-ARCH #1 SMP PREEMPT Mon Mar 4 09:06:43 CET 2013 x86_64 Kernel command line: BOOT_IMAGE=/boot/vmlinuz-linux root=UUID=650b9f2f-d077-48e9-9fc2-7b6f2294599a ro quiet radeon.pcie_gen2=1 Build Date: 12 March 2013 12:34:56PM Current version of pixman: 0.28.2 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.1.log", Time: Wed Mar 13 12:47:58 2013 (==) Using config directory: "/etc/X11/xorg.conf.d" (==) Using system config directory "/usr/share/X11/xorg.conf.d" Initializing built-in extension Generic Event Extension Initializing built-in extension SHAPE Initializing built-in extension MIT-SHM Initializing built-in extension XInputExtension Initializing built-in extension XTEST Initializing built-in extension BIG-REQUESTS Initializing built-in extension SYNC Initializing built-in extension XKEYBOARD Initializing built-in extension XC-MISC Initializing built-in extension SECURITY Initializing built-in extension XINERAMA Initializing built-in extension XFIXES Initializing built-in extension RENDER Initializing built-in extension RANDR Initializing built-in extension COMPOSITE Initializing built-in extension DAMAGE Initializing built-in extension MIT-SCREEN-SAVER Initializing built-in extension DOUBLE-BUFFER Initializing built-in extension RECORD Initializing built-in extension DPMS Initializing built-in extension X-Resource Initializing built-in extension XVideo Initializing built-in extension XVideo-MotionCompensation Initializing built-in extension XFree86-VidModeExtension Initializing built-in extension XFree86-DGA Initializing built-in extension XFree86-DRI Initializing built-in extension DRI2 Loading extension GLX (II) [KMS] Kernel modesetting enabled. [tcsetpgrp failed in terminal_inferior: Die Operation ist nicht erlaubt] [New Thread 0x7f8d6de2a700 (LWP 3331)] libEGL debug: Native platform type: drm (autodetected) libEGL debug: EGL search path is /usr/lib/egl libEGL debug: added /usr/lib/egl/egl_gallium.so to module array libEGL debug: added egl_dri2 to module array libEGL debug: added egl_glx to module array libEGL debug: dlopen(/usr/lib/egl/egl_gallium.so) libEGL info: use DRM for display 0x26b71d0 libEGL debug: EGL user error 0x3001 (EGL_NOT_INITIALIZED) in eglInitialize(no usable display) libEGL debug: the best driver is DRI2 Program received signal SIGSEGV, Segmentation fault. glamor_egl_get_screen_private (scrn=0x269e120) at ../src/glamor_egl.c:112 112 return (struct glamor_egl_screen_private *) (gdb) bt #0 glamor_egl_get_screen_private (scrn=0x269e120) at ../src/glamor_egl.c:112 #1 0x00007f8d73be8810 in glamor_gl_dispatch_init (screen=0x2762010, dispatch=0x2775520, gl_version=513) at ../src/glamor_egl.c:592 #2 0x00007f8d72b40443 in glamor_init (screen=0x2762010, flags=15) at glamor.c:318 #3 0x00007f8d70536b0c in radeon_glamor_init (screen=0x2762010) at radeon_glamor.c:252 #4 0x00007f8d704e34ba in RADEONAccelInit (pScreen=0x2762010) at radeon_accel.c:186 #5 0x00007f8d7052f614 in RADEONScreenInit_KMS (pScreen=0x2762010, argc=2, argv=0x7fff2f327e78) at radeon_kms.c:1227 #6 0x0000000000438101 in AddGPUScreen () #7 0x00000000004793b0 in InitOutput () #8 0x0000000000426626 in ?? () #9 0x00007f8d74af6a15 in __libc_start_main () from /usr/lib/libc.so.6 #10 0x0000000000426b4d in _start () (gdb)