(gdb) bt
#0  0x00000008026de425 in ParseTable (pDeviceData=0x7fffffffdd10, IndexInMasterTable=34 '"') at AtomBios/Decoder.c:171
#1  0x00000008026e3140 in ParseTableWrapper (pspace=0x7fffffffde60, index=34, handle=0x801a31740, BIOSBase=0x801a77000, msg_return=0x7fffffffdd68) at radeon_atomwrapper.c:50
#2  0x00000008026e24da in rhdAtomExec (handle=0x801a31740, unused=ATOMBIOS_EXEC, data=0x7fffffffde40) at radeon_atombios.c:2314
#3  0x00000008026e2667 in RHDAtomBiosFunc (scrnIndex=0, handle=0x801a31740, id=ATOMBIOS_EXEC, data=0x7fffffffde40) at radeon_atombios.c:2356
#4  0x00000008026f84f0 in atombios_blank_crtc (atomBIOS=0x801a31740, crtc=0, state=1) at atombios_crtc.c:93
#5  0x00000008026f8644 in atombios_crtc_dpms (crtc=0x801a25800, mode=3) at atombios_crtc.c:126
#6  0x00000008026cfd7c in radeon_crtc_dpms (crtc=0x801a25800, mode=3) at radeon_crtc.c:74
#7  0x00000008026cfc0b in RADEONBlank (pScrn=0x801a03800) at radeon_display.c:820
#8  0x00000008026ba183 in RADEONRestore (pScrn=0x801a03800) at radeon_driver.c:5769
#9  0x00000008026bb409 in RADEONLeaveVT (scrnIndex=0, flags=0) at radeon_driver.c:6243
#10 0x00000000004612a5 in AbortDDX ()
#11 0x0000000000562118 in AbortServer ()
#12 0x0000000000562767 in FatalError ()
#13 0x000000000047bce9 in xf86SigHandler ()
#14 <signal handler called>
#15 0x00000008026de425 in ParseTable (pDeviceData=0x7fffffffe660, IndexInMasterTable=34 '"') at AtomBios/Decoder.c:171
#16 0x00000008026e3140 in ParseTableWrapper (pspace=0x7fffffffe7b0, index=34, handle=0x801a31740, BIOSBase=0x801a77000, msg_return=0x7fffffffe6b8) at radeon_atomwrapper.c:50
#17 0x00000008026e24da in rhdAtomExec (handle=0x801a31740, unused=ATOMBIOS_EXEC, data=0x7fffffffe790) at radeon_atombios.c:2314
#18 0x00000008026e2667 in RHDAtomBiosFunc (scrnIndex=0, handle=0x801a31740, id=ATOMBIOS_EXEC, data=0x7fffffffe790) at radeon_atombios.c:2356
#19 0x00000008026f84f0 in atombios_blank_crtc (atomBIOS=0x801a31740, crtc=0, state=1) at atombios_crtc.c:93
#20 0x00000008026f8644 in atombios_crtc_dpms (crtc=0x801a25800, mode=3) at atombios_crtc.c:126
#21 0x00000008026cfd7c in radeon_crtc_dpms (crtc=0x801a25800, mode=3) at radeon_crtc.c:74
#22 0x00000008026d0094 in radeon_crtc_mode_prepare (crtc=0x801a25800) at radeon_crtc.c:133
#23 0x00000000004a6b54 in xf86CrtcSetMode ()
#24 0x00000008026b4149 in RADEONScreenInit (scrnIndex=0, pScreen=0x801a27000, argc=4, argv=0x7fffffffec40) at radeon_driver.c:3631
#25 0x000000000042f988 in AddScreen ()
#26 0x0000000000461958 in InitOutput ()
#27 0x000000000043013f in main ()