xdiff.txt

The following are changes in Xorg.0.log after running
xrandr --output HDMI-1-0 --auto eDP-1-0 --pos 5x5
(Initially eDP-1-0 is the only connected monitor. The crash only happens when 
I connect HDMI-1-0 and set the pos of eDP-1-0 simultaneously.)

696,733d695
< [222960.512] (II) modeset(G0): EDID vendor "SDC", prod id 18001
< [222960.512] (II) modeset(G0): Printing DDC gathered Modelines:
< [222960.512] (II) modeset(G0): Modeline "1366x768"x0.0   76.30  1366 1430 1478 1606  768 770 775 792 -hsync -vsync (47.5 kHz eP)
< [222960.512] (II) modeset(G0): Modeline "1366x768"x0.0   50.80  1366 1430 1478 1606  768 770 775 792 -hsync -vsync (31.6 kHz e)
< [222974.012] (II) modeset(G0): EDID vendor "SDC", prod id 18001
< [222974.012] (II) modeset(G0): Printing DDC gathered Modelines:
< [222974.012] (II) modeset(G0): Modeline "1366x768"x0.0   76.30  1366 1430 1478 1606  768 770 775 792 -hsync -vsync (47.5 kHz eP)
< [222974.012] (II) modeset(G0): Modeline "1366x768"x0.0   50.80  1366 1430 1478 1606  768 770 775 792 -hsync -vsync (31.6 kHz e)
< [222989.272] (II) modeset(G0): EDID vendor "SDC", prod id 18001
< [222989.272] (II) modeset(G0): Printing DDC gathered Modelines:
< [222989.272] (II) modeset(G0): Modeline "1366x768"x0.0   76.30  1366 1430 1478 1606  768 770 775 792 -hsync -vsync (47.5 kHz eP)
< [222989.272] (II) modeset(G0): Modeline "1366x768"x0.0   50.80  1366 1430 1478 1606  768 770 775 792 -hsync -vsync (31.6 kHz e)
< [222990.401] (EE) 
< [222990.401] (EE) Backtrace:
< [222990.402] (EE) 0: /usr/lib/xorg-server/Xorg (OsLookupColor+0x139) [0x596d09]
< [222990.403] (EE) 1: /usr/lib/libc.so.6 (__restore_rt+0x0) [0x7fc73684467f]
< [222990.403] (EE) 2: /usr/lib/xorg-server/Xorg (DamageRegister+0x11) [0x519661]
< [222990.404] (EE) 3: /usr/lib/xorg-server/Xorg (xf86RandR12PreInit+0x488) [0x4bc268]
< [222990.404] (EE) 4: /usr/lib/xorg-server/Xorg (BlockHandler+0x8a) [0x43d88a]
< [222990.404] (EE) 5: /usr/lib/xorg-server/Xorg (WaitForSomething+0x163) [0x58f4c3]
< [222990.405] (EE) 6: /usr/lib/xorg-server/Xorg (SendErrorToClient+0x111) [0x438c61]
< [222990.405] (EE) 7: /usr/lib/xorg-server/Xorg (remove_fs_handlers+0x41b) [0x43cf4b]
< [222990.406] (EE) 8: /usr/lib/libc.so.6 (__libc_start_main+0xf0) [0x7fc736831610]
< [222990.407] (EE) 9: /usr/lib/xorg-server/Xorg (_start+0x29) [0x427319]
< [222990.408] (EE) 10: ? (?+0x29) [0x29]
< [222990.408] (EE) 
< [222990.408] (EE) Segmentation fault at address 0x10
< [222990.408] (EE) 
< Fatal server error:
< [222990.408] (EE) Caught signal 11 (Segmentation fault). Server aborting
< [222990.408] (EE) 
< [222990.408] (EE) 
< Please consult the The X.Org Foundation support 
< 	 at http://wiki.x.org
<  for help. 
< [222990.408] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
< [222990.408] (EE) 
< [222990.456] (EE) Server terminated with error (1). Closing log file.