I see very similar crashes since upgrading from 15.10 to 16.04. I'm on a Lenovo ideapad 300 with Skylake graphics
Xorg.log backtrace: [ 167.216] (EE) Backtrace: [ 167.237] (EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x4e) [0x55cd120e95ce] [ 167.237] (EE) 1: /usr/lib/xorg/Xorg (0x55cd11f37000+0x1b6959) [0x55cd120ed959] [ 167.238] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7fbb14a49000+0x354a0) [0x7fbb14a7e4a0] [ 167.238] (EE) 3: /usr/lib/x86_64-linux-gnu/libpixman-1.so.0 (pixman_region_selfcheck+0x94) [0x7fbb15bd5194] [ 167.238] (EE) 4: /usr/lib/x86_64-linux-gnu/libpixman-1.so.0 (pixman_region_intersect+0x3b) [0x7fbb15bd549b] [ 167.238] (EE) 5: /usr/lib/xorg/Xorg (0x55cd11f37000+0x127180) [0x55cd1205e180] [ 167.238] (EE) 6: /usr/lib/xorg/Xorg (0x55cd11f37000+0x12958b) [0x55cd1206058b] [ 167.238] (EE) 7: /usr/lib/xorg/Xorg (ValidatePicture+0x9) [0x55cd12062359] [ 167.238] (EE) 8: /usr/lib/xorg/Xorg (CompositeTrapezoids+0x67) [0x55cd12062827] [ 167.238] (EE) 9: /usr/lib/xorg/Xorg (0x55cd11f37000+0x130832) [0x55cd12067832] [ 167.238] (EE) 10: /usr/lib/xorg/Xorg (0x55cd11f37000+0x53bbf) [0x55cd11f8abbf] [ 167.238] (EE) 11: /usr/lib/xorg/Xorg (0x55cd11f37000+0x57c33) [0x55cd11f8ec33] [ 167.238] (EE) 12: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf0) [0x7fbb14a69830] [ 167.238] (EE) 13: /usr/lib/xorg/Xorg (_start+0x29) [0x55cd11f78f59] [ 167.238] (EE) [ 167.238] (EE) Segmentation fault at address 0x55cdb01b534e -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1606774 Title: Xorg crash To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1606774/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
