Hello, I have reproduced the bug and attached the requested files. I think it's a problem in gnome-screensaver because of the last kern.log line:
Mar 12 23:56:54 gaga kernel: [38061.034879] gnome-screensav[1997]: segfault at 30 ip 00007f7651c163e7 sp 00007fffc9b390b0 error 4 in libgtk-3.so.0.318.0[7f76519ec000+4bf000]
Hello, I have reproduced the bug and attached the requested files. I think it's a problem in gnome-screensaver because of the last kern.log line:
Mar 12 23:56:54 gaga kernel: [38061.034879] gnome-screensav [1997]: segfault at 30 ip 00007f7651c163e7 sp 00007fffc9b390b0 error 4 in libgtk- 3.so.0. 318.0[7f76519ec 000+4bf000]