Comment 46 for bug 1546641

After two (faster) boot, the crash did not occured in my case.
(The default theme was loaded instead of my preferences, as it could be expected #40 , but reloging in my session reloaded my theme correctly)

Dmesg still indicates that unity-settings raises a segfault (part of the log just in case) :

[ 6.527496] usb 4-3: device descriptor read/64, error -110
[ 21.767453] usb 4-3: device descriptor read/64, error -110
[ 22.007295] usb 4-3: new full-speed USB device number 3 using ohci-pci
[ 27.143352] usb 4-3: device descriptor read/64, error -110
[ 29.059780] show_signal_msg: 36 callbacks suppressed
[ 29.059785] unity-settings-[1543]: segfault at 0 ip 00007f6fd798ae69 sp 00007fff5e55b290 error 4 in libupower-glib.so.3.0.1[7f6fd797b000+24000]
[ 29.059855] unity-settings-[1044]: segfault at 0 ip 00007fe32519ae69 sp 00007ffd85023b70 error 4 in libupower-glib.so.3.0.1[7fe32518b000+24000]
[ 42.473786] usb 4-3: device descriptor read/64, error -110
[ 42.716214] usb 4-3: new full-speed USB device number 4 using ohci-pci
[ 45.955728] nvidia-modeset: Freed GPU:0 (GPU-7da8fcc6-2c82-8fb5-addc-1ae643797ddd) @ PCI:0000:01:00.0
[ 46.455451] nvidia-modeset: Allocated GPU:0 (GPU-7da8fcc6-2c82-8fb5-addc-1ae643797ddd) @ PCI:0000:01:00.0
[ 53.179263] usb 4-3: device not accepting address 4, error -110
[ 53.315586] usb 4-3: new full-speed USB device number 5 using ohci-pci
[ 54.498038] unity-settings-[2127]: segfault at 0 ip 00007f9e7d9bae69 sp 00007ffe6dfb2420 error 4 in libupower-glib.so.3.0.1[7f9e7d9ab000+24000]
[ 63.736937] usb 4-3: device not accepting address 5, error -110
[ 63.736969] usb usb4-port3: unable to enumerate USB device