Here is the requested log. I reproduced the flashes at 13:20 by hovering the mouse over a diff on github.com and ran the requested command a few seconds later. There were many rapid black flashes on the screen, and no obvious corresponding output, but maybe there is something else interesting in there.
Here is the requested log. I reproduced the flashes at 13:20 by hovering the mouse over a diff on github.com and ran the requested command a few seconds later. There were many rapid black flashes on the screen, and no obvious corresponding output, but maybe there is something else interesting in there.