To be absolutely precise it's around 00:04-00:05
Bug#868504: xserver-xorg: intermittent/occasional flicker/artifiact after upgrade to Debian9 in i965
- Bug#868504: xserver-xorg: intermittent/occasional flicker/artifiact... Veek
- Bug#868504: xserver-xorg: intermittent/occasional flicker/arti... Veek M