at what circumstances can DISPLAY == '(null)' ? looks more like a bug in an Xserver. re, wh Am 20.11.2017 06:40, schrieb xiaoguang wang: > > > > _______________________________________________ > xorg-devel at lists.x.org: X.Org development > Archives: http://lists.x.org/archives/xorg-devel > Info: https://lists.x.org/mailman/listinfo/xorg-devel