xf86-video-dummy from home:X0F:HSF project

需要 openSUSE Tumbleweed ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/home:X0F:HSF/openSUSE_Tumbleweed/home:X0F:HSF.repo
zypper refresh
zypper install xf86-video-dummy