On Tue, Mar 03, 2015 at 04:41:01PM +0100, info at microlinux.fr wrote: > Anyway, I rebooted, and then... nothing. System refused even to startup, and > systemd suggested to me that I open journalctl (which taught me nothing). This doesn't make any sense. You said 'nothing' but it also suggested you run journalctl? So it wasn't nothing. What exactly did it do? Did it drop into the rescue shell? Did it kernel panic? Did you see some text then the screen blanked? Did you try older any older kernels that might have been loaded? One of the things that the nvidia driver adds is "nouveau.modeset=0 rdblacklist=nouveau" to the kernel arguments. Do you see them? I know that we saw the kernel panic when the nouveau driver was loaded on a el6.6 system with an NVidia K620, so perhaps when you brought in X11 you also installed the nouveau drivers? -- Jonathan Billings <billings at negate.org>