Pi shuts off monitor now?

[solar3000]

I disable screen blanking on all my pis because it just sends out a black image.
I just installed the latest raspbian and after 15 minutes or so I noticed my monitor is off. Keypress and monitor comes back on.
When did this happen? I thought the pi has no power save features.

[W. H. Heydt]

The Pi doesn't save power, but X Windows has a screen blanking facility.

What is your method for disabling screen blanking?

[henni]

Installed latest version of Raspbian (as of 07/14/2016).
Everything ran well. I found a reference to a new Open Gl graphics driver, ran ras--whatever..config to set up its use. I then rebooted the system (I am using an hdmi output display and using its audio speakers

But, the system with the use Open GL set would not boot. The screen remains a complete blank as if shot with a gun.

Is there any way I can boot up to a simple tty screen, a root tty screen, so that I can run the /rasp...config' program again to turn off the use OpenGl option so my system wlll boot.

Or some any other way to correct it that is the easier way?

[W. H. Heydt]

Installed latest version of Raspbian (as of 07/14/2016).
Everything ran well. I found a reference to a new Open Gl graphics driver, ran ras--whatever..config to set up its use. I then rebooted the system (I am using an hdmi output display and using its audio speakers

But, the system with the use Open GL set would not boot. The screen remains a complete blank as if shot with a gun.

Is there any way I can boot up to a simple tty screen, a root tty screen, so that I can run the /rasp...config' program again to turn off the use OpenGl option so my system wlll boot.

Or some any other way to correct it that is the easier way?

If you can discover the IP address (or you have a router that will connect by hostname) you can ssh in an run "sudo raspi-config" and make changes that way, including have the Pi boot to CLI (i.e. not start X automatically).

[solar3000]

yeah the new opengl experimental driver is experimental.
many programs don't run properly.
Like minecraft runs but with a blank screen.
omxplayer plays videos and you can hear audio but the video does not show up - you still see the desktop.
but hey, the monitor actually shuts off.