DPMS signal to turn off monitor results in FBIOBLANK: Operation not permitted

[doozan]

This may be a dup of #487 but that was closed a year ago and that patch looks like it's still in the latest kernel. I'm seeing this on a RPi 2 with kernel 3.18.11-v7+

Under Xorg, running "xset dpms force off" results in the monitor going dark but never powering off. Xorg.0.log shows:

(EE) FBDEV(0): FBIOBLANK: Operation not permitted

Running "tvservice -o" will properly turn off the monitor, FWIW.

[asgh]

I can confirm this. I have the exact same problem.

[hunternet93]

Same issue here running 3.18.0-trunk-rpi2. Looks like the function bcm2708_fb_blank changed significantly after the commit fixing #487, maybe a bug was introduced somehow.

[Ruffio]

@doozan has your issue been resolved? If so, please close this issue. Thanks.

[JamesH65]

Closing due to lack of activity. Reopen if you feel this issue is still relevant.

[popcornmix]

For info. Setting hdmi_blanking=1 in config.txt will remove hdmi output on a console blank.
It is not a default option as it is unwanted for some use cases (e.g. omxplayer).