I am using Ubuntu 16.04 (JetPack 3.1) on TX1. Unfortunately I experience the following issue - after a period of inactivity the monitor goes off (as intended), but after roughly 10 seconds it turns on again completely blackened (with a mouse cursor visible).
I have experimented a lot so far:
- Tried to disable gnome-screensaver (including “chmod -x /usr/bin/gnome-screensaver”)
- Experimented with “xset dpms” settings and “xset s” settings
Nothing helped. The monitor just turns back on. I read about vbetool, but it’s not available on Arm64.
Any ideas/hints what to try? As it seems the problem is somewhere in X11, not in Gnome as even “xset dpms force off” doesn’t work properly.
Especially weird - after “xset s noblank; xset dpms force off” the screen turns back on with a strange grey picture.
After “xset s noexpose; xset dpms force off” the screen turns on again and shows the desktop, but after hitting a key it turns for 1-2 seconds off again and then on.
“xset s off” doesn’t help either.
I’ve also tried:
setterm -blank 5 -powersave powerdown -powerdown 5
Which resulted in:
setterm: terminal xterm-256color does not support --blank
setterm: cannot (un)set powersave mode: Inappropriate ioctl for device
This is the contents of my xorg.conf file:
Section "Module" Disable "dri" SubSection "extmod" Option "omit xfree86-dga" EndSubSection EndSection Section "Device" Identifier "Tegra0" Driver "nvidia" Option "AllowEmptyInitialConfiguration" "true" EndSection Section "Monitor" Identifier "DSI-0" Option "Ignore" EndSection
Many thanks for any help!!!