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Im using Linaro Raring Server for Cubieboard A20 from here:

www.cubieforums.com/index.php?topic=807.0

After about 10 minutes, the screen goes to black, even I'm using keyboard or mouse, so seems not be a screensaver to me, since not idle. Nothing I can do brings the screen back again, only a reboot. My system still alive (my TV shows signal is active).

I'm not using GUI, so answer in terminal commands.

I don't use GUI, but have a X11, because xbmc is installed on system. At startup, xbmc starts without login.

Steps I've done:

1) Start system and XBMC. Auto login (root). Black screen after 10 min even using keyboard/mouse.

2) Start without XBMC (and GUI). Auto login (root). Black screen after 10 min even using keyboard/mouse.

Tried this https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1072531

and this How to stop screen going black after 10 min

I don't have xset and can't find where xorg.conf is.

There is a X11 in init folder. XBMC is using framebuffer.

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Magno C
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  • Does this happen with other (non-root) user? Linaro Raring Server is not even Ubuntu! Also, it says **"!! Unstable release !!"** in red letters in the post that you linked. It also apparently uses saucy witch is another reason why it is offtopic. You should ask in their forums. – Braiam Oct 02 '13 at 20:07
  • Yes. This warning refers to use of xbmc in cubieboard (the CedarX drivers is in tests) – Magno C Oct 03 '13 at 12:09
  • @Braiam I think the main question is how to disable the "screen saver" when there is no GUI, only framebuffer. I have no xset. Maybe kernel boot commands? Maybe tty0 settings? I appreciate anything you have in mind. – Magno C Oct 03 '13 at 12:19
  • @MagnoC: It would be your display manager which is causing the problem. I want you to post the output of these commands: `cat /etc/X11/default-display-manager` and `ls /etc/sbin/*dm`. Reply.. – Saurav Kumar Oct 08 '13 at 18:03
  • @Saurav Kumar I figured out by adding `consoleblank = 0` in /boot/uEnv.txt file. I think this file is the same as kernel commands in boot process. Thanks anyway. – Magno C Oct 09 '13 at 18:28
  • @MagnoC: Good to know that you solved your issue.. ;) – Saurav Kumar Oct 09 '13 at 18:30

2 Answers2

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I figured out by adding consoleblank = 0 in /boot/uEnv.txt file. I think this file is the same as kernel commands in boot process.

extraargs = disp.screen0_output_mode=1280x720p60 consoleblank=0
Magno C
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Try setting the option "LOCK_SCREEN" to false in /etc/default/acpi-support

Another place to try is via grub, edit /etc/default/grub, change GRUB_CMDLINE_LINUX="" to GRUB_CMDLINE_LINUX="acpi_osi=Linux acpi_backlight=vendor"

NGRhodes
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  • I don't have grub. I don't know the boot process in details, but I have a DOS partition with some files (uEnv.txt, boot.scr, etc ... by the way, the boot is in a SDCARD). I will try your other tip. – Magno C Oct 08 '13 at 11:03
  • I think the boot is U-Boot (http://www.denx.de/wiki/U-Boot/WebHome) – Magno C Oct 08 '13 at 11:07