Display's Going to Sleep

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  • Problem
  • Updated 3 years ago
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This is a very frustrating problem.  We currently have 14 Rise Vision powered displays.  The player is an ASUS UN42 mini-PC connected via HDMI running the native player on Ubuntu 14.04.  The majority of the screens are older (8+ year) Samsung 400DXn screens re-purposed from our previous MagicInfo deployment.

All ten of those older screens were working fine until recently.  Now four of the ten seem to go into a sleep mode every hour, at 2 minutes after the hour.  (12:02pm, 1:02pm, 2:02pm, etc).  It wouldn't be nearly as big of a problem except that two of these four are in our main reception area, so having them down looks terrible.

I am completely baffled as to what is happening with them.  Rise support has given up trying to figure out what is going on and I cannot for the life of me figure out a common thread between them outside of them shutting off at 2 minutes past.

I just now setup a new player with a fresh install of Ubuntu and the player and plugged it in at 12:00pm.  Two minutes later it shut off with it's partners like clockwork.  The one I pulled and connected to a newer Samsung  screen, is still on.  

When I press the power button on the TV and turn it completely off/on again it shows the slide show for about 60 seconds (it's still playing on the player) before going right back to sleep as if it's not receiving signal and going into a power save mode.  The only way to make it stay on (until 2 minutes past) is to power cycle the computer.  It doesn't matter how long both the screen and the computer have been on.  Like clock work at 2 minutes past it happens again.

It has to be the screens and I have no idea what to check to find out.  Any help is appreciated here, even if it's just concluding, beyond a shadow of a doubt, that it's a problem with the screen.  I just don't want to replace these two 40" displays and find the problem comes right back again.
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mikefinnell

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Posted 3 years ago

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Heather Schrader

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Is there anything within the settings on the TV itself for the sleep timer or something of that nature. Agree it sounds like something with the TV. 
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mikefinnell

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Nothing I can find, the menus aren't all that deep.  There's a sleep function but it's disabled, plus that doesn't account for the 2 minutes after the hour issue.  I've restarted them at 12:03 and 12:59 and they still click off at 1:02.
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Robert Schoneman, Champion

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Those devices originally had an embedded Windows XP machine. Is it still inside and running? If so, it likely has the ability to directly control the display and may have a timer of some kind running from old scheduled content? 
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mikefinnell

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It is still attached and running.  I just recently went into it's BIOS settings are played with some of the energy saving settings to see if it made a difference.  There was an energy saving setting for the screen that I switched to "Always On" from it's default.

As I type this I realize the screen that I changed this on, and that was up and running at 2:02 did not go off.  However they stayed on all day on Tuesday so god only knows if it's going to stick.
(Edited)
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Robert Schoneman, Champion

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I'd recommend disabling/removing the embedded machine if you're not using it. Most displays with embedded or card-slot computers allow those devices to have complete control over the display panel and can often override anything you set in the display menus. 
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mikefinnell

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The problem is finding documentation on how to do that. It took me forever to find the instructions on how to get into the BIOS and they were in Italian.
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mikefinnell

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For reference sake the screens are Samsung 400DXn units with an integrated XP thin client.
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mikefinnell

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Just pulled a screen down and trialed and error-ed my way though disconnecting the embedded device.


For reference on a Samsung 400DXn with an embedded device/thin client you need to disconnect the power cord leading from the TV's power supply to the computer then remove the thin client board completely from the TV. Just disconnecting the power from the client doesn't because the TV's main board acts as a daughter board to the computer.
(Edited)
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Ray Durkin

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Mike,

Has enough time passed that you have been able to prove that disconnecting the internal device has resolved the issue?
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mikefinnell

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It made it past 5:02 PM without restarting, and it was on this morning. I -think- it may be resolved. I'm going to perform surgery on it's twin in a little while. If they run all weekend and are up on Monday I think it's case closed.

I'm hesitant as I've "fixed' the problem about 3 times now, and after a day it always seems to come back.
(Edited)
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Ray Durkin

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Excellent - looking forward to seeing the results on Monday
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mikefinnell

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While we wait for confirmation of the fix working, this is the embedded device that needed to be removed from the Samsung 400 DNx screen. Note the black connector at the top of the image. That marries the computer board to the television board, and was the reason removing just the power to the computer portion would not work.

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mikefinnell

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After a slight hiccup yesterday with one of the two screens not coming on (I didn't set auto-logon after reinstalling it) I'm happy to report that removing the thin client from inside the display fixed the problem.
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Robert Schoneman, Champion

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Fantastic! Glad to hear you were able to get it running again. Have fun removing the rest of those little beggars! :)
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Ray Durkin

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What a pain in the neck!  But it's great that there is a solution and we all appreciate you sharing this process with us.  Thank you.

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