Monitor Waking Up While PC Remains Asleep

Monitor Waking Up While PC Remains Asleep

Postby yankee495 » Jul 12th, '18, 13:17

Hello,

I'm running Mageia 6 with Plasma 5 and kernel 4.14.44-desktop-2.mga6. The video card is a GTX 760 using Nvidia driver 390.59 on a Lenovo LI2323s LED monitor.

Everything did work fine until one day it didn't. I don't know if it was an update or a power failure but something changed. I'm not exactly sure when because many times I put the computer to sleep and left the room, so I wouldn't have noticed the monitor was not going to sleep or waking up.

A while back I noticed my monitor was waking up after about 3 minutes even though the computer is asleep with no fans and nothing else running. The monitor seems to be polling for a signal about every 30 seconds after initial wake up. It will flash Power Saving Mode on the screen then go back dark, and about 30 seconds later, it'll do it again. It does this forever. In fact, the monitor may not be going to sleep at all, technically. This happens when clicking Suspend on the menu.

Setting Screen Energy Saving in KDE System Settings does appear to work properly when the set time is reached, the monitor will go into power saving mode and appears to do it properly. The monitor is set to 1 minute and the computer to 5 minutes for testing. But, this is only before the computer goes to sleep. For a few minutes before the computer goes to sleep, the monitor appears to stay asleep properly. Once the computer goes into suspend, the monitor wakes up after about 3 minutes then does the polling thing every 30 seconds. The only time the monitor appears to properly enter sleep mode is when the set time in Power Management is reached, before the computer times out.

I have been turning off the monitor power hoping an update would fix this or I'd figure it out, but I'm not having any luck with either.

This is my xorg.conf file. It does show Option "DPMS".

Code: Select all
# File generated by XFdrake (rev 262502)

# **********************************************************************
# Refer to the xorg.conf man page for details about the format of
# this file.
# **********************************************************************

Section "ServerFlags"
    Option "DontZap" "False" # disable <Ctrl><Alt><BS> (server abort)
    #DontZoom # disable <Ctrl><Alt><KP_+>/<KP_-> (resolution switching)
    AllowMouseOpenFail # allows the server to start up even if the mouse does not work
EndSection

Section "Module"
    Load "v4l" # Video for Linux
EndSection

Section "Monitor"
    Identifier "monitor1"
    VendorName "Plug'n Play"
   
    # Apple iMac modes
    ModeLine "1024x768"   78.525 1024 1049 1145 1312   768  769  772  800 +hsync +vsync
    ModeLine "800x600"    62.357  800  821  901 1040   600  601  604  632 +hsync +vsync
    ModeLine "640x480"    49.886  640  661  725  832   480  481  484  514 +hsync +vsync
   
    # Apple monitors tend to do 832x624
    ModeLine "832x624"    57      832  876  940 1152   624  625  628  667 -hsync -vsync
   
    # Apple PowerBook G3
    ModeLine "800x600"    100     800  816  824  840   600  616  624  640 -hsync -vsync
   
    # Apple TI Powerbook
    ModeLine "1152x768"   78.741 1152 1173 1269 1440   768  769  772  800 +vsync +vsync
   
    # Pismo Firewire G3
    ModeLine "1024x768"   65     1024 1032 1176 1344   768  771  777  806 -hsync -vsync
   
    # iBook2
    ModeLine "1024x768"   65     1024 1048 1184 1344   768  771  777  806 -hsync -vsync
   
    # 17" Apple Studio Display
    ModeLine "1024x768"   112.62 1024 1076 1248 1420 768 768 780 808 +hsync +vsync
   
    # HiRes Apple Studio Display
    ModeLine "1280x1024"  135    1280 1288 1392 1664  1024 1027 1030 1064
   
    # Another variation
    ModeLine "1280x1024"  134.989 1280 1317 1429 1688  1024 1025 1028 1066 +hsync +vsync
   
    # TV fullscreen mode or DVD fullscreen output.
    # 768x576 @ 79 Hz, 50 kHz hsync
    ModeLine "768x576"     50.00  768  832  846 1000   576  590  595  630
   
    # 768x576 @ 100 Hz, 61.6 kHz hsync
    ModeLine "768x576"     63.07  768  800  960 1024   576  578  590  616
EndSection

Section "Device"
    Identifier "device1"
    VendorName "NVIDIA Corporation"
    BoardName "NVIDIA GeForce 420 series and later"
    Driver "nvidia"
    Option "DPMS"
    Option "DynamicTwinView" "false"
    Option "AddARGBGLXVisuals"
EndSection

Section "Screen"
    Identifier "screen1"
    Device "device1"
    Monitor "monitor1"
EndSection

Section "ServerLayout"
    Identifier "layout1"
    Screen "screen1"
EndSection
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yankee495
 
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