This issue has sat with a status of 'Incomplete' for over three years
now. There has been no response to comment #47 and the bug report only
references Ubuntu releases that are now EOL so it is being closed with a
status of 'Invalid'.

Please feel free to re-open this bug report if this is still an issue
when using a currently supported release of Ubuntu but please make sure
that you tell us in which release(s) you still experience this issue.

** Changed in: xorg (Ubuntu)
       Status: Incomplete => Invalid

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  [Dell M4800] DPMS support broken, fails to wake up the monitor after
  putting it to sleep

Status in xorg package in Ubuntu:

Bug description:
  With my Dell Precision M4800, GK106GLM [Quadro K2100M], QHD+ display, and 
either nvidia-graphics-drivers-331 or nvidia-graphics-drivers-319 once the 
display shuts off, it will not wake up anymore, and the screen stays dark. A 
cycle of the following will leave the display dark:
  xset dpms force off; sleep 30; xset dpms force on

  WORKAROUND: A restart of the Xserver will bring back the display.

  WORKAROUND: Don't allow DPMS to switch off the display:
  xset dpms 0 0 0

  xset -q -d :0.0
  Keyboard Control:
    auto repeat:  on    key click percent:  0    LED mask:  00000000
    XKB indicators:
      00: Caps Lock:   off    01: Num Lock:    off    02: Scroll Lock: off
      03: Compose:     off    04: Kana:        off    05: Sleep:       off
      06: Suspend:     off    07: Mute:        off    08: Misc:        off
      09: Mail:        off    10: Charging:    off    11: Shift Lock:  off
      12: Group 2:     off    13: Mouse Keys:  off
    auto repeat delay:  500    repeat rate:  20
    auto repeating keys:  00ffffffdffffbbf
    bell percent:  50    bell pitch:  400    bell duration:  100
  Pointer Control:
    acceleration:  2/1    threshold:  4
  Screen Saver:
    prefer blanking:  yes    allow exposures:  yes
    timeout:  0    cycle:  0
    default colormap:  0x20    BlackPixel:  0x0    WhitePixel:  0xffffff
  Font Path:
  DPMS (Energy Star):
    Standby: 0    Suspend: 0    Off: 0
    DPMS is Enabled
    Monitor is On

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: nvidia-331 331.20-0ubuntu9
  ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
  Uname: Linux 3.11.0-15-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.13.1-0ubuntu1
  Architecture: amd64
  Date: Sat Jan 11 12:06:30 2014
  InstallationDate: Installed on 2014-01-07 (3 days ago)
  InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016)
  SourcePackage: nvidia-graphics-drivers-331
  UpgradeStatus: No upgrade log present (probably fresh install)

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