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[Bug 1268151] Re: [Dell M4800] DPMS support broken, fails to wake up the monitor after putting it to sleep

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: "Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>
Date: Sun, 04 Jan 2015 14:48:33 -0000
Reply-to: Bug 1268151 <1268151@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Tags added: needs-xorg-ac

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https://bugs.launchpad.net/bugs/1268151

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

Status in xorg package in Ubuntu:
  Incomplete

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
                          fadfffefffedffff
                          9fffffffffffffff
                          fff7ffffffffffff
    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
  Colors:
    default colormap:  0x20    BlackPixel:  0x0    WhitePixel:  0xffffff
  Font Path:
    /usr/share/fonts/X11/misc,/usr/share/fonts/X11/100dpi/:unscaled,/usr/share/fonts/X11/Type1,/usr/share/fonts/X11/100dpi,built-ins
  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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