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

 

Î'm adding it here for reference then:

Issue discussed/reported to Nvidia here:
https://devtalk.nvidia.com/default/topic/726285/missing-vt-output-with-
all-current-drivers-on-qhd-k2100m/

But yes, there seems to be Nvidia engineers looking there, as "sandipt"
commented "filed Bug 1512547 to track this issue" in the mentioned
forum. I'm not sure if that bug tracker is public anywhere.

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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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