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[Bug 1295267] Re: Windows change Monitor/Desktop after screen lock

To: dx-packages@xxxxxxxxxxxxxxxxxxx
From: mreichardt <1295267@xxxxxxxxxxxxxxxxxx>
Date: Fri, 06 May 2016 10:47:56 -0000
Reply-to: Bug 1295267 <1295267@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Looking at the /var/log/Xorg.0.log, it appears that the Iiyama screen is
considered disconnected on standby - and the reconnect causes a relayout
of the desktop.

I wonder if it's possible to simply suppress or ignore those hotplug
events (?)

This is the output in the /var/log/Xorg.0.log on a standby cycle:

[ 31292.359] (--) NVIDIA(GPU-0): DFP-6: disconnected
[ 31292.359] (--) NVIDIA(GPU-0): DFP-6: Internal DisplayPort
[ 31292.359] (--) NVIDIA(GPU-0): DFP-6: 960.0 MHz maximum pixel clock
[ 31292.359] (--) NVIDIA(GPU-0): 
[ 31292.362] (--) NVIDIA(GPU-0): CRT-0: disconnected
[ 31292.362] (--) NVIDIA(GPU-0): CRT-0: 400.0 MHz maximum pixel clock
[ 31292.362] (--) NVIDIA(GPU-0): 
[ 31292.365] (--) NVIDIA(GPU-0): DFP-0: disconnected
[ 31292.365] (--) NVIDIA(GPU-0): DFP-0: Internal TMDS
[ 31292.365] (--) NVIDIA(GPU-0): DFP-0: 330.0 MHz maximum pixel clock
[ 31292.365] (--) NVIDIA(GPU-0): 
[ 31292.365] (--) NVIDIA(GPU-0): DFP-1: disconnected
[ 31292.365] (--) NVIDIA(GPU-0): DFP-1: Internal TMDS
[ 31292.365] (--) NVIDIA(GPU-0): DFP-1: 330.0 MHz maximum pixel clock
[ 31292.365] (--) NVIDIA(GPU-0): 
[ 31292.365] (--) NVIDIA(GPU-0): DFP-2: disconnected
[ 31292.365] (--) NVIDIA(GPU-0): DFP-2: Internal DisplayPort
[ 31292.365] (--) NVIDIA(GPU-0): DFP-2: 960.0 MHz maximum pixel clock
[ 31292.365] (--) NVIDIA(GPU-0): 
[ 31292.365] (--) NVIDIA(GPU-0): DFP-3: disconnected
[ 31292.365] (--) NVIDIA(GPU-0): DFP-3: Internal TMDS
[ 31292.365] (--) NVIDIA(GPU-0): DFP-3: 330.0 MHz maximum pixel clock
[ 31292.365] (--) NVIDIA(GPU-0): 
[ 31292.366] (--) NVIDIA(GPU-0): DELL P2715Q (DFP-4): connected
[ 31292.366] (--) NVIDIA(GPU-0): DELL P2715Q (DFP-4): Internal DisplayPort
[ 31292.366] (--) NVIDIA(GPU-0): DELL P2715Q (DFP-4): 960.0 MHz maximum pixel clock
[ 31292.366] (--) NVIDIA(GPU-0): 
[ 31292.366] (--) NVIDIA(GPU-0): DFP-5: disconnected
[ 31292.366] (--) NVIDIA(GPU-0): DFP-5: Internal TMDS
[ 31292.366] (--) NVIDIA(GPU-0): DFP-5: 330.0 MHz maximum pixel clock
[ 31292.366] (--) NVIDIA(GPU-0): 
[ 31292.366] (--) NVIDIA(GPU-0): DFP-6: disconnected
[ 31292.366] (--) NVIDIA(GPU-0): DFP-6: Internal DisplayPort
[ 31292.366] (--) NVIDIA(GPU-0): DFP-6: 960.0 MHz maximum pixel clock
[ 31292.366] (--) NVIDIA(GPU-0): 
[ 31292.366] (--) NVIDIA(GPU-0): DFP-7: disconnected
[ 31292.366] (--) NVIDIA(GPU-0): DFP-7: Internal TMDS
[ 31292.366] (--) NVIDIA(GPU-0): DFP-7: 330.0 MHz maximum pixel clock
[ 31292.366] (--) NVIDIA(GPU-0): 
[ 31292.573] (II) NVIDIA(0): Setting mode "DP-2: nvidia-auto-select @3840x2160 +0+0 {ViewPortIn=3840x2160, ViewPortOut=3840x2160+0+0}"
[ 31292.987] (**) NVIDIA(0): Using HorizSync/VertRefresh ranges from the EDID for display
[ 31292.987] (**) NVIDIA(0):     device Idek Iiyama PL2888UH (DFP-6) (Using EDID
[ 31292.987] (**) NVIDIA(0):     frequencies has been enabled on all display devices.)
[ 31292.992] (--) NVIDIA(GPU-0): Idek Iiyama PL2888UH (DFP-6): connected
[ 31292.992] (--) NVIDIA(GPU-0): Idek Iiyama PL2888UH (DFP-6): Internal DisplayPort
[ 31292.992] (--) NVIDIA(GPU-0): Idek Iiyama PL2888UH (DFP-6): 960.0 MHz maximum pixel clock
[ 31292.992] (--) NVIDIA(GPU-0): 
[ 31293.113] (II) NVIDIA(0): Setting mode "DP-2: nvidia-auto-select @3840x2160 +0+0 {ViewPortIn=3840x2160, ViewPortOut=3840x2160+0+0}, DP-4: nvidia-auto-select @3840x2160 +3840+0 {ViewPortIn=3840x2160, ViewPortOut=3840x2160+0+0}"
[ 31293.482] (--) NVIDIA(GPU-0): CRT-0: disconnected
[ 31293.482] (--) NVIDIA(GPU-0): CRT-0: 400.0 MHz maximum pixel clock
[ 31293.483] (--) NVIDIA(GPU-0): 
[ 31293.485] (--) NVIDIA(GPU-0): DFP-0: disconnected
[ 31293.485] (--) NVIDIA(GPU-0): DFP-0: Internal TMDS
[ 31293.485] (--) NVIDIA(GPU-0): DFP-0: 330.0 MHz maximum pixel clock
[ 31293.485] (--) NVIDIA(GPU-0): 
[ 31293.488] (--) NVIDIA(GPU-0): DFP-1: disconnected
[ 31293.489] (--) NVIDIA(GPU-0): DFP-1: Internal TMDS
[ 31293.489] (--) NVIDIA(GPU-0): DFP-1: 330.0 MHz maximum pixel clock
[ 31293.489] (--) NVIDIA(GPU-0): 
[ 31293.489] (--) NVIDIA(GPU-0): DFP-2: disconnected
[ 31293.489] (--) NVIDIA(GPU-0): DFP-2: Internal DisplayPort
[ 31293.489] (--) NVIDIA(GPU-0): DFP-2: 960.0 MHz maximum pixel clock
[ 31293.489] (--) NVIDIA(GPU-0): 
[ 31293.489] (--) NVIDIA(GPU-0): DFP-3: disconnected
[ 31293.489] (--) NVIDIA(GPU-0): DFP-3: Internal TMDS
[ 31293.489] (--) NVIDIA(GPU-0): DFP-3: 330.0 MHz maximum pixel clock
[ 31293.489] (--) NVIDIA(GPU-0): 
[ 31293.489] (--) NVIDIA(GPU-0): DELL P2715Q (DFP-4): connected
[ 31293.489] (--) NVIDIA(GPU-0): DELL P2715Q (DFP-4): Internal DisplayPort
[ 31293.489] (--) NVIDIA(GPU-0): DELL P2715Q (DFP-4): 960.0 MHz maximum pixel clock
[ 31293.489] (--) NVIDIA(GPU-0): 
[ 31293.490] (--) NVIDIA(GPU-0): DFP-5: disconnected
[ 31293.490] (--) NVIDIA(GPU-0): DFP-5: Internal TMDS
[ 31293.490] (--) NVIDIA(GPU-0): DFP-5: 330.0 MHz maximum pixel clock
[ 31293.490] (--) NVIDIA(GPU-0): 
[ 31293.490] (--) NVIDIA(GPU-0): Idek Iiyama PL2888UH (DFP-6): connected
[ 31293.490] (--) NVIDIA(GPU-0): Idek Iiyama PL2888UH (DFP-6): Internal DisplayPort
[ 31293.490] (--) NVIDIA(GPU-0): Idek Iiyama PL2888UH (DFP-6): 960.0 MHz maximum pixel clock
[ 31293.490] (--) NVIDIA(GPU-0): 
[ 31293.491] (--) NVIDIA(GPU-0): DFP-7: disconnected
[ 31293.491] (--) NVIDIA(GPU-0): DFP-7: Internal TMDS
[ 31293.491] (--) NVIDIA(GPU-0): DFP-7: 330.0 MHz maximum pixel clock
[ 31293.491] (--) NVIDIA(GPU-0):

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https://bugs.launchpad.net/bugs/1295267

Title:
  Windows change Monitor/Desktop after screen lock

Status in Unity:
  Fix Released
Status in Unity 7.1 series:
  Fix Released
Status in compiz-plugins-main package in Ubuntu:
  Confirmed
Status in unity package in Ubuntu:
  Triaged

Bug description:
  I run a dual monitor configuration, with one portrait and one
  landscape.

  I nearly always have multiple applications open in multiple windows
  across both monitors and all virtual desktops.

  When I lock the screen and then unlock, my application windows will
  move from their original position.

  Sometimes they are in completely random positions;

  Other times they seem to get the monitors confused, and rather than
  being in the top half of the portrait monitor they are on the top half
  of the landscape monitor;

  Sometimes it is only a new desktop, but the monitor position is the
  same;

  Sometimes it is the same desktop, but on the other monitor.

  Description:	Ubuntu 13.10
  Release:	13.10

  What I expect to happen: When I unlock my computer, all the windows
  are in the same position on the same monitor and desktop as I left
  them.

  What actually happens: When I unlock my computer, some or all of the
  windows have been changed to a random position on a random monitor
  and/or desktop.

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References

[Bug 1295267] [NEW] Windows change Monitor/Desktop after screen lock
From: Chris Burrell, 2014-03-20