Blurry display - disper choosing refresh rate of 59.9 over 60.0

Bug #1230259 reported by Sigbjorn Lie on 2013-09-25
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
disper
Undecided
Unassigned

Bug Description

Dipser chooses 59.9 refresh rate over 60.0, for my primary display, causing this display go blurry.

This is the output when I have set resolution manully using nvidia-settings:
$ xrandr
Screen 0: minimum 8 x 8, current 3840 x 1200, maximum 16384 x 16384
DVI-I-0 disconnected (normal left inverted right x axis y axis)
DVI-I-1 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
   1920x1200 60.0*+ 59.9
   1600x1200 60.0
   1280x1024 75.0 60.0
   1152x864 75.0
   1024x768 75.0 60.0
   800x600 75.0 60.3
   640x480 75.0 59.9
DP-0 connected 1920x1200+1920+0 (normal left inverted right x axis y axis) 518mm x 324mm
   1920x1200 60.0*+
   1600x1200 60.0
   1280x1024 75.0 60.0
   1152x864 75.0
   1024x768 75.0 60.0
   800x600 75.0 60.3
   640x480 75.0 59.9
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)

And this is after running disper:

$ sudo /opt/disper/bin/disper -e -r auto -d auto --plugins=notify,debug -v
Enabled plugins: notify debug
NVidia kernel driver version: 319.32
backend: XRandR
auto-detected displays: DVI-I-1, DP-0
resolutions of DVI-I-1: 640x480, 800x600, 1024x768, 1152x864, 1280x1024, 1600x1200, 1920x1200
resolutions of DP-0: 640x480, 800x600, 1024x768, 1152x864, 1280x1024, 1600x1200, 1920x1200
preferred resolutions for displays: DVI-I-1: 1920x1200, DP-0: 1920x1200
DVI-I-1: available refresh rates for resolution 1920x1200: 59, 59
DVI-I-1: selecting XRandR mode #1: 1920x1200 59Hz
DP-0: selecting XRandR mode #0: 1920x1200 59Hz
Executing hook: /opt/disper/share/disper/hooks/notify.sh -e -r auto -d auto --plugins=notify,debug -v
Executing hook: /opt/disper/share/disper/hooks/debug.sh -e -r auto -d auto --plugins=notify,debug -v
Disper hook environment for stage: switch
  DISPER_BB_RESOLUTION=3840x1200
  DISPER_VERSION=0.3.1
  DISPER_DISPLAYS=DVI_I_1 DP_0
  DISPER_LOG_LEVEL=20
  DISPER_STAGE=switch
  DISPER_LAYOUT=right
  DISPER_RESOLUTION_DVI_I_1=1920x1200
  DISPER_RESOLUTION_DP_0=1920x1200

$ xrandr
Screen 0: minimum 8 x 8, current 3840 x 1200, maximum 16384 x 16384
DVI-I-0 disconnected (normal left inverted right x axis y axis)
DVI-I-1 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 520mm x 320mm
   1920x1200 60.0 + 59.9*
   1600x1200 60.0
   1280x1024 75.0 60.0
   1152x864 75.0
   1024x768 75.0 60.0
   800x600 75.0 60.3
   640x480 75.0 59.9
DP-0 connected 1920x1200+1920+0 (normal left inverted right x axis y axis) 518mm x 324mm
   1920x1200 60.0*+
   1600x1200 60.0
   1280x1024 75.0 60.0
   1152x864 75.0
   1024x768 75.0 60.0
   800x600 75.0 60.3
   640x480 75.0 59.9
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)

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