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Old 04-29-2016, 12:24 AM   #1
mwkemo1
LQ Newbie
 
Registered: Jun 2013
Posts: 4

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Kernel > 4.2 TV refresh rate help


Hey,

I have a problem with my TV plasma connected to intel onboard graphics card which uses i915 driver on kernel version above 4.2. My second monitor is working as expected, but TV plasma is showing black screen in boot mode and in graphic mode. The problem seems to be in refresh rate settings for plasma TV. Setting the refresh rate to 24Hz on Full HD resolution with xrandr seams to correct the problem in graphical mode. I want to use 60Hz refresh rate on Full HD resolution. On kernel version 4.2 everything is working as expected but when I try to update kernel and use any version above 4.2 the probem appers.
I'm using vfio kernel from arch AUR if that makes any difference.

Here is my xrandr output with kernel 4.5.1-1:
Code:
xrandr 
Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 32767 x 32767
HDMI1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 698mm x 392mm
   1920x1080     50.00 +  60.00    59.94    24.00    23.98  
   1920x1080i    60.00*   50.00    59.94  
   1280x720      60.00    50.00    59.94  
   720x576       50.00  
   720x576i      50.00  
   720x480       60.00    59.94  
   720x480i      60.00    59.94  
   640x480       60.00    59.94  
HDMI2 disconnected (normal left inverted right x axis y axis)
VGA1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 600mm x 340mm
   1920x1080     60.00*+
   1680x1050     59.95  
   1400x1050     59.98  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.89  
   1280x800      59.81  
   1152x864      75.00  
   1280x720      60.00  
   1024x768      75.08    60.00  
   832x624       74.55  
   800x600       75.00    60.32    56.25  
   640x480       75.00    60.00  
   720x400       70.08  
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
Write now I'm using 1920x1080i resoulution with 60Hz but this resolution gives me flickering image.

Any help is appreciated
 
  


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