Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
hdmi_mode [2015/04/06 20:10]
admin 		hdmi_mode [2016/10/06 17:23] (current)
admin [Manual configuration:]
Line 1: Line 1:
 +=====HDMI Mode=====
 +
 +====Change the HDMI mode to a DMT====
 +
 +3D grafics in Open GL and the OMXPlayer sometimes run into conflicts and the HDMI output stops. The best solution until now is to set the HDMI mode in the configuration file on "mode_groupe=2". That means the Raspberry Pi starts allways in an DMT mode (Monitor Mode) and not in an CEA mode (TV Mode).\\
 +In:
 +  $ sudo nano /boot/config.txt 
 +uncomment the the hdmi_group to force the DMT mode
 +  hdmi_group=2
 +
 +Check the current HDMI state:
 +   $ tvservice -s
 +
 ---- ----
-**HDMI Mode** +====Manual configuration:====
-----+
  
-If the HDMI signal fails when playing a video, set the right HDMI Mode manually.\\+If the HDMI signal still fails when playing a video, set the right HDMI Mode manually.\\ 
 +[[http://www.raspberrypi.org/forums/viewtopic.php?f=28&t=7513]]\\ 
 +[[http://elinux.org/RPiconfig]]\\ 
 +[[http://en.wikipedia.org/wiki/Extended_Display_Identification_Data#CEA-861-E]]\\
  
 Check the current HDMI state: Check the current HDMI state:
Line 14: Line 29:
   $ tvservice –m DMT   $ tvservice –m DMT
      
-Choose the prefered mode, DMT work best with HDMI beamer and monitors:+Choose the prefered mode, DMT work best with HDMI beamer and monitors. Don't use any CEA mode:
   (prefer) mode 85: 1280x720 @ 60Hz 16:9, clock:74MHz progressive   (prefer) mode 85: 1280x720 @ 60Hz 16:9, clock:74MHz progressive
      
Line 26: Line 41:
 Low level changes for DMT 640x480  60 Hz would be: Low level changes for DMT 640x480  60 Hz would be:
   hdmi_group=2   hdmi_group=2
-  hdmi_mode=85 +  hdmi_mode=4 
-  + 
 +All modes are on: [[http://elinux.org/RPiconfig]]\\ 
 If nothing helps set the HDMI save mode to try to boot with maximum hdmi compatibility. This is the same as the combination of: hdmi_force_hotplug=1, hdmi_ignore_edid=0xa5000080, config_hdmi_boost=4, hdmi_group=2, hdmi_mode=4, disable_overscan=0, overscan_left=24, overscan_right=24, overscan_top=24, overscan_bottom=24 If nothing helps set the HDMI save mode to try to boot with maximum hdmi compatibility. This is the same as the combination of: hdmi_force_hotplug=1, hdmi_ignore_edid=0xa5000080, config_hdmi_boost=4, hdmi_group=2, hdmi_mode=4, disable_overscan=0, overscan_left=24, overscan_right=24, overscan_top=24, overscan_bottom=24
   hdmi_safe=1   hdmi_safe=1
  
-Reboot:+and reboot:
   $ sudo reboot   $ sudo reboot
-  + 
 +----