View source for HDMI Configuration

[[Category: RaspberryPi]]

[http://elinux.org/R-Pi_Troubleshooting#Display http://elinux.org/R-Pi_Troubleshooting#Display]

[http://elinux.org/R-Pi_ConfigurationFile http://elinux.org/R-Pi_ConfigurationFile]

[http://elinux.org/RPi_config.txt http://elinux.org/RPi_config.txt]

[http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=7693 http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=7693]


Example Problem:
1920 x 1080 @ 60Hz Monitor
Image format provided by RasPi, as above. Reported by monitor and by RasPi.

<pre>
tvservice -s
</pre>

Reduced image size.

lxde -> Preferences -> Monitor reports 1824 x 984

Solution (Information obtained from above references):
Generated a /boot/config.txt file
added line

<pre>
disable_overscan=1
</pre>

This put the image at full 1920 x 1080. This also put the image right to the edges; this is too close. Edited the config.txt to read.

<pre>
disable_overscan=1
overscan_left=5
overscan_right=5
overscan_top=5
overscan_bottom=5
</pre>

This gave the image a 5 pixel border.

Occasionally the RasPi reboots with a centralised colour reference square, but generally boots normally.

References above also give information as to disable the RasPi HDMI Hot-Plug Detection which will enable the HDMI output even if no Monitor is detected.