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en:c2_forcergb [2016/12/15 16:45] joy.cho [HDMI Force RGB Option] |
en:c2_forcergb [2016/12/20 07:46] joy.cho [HDMI Force RGB Option] |
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========= HDMI Force RGB Option ======= | ========= HDMI Force RGB Option ======= | ||
- | * Ubuntu : Version should be 3.14.79-94 (Nov 21 2016) or higher. | + | <WRAP center round important> |
- | * Android : Version should be 3.10.104-175 (Nov 21 2016) or higher. | + | * Ubuntu : The available version should be the one released after Jun 20, 2016. |
- | + | * Android : Android Marshmallow v1.2 (Dec 19, 2016) or higher version is available. | |
+ | </WRAP> | ||
===== Issue Brief ===== | ===== Issue Brief ===== | ||
With some TV monitors, there is a bug in their HDMI implementation that sometimes trigger the selection of the wrong colorspace in a magenta/green display.\\ | With some TV monitors, there is a bug in their HDMI implementation that sometimes trigger the selection of the wrong colorspace in a magenta/green display.\\ | ||
+ | |||
+ | {{:en:c2_forcergb_1.png?600}} \\ | ||
+ | http://forum.odroid.com/viewtopic.php?f=141&t=20697#p137351 | ||
+ | |||
It looks TV reports that is capable of YUV422 or YUV444 but it's not indeed.\\ | It looks TV reports that is capable of YUV422 or YUV444 but it's not indeed.\\ | ||
- | To avoid this situation, you can use **forcergb** option to set COLORSPACE_SPACE_RGB444 forcely. | + | To avoid this situation, you can use **forcergb** option to set COLORSPACE_SPACE_RGB444 forcibly. |
- | Here are the more investigations and discussions in ODROID Forum. | + | Here are more investigations and discussions in ODROID Forum. |
* http://forum.odroid.com/viewtopic.php?f=144&t=21780&hilit=forcergb | * http://forum.odroid.com/viewtopic.php?f=144&t=21780&hilit=forcergb | ||
* http://forum.odroid.com/viewtopic.php?f=141&t=21737 | * http://forum.odroid.com/viewtopic.php?f=141&t=21737 | ||
* http://forum.odroid.com/viewtopic.php?f=144&t=20415&p=145208#p145208 | * http://forum.odroid.com/viewtopic.php?f=144&t=20415&p=145208#p145208 | ||
- | {{:en:c2_forcergb_1.png?600}} | ||
- | http://forum.odroid.com/viewtopic.php?f=141&t=20697#p137351 | ||
===== How to set boot.ini to activate forcergb ===== | ===== How to set boot.ini to activate forcergb ===== | ||
To activate it, add **hdmitx=forcergb** in bootargs. | To activate it, add **hdmitx=forcergb** in bootargs. |