Hi Denys ! >> The information of available channels is read from a >> description block transferred via an I2C interface on HDMI, >> during setup. This allows the devices to adapt it's >> functionality. In case this information does not match your >> needs the devices may enable or disable the wrong channels. > >Yes, that's what I suspect is happening.
https://en.wikipedia.org/wiki/Digital_Visual_Interface This Wikipedia article and sibblings describe pretty good, the difference between SVGA, DVI, HDMI and DisplayPort. >The TV thinks that audio is there on HDMI input >when it takes my notebook's DisplayPort output signal >(and maybe there *is* audio, but it's all zeros). The problem is wrong firmware of your notebook with the DisplayPort. It says 'Hey display, I'm a full functioning digital interface' and then leaves out the digital audio information and sends only digital video information. This leads to the problems you describe. The Philips display switches correct to digital audio mode, as your notebook told, but than don't receive audio information. The best solutions for this kind of trouble are converter boxes, not only adapter cables. Many such converter boxes have the possibility to pass in analog audio and then encode this to digital audio on a HDMI channel. >It should be not too difficult to override this >auto-detection in firmware, that's why I wanted >to ask firmware writers to implement that. If you ever find a firmware developer, willing to neglect his written contract to not tell anything about Philips product internals. They have very restrictive developer contracts. I was once as a discussion to work for a project on Philips, but quit, as I received the contract they wanted to be signed. -- Harald _______________________________________________ busybox mailing list [email protected] http://lists.busybox.net/mailman/listinfo/busybox
