Post Last Edited by roses2at at 2014-10-3 10:14 |
Reply 6# ChrisP
HDMI-DVI may be a limitation, but I'm surprised that AV is as well.
Why would HDMI-DVI be a limitation, do you think? Isn't it more likely that if you have a new adapter cable but an old monitor with a DVI input (as in my case), that you would suspect the screen is at fault for not processing the signal correctly? Because it was designed/built at a time when perhaps the HDMI concept was unheard of or not fully developed and therefore HDMI-DVI adapters were also unknown.
The reason I ask is like I said, I did try my cable into the DVI port of another newer monitor and 4.2 booted OK. I did try 4.4 but I think I didn't know or fully understand about the time lag thing and I wasn't patient enough with it.
Now I've had a bit of time to mull it over, I think the chances of 4.4 working via AV are very slim. I was frankly very surprised to get a picture on my old TV from 4.2 but I was so annoyed that it wouldn't work via HDMi-DVI it was a last-chance saloon type effort to try it that way. But the colours and resolution were so poor that it was difficult to read any text, either near the screen or from far away.
I wonder if the programmers for 4.4 have put in any code for AV output? Possibly, but it would be a bit like fitting the wheels from a Trabant onto a Ferrari F40. Sure, it would go and maybe could even be driven for a few metres but anything more would be impossible.
I've got my known-to-be-working 4.4 install hooked up to my TV right now via the composite AV port, but am only getting some occasional single white random horizontal flickering lines on the screen, nothing at all resembling a picture.
I've tried booting via HDMI-HDMI, then swapping the cables over, then booting with both cables in and then taking the HDMI out, then booting with only the AV connected. But in that last case, if I then plug in the HDMI, I do get a picture on my monitor (doesn't matter if I plug or unplug the AV). So it seems as if autodetect for the AV video port has not been coded or enabled (or more likely, there are no AV drivers at all).
Extra question; does anyone have the occasional 'black screen' issues as mentioned in following quote from the ReadMe, especially during boot? (And I don't mean the 'Sleep function' which is set for me to the maximum 30 mins - very annoying in 4.4 that you can't turn it off altogether as in previous Android versions.)
Screen may go black, you need to press the Power switch on the device to turn on the screen.
That advice has no effect on my system, so I am usually forced to press the Reset switch.