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Parallella Community • View topic - hdmi working

hdmi working

Any technical questions about the Epiphany chip and Parallella HW Platform.

Moderator: aolofsson

hdmi working

Postby magorian » Thu Dec 26, 2013 5:50 am

>> magorian wrote: So the Parallella hdmi applies screen blanking but the monitor only shows "Not Optimum mode: recommend 1920x1280".
> shodruk wrote: Parallella's screen resolution is 1024x768 for now, so you have to use a monitor that supports 1024x768. Please try to boot without connecting HDMI,
> then connect HDMI after booting.

Well, given the extreme fragility of the uHDMI and uUSB connectors used with stiff adaptors, that seems like a recipe for tearing them out (one key/mon uUSB already tore off the board and I wasn't pushing the adapter cable hard). Connecting the hdmi after booting, one board has frozen text output on the uHDMI and the other nothing, so I would say that my uHDMI output seems nonfunctional in the stock release out of the box, and you have to use ssh and vnc.

Dan
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Re: hdmi working

Postby shodruk » Thu Dec 26, 2013 11:05 am

Sometimes it requires several retries.
I'm using an HDMI switcher and an USB switcher. (selecting another channel during booting)
Please consider using these items.
They are very convenient.
Shodruky
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Re: hdmi working

Postby aolofsson » Thu Dec 26, 2013 1:55 pm

We are working on the HDMI issue, agree that it should boot out of the box without issues. This is a high priority.

Are you saying one of the connectors on the Parallella broke? Can you post a picture? We probably have 1000 inserts at this point and haven't seen a problem, but if there is a problem we need to fix it quickly!

Thanks,
Andreas
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Re: hdmi working

Postby shodruk » Thu Dec 26, 2013 2:58 pm

I don't think this is a HDMI issue, because it works very stable (including HDMI and USB devices) once it boots correctly.
Probably this is a boot sequence issue.
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Re: hdmi working

Postby magorian » Thu Dec 26, 2013 5:04 pm

moving broken connector discussion to a new thread.

I will try using an hdmi/usb switcher for testing, tho it drives my costs for supplying clusters to the researchers up by almost $200 8-<

Dan
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Re: hdmi working

Postby shodruk » Thu Jan 02, 2014 8:39 pm

Shodruky
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