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HDMI - Unstable [SOLVED]
Posted:
Wed Oct 01, 2014 6:33 am
by SYOUYU
Hi All,
Parallella can boot now, but displaying through HDMI is not stable.
1. sometime black-out the displaying,
2. displaying size does not fit onto the HDMI display
Too large displaying can not make log-in...
It is probably display issue, has anyone idea to solve it?
Regards,
SYOUYU
Re: HDMI - Unstable
Posted:
Wed Oct 01, 2014 6:59 am
by 9600
Sounds like a display issue and something that may be resolved by forcing a different resolution:
http://elinux.org/Parallella_Linaro_Nan ... o_1280x720Regards,
Andrew
Re: HDMI - Unstable
Posted:
Wed Oct 01, 2014 9:18 am
by SYOUYU
Hi Andrew-san,
I checked the boot after 30min or more from the posting this thread.
Boot did not make the issue, but after 5min, black-out was frequently occurred and resolution issue was also happen.
It seems that a heating is issue, although I use a standard heat-sink.
Is it possible to make the issue by the temperature?
Anyway, USB is also issue now, not working.
I used bus-powered USB-Hub, and removed this hub and directly connected mouse to the board, but did not work
There is many threads about the USB issue, which one is best answer, or is there summarized thread for solution?
Re: HDMI - Unstable
Posted:
Thu Oct 02, 2014 6:52 am
by SYOUYU
I use self-powered usb hub now,
it makes possible to use usb peripherals,
so I login to ubuntu on Parallella board.
However, heating issue makes black-out of displaying...
Re: HDMI - Unstable
Posted:
Thu Oct 02, 2014 7:53 am
by greytery
Re: HDMI - Unstable
Posted:
Thu Oct 02, 2014 8:42 am
by SYOUYU
Re: HDMI - Unstable
Posted:
Thu Oct 02, 2014 10:04 am
by SYOUYU
Anyway, where is the HDMI chip on the board?
Re: HDMI - Unstable
Posted:
Thu Oct 02, 2014 5:50 pm
by greytery
The HDMI chip is the square Analog Devices ADV7513 IC next to (below) the Zynq. Look for the 'U26' label on the board.
Cheers,
Re: HDMI - Unstable [SOLVED]
Posted:
Mon Oct 06, 2014 8:27 am
by SYOUYU
I removed the thermal pads, and put new pads to epiphany, zynq, hdmi chips.
In addition, I replaced display with new one.
The displayig is stable and does not brinking as black-out.
I write this message with firefox on parallella board.
Thanks and Regards,
SYOUYU
Re: HDMI - Unstable
Posted:
Mon Oct 06, 2014 12:13 pm
by aolofsson
SYOUYU,
Fantastic to hear! b
tw. How are you situating the Parallella? Flat on the table or standing up on the side?
Andreas