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HDMI Adapter Problems/Flickering Output

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By NightFire123, Senior Member on 19th August 2011, 09:13 PM
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5th September 2011, 05:54 AM |#21  
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I had the adapter for over a month and never had the flickering problem on my 55" Samsung 3D LED TV. The only problem is the scaling. It doesnt really fit the screen.
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5th September 2011, 05:06 PM |#22  
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Can also report that I'm now having problems with the adapter. Previously I've only used it for short moments at a time so I didn't notice it back then but now that I tried watching a movie, it was pretty terrible.
6th September 2011, 10:28 AM |#23  
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I'm also having the same issues

i just got mine 30 mins ago, pluged it in, and instantly, there was the flickering

and it only scales to 720p

i've got EU 3G model, with custom ROM...

VERY dissapointed
6th September 2011, 11:18 AM |#24  
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Quote:
Originally Posted by LSL1337

I'm also having the same issues

i just got mine 30 mins ago, pluged it in, and instantly, there was the flickering

and it only scales to 720p

i've got EU 3G model, with custom ROM...

VERY dissapointed

720p is normal cause it only mirrors the tabs screen. indeed its 1200x 800 not 720p.
Only if you playback e.g. a full hd youtube Video or a Video with the Stock player it scales up to 180p.
6th September 2011, 12:51 PM |#25  
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I've been working with pershoot on this and he might have a fix for it. My initial testing has been promising but it's too early to say for sure.
8th September 2011, 12:23 AM |#26  
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Quote:
Originally Posted by CazeW

I've been working with pershoot on this and he might have a fix for it. My initial testing has been promising but it's too early to say for sure.

For those of you having the flickering issue, give pershoots kernel (here) a test run. After intensive testing with him, he managed to fix the flickering almost completely for me and my adapter is now useable.
10th September 2011, 02:49 PM |#27  
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0910 release includes this.

let me know if it makes this beter for all of you that had this incessant flicker issue.
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20th September 2011, 06:16 PM |#28  
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I dont think that this is software related, otherwise mine woundnt work with the 7" dock.
20th September 2011, 06:19 PM |#29  
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Quote:
Originally Posted by NightFire123

I dont think that this is software related, otherwise mine woundnt work with the 7" dock.

At least for me, pershoots kernel improved it a lot and I can new use mine. Give it a try.

Also, it could be software related if the 7" dock uses an older MHL chip that has better driver support than the one in the adapter (this is just guessing though).
8th October 2011, 05:58 PM |#30  
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Me too - just got the HDMI adaptor.

Tried with two cables on two TVs both flicker about every 4 seconds with a slight break in sound. One TV loses sync and the picture disappears for a couple of seconds and then comes back. The other just glitches with a slight loss in sound.

I have tried turning it on from cold unplugging and plugging it back in, battery at 50% battery at 100%.

My guess is that the problem is with the cheap switched mode power supplies that they use for these devices. The electrical noise introduced is not going to help get high frequency signals to a TV.

This would tie in with why battery charge level has an impact - low battery = more noise as the charger pumps out more current.

It is also a real pain that the charger has to be plugged in as it destroys so much of the portability and introduces so many extra cables.

Can we get any more feedback on if the custom rom by pershoot helps reliably ?
10th October 2011, 09:52 AM |#31  
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I've just ordered a dock for a galaxy tab 7" which I have been told does not have the problem. I'll let you know what happens as it will shed some light on if it is the adaptor or the tablet.

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