Tags:
create new tag
, view all tags
iRulu 10.1" Model AX105 with Android 4.2
iRulu 9" Model AX922 with Android 4.2.2

HDMI

UPDATE: Contrary to earlier information I put here, the AX922 does have an HDMI port. (And, it takes a mini HDMI cable.) See the AX922 HDMI saga, below.

UPDATE: I took the iRulu to my friend's house, and connected it to an HDMI input on her HDTV. HDMI worked instantly (that is, as soon as we switched the HDTV to use the HDMI input), and seemed to display everything on both the iRulu screen and on the HDTV screen. We did try watching one movie, and that worked fine. I suspect that movie did not use HDCP (as it was a movie freely available on the YouTube app--in fact, it was titled "Atomic Train" (and, in fact, I couldn't stand to watch it to the end)).

The AX922 HDMI Saga (in bullet points)

  • Before ordering, I saw conflicting information about whether or not the AX922 had an HDMI port
  • So, I wrote to iRulu sales and campus111 to get clarification.
  • campus111 never responded
  • iRulu sales said it had an HDMI port and it required a micro HDMI cable
  • I ordered an AX922 (from campus111 via the Newegg marketplace) and a micro HDMI cable (from a source on eBay)
  • I received the AX922 first, when I received the micro HDMI cable, it was obvious that it was too small
  • I decided to try the mini HDMI cable I had for my AX105--it did not seem to fit--it would not go in and I did not want to force it
  • I emailed iRulu sales, and, after some back and forth (e.g., they asked for a photograph), they stated the AX922 definitely had an HDMI port, and it was the port that I had been trying to fit the cable into--they thought there might be a quality problem
  • so, I decided to look closer and try again. It looked like there was no place at the top of the connector for the metal shell to fit, so I tried wedging and wiggling the metal shell into that area to try to make space--I got it in and it works.

My thanks to Stephon at iRulu sales for his diligence in helping me get through this problem. I need to write to Stephon and update him on the status, but my regular email machine (s17) broke down, and I'm building a new machine in its place.

OLDER NOTES

The HDMI jack on the iRulu AX105 is a mini HDMI jack. I found a short mini HDMI male to (full size) HDMI female cable on ebay and I ordered it.

I have neither a monitor or TV at this time with HDMI inputs. I do have two monitors with DVI inputs. I found a (full size) HDMI male to DVI female cable and ordered that.

After both cables arrived, I started experimenting to try to get HDMI to work. So far, no luck, but some notes:

  • When I first plugged the HDMI cable into a DVI monitor and the iRulu, I saw no indication of anything. The monitor was displaying the message ~"No cable connected".

  • I rebooted the iRulu, and, when the iRulu came up, the ~"No cable connected" message disappeared, but the screen remained black.

  • So, I tried another monitor. This time, I got some very fuzzy / unreadable blotches of color, and later saw some "interference lines" (mcow (= my choice of words)) scrolling on the screen.

So, I believe that the iRulu is outputting something on the HDMI jack, but either the monitor or cables can't handle it. (Next week, I will take the iRulu to a friend's house who has a TV with HDMI inputs and try it there.)

When the HDMI didn't work, I decided to try to do some reading on it.

It sounds like in Android 4.2 (Jelly Bean), the HDMI output is always on, as opposed to Android 4.0 (Ice Cream Sandwich) where the HDMI output is not always on, and, in fact, can't be used to put "commercial video" (mcow) onto an HDMI device.

For Android 4.0, the recommended way to get HDMI working is to use the Gallery application and display some of your own (i.e., non-commercial) videos or pictures and then use something in the configuration to switch from the built-in display to the HDMI device.

Android 4.2 did not come with a Gallery application, so I went looking for it. I found Gallery KK (iirc), installed it, and then turned on the front video camera in hopes of getting that displayed on the DVI monitor. No luck, I just continued to see the interference lines I mentioned earlier.

I guess some (or all) sources of commercial videos who may be willing to let you view video on a tablet or phone do not want you to view that same video on a potentially larger HDMI device. They may use a protocol known as HDCP (High-bandwidth Digital Content Protection) to prevent that.

I'll update this after I try connecting to a digital television with HDMI inputs next week.

See:

Contents

Text

Contributors

  • () RandyKramer - 2014-02-28
  • If you edit this page: add your name here; move this to the next line; and if you've used a comment marker (your initials in parenthesis), include it before your WikiName.

Revision Comment

%SECTION{last_revision}%
  • %DATE% —

Page Ratings

Edit | Attach | Watch | Print version | History: r6 < r5 < r4 < r3 < r2 | Backlinks | Raw View | Raw edit | More topic actions
Topic revision: r6 - 2014-11-08 - RandyKramer
 
  • Learn about TWiki  
  • Download TWiki
This site is powered by the TWiki collaboration platform Powered by PerlCopyright 1999-2017 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding WikiLearn? WebBottomBar">Send feedback
See TWiki's New Look