HDMI as primary display - Android Q&A, Help & Troubleshooting

Basics. I have a Coby MID-7042 tablet. The touch panel cracked on it so it is useless and cost to much to get fixed. With that said I am now using the tablet as an Android TV. I have hooked the tablet up to my HDMI TV and am using a mouse on the USB port to control the tablet. The thing is I am thinking of ripping the tablet apart and removing the screen and battery and other items. The thing is if I remove the LCD screen then I cannot get into recovery if needed and I cannot see the system booting on the HDMI connection.
Is there any way to force the HDMI connection to be the primary or will this happen naturally when the LCD panel is disconnected?
Since Android is Linux shouldn't there be a value somewhere that allows the selection of what screen is the primary. I know this can be done since there are quite a few Android TV boxes out there that use the HDMI connection as the primary display.
If you can help at all that would be great!
Thanks

Hi,
I have the same problem. Searched Google and XDA forum, no answer found...
reddragon72 said:
Basics. I have a Coby MID-7042 tablet. The touch panel cracked on it so it is useless and cost to much to get fixed. With that said I am now using the tablet as an Android TV. I have hooked the tablet up to my HDMI TV and am using a mouse on the USB port to control the tablet. The thing is I am thinking of ripping the tablet apart and removing the screen and battery and other items. The thing is if I remove the LCD screen then I cannot get into recovery if needed and I cannot see the system booting on the HDMI connection.
Is there any way to force the HDMI connection to be the primary or will this happen naturally when the LCD panel is disconnected?
Since Android is Linux shouldn't there be a value somewhere that allows the selection of what screen is the primary. I know this can be done since there are quite a few Android TV boxes out there that use the HDMI connection as the primary display.
If you can help at all that would be great!
Thanks
Click to expand...
Click to collapse

Related

Possible Car install

Hi, im looking at the posibility of installing one of these into the dash of my Jaguar XK8 to use for GPS, media playback, OBD etc. Most of it shound be relatively straightforward looking around the forums.
Sound wise I can link to my head units auxilary input.
GPS looks possible using a bluetooth GPS.
OBD again using a bluetooth device in conjuction with Torque in android.
Possible link up for reversing camera if i use a USB tv tuner maybe?
Power wise i can use a car charger hidden away inside the dash. Question though, will the unit automatically power on if it receives an AC charge in the case where the battery has run flat and the device has turned off beyond being in a suspend mode?
Is pretty much everything controllable on screen? My current plan would leave no access to hard buttons.
USB host - can I connect to a laptop hard drive using a usb to ide adapter? Just thinking for my 100gb media hard disc.
Think that is most of the stuff covered really.
hotrodder said:
Possible link up for reversing camera if i use a USB tv tuner maybe?
Click to expand...
Click to collapse
Yes, root your tablet, use any by linux kernel supported device and some development skills and you're ready to go. idk a out-of-the-box solution.
hotrodder said:
Power wise i can use a car charger hidden away inside the dash. Question though, will the unit automatically power on if it receives an AC charge in the case where the battery has run flat and the device has turned off beyond being in a suspend mode?
Click to expand...
Click to collapse
I got my A101 just for development stuff and put the charger in a power strip with a switch. when I turn the power strip on, the A101 just starts up
hotrodder said:
Is pretty much everything controllable on screen? My current plan would leave no access to hard buttons.
Click to expand...
Click to collapse
the only button would be the power button for shutdown or reboot or the volume control. you would have to have a widget or an app for volume control.
hotrodder said:
USB host - can I connect to a laptop hard drive using a usb to ide adapter? Just thinking for my 100gb media hard disc.
Click to expand...
Click to collapse
yesno, depends on how much power the harddisc draws. but if you like to attach a camera or livetv adapter as well you have to use an powered usb hub anyway
Wow, thanks for your response... looks like it will do anything that i originally wanted really, which is good news!
Im looking at maybe getting a 7 inch archos - what has prompted this is that I just made the move to android from a windows mobile and so far im dead impressed with it. I also previously had a full windows PC in a car that was unfortunately damaged. Im just looking at fitting something into my replacement car and i thought that a full windows PC is less ideal than an android machine.
I still have my old USB GPS device, which I believe has linux drivers - am I right in saying that if it has linux drivers then it may be possible to get it working under android?
For the most part i cant see the lack of hard keys being a problem. Volume up / volume down will be taken care of by my head unit - so i can set and forget the volume (should be able to set it on screen initially yeah?). Reboot can be handled on screen as well - so far I havent experienced android crashing or freezing, but is this something that tends to happen? If so i guess that will be my biggest problem point.
Also - this is a real long shot - does anyone know if the Archos 70 IT's that are brought as 8gb still have internal laptop hard drive connectors - if so i can just drop in an internal hard drive rather than use usb host.
After having a look at units in store I decided to go with the G9 Archos 80. So far im liking it a lot, its speedy, has a full size usb port on the back which allows me to access my laptop hard drive via a USB -> ide adapter and turns on as soon as it gets power - and has working sat nav. 90% of my goals are already met - just needs some soft finessing and installation in car. Just hoping someone roots the thing soon so I can get her to shutdown / reboot via an app.
Jaguar......xD

[Q] G Tab HDMI Dock Question

I have the G Tablet with the Zpad dock running Vegan. Love the ROM and it runs great. I just recently hooked it up via HDMI to my LCD TV (why I waited who knows), but I have a basic question:
Can I turn off the G Tab display while docked?
I want to hook up a bluetooth keyboard and basically pass signal to the TV, and I don't want the unit display on if possible. No big deal, but just wondering if any of you guys have a solution?
Thanks!
Not as far as i know. Im sure somone who knows java could write an app for it.
But why do you want the display off? You could put it in a media cabinet or maybe behind your tv if its the light that bothers you.
jaymaj said:
I have the G Tablet with the Zpad dock running Vegan. Love the ROM and it runs great. I just recently hooked it up via HDMI to my LCD TV (why I waited who knows), but I have a basic question:
Can I turn off the G Tab display while docked?
I want to hook up a bluetooth keyboard and basically pass signal to the TV, and I don't want the unit display on if possible. No big deal, but just wondering if any of you guys have a solution?
Thanks!
Click to expand...
Click to collapse
can you help me. I have the dock and my gtab (running smooth_bean rom). but when I plugged in the HDMI my tv wouldnt recognize it. what settings do we have to change on the rom so the tv recognizes the tablet??? Thanks

Question about hdmi out and aspect ratio/resolution

Every time I plug the TF to the tv I lose about half an inch on all sides. Don't see any hdmi settings and I tried messing with the tv settings. Anyone know how I can get it to fit properly
cyi1 said:
Every time I plug the TF to the tv I lose about half an inch on all sides. Don't see any hdmi settings and I tried messing with the tv settings. Anyone know how I can get it to fit properly
Click to expand...
Click to collapse
Have you tried going through an a/v receiver using the hdmi inputs on it? If so, are the results better or worse?
I found nothing in the manual other than the mention of the micro hdmi port out.
What model is your TV?
What you are describing sounds like Overscan, not sure on the size of your TV but my TV has some Overscan depending on the source.
My Prime has not arrived yet, sorry I cannot help you further.
yea happened to me too, I ended up fixing it by changing some scan settings in my TV
Change your TV settings from HDTV to PC mode or something similar to that. I did that On my Philips 1080P LCD and its working perfectly now. Strange because my Samsung automatically adjusted for my tablet.
If you dont have a PC to HDTV setting then just mess around with the settings/ features. Most models have things to help you get the best display possible for your situation.

[Q] Viewsonic g tablet help SmoOth Bean 4.1.2 ver 1.5(Standard PlayStore) 160 DPI ROM

I bought a Viewsonic g tablet on sale a year and a half ago and until this day it meets the light. (It was only touched when purchased then back to the box)
I followed the instructions to the letter (new on this) and everything seems to be working, I have a Malata zpad dock DS-A002 supposed to be fully compatible with the g tablet and I placed the tablet on the dock, connected HDMI in the TV but nothing happens.
Don't see an option in settings to select output to TV.
Many thanks in advance.
Forgot to mention, tried this on the TV which is an LG and monitor which is a Hanns-G
I have to say that this is a first so far. When I read this I went ahead a connected up my dock which is the same make and model as yours to my TV and it works. HDMI is sometimes a pain especially with the newer TV's that are out. You also got to have the dock powered up if you haven't done that. If the power cord is connected and the tablet displays the dock clock then connect the HDMI to the dock with the TV turned off. After connection is made turn on the set and make sure you are on the proper input. It should work, but if not try a different TV.
Sent from my Super BadA$$ Bionic.
Thanks for the reply
The LCD TV is a couple of years old, the LCD monitor is 3ish years old
My mother has a 5yr old LCD TV, that's another TV I could test on
The dock is powered up using the charger that came with the gTab
The tablet displays the dock clock when placed on the dock
I've tried different combinations:
Dock powered up, TV off and plugin cable, gtab on then place on dock, turn TV on
Dock powered up, TV off and plugin cable, gtab off then place on dock and power on, turn TV on when gtab is on the dock clock
Dock powered up, TV on and plugin cable, gtab on then place on dock
Dock powered up, TV on and plugin cable, gtab off then place on dock and power on
TV detects HDMI when the gtab is placed on the dock, but after 3-5 secs says no signal meaning it does detect HDMI (shows up as an option, I've tried on all 3 HDMI inputs btw) but it doesn't show up an image.
I've tried these methods in the TV and the monitor, nothing
Doesn't make sense to me since everyone in the thread hasn't had this issue, should be plug-and-play right?
http://forum.xda-developers.com/showthread.php?t=1900562
Should I backup the current install and go back to the stock crappy ROM just to test it out? (Wipe everything as instructed before doing so?)
Thanks
No since in going all the way back to stock to test it out. Have you by chance tried a different HDMI cable. You might have a faulty connection or even a dirty connection will make it loose its connection. You may also want to check to see if the TV has a default native setting set. The gtablet will display a image like a PC I believe. Will have to connect it up again to see what res. the device puts out at default.
Alright find the link up solution. I tried different ways of connection all with failure to display on my TV with the exception of this. Try it and you will be satisfied.
1st. Place you dock near your TV with power cord and HDMI cable both connected. Don't connect other end of HDMI cable to TV just yet.
2nd. Have tablet turned on and fully booted up. Then place tablet on dock and leave the dock clock displayed.
3rd. Turn on TV and set the input to the HDMI connection you are about to connect to. Then connect HDMI to that input that is in TV and the display should reflect the device.
Let me know if this works. Thanks.
Sent from my SmoOth A$$ Gtablet
Hi, yes I tried 2 different cables, different ports, cleaned up (blow air) into the TV and and dock ports (dock is brand new never used from a year+ ago)
I couldn't find a default native setting on the TV.
Really sucks that there is an awesome ROM for the gtablet and I can't use it on the bigger screen, intention was to watch Netflix and movies, besides reading
The tablet is one of those projects that never happened and when I finally manage to get it going this happens...:crying:
Read the addon that I posted. It will connect if you connect it in that order.
Sent from my DROID BIONIC using xda app-developers app
Hi Nobe, it still doesn't work. I just don't get it.
TV recognizes the connection (shows as plugged-in) but says no signal.
Unfortunately monitor is not as advanced as a TV, simply says no signal.
Faulty dock? It charges fine
Thanks
Went to stock, and image shows up fine on TV
Is there something I could change, DPI,res? on the current SmoOth install (have backups) that could potentially fix the issue?
Thanks
exmagus said:
Went to stock, and image shows up fine on TV
Is there something I could change, DPI,res? on the current SmoOth install (have backups) that could potentially fix the issue?
Thanks
Click to expand...
Click to collapse
I keep mine at 160dpi. The issue is that you have to connect everything to the dock before connecting it up to the TV. For some strange reason the dock settings doesn't recognize the connections being made. The dock works fine it is the drivers I believe that are kernel related. If you power up the dock with the HDMI connected to it, then place tablet on the dock, then connect the HDMI to the TV's input with the TV on and turned to that input. Then it should display onto the TV without issues. Done this multiple times when this came up and this was the only way for me to get the dock to display the output of the tablet.
Sent from my SmoOth A$$ Gtablet
The thing is I did exactly as you said multiple times to be sure.
Using SmoOth image does not come up
Restored to stock ROM and image shows up fine
I'm going to try a fresh SmoOth install and see how it goes or is there any way to check the drivers or make adjustments to it?
Thanks
Any advice on checking the drivers?
Thanks
Actually the drivers are there and working the way they are suppose to be. I do believe that it might in the way it is communicating with the TV still. I am currently working on something that might help out, but I want to test it fully before suggesting it since most everyone doesn't use this feature.
Sent from my SmoOth A$$ Gtablet
It is really odd that doing the same process on the stock rom works.
Thanks a lot for the follow-up Nobe
Curious if anyone found a solution to this problem? I too have the exact same issue with my Gtab even after trying the solution posted with different cables and such. Stock rom works fine though.
I'm wondering if Nobe found something

Android Tablet as a second monitor?

Hi guys,
I have limited space at my place and I really cannot have another monitor hooked to my laptop 24/7. I need a solution that I can hook up when I need to edit on premiere and that I can remove when I´m not editing. I know there is a way to do this wireslessly with android tablets but it´s super slow and useless for editing. I need to know if there is any way to use an android tablet as a second monitor via USB or HDMI.
I know there is an app for Android called DSLR controller (or something like this) that allows you to mirror Canon EOS camera on your tablet or cell phone using a usb host cable (I´ve tested this on my cell phone and it actually works). For sure there must be a way to do something similar and use a tablet as a second monitor using a usb cable. I´m going to post this on android forum and see what comes up.
cheers
Rafa
Cheap Chinese Android Tablets as Monitors?
rawfa said:
Hi guys,
I have limited space at my place and I really cannot have another monitor hooked to my laptop 24/7. I need a solution that I can hook up when I need to edit on premiere and that I can remove when I´m not editing. I know there is a way to do this wireslessly with android tablets but it´s super slow and useless for editing. I need to know if there is any way to use an android tablet as a second monitor via USB or HDMI.
I know there is an app for Android called DSLR controller (or something like this) that allows you to mirror Canon EOS camera on your tablet or cell phone using a usb host cable (I´ve tested this on my cell phone and it actually works). For sure there must be a way to do something similar and use a tablet as a second monitor using a usb cable. I´m going to post this on android forum and see what comes up.
cheers
Rafa
Click to expand...
Click to collapse
I have been looking at the Habey BIS-6332B as a possible low power field computer using Android, and I am trying to find a good solution as to what to use as Monitor's (Has 2 HDMI OUT) that can be recharged easy by Solar and other means in the Boonies.
There is a Chinese outfit called Chinavasion that sells a slew of pretty cheap Android devices, and their Tablets have HDMI ports!
All the Apps I found so far are for Windows and Mac ONLY. None yet for Android-To-Android.
Curious if you found anything?
If not, any idea what area would need to be Hacked? I am not as interested in a wireless connected Monitor as I am just a better low cost TFT Screen; self powered like the Tablets. For a $65-$120 (US) Device, there has got to be a way
In my mind I picture just some Diodes that need to be reversed in the Tablet(s). Air Display in Google Play is the only one so far that looks close Win/Mac only? Any leads are welcome.
Thanks.
I'm actually searching for something like that.
I would love to output my cellphone to an old 10inch tablet.
I've been searching for tablet with video input with no luck.

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