Anything in Android that can change the active area mapping of my OTG tablet? - OnePlus 6 Questions & Answers

I have a OP6 and I found an XP-Pen drawing tablet that I can use with Android via an OTG adapter.
It works, but the problem is, the active area is a 16:9 ratio, while the OP6 is 19:9. So anything I draw on the tablet ends up a little squished or stretched.
I was wondering if there's an Android utility that can alter how much of the tablet can be used at one time, and fit it into a 19:9 ratio probably, with a margin of the active area disabled.

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[Q] external display resoluton

Is there any way (via app/driver) to increase the display resolution for a docked g-tablet?
It looks like the hardware can drive much higher resolutons: tegradeveloper.nvidia.com/tegra/forum/does-tegra-250-support-2-deferent-video-output-hdmi-and-vga-same-time
I see the Motorola Atrix has an app that does this trick when docked in their "laptop" dock. It would be real slick to do this with my docking unit - I would probably never go back to a laptop or desktop again, except for remote control from my tablet.
TIA
It wouldn't make sense for a device to push more pixels than the actual LCD is capable of.
I don't care about the display on the tablet when it is docked and hooked to an external monitor - that could be turned off. What matters is the external display and how crappy 1024x600 looks on a 19" 16:9 monitor made to display 1440x900.
Our HDMI out is 1080p. 1080x1920
What are you hooked up to when getting higher resolution? Does the tablet display just turn off and external takes over?
Everything I have hooked my dock up to (4:3 and 16:9 19" monitors and 720p TV) gets the same resolution as my tablet display. So the bigger the display the more jagged the experience.
Thanks
i havent tested my hdmi output (waiting for straight cable) but the specs are there.
since max resolution on the gtab is 1024x600, thats what youl see, but through the cord the (720p, 1080p) resolution should show on the HD TV.
Hi Resolution when you use the YouTube.apk
stumppc said:
Is there any way (via app/driver) to increase the display resolution for a docked g-tablet?
It looks like the hardware can drive much higher resolutons: tegradeveloper.nvidia.com/tegra/forum/does-tegra-250-support-2-deferent-video-output-hdmi-and-vga-same-time
I see the Motorola Atrix has an app that does this trick when docked in their "laptop" dock. It would be real slick to do this with my docking unit - I would probably never go back to a laptop or desktop again, except for remote control from my tablet.
TIA
Click to expand...
Click to collapse
I was able to get HD (1080p) using the YouTube.APK by selecting HD mode in the application setting. Both the Tablet and the external screen played 1080p videos quite nicely. If you turned off the Tablet display, the external screen also went blank. When I quit out of the APK and set the Tablet to sleep, the HDMI setting appeared to stick in the main Tablet settings. There is no easy way to set the Gtablet resolution using the standard stock settings.
After a few days and trying different TV streaming APKs from the Market. The HDMI Out stopped working altogether. I did a reboot as well as Flash the ROM but the HDMI OUT still does not display. It does recognize the HDMI signal (the LCD shows 1080P) from the dock HDMI port. I am not sure what happened but some how one or more default settings are stuck in the user data configuration file. One of those settings makes my SHARP external display go blank (can't display the set mode). The GTablet continues to display in both 420P and HD (probably 720P) modes.
I will try a data wipe and Flash again to see if it clears the HDMI setting back to the default mode (I believe that is 420p).
If this is the case, then we need some type of HDMI.apk that allows one to set the screen mode to Tablet only, Tablet & External or External only AND set the resolution mode for each. When watching using the dock and an external LCD, I want the default to be 1080p.
So, far when tricking the Gtablet to display 1080p I have some how broken the dock and have not been able to reset back to factory settings.
Any suggestions and/or configuration apk's to resolve this problem?
EKS
Hi Resolution when you use the YouTube.apk
stumppc said:
Is there any way (via app/driver) to increase the display resolution for a docked g-tablet?
It looks like the hardware can drive much higher resolutons: tegradeveloper.nvidia.com/tegra/forum/does-tegra-250-support-2-deferent-video-output-hdmi-and-vga-same-time
I see the Motorola Atrix has an app that does this trick when docked in their "laptop" dock. It would be real slick to do this with my docking unit - I would probably never go back to a laptop or desktop again, except for remote control from my tablet.
TIA
Click to expand...
Click to collapse
I was able to get HD (1080p) using the YouTube.APK by selecting HD mode in the application setting. Both the Tablet and the external screen played 1080p videos quite nicely. If you turned off the Tablet display, the external screen also went blank. When I quit out of the APK and set the Tablet to sleep, the HDMI setting appeared to stick in the main Tablet settings. There is no easy way to tell in the standard GTablet setting function.
After a few days and trying different TV streaming APKs from the Market. The HDMI Out stopped working. I did a reboot as well as Flash the ROM but the HDMI OUT still does not display. It does recognize the HDMI signal (the LCD shows 1080P) from the dock HDMI port. I am not sure what happened but some how one or more default settings are stick in the configuration file. I will try a data wipe and Flash again to see if it clears the HDMI setting back to the default mode (I believe that is 420p).
If this is the case, then we need some type of HDMI.apk that allows one to set the screen mode to Tablet only, Tablet & External or External only AND set the resolution mode for each. When watching using the dock and an external LCD, I want the default to be 1080p.
So, far when tricking the Gtablet to display 1080p I have some how broken the dock and have not been able to reset back to factory settings.
Any suggestions and/or configuration apk's to resolve this problem?
EDIT: Fixed the HDMI Display by using new cable. I get really nice HD output using the YouTube.APK with the settings set to HD.
EKS

[Q] hdmi problem

Hi,
When connecting the asus tranformer, or any other tegra 2 tablet, to the tv I get a wrong resolution.
What happens is that for the 16:9 ratio it cuts about 5% of all the borders of the image. If then I switch on the tv setting from 16:9 to fit screen it works well and I can see the whole tablet screen.
But some tvs don't have that option, and thus the image shows incorrectly cutting a part of the border of the image.
Do you have the same problem? Is there a fix?

[Q] Android TV Box CS918, T-R42 display is way too dark

Running on official 4.4.2 firmware.
I found that the screen display is way too dark, very unacceptable. This is very obvious for video playback from every software, e.g. youtube, mxplayer, xbmc, etc.
As I share same hdmi port on my tv with other 5 devices, it is not convenient to adjust tv display back and forth between other 5 devices and this dark-display tv box.
My box is rooted. Is there any way to adjust its gamma, black level, etc. Tried several brightness adjustment apps from store and did not help.
MiniX Forums had a thread covering this, without much of a complete solution. Since they changed their domain to minixforum, the thread either has a different URL or is lost, but google cache exists of the original - http://webcache.googleusercontent.c...reen-too-dark.3631/+&cd=2&hl=en&ct=clnk&gl=uk
Short version is try changing HDMI range on your TV from limited to full. It may help other people to reply if you mention which Android apps you've tried to use (which presumably were adjusting backlight levels on a phone/tablet, rather than the video signal data being sent by your box. As an example, although advertised as only compatible for a couple of Nexus devices, have you tried https://play.google.com/store/apps/details?id=com.teamkang.fauxdisplay&hl=en ? How about https://play.google.com/store/apps/details?id=com.netmanslab.sa&hl=en ?
Thanks a lot for your comprehensive reply.
My LG TV don't have an option for Full-range RGB; however, it has several Picture modes for me to choose. I usually use one of the Picture mode (say, Standard Picture mode) which I already tweaked/calibrated for best display quality.
Some other picture mode on my TV allows me to choose Gamma (high, medium, low), brightness adjustment, and Dark Level (high, low). I tried adjusting those options in combination under another Picture mode and, though not perfect, it gave me a better result.
So when I view other sources (Dune, Appletv, digital tv, satellite tv), I choose the Standard Picture mode; when switching my hdmi selector to this Android box, I have to choose the other Picture mode on my TV. This is good enough for now.
The Screen Adjuster app won't help. I've not tried The Advanced Color&Gamma Control paid app.
Anyway, Android tV box should have gamma/brightness/contrast/sharpness control under its Setting.
Update: tried Advanced Color&Gamma Control app, it allows me to adjust rgb only, no gamma adjustment.

Connect to a 1680x1050 monitor/change HDMI output resolution

I would like to attach a Samsung Galaxy Tab S4 to an old Aluminum 20" Apple Cinema Display, but I reckon this question would be applicable to all sorts of devices and monitors. When I connect my Tab S4 with a USB-C to DVI adapter the Display LED blinks 3 quick times, indicating that it does not like the input format/resolution. The monitor's optimal resolution is 1680x1050. Can I get my Tab S4 to output that resolution? I can hook the tablet to an old Samsung monitor with the same adapter and it is clearly not the correct resolution, but at least something comes up on screen.
Can this be done, and if so how?
I have tried SecondScreen and it successfully changes sizing of stuff on screen, but does not seem to affect the actual resolution send out to DVI/HDMI.
Thread closed as duplicated with https://forum.xda-developers.com/ge...o-monitor-changing-hdmi-t3908309/post79056110

Question Screen casting a specific resolution/aspect ratio

I want to screen cast my phone to my tv because my tv doesn't have the discovery plus app.
I can cast my phone no problem but there are black bars on both sides of the picture on the tv. I'm assuming this may be because of a resolution or aspect ratio mismatch between my phone and my tv.
It's there a way to cast to my tv where the image fills the entire screen?
My device is a OnePlus 7 pro
Disable Overscan on your TV box.
change your tv aspect ratio to wide mode or zoom mode whatever you call that thing
The oneplus 7 pro is 19.5 x 9 I'm "casting" using the "Screen Cast" icon in the notification tray. miracast or bubbleunp (not sure which tbh, its an LG tv).
Changing the aspect ratio on the tv doesnt work. I need a phone based solution. I need to be able to just send a 16x9 signal.
When I watch 16x9 content on my phone, there are black bars on the left and right because my phone resolution is 19.5x9 and so im projecting that to a 16x9 screen, its literally casting my whole screen.
@jwoegerbauer I have no such option when casting video from my phone. It's stuck at 16x9

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