My Pixel 8 seems to be stuck thinking that an external monitor is still connected, despite having disconnected it hours ago. My friend let me connect my Pixel 8 to his portable monitor via USB-C to try it out. That worked fine and then I disconnected it. But now, hours later, I still see the external display icon in the top bar and I see "External Display" listed as "on" under "Other devices" in Settings > Connected devices. Beyond this, there are other oddities: I get no sound from my phone when I play videos (because it's trying to play sound on the phantom display?). When I take screenshots, I get two at a time (one of the phone screen, one of the phantom display?). As far as I can tell, there is no way to tell the phone that it's disconnected. Tapping on "External Display" takes me to a screen that lets me change the rotation on the external display and shows its resolution, but there's no control to disconnect. Long pressing, swiping, etc on "External Display" do nothing. I don't see any way to make the phone realize the display is not connected. I've tried a few other things to try to fix it: - Connecting my phone to my PC with a different USB-C cable - Connecting to a monitor of my own with USB-C to DisplayPort (although, the phone doesn't recognize this monitor) - Plugging a USB-C cable in to the phone with nothing on the other end - Unplugging the USB-C cable - Turning airplane mode on and off - Locking/unlocking I haven't tried restarting yet, because it seems crazy that my phone is stuck thinking it's got a display attached when there is literally nothing connected.

Samsung Galaxy S21 FE powering a portable external display over USB-C. The external display also has its own power connection to the wall via USB-C. Whenever the display isn't receiving power from the wall, it will draw power from the phone. Is there a way to prevent it from drawing power from the phone when the phone's display is off or at all?

Looks like Life360 app itself will change to landscape but it gets letterboxed on the left and right sides. I have already reached out to customer support and they have mentioned that there is no native option to change orientation. I was curious if anyone has a workaround on the Android Life360 app that can display in landscape mode to an external display?

I have an Android phone with a broken screen. When I try and unlock it, while attached to my monitor via USB-C, all I can see is a lock icon floating around. I roughly guess where the dots are for the pattern and usually I can get it unlocked. Now, there are also some apps that I use that ask me to enter a password. Again, the screen goes black and I cannot see what I am doing. I've tried entering the password with the keyboard but no luck. I imagine this is some type of security feature doing this. Is there a setting to turn that off so I can see these screens?

_To avoid this question being flagged as a duplicate, I have included a list of similar questions at the end of this post with an explanation about why my question is different. Please read these reasons before you flag this question as a duplicate!_ --- I'm trying to work out how to get my Nexus 5, in portrait mode, to display on an external monitor, in portrait mode (connected via SlimPort/HDMI). In landscape mode everything is fine: However in portrait mode, the signal is still output as if it is meant to be displayed on a landscape screen, which doesn't work at all if the screen is in portrait mode: You can see here that in both landscape and portrait mode the phone is outputting the same 1920x1080 signal, except in portrait mode the screen content is being rotated by the phone's GPU and displayed as a 607x1080 image in the middle of the 1920x1080 screen. (It is not, as some people have suggested, outputting a 1080x1920 signal that the monitor is centering. You can verify this because changing the phone between landscape and portrait shows a nice rotation animation and the monitor does not lose sync as it would if the resolution changed.) Since the phone, when in portrait mode, is rotating the picture sent to the external display, I want to disable this, so it is just output as-is with no rotation. This will of course appear wrong on a landscape monitor, but when you rotate that monitor into portrait mode it will be fine: Is there any way to disable this rotation, so that an external display in portrait mode can display the phone's content when it too is in portrait mode? --- _Similar questions have been asked before, but none are after the same solution:_ * [35402 - Show Fullscreen Portrait Layout with Miracast](https://android.stackexchange.com/questions/35402/show-fullscreen-portrait-layout-with-miracast) is very similar, except the question is about using Miracast wireless display whereas this question is about wired displays, in this case via SlimPort. * [37887 - HDMI output mirroring in Portrait mode](https://android.stackexchange.com/questions/37887/hdmi-output-mirroring-in-portrait-mode) is asking how to prevent apps from being forced into landscape mode when an external display is connected - my question is about apps that do not get forced into landscape mode * [67648 - How to change Android default-natural orientation?](https://android.stackexchange.com/questions/67648/how-to-change-android-default-natural-orientation) asks how to change the default rotation of an app, it has nothing to do with the image sent to an external monitor * [100196 - Is there are way to change Android's default screen orientation?](https://android.stackexchange.com/questions/100196/is-there-are-way-to-change-androids-default-screen-orientation) asks how to make apps default to landscape, as the external screen is landscape (in my question the external screen is in portrait) * [101305 - Force portrait mode on device](https://android.stackexchange.com/questions/101305/force-portrait-mode-on-device) is about forcing a specific app into portrait mode, and is not about adjusting the picture sent to an external display

Just want a bigger display for my phone. I need to know how I can EXTEND my phone's screen to another phone, by using Bluetooth or WiFi or RF or web? Few apps (iDisplay, AirScreen, AirDuet screen, etc) exist for only mirroring/sharing the screen - but not extending it. It's like using two monitors for your PC side-by-side & you select 'Extend display' between two monitors and hence the display bisects into two monitors. Same principle to phones.

Got my S3 Mini with CM11 stuck at boot after adding external display simulation in Developer Settings. Just after that UI froze and I had to reboot. After that it freezes on "Android is upgrading" popup and the progress circle isn't even running. I tried going to Safe Mode but the only difference is that the progress circle is running all the time but nothing happens for another hour. Logcat says something like this: I/DisplayManagerService( 2137): Display device added: DisplayDeviceInfo{"Nakładka nr 1": 720 x 480, 60.000004 fps, density 160, 160.0 x 160.0 dpi, touch NONE, rotation 0, type OVERLAY, FLAG_SECURE, FLAG_PRESENTATION} E/gralloc ( 1671): gralloc_alloc: gralloc_alloc_framebuffer (google) failed, Out of memory E/FramebufferNativeWindow( 1671): fb buffer 0 allocation failed w=480, h=800, err=Out of memory Is there any way to remove the additional display without having to do data wipe? I have full access to ADB and recovery. Just this one thing stops Android to boot further.

I want to start using my Samsung Galaxy S21 Ultra as a computer. I'm also planning to buy an ultra-wide 49-inch monitor that I want to display the Samsung screen on using DEX mode. I want to connect the phone to the monitor using a USB-C cable. I'm talking about a monitor having screen dimensions of 5120x1440 or something very similar, e.g. [Philips 499P9H](https://www.coolblue.nl/en/product/826182/philips-499p9h.html) . I haven't purchased the monitor yet because I want to know first whether the built-in video card of the Samsung Galaxy S21 is powerful enough to handle the resolution of a 49-inch ultrawide screen. Does anyone know whether this smartphone can handle such a widescreen? It needs to be able to fill the entire screen, not just part of it.

I recently bought a Waveshare display to connect my Raspberry Pi (RPI) to it for showing Home Assistant info. The display also has a second HDMI port which I would like to use to connect my Chromecast Google TV. However, the default resolution (EDID data) is 1080x1920, so by default a portrait mode display. In my RPI, I can rotate the screen to 1920x1080. But I'm still looking for a solution for rotating also the Chromecast GGTV. I already tried to install a "screenrotation" app, but nothing happened. I also tried to connect to the screen through adb and run some commands, but not the result I was hoping for (I got a message that the Chromecast did not support that resolution). Today I found on the internet an EDID emulator. Could this be a solution? These are the EDID timing parameters of the display:

Pixel Clock  H Addressable  H Blanking  V Addressable  V Blanking  H Front Porch  H Sync Width  V Front Porch  V Sync Width  H Image Size  V Image Size  H Border  V Border
141.12       1080           120         1920           40          40             20            2              5             1080          1920          0         0

Any idea how to solve my problem (if there is a solution)? Link to my display settings: https://www.waveshare.com/wiki/21.5inch_FHD_Monitor

The phone is Asus Zenfone 3 ZE553KL. The screen is black and touch is not working. The phone is locked with a pattern. Power, volume buttons and navigation bar at the bottom work. Is there any way to connect the device to a computer without replacing the screen? I've read it is possible to connect the phone to external monitor and a mouse, but is there any adapter for usb-c 2.0 otg allowing to display the screen on external monitor? Besides to use OTG it seems it has to be accepted on the touchscreen beforehand: https://www.youtube.com/watch?v=_88baLPHdxo . The phone wasn't rooted and no custom modifications were done to it.

I usually use my laptop as a CPU. I put it aside and it is connected to a screen via a VGA cable. Recently, I installed Phoenix OS in my laptop, but nothing was displayed on my secondary monitor. In windows 10, I only have to press "Windows + P" to see split screen option, but in this OS I couldn't find such settings. How to get that setting?

The Samsung 7's default is output only in horizontal format, as far as I've read. There is a way to wipe the phone, then change the code and restart it. I've tried all the orientation apps, but they only work on the phone, not the monitor. Also looking at Odroid. Can I cast an Android screen onto a TV Monitor via Windows Wireless Display Adapter, but the image is vertical regardless of the phone's orientation? Perhaps 3rd-party hardware? software? etc.?

I have an Android RCA tablet that I need to connect to a VGA Monitor. I have purchased a cable with a mini HDMI on one end and a VGA on the other end to fit both the tablet and the monitor but it doesn't work. Does anyone have any advice?

Are there any android based devices on the market with a perfectly square display? If not is there any particular reason why not and would it create any problems when switching between portrait and landscape modes?

I want to turn my phone into a Linux Desktop when I connect it to an external display but not using screen mirroring (I.e., the external screen is running while phone screen is turned off). There is something similar to my needs called "Samsung Dex" but I don't have it on my phone. I found steps to install Linux Distro & open graphical desktop using VNC but never found a way to open it on the external display. I also found Drivedroid but I don't want neither to run root (hence erase data and lose phone warranty) nor to use a computer as a device resource (CPU, Ram, GPU...). All googling lead to "turn android to second screen" no matter how I rephrase it. The only questions that is almost similar to my case are this & this . All I am asking for is keywords to search for. Keywords that I used to search for: 1. Ubuntu for Android: just gives me links to Ubuntu touch; not my question. 2. Docking android: gave me some results for devices that I can buy (like nex book that uses phone or RPI to run a semi-laptop). 3. Android as Linux Desktop: results for "use android as second monitor"

I accidentally connected my phone to my neighbor's TV. - I instantly turned off the wireless display, did my phone disconnect from his TV? - If I turned on the wireless display again, will his TV automatically reconnect to my phone? - If I disconnect my phone while it's still in a "connecting" state (not "connected" state), did I actually disconnect it from his TV? - If he turned his TV off first before I managed to disconnect it from his TV and his TV disappeared from the wireless display list, did my phone automatically disconnect from his TV? And once he's turning his TV back, does it still connect to my phone? Is my phone safe from this?

I'd like to connect a VGA monitor to an Android device. I'm thinking to connect a usb-hub to the device, then plug USB to VGA adapter into the hub. Also a mouse and a keyboard are going to be connected to that hub (i.e. to the Android device). Is it going to work or display should be the only thing to be connected to micro-usb port of the Android device? I.e. this way: Android device -> usb hub -> usb to vga adapter -> display, -> keyboard, -> mouse.

I'd like to connect a VGA monitor to an Android device. I'm thinking to connect a usb-hub to the device, then plug USB to VGA adapter into the hub. Also a mouse and a keyboard are going to be connected to that hub (i.e. to the Android device). Is it going to work or display should be the only thing to be connected to micro-usb port of the Android device? I.e. this way: Android device -> the hub -> keyboard, -> mouse, -> usb to vga adapter -> display. I were considering such https://a.co/d/hADyUFi and such https://www.amazon.com/Tripp-Lite-Serial-Adapter-U209-000-R/dp/B00005V52C/ref=mp_s_a_1_29?crid=2I0ZITLONHASM&keywords=usb+vga+adapter&qid=1655099821&sprefix=Usb+vga+adapter%2Caps%2C722&sr=8-29# types of adapters.

Is it possible to connect the Xperia X8 to external monitor? In other words, display the screen from the phone on the monitor?

I am currently working on a project which includes smartphone instrumentation via FRIDA, which requires me to attach to the device via adb. Somehow, once the adb bridge is online my 2nd display keeps losing the connection, which results in the screen to turn of for 2-3 seconds every 10-15 seconds which is quite annoying. I am working on a laptop with Ubuntu 20.04 and have two external displays attached to it. Any help is appreciated.