Black Brick

[gitlisk]

Environment

• OS: [Pop OS]
• scrcpy version: [2.1.1]
• installation method: [forgot]
• device model: Samsung S21ultra
• Android version: [latest?]

The device is stuck with a black screen.

Original command:

scrcpy  --turn-screen-off --no-audio --no-downsize-on-error --shortcut-mod=lalt --disable-screensaver  --tcpip=<device.ip>:5555

It worked fine.
CTRL+C in the terminal.

scrcpy 2.1.1 <https://github.com/Genymobile/scrcpy>
INFO: Connecting to device.ip:5555...
INFO: Connected to device.ip:5555
/usr/local/share/scrcpy/scrcpy-server: 1 file pushed. 0.5 MB/s (56995 bytes in 0.121s)
[server] INFO: Device: [samsung] samsung SM-G998B (Android 13)
INFO: Renderer: opengl
INFO: OpenGL version: 4.6.0 NVIDIA 535.104.05
INFO: Trilinear filtering enabled
INFO: Texture: 1080x2400
[server] INFO: Device screen turned off
[server] INFO: Forcing screen off
^C⏎                

Device remained black.
The device is still on. I connected it to a windows pc and it is being recognized.

How do i restore the screen functionality?
I can not connect to device via ip anymore

adb connect device.ip:5555
failed to connect to 'device.ip:5555': Connection refused

[rom1v]

Looks that a bug in the device ROM (scrcpy just requests to change the power mode to turn the screen off and on, but the device system performs the action).

I can not connect to device via ip anymore

It looks like the system crashed then.

If pressing POWER to turn it off/on does not work, you should reboot.

The device is still on. I connected it to a windows pc and it is being recognized.

If you plug it over USB, is it detected by adb devices? If so, try to run scrcpy. Or execute adb reboot.

If it does not work, turn the power on by pressing POWER for 5 seconds, if it stlil does not work, press POWER for 30 seconds.

[gitlisk]

I think the device restarts with a black screen...

adb devices
* daemon not running; starting now at tcp:5037
* daemon started successfully
List of devices attached
R5CR60XB4CV	device

mod+o
mod+shift+o
still leaves the screen black

scrcpy --shortcut-mod=lalt
scrcpy 2.1.1 <https://github.com/Genymobile/scrcpy>
INFO: ADB device found:
INFO:     -->   (usb)  R5CR60XB4CV                     device  SM_G998B
/usr/local/share/scrcpy/scrcpy-server: 1 file pushed. 5.4 MB/s (56995 bytes in 0.010s)
[server] INFO: Device: [samsung] samsung SM-G998B (Android 13)
INFO: Renderer: opengl
INFO: OpenGL version: 4.6.0 NVIDIA 535.104.05
INFO: Trilinear filtering enabled
INFO: Texture: 1080x2400
[server] INFO: Device screen turned off
[server] INFO: Device screen turned on
INFO: 0 fps

A window opens but it is also black.

pressing mod+p multiple times calls 112 and that is being displayed somehow, canceling it makes it go back to black

Maybe it is a hardware issue?

Is it possible to boot up a phone without a functional screen and use it on the pc?

[rom1v]

Is it possible to boot up a phone without a functional screen and use it on the pc?

Oh, the screen is broken? So when you say "black screen", it's just in the mirroring window? (the physical device screen is black anyway, right?)

[gitlisk]

I have no idea if the screen is broken or not. It was working but when it stopped working on the pc, I went to check it out and dropped the phone.

The physical device is black.
I managed to open the emergency menu while streaming to the pc but I can't enter pin or open stuff since it goes black

[rom1v]

OK, so if the mirroring is black, it's due to views with "secure flag" that cannot be mirrored since Android 12 (#36 #2129).

I guess your lock screen has this "secure flag" enabled.

[gitlisk]

Ok. Thanks for the support.
I assume there is no way the app can hold my screen hostage even after a reboot right?
Triggering mod+o should turn the screen on if it would work right?
You think I can conclude that the fall damaged the screen somehow,
its just weird that it went black and nothing is happening,
have not seen a screen behave like this,
usually it takes a lot more to completely break them.

[gitlisk]

It was the screen that broke.
I am sorry for the trouble.
Thanks for the software.
Hit me up if ya ever find yourself in Berlin.