scrcpy hangs at "Starting demuxer thread" on android 13 Galaxy S21 5G

[jerryz12685]

• I have read the FAQ.
• I have searched in existing issues.

Environment

• OS: RedHat 7.9
• scrcpy version: 1.25
• installation method: snap
• device model: Samsung Galaxy S21 5G (SM-G991U)
• Android version: 13

Describe the bug
scrcpy hangs at "Starting demuxer thread" and the device does not open.

scrcpy 1.25 <https://github.com/Genymobile/scrcpy>
DEBUG: ADB device found:
DEBUG:           (usb)  RFCN302S5GF                     device  SM_G981U
DEBUG:           (usb)  RFCN200TYFE                     device  SM_G981U
DEBUG:           (usb)  RFCN30AE1EX                     device  SM_G981U
DEBUG:           (usb)  R52T5071FEB                     device  SM_T738U
DEBUG:           (usb)  R5CNC0Z0ZTM                     device  SM_G991U
DEBUG:           (usb)  R5CR614P2PT                     device  SM_G991U
DEBUG:           (usb)  R5CRC1KVMMM                     device  SM_G991U
DEBUG:           (usb)  RFCN8052R7A                     device  SM_G981U
DEBUG:           (usb)  RFCN20487DZ                     device  SM_G981U
DEBUG:           (usb)  RFCN20453GP                     device  SM_G981U
DEBUG:     -->   (usb)  R5CR50E5BXR                     device  SM_G991U
DEBUG:           (usb)  R5CR41DZSKB                     device  SM_G991U
DEBUG: Device serial: R5CR50E5BXR
DEBUG: Using server: /usr/local/share/scrcpy/scrcpy-server
[100%] /data/local/tmp/scrcpy-server.jar
/usr/local/share/scrcpy/scrcpy-server: 1 file pushed. 4.3 MB/s (42151 bytes in 0.009s)
[server] INFO: Device: samsung SM-G991U (Android 13)
DEBUG: Server connected
DEBUG: Starting controller thread
DEBUG: Starting receiver thread
INFO: Renderer: opengl
INFO: OpenGL version: 3.1 Mesa 20.0.8
INFO: Trilinear filtering enabled
DEBUG: Using icon: /usr/local/share/icons/hicolor/256x256/apps/scrcpy.png
INFO: Initial texture: 1080x2400
DEBUG: Starting demuxer thread

[rom1v]

Please try with another encoder.

[rom1v]

What is the result of scrcpy -v?

In particular, what is your SDL version?

If 2.24, check #3431.

installation method: snap

Also, I suggest to try a non-snap version (for example by building it: https://github.com/Genymobile/scrcpy/blob/master/BUILD.md#simple).

[jerryz12685]

scrcpy -v
scrcpy 1.25 https://github.com/Genymobile/scrcpy

Dependencies (compiled / linked):

• SDL: 2.0.8 / 2.0.8
• libavcodec: 57.107.100 / 57.107.100
• libavformat: 57.83.100 / 57.83.100
• libavutil: 55.78.100 / 55.78.100
• libavdevice: 57.10.100 / 57.10.100
• libusb: - / 1.0.21

[jerryz12685]

I tried to list encoders, but this is the result.

scrcpy --encoder=_ -s R5CR50E5BXR
scrcpy 1.25 https://github.com/Genymobile/scrcpy
[100%] /data/local/tmp/scrcpy-server.jar
/usr/local/share/scrcpy/scrcpy-server: 1 file pushed. 4.9 MB/s (42151 bytes in 0.008s)
[server] INFO: Device: samsung SM-G991U (Android 13)
INFO: Renderer: opengl
INFO: OpenGL version: 3.1 Mesa 20.0.8
INFO: Trilinear filtering enabled
INFO: Initial texture: 1080x2400
WARN: Device disconnected

[rom1v]

WARN: Device disconnected

adb has disconnected (either the USB cable, or adb server crashed on the device). Reconnect and check adb logcat.

[jerryz12685]

I get the "WARN: Device disconnected" every time i run "scrcpy --encoder=_ -s R5CR50E5BXR". I opened an adb shell while running the scrcpy command and the adb shell remained open to the device the whole time, so adb is not actually losing connection.

[rom1v]

Clean your logcat (adb logcat -c), then execute adb logcat and keep it open.

Then run scrcpy --encoder=_ -s R5CR50E5BXR. Please post any error reported in adb logcat.

[jerryz12685]

I uninstalled the snap version and installed by doing the git clone and build and still seeing the same issue.

I'm not seeing any errors related to scrcpy as far as I can tell. Logcat output is attached.

cat logcat.txt | grep -i error
01-10 10:51:46.329 1313 1313 I vendor.rmt_storage: wakelock acquired: 1, error no: 11
01-10 10:51:46.375 1313 1803 I vendor.rmt_storage: rmt_storage_client_thread: /boot/modem_fs2: About to block rmt_storage client thread (th_id: 478449274032) wakelock released: 1, error no: 0

cat logcat.txt | grep -i scrcpy
01-10 10:51:39.688 10903 10903 W ziparchive: Unable to open '/data/local/tmp/scrcpy-server.dm': No such file or directory
01-10 10:51:39.704 10903 10903 D AndroidRuntime: Calling main entry com.genymobile.scrcpy.Server
01-10 10:51:39.705 10903 10903 I scrcpy : Device: samsung SM-G991U (Android 13)
01-10 10:51:39.893 10949 10949 W ziparchive: Unable to open '/data/local/tmp/scrcpy-server.dm': No such file or directory
01-10 10:51:39.910 10949 10949 D AndroidRuntime: Calling main entry com.genymobile.scrcpy.CleanUp
01-10 10:51:45.621 10949 10949 I scrcpy : Cleaning up
01-10 10:51:45.625 10949 10949 I scrcpy : Restoring normal power mode
logcat.txt

[rom1v]

01-10 10:51:39.893 10949 10949 W ziparchive: Unable to open '/data/local/tmp/scrcpy-server.dm': No such file or directory

What? Why scrcpy-server.dm? Where this .dm come from?

[jerryz12685]

no clue, but I saw the same thing in the log for another device which is working fine, so I didn't think it was an issue.

adb -s R5CRC1KVMMM logcat | grep scrcpy
01-10 12:41:19.522 9768 9768 I scrcpy : Cleaning up
01-10 12:41:19.527 9768 9768 I scrcpy : Restoring normal power mode
01-10 12:41:42.967 15191 15191 W ziparchive: Unable to open '/data/local/tmp/scrcpy-server.dm': No such file or directory
01-10 12:41:42.984 15191 15191 D AndroidRuntime: Calling main entry com.genymobile.scrcpy.Server
01-10 12:41:42.985 15191 15191 I scrcpy : Device: samsung SM-G991U (Android 13)
01-10 12:41:43.046 1322 3338 I SurfaceFlinger: createDisplay:scrcpy
01-10 12:41:43.079 1150 1357 I libdisplayconfigqti: Register client name: scrcpy1322 device client: 0x7917286410
01-10 12:41:43.172 15208 15208 W ziparchive: Unable to open '/data/local/tmp/scrcpy-server.dm': No such file or directory
01-10 12:41:43.187 15208 15208 D AndroidRuntime: Calling main entry com.genymobile.scrcpy.CleanUp
01-10 12:49:58.372 15208 15208 I scrcpy : Cleaning up
01-10 12:49:58.378 15208 15208 I scrcpy : Restoring normal power mode
01-10 12:50:10.239 15379 15379 W ziparchive: Unable to open '/data/local/tmp/scrcpy-server.dm': No such file or directory
01-10 12:50:10.255 15379 15379 D AndroidRuntime: Calling main entry com.genymobile.scrcpy.Server
01-10 12:50:10.256 15379 15379 I scrcpy : Device: samsung SM-G991U (Android 13)
01-10 12:50:10.317 1322 3338 I SurfaceFlinger: createDisplay:scrcpy
01-10 12:50:10.332 1150 1357 I libdisplayconfigqti: Register client name: scrcpy1322 device client: 0x7917289230
01-10 12:50:10.406 15396 15396 W ziparchive: Unable to open '/data/local/tmp/scrcpy-server.dm': No such file or directory
01-10 12:50:10.420 15396 15396 D AndroidRuntime: Calling main entry com.genymobile.scrcpy.CleanUp
01-10 12:50:14.524 15396 15396 I scrcpy : Cleaning up
01-10 12:50:14.531 15396 15396 I scrcpy : Restoring normal power mode

[jerryz12685]

The issue got resolved after I did a software update on the phone. Not sure if that was the issue or it just needed a reboot, but it's working now.

[mwete1]

I got to resolve this issue this way, open a terminal (open_a_terminal_here.bat) and run (scrcpy --no-audio --record=file.mkv), this will display your phone on your computer and automatically start recording your display, so, what you need to do is play a video using your phone media player, then stop the recording after a short while, exit (open_a_terminal_here.bat) and run (scrcpy.exe) and demuxer error will be resolved. No more device has been disconnected error, problem solved.

[mwete1]

This is the easiest way, just insert your headphones or earphones into your computer and solve the screen display disconnection problem.