Gentoo 官方的 portage 沒有 scrcpy 這軟體，必須找 overlay 的 ebuild。
安裝好後，第一次執行
ajax@aj-i7 ~ $ scrcpy
INFO: scrcpy 1.17 <https://github.com/Genymobile/scrcpy>
exec: No such file or directory
ERROR: Command not found: [adb], [push], [/usr/share/scrcpy/scrcpy-server], [/data/local/tmp/scrcpy-server.jar]
ERROR: (make 'adb' accessible from your PATH or define its fullpath in the ADB environment variable)
INFO: You may install 'adb' by "apt install adb"
ERROR: Could not execute "adb push"找不到 adb 指令，關於 Gentoo 的 adb 說明: Android/adb
安裝 dev-util/android-tools package 之後再執行
ajax@aj-i7 ~ $ scrcpy
INFO: scrcpy 1.17 <https://github.com/Genymobile/scrcpy>
* daemon not running; starting now at tcp:5037
* daemon started successfully
adb: error: failed to get feature set: no devices/emulators found
ERROR: "adb push" returned with value 1需要在手機開啟 USB debug，這個無需 root，一般是在 [系統資訊] 的某個項目上點 7下，就會出現開發者選項。
再次執行
ajax@aj-i7 ~ $ scrcpy
INFO: scrcpy 1.17 <https://github.com/Genymobile/scrcpy>
/usr/share/scrcpy/scrcpy-server: 1 fil...shed. 1.3 MB/s (34930 bytes in 0.025s)
[server] INFO: Device: samsung SM-A315G (Android 10)
[server] ERROR: Exception on thread Thread[main,5,main]
java.lang.IllegalStateException
at android.media.MediaCodec.native_dequeueOutputBuffer(Native Method)
at android.media.MediaCodec.dequeueOutputBuffer(MediaCodec.java:2789)
at com.genymobile.scrcpy.ScreenEncoder.encode(ScreenEncoder.java:113)
at com.genymobile.scrcpy.ScreenEncoder.internalStreamScreen(ScreenEncoder.java:94)
at com.genymobile.scrcpy.ScreenEncoder.streamScreen(ScreenEncoder.java:60)
at com.genymobile.scrcpy.Server.scrcpy(Server.java:80)
at com.genymobile.scrcpy.Server.main(Server.java:252)
at com.android.internal.os.RuntimeInit.nativeFinishInit(Native Method)
at com.android.internal.os.RuntimeInit.main(RuntimeInit.java:342)
INFO: Renderer: opengl
INFO: OpenGL version: 4.6.0 NVIDIA 460.56
INFO: Trilinear filtering enabled
INFO: Initial texture: 1080x2400
WARN: Device disconnected還是不行，但只差一步了，指令要加解析度
ajax@aj-i7 ~ $ scrcpy -m 1080
INFO: scrcpy 1.17 <https://github.com/Genymobile/scrcpy>
/usr/share/scrcpy/scrcpy-server: 1 fil...shed. 5.6 MB/s (34930 bytes in 0.006s)
[server] INFO: Device: samsung SM-A315G (Android 10)
INFO: Renderer: opengl
INFO: OpenGL version: 4.6.0 NVIDIA 460.56
INFO: Trilinear filtering enabled
INFO: Initial texture: 488x1080
==> 連上手機，開啟手機螢幕視窗
....
==> 關閉手機螢幕視窗
WARN: Killing the server...旋轉90度的指令 "scrcpy -m 1080 --lock-video-orientation 1"
使用 appimage
media-sound/jack2
