[appium-android-driver] light up device before unlock with password on some device(xiaomi or meizu) is not working for using keyevent 4; I tried using command line, using keyevent 3 works fine on xiaomi & meizu, can we add adb.goToHome() to handle this situation?

[jiacy]

The problem

appium-android-driver has added unlocking device with password/pin/pattern etc.
adding unlockType and unlockKey in caps, on nexus and pixel it works fine, but on MeiZu & XiaoMi, it didn't light up the device at all

Environment

• Appium version: 1.7.2
• Desktop OS/version used to run Appium: Mac OS 10.12.6
• Node.js version (unless using Appium.app|exe): 8.6.0
• Mobile platform/version under test: MIUI 9 7.11.2 (Android 6.0.1) & M3S(Android 5.1)
• Real device or emulator/simulator: Real device
• Appium CLI or Appium.app|exe: Appium CLI

Details

I checkout the code in appium-android-driver/lib/unlock-helpers.js, method : helpers.passwordUnlock
while lighting up the device logic is in method: helpers.dismissKeyguard

in method: helpers.dismissKeyguard, use adb.back() to light up device(which is adb shell input keyevent 4), while it doesn't work on my Xiaomi and Meizu.

I thought we could change and use keyevent 26(26 --> "KEYCODE_POWER") to light up device, but find it not workable： if device is lighted, using 26 would dark screen

and I found using keyevent 3 would light up my xiaomi & Meizu, so I add adb.goToHome() and it works on Xiaomi & Meizu. can we do it this way? or it there a better way?
sincerely for your help, thanks so much!