相信很多开发者或者用户遇到部分手机adb链接不上。在windows下原因很多，很多时候因为adb冲突，在windows上太多的软件有adb链接，各自有各自的adb，例如腾讯的tadb等等。
下面还是说说Linux系列上的adb连接问题吧。
1.查看设备VenderID
在mac下 或者Linux打开终端（Terminal），linux下可以按快捷键（CTRL＋T，忘了具体是不是大家去试试或者查查），mac下Control＋space，输入Terminal打开。打开终端后，输入命令
mac下：
system_profiler SPUSBDataType
linux下：
lsusb
结果如下：
USB:
USB 3.0 Bus:
Host Controller Driver: AppleUSBXHCILPTH
PCI Device ID: 0x8c31
PCI Revision ID: 0x0005
PCI Vendor ID: 0x8086
Apple Internal Keyboard / Trackpad:
Product ID: 0x0262
Vendor ID: 0x05ac (Apple Inc.)
Version: 2.25
Speed: Up to 12 Mb/sec
Manufacturer: Apple Inc.
Location ID: 0x14400000 / 4
Current Available (mA): 1000
Current Required (mA): 40
Extra Operating Current (mA): 0
Built-In: Yes
BRCM20702 Hub:
Product ID: 0x4500
Vendor ID: 0x0a5c (Broadcom Corp.)
Version: 1.00
Speed: Up to 12 Mb/sec
Manufacturer: Apple Inc.
Location ID: 0x14300000 / 3
Current Available (mA): 1000
Current Required (mA): 94
Extra Operating Current (mA): 0
Built-In: Yes
Bluetooth USB Host Controller:
Product ID: 0x8289
Vendor ID: 0x05ac (Apple Inc.)
Version: 1.18
Speed: Up to 12 Mb/sec
Manufacturer: Apple Inc.
Location ID: 0x14330000 / 7
Current Available (mA): 1000
Current Required (mA): 0
Extra Operating Current (mA): 0
Built-In: Yes
USB Mouse:
Product ID: 0x00fb
Vendor ID: 0x0e8f
Version: 0.01
Speed: Up to 1.5 Mb/sec
Manufacturer: YSTEK
Location ID: 0x14200000 / 2
Current Available (mA): 1000
Current Required (mA): 100
Extra Operating Current (mA): 0
MX4 Pro:
Product ID: 0x0c02
Vendor ID: 0x2a45
Version: ff.ff
Serial Number: 0123456789ABCDEF
Speed: Up to 480 Mb/sec
Manufacturer: Meizu
Location ID: 0x14100000 / 29
Current Available (mA): 1000
Current Required (mA): 500
Extra Operating Current (mA): 0
我的是MX4 Pro，所以Vendor ID: 0x2a45
2.添加VendorID
进入/Users/user/.android，.android为隐藏文件夹，可以通过终端进入直接：
cd /Users/user/.android
ls
应该有个adb_usb.ini文件，在windows用户目录下也有该文件。添加上上面的Vendor ID
# ANDROID 3RD PARTY USB VENDOR ID LIST -- DO NOT EDIT.
# USE 'android update adb' TO GENERATE.
# 1 USB VENDOR ID PER LINE.
0x2a45
3.重启adb命令
在终端下一次输入：
adb kill-server
adb start-server
windows下部分手机也可以通过该方法解决，注意windows用户目录与linux系目录地址不一样的。