Android Studio 2.3使用来自控制台的模拟器，对于root用户，“/ dev / kvm device：permission denied”

Question

我正在尝试使用Android Studio 2.3的avdmanager（通过命令行）创建一个虚拟的android设备

所有命令都以root用户身份执行

当我尝试通过$ ~/Android/Sdk/tools/./emulator @Nexus_5X_Api_23_x86启动模拟器时输出为：

emulator: ERROR: x86_64 emulation currently requires hardware acceleration!
Please ensure KVM is properly installed and usable.
CPU acceleration status: This user doesn't have permissions to use KVM (/dev/kvm)

我正在使用64位的Ubuntu 16.04服务器，Android Studio通过x11转发启动，因此我的桌面环境被使用（这也是ubuntu 16.04,64位！）

当我输入$ kvm-ok时，它给了我：

INFO: /dev/kvm exists
KVM acceleration can be used

要证明我尝试访问的.avd存在：

$ ~/Android/Sdk/tools/bin/./avdmanager list avd

给出输出：

März 15, 2017 4:30:53 NACHM. sun.util.PropertyResourceBundleCharset$PropertiesFileDecoder decodeLoop
INFO: Invalid or unmappable UTF-8 sequence detected. Switching encoding from UTF-8 to ISO-8859-1
Available Android Virtual Devices:
    Name: Nexus_5X_Api_23_x86
  Device: Nexus 5X (Google)
    Path: /root/.android/avd/Nexus_5X_Api_23_x86.avd
  Target: Google APIs (Google Inc.)
          Based on: Android 6.0 (Marshmallow) Tag/ABI: google_apis/x86_64
  Sdcard: 800M

进一步/dev/kvm的权限是：

root@h2627852:~# ls -l /dev/kvm
crwxrwxrwx 1 root kvm 10, 232 Mär 15 10:48 /dev/kvm
root@h2627852:~# groups root
root : root kvm libvirtd libvirt

表演emulator-check给了我：

root@h2627852:~# ~/Android/Sdk/tools/./emulator-check accel hyper-v cpu-info window-mgr desktop-env
accel:
11
This user doesn't have permissions to use KVM (/dev/kvm)
accel
hyper-v:
0
Hyper-V runs only on Windows
hyper-v
cpu-info:
146
Intel CPU|Virtualization is supported|64-bit CPU|
cpu-info
debug1: client_input_channel_open: ctype x11 rchan 3 win 65536 max 16384
debug1: client_request_x11: request from ::1 36346
debug1: channel 1: new [x11]
debug1: confirm x11
debug1: channel 1: FORCE input drain
window-mgr:
0
GNOME Shell
window-mgr
desktop-env:
0
mate
desktop-env

我真的不知道该怎么做，在整个论坛上搜索但没有找到我的系统的这个问题的复制品，其他系统上同样问题的修复对我来说不起作用，已经尝试完全清除并重新安装所有qemu，libvirt，libvirtd和kvm软件包，但没有成功。

任何帮助表示赞赏!!

编辑： ~/Android/Sdk/tools/./emulator @Nexus_5X_Api_23_x86 -verbose给我，

以下输出：

emulator:Android emulator version 25.3.0.0 (build_id 3394391)
emulator:Found AVD name 'Nexus_5X_Api_23_x86'
emulator:Found AVD target architecture: x86_64
emulator:argv[0]: '/root/Android/Sdk/tools/./emulator'; program directory: '/root/Android/Sdk/tools'
emulator:  Found directory: /root/Android/Sdk/system-images/android-23/google_apis/x86_64/

emulator:Probing for /root/Android/Sdk/system-images/android-23/google_apis/x86_64//kernel-ranchu: file exists
emulator:Auto-config: -engine qemu2 (based on configuration)
emulator:  Found directory: /root/Android/Sdk/system-images/android-23/google_apis/x86_64/

emulator:try dir /root/Android/Sdk/tools
emulator:try dir /root/Android/Sdk/tools/./
emulator:try dir /root/Android/Sdk/emulator
emulator:Found target-specific 64-bit emulator binary: /root/Android/Sdk/emulator/qemu/linux-x86_64/qemu-system-x86_64
emulator:Adding library search path: '/root/Android/Sdk/emulator/lib64'
emulator:Adding library search path: '/root/Android/Sdk/emulator/lib64/libstdc++'
emulator:  Found directory: /root/Android/Sdk/system-images/android-23/google_apis/x86_64/

emulator:  Found directory: /root/Android/Sdk/system-images/android-23/google_apis/x86_64/

emulator:GPU emulation is disabled
emulator: Adding library search path for Qt: '/root/Android/Sdk/emulator/lib64/qt/lib'
emulator: Setting Qt plugin search path: QT_QPA_PLATFORM_PLUGIN_PATH=/root/Android/Sdk/emulator/lib64/qt/plugins
emulator: Running :/root/Android/Sdk/emulator/qemu/linux-x86_64/qemu-system-x86_64
emulator: qemu backend: argv[00] = "/root/Android/Sdk/emulator/qemu/linux-x86_64/qemu-system-x86_64"
emulator: qemu backend: argv[01] = "@Nexus_5X_Api_23_x86"
emulator: qemu backend: argv[02] = "-verbose"
emulator: Concatenated backend parameters:
 /root/Android/Sdk/emulator/qemu/linux-x86_64/qemu-system-x86_64 @Nexus_5X_Api_23_x86 -verbose
emulator: Android virtual device file at: /root/.android/avd/Nexus_5X_Api_23_x86.ini
emulator: virtual device content at /root/.android/avd/Nexus_5X_Api_23_x86.avd
emulator: virtual device config file: /root/.android/avd/Nexus_5X_Api_23_x86.avd/config.ini
emulator: using core hw config path: /root/.android/avd/Nexus_5X_Api_23_x86.avd/hardware-qemu.ini
emulator: Found AVD target API level: 23
emulator: Read property file at /root/Android/Sdk/system-images/android-23/google_apis/x86_64//build.prop
emulator: No boot.prop property file found.
emulator: Warning: config.ini contains invalid skin.path entry: (null)
emulator: autoconfig: -skin HVGA
emulator: autoconfig: -skindir (null)
emulator: autoconfig: -kernel /root/Android/Sdk/system-images/android-23/google_apis/x86_64//kernel-ranchu
emulator: Target arch = 'x86_64'
emulator: Auto-detect: Kernel image requires new device naming scheme.
emulator: Auto-detect: Kernel does not support YAFFS2 partitions.
emulator: autoconfig: -ramdisk /root/Android/Sdk/system-images/android-23/google_apis/x86_64//ramdisk.img
emulator: Using initial system image: /root/Android/Sdk/system-images/android-23/google_apis/x86_64//system.img
emulator: autoconfig: -data /root/.android/avd/Nexus_5X_Api_23_x86.avd/userdata-qemu.img
emulator: autoconfig: -initdata /root/.android/avd/Nexus_5X_Api_23_x86.avd/userdata.img
emulator: autoconfig: -cache /root/.android/avd/Nexus_5X_Api_23_x86.avd/cache.img
emulator: autoconfig: -sdcard /root/.android/avd/Nexus_5X_Api_23_x86.avd/sdcard.img
emulator: Increasing RAM size to 1024MB
emulator: VM heap size 0MB is below hardware specified minimum of 256MB,setting it to that value
emulator: System image is read only
emulator: GPU emulation is disabled
emulator: Found 2 DNS servers: 85.214.7.22 81.169.163.106
emulator: skin name 'HVGA' aliased to '320x480'
emulator: found magic skin width=320 height=480 bpp=16

emulator: CPU Acceleration: DISABLED
emulator: CPU Acceleration status: This user doesn't have permissions to use KVM (/dev/kvm)
emulator: ERROR: x86_64 emulation currently requires hardware acceleration!
Please ensure KVM is properly installed and usable.
CPU acceleration status: This user doesn't have permissions to use KVM (/dev/kvm)

Answer 1

试试吧。这对我有用

$ sudo chown username -R /dev/kvm

有时您还需要运行此代码

$ cd Android/Sdk/emulator/lib64/libstdc++
$ mv libstdc++.so.6 libstdc++.so.6.bak
$ ln -s /usr/lib64/libstdc++.so.6

Answer 2

请尝试以下步骤：

安装qemu-kvm如下

sudo apt install qemu-kvm

使用以下命令将用户添加到kvm组：

sudo adduser <username> kvm

如果您获得权限被拒绝，请尝试以下命令

sudo chown <username> /dev/kvm

它在Ubuntu 18.04中适用于我

Answer 3

我解决了运行中的问题

sudo apt install qemu-kvm
sudo chown username -R /dev/kvm