我试图启动虚拟Android设备，我使用 Android Studio 2.3 （通过命令行）的avdmanager创建
所有命令均以 root用户
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，它会给我：
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
/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
执行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是没有找到我系统的这个问题的复制品，其他系统上同样问题的解决办法并没有。为我工作，已经尝试完全清除并重新安装所有qemu，libvirt，libvirtd和kvm包没有成功。
任何帮助表示赞赏!!
修改
~/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)
答案 0 :(得分：9)
尝试以下步骤：
按如下所示安装qemu-kvm
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，请尝试执行以下命令
sudo chown <username> /dev/kvm
它在 Ubuntu 18.04
中对我有用答案 1 :(得分：1)
我解决了运行问题
sudo apt install qemu-kvm
sudo chown username -R /dev/kvm
答案 2 :(得分：0)
假设您要使用当前OS用户应用此所有权更改，请使用以下命令：
sudo chown $(whoami) -R /dev/kvm
答案 3 :(得分：0)
检查nano /etc/group包含以kvm开头并以您的用户名结尾的行。如果没有，请运行：
sudo gpasswd -a $USER kvm