问题描述
当我尝试在模拟器上运行我的 Android 应用程序时，我收到此错误:
When I try to run my Android app on an emulator I get this error:
/dev/kvm 权限被拒绝.
我检查了权限并将我当前登录的用户添加到 kvm 组.怎么了?
I checked the permissions and added the user I am currently logged in with to the kvm group. What is wrong?
推荐答案
如评论中所述，从 Ubuntu 18.04 和 Linux Mint Tara 开始，您需要首先 sudo apt install qemu-kvm.
As mentioned in the comments, starting with Ubuntu 18.04 and Linux Mint Tara you need to first sudo apt install qemu-kvm.
检查/dev/kvm的所有权使用
ls -al /dev/kvm
用户是root，组kvm.要检查哪些用户在 kvm 组中，请使用
The user was root, the group kvm. To check which users are in the kvm group, use
grep kvm /etc/group
这个回来了
kvm:x:some_number:
在我的系统上:由于最后的 : 右侧没有任何内容，kvm 组中没有用户.
on my system: as there is nothing rightwards of the final :, there are no users in the kvm group.
要将您的用户添加到 kvm 组，您可以使用
sudo adduser $USER kvm
将用户添加到组中，然后使用 grep kvm/etc/group 再次检查.
which adds the user to the group, and check once again with grep kvm /etc/group.
正如@marcolz 提到的，命令 newgrp kvm 应该为您更改群组成员资格.如果这不起作用，@Knossos 提到您可能想要注销并重新登录(或重新启动)，以使权限生效.或者按照提到的@nmirceac并通过 su - $USER 重新登录同一个 shell.
As mentioned by @marcolz, the command newgrp kvm should change the group membership live for you. If that did not work, @Knossos mentioned that you might want to log out and back in (or restart), for the permissions to take effect. Or do as @nmirceac mentioned and re-login in the same shell via su - $USER.
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