Ubuntu 15.10全新安装错误
刚刚安装了ubuntu 15.10，但是当我尝试执行sudo apt-get update ，会发生以下错误：
W: GPG error: http://download.opensuse.org Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 977C43A8BA684223 W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/wily-updates/main/source/Sources Hash Sum mismatch W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/wily-updates/main/binary-amd64/Packages Hash Sum mismatch W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/wily-updates/main/binary-i386/Packages Hash Sum mismatch E: Some index files failed to download. They have been ignored, or old ones used instead.
这是/etc/apt/sources.list
#deb cdrom:[Ubuntu 15.10 _Wily Werewolf_ - Release amd64 (20151021)]/ wily main restricted # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://archive.ubuntu.com/ubuntu/ wily main restricted deb-src http://archive.ubuntu.com/ubuntu/ wily main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://archive.ubuntu.com/ubuntu/ wily-updates main restricted deb-src http://archive.ubuntu.com/ubuntu/ wily-updates main restricted ## NB software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://archive.ubuntu.com/ubuntu/ wily universe deb-src http://archive.ubuntu.com/ubuntu/ wily universe deb http://archive.ubuntu.com/ubuntu/ wily-updates universe deb-src http://archive.ubuntu.com/ubuntu/ wily-updates universe ## NB software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://archive.ubuntu.com/ubuntu/ wily multiverse deb-src http://archive.ubuntu.com/ubuntu/ wily multiverse deb http://archive.ubuntu.com/ubuntu/ wily-updates multiverse deb-src http://archive.ubuntu.com/ubuntu/ wily-updates multiverse ## NB software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. deb http://archive.ubuntu.com/ubuntu/ wily-backports main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ wily-backports main restricted universe multiverse deb http://security.ubuntu.com/ubuntu wily-security main restricted deb-src http://security.ubuntu.com/ubuntu wily-security main restricted deb http://security.ubuntu.com/ubuntu wily-security universe deb-src http://security.ubuntu.com/ubuntu wily-security universe deb http://security.ubuntu.com/ubuntu wily-security multiverse deb-src http://security.ubuntu.com/ubuntu wily-security multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. ## This software is not part of Ubuntu, but is offered by Canonical and the ## respective vendors as a service to Ubuntu users. # deb http://archive.canonical.com/ubuntu wily partner # deb-src http://archive.canonical.com/ubuntu wily partner
有帮助吗？
您收到的错误消息：
W：GPG错误： http ： //download.opensuse.org发布：无法validation以下签名，因为公钥不可用：NO_PUBKEY 977C43A8BA684223
意味着您必须977C43A8BA684223通过重新加载键来添加缺少的键977C43A8BA684223 ：
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys
然后输入：
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 977C43A8BA684223 sudo apt-get update
我相信你丢失了Ubuntu密钥服务器的密钥。 试试这个：
# sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 977C43A8BA684223