我想安装 MyPaint，然后按照此操作回答。
sudo add-apt-repository ppa:achadwick/mypaint-testing
sudo apt-get update
sudo apt-get install mypaint mypaint-data-hires
但它给出了这个错误
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package mypaint-data-hires is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
mypaint-data-extras
E: Package 'mypaint-data-hires' has no installation candidate
ubuntu software centre我也尝试从出现错误的地方安装它unauthenticated。即使接受这个错误，也没有安装任何东西。
终端安装
sudo apt-get install mypaint mypaint-data-extras
给出了这个错误
The following NEW packages will be installed:
mypaint mypaint-data mypaint-data-extras
0 upgraded, 3 newly installed, 0 to remove and 2 not upgraded.
Need to get 27.9 MB of archives.
After this operation, 38.4 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
WARNING: The following packages cannot be authenticated!
mypaint-data mypaint mypaint-data-extras
Install these packages without verification? [y/N] n
由于未经验证，我拒绝安装。我应该安装它吗？
如果无法安装此应用程序，您可以建议一些轻的绘画应用程序？
编辑
结果sudo apt-key update
gpg: keyblock resource `/etc/apt/trusted.gpg.d/webupd8team-y-ppa-manager.gpg': resource limit
gpg: keyblock resource `/etc/apt/trusted.gpg.d/yannubuntu-boot-repair.gpg': resource limit
gpg: key 437D05B5: "Ubuntu Archive Automatic Signing Key <[email protected]>" not changed
gpg: key FBB75451: "Ubuntu CD Image Automatic Signing Key <[email protected]>" not changed
gpg: key C0B21F32: "Ubuntu Archive Automatic Signing Key (2012) <[email protected]>" not changed
gpg: key EFE21092: "Ubuntu CD Image Automatic Signing Key (2012) <[email protected]>" not changed
gpg: Total number processed: 4
gpg: unchanged: 4
答案1
我已经解决了这个问题。这不是 MyPaint 的问题，而是与 GPG 和 PPA 有关。我已按照此回答。
我第一次这样做sudo apt-get update并收到类似这样的错误
然后去software and updates > Other softwares取消选中所有导致错误的 PPA
然后当我更新sudo apt-get update它时显示了额外的错误GPG error...NO_PUBKEY这是通过
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys <PUBKEY>