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我尝试过

tag-icon • tag-icon nvidia dependencies partial-upgrade
我尝试过

如何在 Ubuntu 中升级（恢复）手动降级的降级包？

我尝试在 Jetson TX2（操作系统为 Ubuntu 18.04.4 LTS）上安装 open-cv，但发现一些依赖项的版本问题。因此，我手动将几个依赖项从 x:xxx-0ubuntu0.18.04.1 降级为 x:xxx

这些是我降级的所有软件包：

sudo apt-get install -y libavcodec-dev=7:3.4.2-2
sudo apt install libavutil55=7:3.4.2-2
sudo apt install gir1.2-pango-1.0=1.40.14-1
sudo apt install libcairo2-dev=1.12.10
sudo apt install libcairo2=1.15.10-2
sudo apt install gir1.2-pango-1.0=1.40.14-1
sudo apt install libcairo2-dev=1.12.10
sudo apt install libcairo2=1.15.10-2
sudo apt install libcairo-gobject2=1.15.10-2
sudo apt install libxcb-shm0=1.13-1
sudo apt install libpango1.0.0=1.40.14-1
sudo apt install libpango-1.0.0=1.40.14-1
sudo apt install libpangocairo-1.0-0=1.40.14-1
sudo apt install libpangoft2-1.0-0=1.40.14-1
sudo apt install libpangoxft1.0-0=1.40.14-1
sudo apt install libpangoxft-1.0-0=1.40.14-1
sudo apt install libswscale4=7:3.4.2-2

目前，我想将 jetpack 包从 4.3 升级到 4.4( sudo apt-get install nvidia-jetpack)，但是由于我手动降级了包，它给出了依赖性错误：

The following packages have unmet dependencies:


nvidia-jetpack : Depends: libopencv-python (= 4.1.1-2-gd5a58aa75) but it is not going to be installed
                  Depends: libvisionworks-sfm-dev (= 0.90.4) but it is not going to be installed
                  Depends: libvisionworks-samples (= 1.6.0.500n) but it is not going to be installed
                  Depends: libvisionworks-tracking-dev (= 0.88.2) but it is not going to be installed
                  Depends: vpi-samples (= 0.1.0) but it is not going to be installed
                  Depends: libopencv (= 4.1.1-2-gd5a58aa75) but it is not going to be installed
                  Depends: libopencv-samples (= 4.1.1-2-gd5a58aa75) but it is not going to be installed
                  Depends: libopencv-dev (= 4.1.1-2-gd5a58aa75) but it is not going to be installed
                  Depends: opencv-licenses (= 4.1.1-2-gd5a58aa75) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

我尝试过

一次性升级所有套餐

我正在尝试升级到原始版本。

apt-get update
apt-get upgrade

给了我一些错误：

E: The repository 'http://archive.canonical.com/ubuntu precise Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

因此，我遵循了E: 存储库“http//archive.canonical.com 精确发布”未签名它没有修复它。

为特定包安装

由于我知道降级的几个软件包的名称，因此我尝试使用 --only-upgrade 选项进行升级。例如，要升级降级的软件包，我使用了

sudo apt-get install --only-upgrade libavcodec-dev

然而，它给了我

Reading package lists... Done
Building dependency tree     
Reading state information... Done
libavcodec-dev is already the newest version (7:3.4.2-2).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. again.

我知道 libavcodec-dev(7:3.4.2-2) 不是最新版本，因为我降级了它。但是，apt-get 认为我降级的是最新版本。

我该如何修复它？

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