各位好，我在Orange PI 5 Plus单板计算机上运行的是Ubuntu 22.04系统，最近想安装Steam，试了命令行安装和网页安装两种方式，但每次启动Steam都会碰到相同的依赖缺失错误，实在没辙了来求助大家。

具体情况是这样的：运行Steam后，它会提示需要安装这些额外的包：

libc6:arm64 libc6:i386 libegl1:arm64 libgbm1:arm64 libgl1-mesa-dri:arm64 libgl1-mesa-dri:i386 libgl1:arm64 libgl1:i386 steam-libs-amd64:amd64 steam-libs-i386:i386

我按回车继续安装后，就出现了一堆404错误和包找不到的提示，完整的错误日志如下：

.................................................................................................E: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/jammy/main/binary-i386/Packages  404  Not Found [IP: 185.125.190.36 80]

E: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/jammy-updates/main/binary-i386/Packages  404  Not Found [IP: 185.125.190.36 80]

E: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/jammy-backports/main/binary-i386/Packages  404  Not Found [IP: 185.125.190.36 80]

E: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/jammy-security/main/binary-i386/Packages  404  Not Found [IP: 185.125.190.36 80]

E: Some index files failed to download. They have been ignored, or old ones used instead.

Reading package lists... Done

Building dependency tree... Done

Reading state information... Done

Package libc6:i386 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:

libdb1-compat libnss-nis libnss-nisplus libcrypt1

Package libgl1:i386 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

Package libgl1-mesa-dri:i386 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:

libgl1-amber-dri

E: Package 'libc6:i386' has no installation candidate

E: Package 'libgl1-mesa-dri:i386' has no installation candidate

E: Package 'libgl1:i386' has no installation candidate

我试过安装错误提示里提到的替代包，但问题还是没解决。也在论坛里搜过，知道这是个挺常见的问题，但所有别人分享的修复方法都没能解决我的情况。

有没有大佬能给点解决思路或者新的尝试方向？谢谢大家花时间看我的问题！

备注：内容来源于stack exchange，提问作者Mike F