Sur Khosh's questions

因此，几年后我决定使用我拥有的相同 iso 文件再次安装 fedora。现在我想更新它，当我输入时sudo dnf upgrade它会给我这个：

Copr repo for PyCharm owned by phracek          0.0  B/s |   0  B     00:03    
Errors during downloading metadata for repository 'phracek-PyCharm':
  - Curl error (7): Couldn't connect to server for https://copr-be.cloud.fedoraproject.org/results/phracek/PyCharm/fedora-37-x86_64/repodata/repomd.xml [Failed to connect to copr-be.cloud.fedoraproject.org port 443 after 242 ms: Connection refused]
  - Curl error (7): Couldn't connect to server for https://copr-be.cloud.fedoraproject.org/results/phracek/PyCharm/fedora-37-x86_64/repodata/repomd.xml [Failed to connect to copr-be.cloud.fedoraproject.org port 443 after 252 ms: Connection refused]
  - Curl error (7): Couldn't connect to server for https://copr-be.cloud.fedoraproject.org/results/phracek/PyCharm/fedora-37-x86_64/repodata/repomd.xml [Failed to connect to copr-be.cloud.fedoraproject.org port 443 after 1750 ms: Network is unreachable]
  - Curl error (7): Couldn't connect to server for https://copr-be.cloud.fedoraproject.org/results/phracek/PyCharm/fedora-37-x86_64/repodata/repomd.xml [Failed to connect to copr-be.cloud.fedoraproject.org port 443 after 1746 ms: Network is unreachable]
Error: Failed to download metadata for repo 'phracek-PyCharm': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried
Fedora 37 - x86_64                              0.0  B/s |   0  B     00:00    
Errors during downloading metadata for repository 'fedora':
  - Curl error (6): Couldn't resolve host name for https://mirrors.fedoraproject.org/metalink?repo=fedora-37&arch=x86_64 [Could not resolve host: mirrors.fedoraproject.org]
Error: Failed to download metadata for repo 'fedora': Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for https://mirrors.fedoraproject.org/metalink?repo=fedora-37&arch=x86_64 [Could not resolve host: mirrors.fedoraproject.org]

我对 Linux 的经验很少，我不知道如何解决它。我还必须补充一点，我国受到软呢帽的认可。

我有一台 MSI 一体机，运行 Windows 10 和 ubuntu。通常我会启动它并进入 ubuntu 启动页面，并且我已经对其进行了配置，这样如果我在 3 秒后没有选择任何选项，它将启动第一个选项，即 Win 10。但是在更新到 ubuntu 23 后我的键盘在启动页面上不再起作用，而且第一个选项已更改为内存测试（蓝屏），所以现在我无法选择任何操作系统。我应该怎么办？两个 USB 插槽上的板载或外部键盘均不起作用。快速启动也打开了，我无法进入BIOS设置。