unbuntu关于apt镜像的注意事项（不能用腾讯源）

省时间：不能用腾讯源，用阿里源就行

nano /etc/apt/sources.list.d/ubuntu.sources

Types: deb
URIs: http://mirrors.aliyun.com/ubuntu/
Suites: resolute resolute-updates resolute-backports
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpgTypes: deb
URIs: http://mirrors.aliyun.com/ubuntu/
Suites: resolute-security
Components: main restricted universe multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg

用腾讯源死活更新不了（广东电信）：Err:12 http://mirrors.cloud.tencent.com/ubuntu resolute/main amd64 c-n-f Metadata
  OpenSSL system call error: error:00000000:lib(0)::reason(0)  - openssl (104: Connection reset by peer) Error reading from server - read (104: Connection reset by peer) [IP: 240e:938:a06:0:40::2d 443]
  404  Not Found [IP: 240e:938:a06:0:40::2d 443]
  Hash Sum mismatch
  Hashes of expected file:
   - Filesize:31876 [weak]
   - SHA256:df45ee4b973e63f033605339fe168d3e13550aafeec88f03e5fb25f6ca0c364f
   - SHA1:526eb6a251f4555147628ad14b485c0430261c27 [weak]
   - MD5Sum:293d49f67dd6baa7f51f8e3b1a49aa3e [weak]
  Hashes of received file:
   - SHA256:122e6295f905ae86beda74c2b7ebe0747a95e5f94d7f88e7b9c3c7ea3344e4e1
   - SHA1:9763c482383cdd74ea2aed9f325231fd528c2a24 [weak]
   - MD5Sum:335f6c4fbe28c007c6fed021bc96d795 [weak]
   - Filesize:31876 [weak]
  Last modification reported: Sat, 24 Jan 2026 16:21:45 +0000
Get:18 http://mirrors.cloud.tencent.com/ubuntu resolute/universe Translation-en [6,321 kB]
Ign:18 http://mirrors.cloud.tencent.com/ubuntu resolute/universe Translation-en
Ign:18 http://mirrors.cloud.tencent.com/ubuntu resolute/universe Translation-en
Err:12 http://mirrors.cloud.tencent.com/ubuntu resolute/main amd64 c-n-f Metadata
  OpenSSL system call error: error:00000000:lib(0)::reason(0)  - openssl (104: Connection reset by peer) Error reading from server - read (104: Connection reset by peer) [IP: 240e:938:a06:0:40::2d 443]
  404  Not Found [IP: 240e:938:a06:0:40::2d 443]
  Hash Sum mismatch
  Hashes of expected file:
   - Filesize:31876 [weak]
   - SHA256:df45ee4b973e63f033605339fe168d3e13550aafeec88f03e5fb25f6ca0c364f
   - SHA1:526eb6a251f4555147628ad14b485c0430261c27 [weak]
   - MD5Sum:293d49f67dd6baa7f51f8e3b1a49aa3e [weak]
  Hashes of received file:
   - SHA256:122e6295f905ae86beda74c2b7ebe0747a95e5f94d7f88e7b9c3c7ea3344e4e1
   - SHA1:9763c482383cdd74ea2aed9f325231fd528c2a24 [weak]
   - MD5Sum:335f6c4fbe28c007c6fed021bc96d795 [weak]
   - Filesize:31876 [weak]
  Last modification reported: Sat, 24 Jan 2026 16:21:45 +0000
Get:44 https://mirrors.cloud.tencent.com/ubuntu resolute-security/restricted amd64 c-n-f Metadata [120 B]
Get:45 https://mirrors.cloud.tencent.com/ubuntu resolute-security/universe amd64 Components [212 B]
Get:46 https://mirrors.cloud.tencent.com/ubuntu resolute-security/universe amd64 c-n-f Metadata [116 B]
Get:47 https://mirrors.cloud.tencent.com/ubuntu resolute-security/multiverse amd64 Components [212 B]
Get:48 https://mirrors.cloud.tencent.com/ubuntu resolute-security/multiverse amd64 c-n-f Metadata [120 B]
Get:11 http://mirrors.cloud.tencent.com/ubuntu resolute/main amd64 Components [388 kB]
Get:17 http://mirrors.cloud.tencent.com/ubuntu resolute/universe amd64 Packages [15.6 MB]
Get:19 http://mirrors.cloud.tencent.com/ubuntu resolute/universe amd64 Components [4,331 kB]
Fetched 23.9 MB in 10s (2,492 kB/s)
Reading package lists... Done
E: Failed to fetch http://mirrors.cloud.tencent.com/ubuntu/dists/resolute/main/cnf/Commands-amd64  Hash Sum mismatch
   Hashes of expected file:
    - Filesize:31876 [weak]
    - SHA256:df45ee4b973e63f033605339fe168d3e13550aafeec88f03e5fb25f6ca0c364f
    - SHA1:526eb6a251f4555147628ad14b485c0430261c27 [weak]
    - MD5Sum:293d49f67dd6baa7f51f8e3b1a49aa3e [weak]
   Hashes of received file:
    - SHA256:122e6295f905ae86beda74c2b7ebe0747a95e5f94d7f88e7b9c3c7ea3344e4e1
    - SHA1:9763c482383cdd74ea2aed9f325231fd528c2a24 [weak]
    - MD5Sum:335f6c4fbe28c007c6fed021bc96d795 [weak]
    - Filesize:31876 [weak]
   Last modification reported: Sat, 24 Jan 2026 16:21:45 +0000
E: Failed to fetch http://mirrors.cloud.tencent.com/ubuntu/dists/resolute/universe/i18n/Translation-en.gz  File has unexpected size (6321516 != 6321464). Mirror sync in progress? [IP: 240e:938:a06:0:40::2d 443]
E: Some index files failed to download. They have been ignored, or old ones used instead.