我有互联网连接。我尝试更改下载服务器，但没有成功。我收到以下错误消息。
W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise_main_source_Sources Hash Sum mismatch
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise_universe_source_Sources Hash Sum mismatch
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise_main_binary-i386_Packages Hash Sum mismatch
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise_universe_binary-i386_Packages Hash Sum mismatch
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise-security_main_source_Sources Hash Sum mismatch
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise-security_universe_source_Sources Hash Sum mismatch
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise-security_main_binary-i386_Packages Hash Sum mismatch
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise-security_universe_binary-i386_Packages Hash Sum mismatch
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise-updates_main_source_Sources Hash Sum mismatch
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise-updates_universe_source_Sources Hash Sum mismatch
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise-updates_main_binary-i386_Packages Hash Sum mismatch
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise-updates_universe_binary-i386_Packages Hash Sum mismatch
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise_main_i18n_Translation-en Encountered a section with no Package: header
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise_universe_i18n_Translation-en Encountered a section with no Package: header
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise-security_main_i18n_Translation-en Encountered a section with no Package: header
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise-security_universe_i18n_Translation-en Encountered a section with no Package: header
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise-updates_main_i18n_Translation-en Encountered a section with no Package: header
, W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_precise-updates_universe_i18n_Translation-en Encountered a section with no Package: header
, E:Some index files failed to download. They have been ignored, or old ones used instead.
答案1
选项：
1) 重新调整无线适配器天线。如果是 USB，请尝试使用 USB 延长线并将其放置在更高的位置。
2）如果可能，尝试通过有线（以太网电缆）连接
如果 #1 解决了问题，则该问题是由射频干扰引起的。
如果方法 2 解决了问题，则仍然可能是射频干扰或无线适配器故障。