$ sudo add-apt-repository ppa:gezakovacs/ppa
UNetbootin http://unetbootin.github.io/ is a cross-platform utility that can create Live USB systems and can load a variety of system utilities or install various Linux distributions and other operating systems without a CD.
Homepage: http://unetbootin.github.io/
Wiki: http://unetbootin.wiki.sourceforge.net/
Downloads: http://sourceforge.net/project/showfiles.php?group_id=222386
Sourceforge: http://sourceforge.net/projects/unetbootin
Launchpad: http://launchpad.net/unetbootin
More info: https://launchpad.net/~gezakovacs/+archive/ubuntu/ppa
Press [ENTER] to continue or Ctrl-c to cancel adding it.
Hit:1 http://archive.ubuntu.com/ubuntu eoan InRelease
Get:2 http://archive.ubuntu.com/ubuntu eoan-updates InRelease [97.5 kB]
Get:3 http://archive.ubuntu.com/ubuntu eoan-backports InRelease [88.8 kB]
Get:4 http://archive.ubuntu.com/ubuntu eoan-security InRelease [97.5 kB]
Get:5 http://archive.ubuntu.com/ubuntu eoan-updates/main amd64 DEP-11 Metadata [73.0 kB]
Get:6 http://archive.ubuntu.com/ubuntu eoan-updates/main DEP-11 48x48 Icons [9,953 B]
Get:7 http://archive.ubuntu.com/ubuntu eoan-updates/main DEP-11 64x64 Icons [15.1 kB]
Get:8 http://archive.ubuntu.com/ubuntu eoan-updates/universe amd64 DEP-11 Metadata [25.9 kB]
Get:9 http://archive.ubuntu.com/ubuntu eoan-updates/universe DEP-11 48x48 Icons [18.5 kB]
Get:10 http://archive.ubuntu.com/ubuntu eoan-updates/universe DEP-11 64x64 Icons [22.9 kB]
Get:11 http://archive.ubuntu.com/ubuntu eoan-backports/universe amd64 DEP-11 Metadata [8,068 B]
Get:12 http://archive.ubuntu.com/ubuntu eoan-security/main amd64 DEP-11 Metadata [204 B]
Get:13 http://archive.ubuntu.com/ubuntu eoan-security/universe amd64 DEP-11 Metadata [1,672 B]
Get:14 http://archive.ubuntu.com/ubuntu eoan-security/universe DEP-11 64x64 Icons [6,242 B]
Err:15 http://ppa.launchpad.net/gezakovacs/ppa/ubuntu eoan InRelease
Cannot initiate the connection to ppa.launchpad.net:80 (2001:67c:1560:8008::15). - connect (101: Network is unreachable) Could not connect to ppa.launchpad.net:80 (91.189.95.83), connection timed out
Fetched 465 kB in 31s (15.2 kB/s)
Reading package lists... Done
W: Failed to fetch http://ppa.launchpad.net/gezakovacs/ppa/ubuntu/dists/eoan/InRelease Cannot initiate the connection to ppa.launchpad.net:80 (2001:67c:1560:8008::15). - connect (101: Network is unreachable) Could not connect to ppa.launchpad.net:80 (91.189.95.83), connection timed out
W: Some index files failed to download. They have been ignored, or old ones used instead.
我尝试了论坛中提供的大多数选项,但都不起作用。例如 此链接。我尝试禁用 IPV6,但没有用,我尝试将服务器从主服务器更改为国家服务器(在软件更新应用程序中)仍然一样。
答案1
这完全是由于学院/大学提供的互联网连接。他们屏蔽了一些东西。我在家里也试过同样的事情,一点问题都没有。