Settings schema ‘…’ is not installed
# dconf-editor (dconf-editor:54647): GLib-GIO-ERROR **: 10:28:21.500: Settings schema 'ca.desrt.dconf-editor.Lib' is not installed Trace/breakpoint trap (core dumped) # vinagre (vinagre:54958): GLib-GIO-ERROR **: 10:29:43.428: Settings schema 'org.gnome.Vinagre' is not installed Trace/breakpoint trap (core dumped)
原因分析：
我们配置 apt-mark hold <pkg-name> 以防止意外升级，而该配置导致该问题。
解决方案：
apt-mark unhold <pkg-name>
APT had planned for dpkg to do more than it reported back
# apt install vino ... Processing triggers for libc-bin (2.31-0ubuntu9.5) ... W: APT had planned for dpkg to do more than it reported back (7 vs 9). Affected packages: vino:amd64
原因分析：
我们配置 apt-mark hold <pkg-name> 以防止意外升级，而该配置导致该问题。
解决方案：
apt-mark unhold <pkg-name>
This must be accepted explicitly before updates for this repository can be applied
问题描述
# apt-get update ... Reading package lists... Done N: Repository 'http://mirrors.tencentyun.com/debian buster InRelease' changed its 'Version' value from '10.9' to '10.11' E: Repository 'http://mirrors.tencentyun.com/debian buster InRelease' changed its 'Suite' value from 'stable' to 'oldstable' N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details. E: Repository 'http://mirrors.tencentyun.com/debian buster-updates InRelease' changed its 'Suite' value from 'stable-updates' to 'oldstable-updates' N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details. E: Repository 'http://mirrors.tencentyun.com/debian-security buster/updates InRelease' changed its 'Suite' value from 'stable' to 'oldstable' N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details. E: Repository 'http://mirrors.tencentyun.com/debian stretch-updates InRelease' changed its 'Suite' value from 'oldstable-updates' to 'oldoldstable-updates' N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details. E: Repository 'http://mirrors.tencentyun.com/debian-security stretch/updates InRelease' changed its 'Suite' value from 'oldstable' to 'oldoldstable' N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details. E: Repository 'http://mirrors.tencentyun.com/debian stretch Release' changed its 'Suite' value from 'oldstable' to 'oldoldstable' N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
原因分析
参考 –allow-releaseinfo-change 选项，文档进行相关的解释。
解决方案
apt-get update --allow-releaseinfo-change
W: The repository … does not have a Release file.
apt – What can I do if a repository/PPA does not have a Release file? – Ask Ubuntu
在添加仓库后，执行 apt-get update 产生如下错误：
W: The repository 'http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial Release' does not have a Release file.
原因分析
该源不支持当前的 Linux 发行版，因此我们无法使用该仓库（除非强行操作）。
解决方案
我们放弃使用官方未受到官方支持的仓库，否则可能会破坏 APT 依赖关系，出现难以解决的问题。
… server certificate verification failed. CAfile …
kali linux – Is it possible to have APT accept an “invalid” certificate? – Unix & Linux Stack Exchange
server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none – Stack Overflow
问题描述
... W: The repository 'https://downloads.opennebula.io/repo/6.0/Ubuntu/18.04 stable Release' does not have a Release file. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. E: Failed to fetch https://downloads.opennebula.io/repo/6.0/Ubuntu/18.04/dists/stable/opennebula/binary-arm64/Packages server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none ...
原因分析
系统版本较旧，没有最新的 CA 证书。
解决方案
正确的解决方法是导入 CA 证书
但是我们采用关闭 CA 检查的方式来解决问题：
// Do not verify peer certificate Acquire::https::Verify-Peer "false"; // Do not verify that certificate name matches server name Acquire::https::Verify-Host "false";