carrot@myArch ~]$ sudo pacman -Syu
[sudo] carrot 的密码：
:: 正在同步软件包数据库...
错误：未能同步所有数据库（软件仓库没有配置服务器信息）
[carrot@myArch ~]$ sudo pacman -v
警告：database file for 'core' does not exist (use '-Sy' to download)
警告：database file for 'extra' does not exist (use '-Sy' to download)
警告：database file for 'multilib' does not exist (use '-Sy' to download)
警告：database file for 'custom' does not exist (use '-Sy' to download)
Root : /
Conf File : /etc/pacman.conf
DB Path : /var/lib/pacman/
Cache Dirs: /var/cache/pacman/pkg/
Hook Dirs : /usr/share/libalpm/hooks/ /etc/pacman.d/hooks/
Lock File : /var/lib/pacman/db.lck
Log File : /var/log/pacman.log
GPG Dir : /etc/pacman.d/gnupg/
Targets : 无
错误：没有指定操作 (使用 -h 获取帮助)
[carrot@myArch ~]$ cat /etc/pacman.d/mirrorlist
##
## Arch Linux repository mirrorlist
## Generated on 2026-01-18
##
#--------------------------------------------------------------------------
# China
Server = [url]https://mirrors.aliyun.com/archlinux/$repo/os/$arch[/url]
Server = [url]https://mirrors.tuna.tsinghua.edu.cn/archlinux/$repo/os/$arch[/url]
Server = [url]https://mirrors.cloud.tensent.com/archlinux/$repo/os/$arch[/url]
Server = [url]https://mirrors.ustc.edu.cn/archlinux/$repo/os/$arch[/url]
Server = [url]https://repo.huaweicloud.com/archlinux/$repo/os/$arch[/url]
Server = [url]https://mirrors.sjtug.sjtu.edu.cn/archlinux/$repo/os/$arch[/url]
Server = [url]http://mirrors.163.com/archlinux/$repo/os/$arch[/url]
# Sys
Server = [url]http://mirrors.163.com/archlinux/$repo/os/$arch[/url]
Server = [url]https://archlinux.thaller.ws/$repo/os/$arch[/url]
Server = [url]https://at.arch.mirror.kescher.at/$repo/os/$arch[/url]
Server = [url]https://de.arch.mirror.kescher.at/$repo/os/$arch[/url]
Server = [url]https://mirror.theo546.fr/archlinux/$repo/os/$arch[/url]
Server = [url]https://berlin.mirror.pkgbuild.com/$repo/os/$arch[/url]
Server = [url]https://london.mirror.pkgbuild.com/$repo/os/$arch[/url]
Server = [url]https://losangeles.mirror.pkgbuild.com/$repo/os/$arch[/url]
Server = [url]https://singapore.mirror.pkgbuild.com/$repo/os/$arch[/url]
Server = [url]https://taipei.mirror.pkgbuild.com/$repo/os/$arch[/url]
Server = [url]https://mirror.ufscar.br/archlinux/$repo/os/$arch[/url]
Server = [url]https://mirror.moson.org/arch/$repo/os/$arch[/url]
Server = [url]https://al.arch.niranjan.co/$repo/os/$arch[/url]
Server = [url]https://at.arch.niranjan.co/$repo/os/$arch[/url]
Server = [url]https://de.arch.niranjan.co/$repo/os/$arch[/url]
Server = [url]https://in.arch.niranjan.co/$repo/os/$arch[/url]
Server = [url]https://nz.arch.niranjan.co/$repo/os/$arch[/url]
Server = [url]https://ro.arch.niranjan.co/$repo/os/$arch[/url]
Server = [url]https://tr.arch.niranjan.co/$repo/os/$arch[/url]
Server = [url]https://us.arch.niranjan.co/$repo/os/$arch[/url]
Server = [url]https://mirror.osbeck.com/archlinux/$repo/os/$arch[/url]
看看你的/etc/pacman.conf。
另外这个[url]是怎么回事？真的被写在配置文件里的吗？
[carrot@myArch ~]$ cat /etc/pacman.conf
#
# /etc/pacman.conf
#
# See the pacman.conf(5) manpage for option and repository directives
#
# GENERAL OPTIONS
#
[options]
# The following paths are commented out with their default values listed.
# If you wish to use different paths, uncomment and update the paths.
#RootDir = /
#DBPath = /var/lib/pacman/
#CacheDir = /var/cache/pacman/pkg/
#LogFile = /var/log/pacman.log
#GPGDir = /etc/pacman.d/gnupg/
#HookDir = /etc/pacman.d/hooks/
HoldPkg = pacman glibc
#XferCommand = /usr/bin/curl -L -C - -f -o %o %u
#XferCommand = /usr/bin/wget --passive-ftp -c -O %o %u
#CleanMethod = KeepInstalled
Architecture = auto
# Pacman won't upgrade packages listed in IgnorePkg and members of IgnoreGroup
#IgnorePkg =
#IgnoreGroup =
#NoUpgrade =
#NoExtract =
# Misc options
#UseSyslog
#Color
#NoProgressBar
CheckSpace
#VerbosePkgLists
ParallelDownloads = 5
DownloadUser = alpm
#DisableSandboxFilesystem
#DisableSandboxSyscalls
# By default, pacman accepts packages signed by keys that its local keyring
# trusts (see pacman-key and its man page), as well as unsigned packages.
SigLevel = Required DatabaseOptional
LocalFileSigLevel = Optional
#RemoteFileSigLevel = Required
# NOTE: You must run `pacman-key --init` before first using pacman; the local
# keyring can then be populated with the keys of all official Arch Linux
# packagers with `pacman-key --populate archlinux`.
#
# REPOSITORIES
# - can be defined here or included from another file
# - pacman will search repositories in the order defined here
# - local/custom mirrors can be added here or in separate files
# - repositories listed first will take precedence when packages
# have identical names, regardless of version number
# - URLs will have $repo replaced by the name of the current repo
# - URLs will have $arch replaced by the name of the architecture
#
# Repository entries are of the format:
# [repo-name]
# Server = ServerName
# Include = IncludePath
#
# The header [repo-name] is crucial - it must be present and
# uncommented to enable the repo.
#
# The testing repositories are disabled by default. To enable, uncomment the
# repo name header and Include lines. You can add preferred servers immediately
# after the header, and they will be used before the default mirrors.
#[core-testing]
#Include = /etc/pacman.d/mirrorlist
[core]
Include = /etc/pacman.d/mirrorlist
#[extra-testing]
#Include = /etc/pacman.d/mirrorlist
[extra]
Include = /etc/pacman.d/mirrorlist
# If you want to run 32 bit applications on your x86_64 system,
# enable the multilib repositories as required here.
#[multilib-testing]
#Include = /etc/pacman.d/mirrorlist
[multilib]
Include = /etc/pacman.d/mirrorlist
# An example of a custom package repository. See the pacman manpage for
# tips on creating your own repositories.
[custom]
#SigLevel = Optional TrustAll
#Server = file:///home/custompkgs
#[archlinuxcn]
#Server = https://mirrors.ustc.edu.cn/archlinuxcn/$arch # 中国科学技术大学开源镜像站
#Server = https://mirrors.tuna.tsinghua.edu.cn/archlinuxcn/$arch # 清华大学开源软件镜像站
#Server = https://mirrors.hit.edu.cn/archlinuxcn/$arch # 哈尔滨工业大学开源镜像站
#Server = https://repo.huaweicloud.com/archlinuxcn/$arch # 华为开源镜像站
[carrot@myArch ~]$
carrot@myArch ~]$ cat /etc/pacman.d/mirrorlist
##
## Arch Linux repository mirrorlist
## Generated on 2026-01-18
##
#--------------------------------------------------------------------------
# China
Server = https://mirrors.aliyun.com/archlinux/$repo/os/$arch
Server = https://mirrors.tuna.tsinghua.edu.cn/archlinux/$repo/os/$arch
Server = https://mirrors.cloud.tensent.com/archlinux/$repo/os/$arch
Server = https://mirrors.ustc.edu.cn/archlinux/$repo/os/$arch
Server = https://repo.huaweicloud.com/archlinux/$repo/os/$arch
Server = https://mirrors.sjtug.sjtu.edu.cn/archlinux/$repo/os/$arch
Server = http://mirrors.163.com/archlinux/$repo/os/$arch
# Sys
Server = http://mirrors.163.com/archlinux/$repo/os/$arch
Server = https://archlinux.thaller.ws/$repo/os/$arch
Server = https://at.arch.mirror.kescher.at/$repo/os/$arch
Server = https://de.arch.mirror.kescher.at/$repo/os/$arch
Server = https://mirror.theo546.fr/archlinux/$repo/os/$arch
Server = https://berlin.mirror.pkgbuild.com/$repo/os/$arch
Server = https://london.mirror.pkgbuild.com/$repo/os/$arch
Server = https://losangeles.mirror.pkgbuild.com/$repo/os/$arch
Server = https://singapore.mirror.pkgbuild.com/$repo/os/$arch
Server = https://taipei.mirror.pkgbuild.com/$repo/os/$arch
Server = https://mirror.ufscar.br/archlinux/$repo/os/$arch
Server = https://mirror.moson.org/arch/$repo/os/$arch
Server = https://al.arch.niranjan.co/$repo/os/$arch
Server = https://at.arch.niranjan.co/$repo/os/$arch
Server = https://de.arch.niranjan.co/$repo/os/$arch
Server = https://in.arch.niranjan.co/$repo/os/$arch
Server = https://nz.arch.niranjan.co/$repo/os/$arch
Server = https://ro.arch.niranjan.co/$repo/os/$arch
Server = https://tr.arch.niranjan.co/$repo/os/$arch
Server = https://us.arch.niranjan.co/$repo/os/$arch
Server = https://mirror.osbeck.com/archlinux/$repo/os/$arch
[carrot@myArch ~]$ sudo pacman -Syuu
:: 正在同步软件包数据库...
错误：未能同步所有数据库（软件仓库没有配置服务器信息）
[carrot@myArch ~]$
[url][/url]可能在复制时不小心加入了标签，删除后重启系统问题依旧存在
实际上我已经安装好了系统和KDE桌面环境了。昨天下载了一些KDE桌面商店的程序，有些成功安装了，有些进度一直是0%，这个时候我就发现我的pacman没法用了。之后我就尝试更换了一些软件源，问题一直没有解决。
file /etc/pacman.conf /etc/pacman.d/mirrorlist看看呢？
那个custom没注释掉
对哦，在这儿呢。
火眼金睛!