有个上网本,虽然配置很差,但是安装的是arch,这不长时间不滚动更新出问题了,

 :: Proceed with installation? [Y/n]
(/) checking keys in keyring [##################################################] %
(/) checking package integrity [##################################################] %
error: jasper: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust
:: File /var/cache/pacman/pkg/jasper-2.0.--x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] n
error: krb5: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust
:: File /var/cache/pacman/pkg/krb5-1.13.--x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] n
error: libpsl: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust
:: File /var/cache/pacman/pkg/libpsl-0.16.--x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] n
error: libwmf: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust
:: File /var/cache/pacman/pkg/libwmf-0.2.8.4--x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] n
error: shutter: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust
:: File /var/cache/pacman/pkg/shutter-0.93.--any.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] n
error: failed to commit transaction (invalid or corrupted package)
Errors occurred, no packages were upgraded.

百度关键词signature from   archlinux

百度贴吧的解决方法是

 # pacman-key --init
# pacman-key --populate

失败

想通过卸载的方式结果

 [local1@lqspc ~]$ sudo pacman -Rcn jasper
checking dependencies...
:: avahi optionally requires gtk3: avahi-discover-standalone, bshell, bssh, bvnc
:: avahi optionally requires gtk2: gtk2 bindings
:: avahi optionally requires pygtk: avahi-bookmarks, avahi-discover
:: gegl02 optionally requires librsvg: svg plugin
:: gegl02 optionally requires jasper: jasper plugin
:: imagemagick optionally requires ghostscript: for Ghostscript support
:: imagemagick optionally requires librsvg: for SVG support
:: libwmf optionally requires gdk-pixbuf2: for pixbuf loader
:: lxde-common optionally requires lxde-icon-theme: default icon theme
:: pinentry optionally requires gtk2: gtk2 backend
:: pinentry optionally requires gcr: gnome3 backend
:: xdg-utils optionally requires libgnome: for GNOME support in xdg-open
:: xdg-utils optionally requires pcmanfm: for LXDE support in xdg-open Packages () adwaita-icon-theme-3.20- bluefish-2.2.- chromium-53.0.2785.116- emacs-25.1- evince-3.20.- fcitx-4.2.9.1-
fcitx-gtk2-4.2.9.1- fcitx-gtk3-4.2.9.1- fcitx-qt4-4.2.9.1- file-roller-3.20.- flashplugin-11.2.202.635- gcr-3.20.-
gdk-pixbuf2-2.34.- gedit-3.20.- ghostscript-9.19- gnome-desktop-:3.20.- gnome-perl-1.045- gnome-vfs-perl-1.082-
gnomecanvas-perl-1.002- goocanvas1-1.0.- gpicview-0.2.- gspell-1.0.- gtk-engines-2.21.-
gtk-update-icon-cache-3.20.- gtk2-2.24.- gtk2-perl-1.2498- gtk3-3.20.- gtkimageview-1.6.- gtksourceview3-3.20.-
gvfs-1.28.- libbonoboui-2.24.- libfm-gtk2-1.2.- libglade-2.6.- libgnome-2.32.- libgnomecanvas-2.30.-
libgnomeui-2.24.- libkeybinder2-0.3.- libnotify-0.7.- libpeas-1.18.- librsvg-:2.40.- libspectre-0.2.-
libunique-1.1.- libwnck-2.31.- lxappearance-0.6.- lxappearance-obconf-0.2.- lxde-icon-theme-0.5.- lxdm-0.5.-
lxinput-0.3.- lxlauncher-0.2.- lxmusic-0.4.- lxpanel-0.8.- lxrandr-0.3.- lxsession-:0.5.- lxtask-0.1.-
lxterminal-0.2.- network-manager-applet-1.4.- nm-connection-editor-1.4.- obconf-2.0.- openbox-3.6.- pcmanfm-1.2.-
perl-gnome2-wnck-0.16- perl-goo-canvas-0.06- perl-gtk2-imageview-0.05- perl-gtk2-unique-0.05- pygtk-2.24.-
shutter-0.93.- vte-0.28.- jasper-1.900.- Total Removed Size: 678.11 MiB :: Do you want to remove these packages? [Y/n] n

查看wiki看到

Signature from "User <email@gmail.com>" is unknown trust, installation failed
查看pacman-key#Resetting all the keys. 或试试:
更新已知密钥:pacman-key --refresh-keys;
手动升级archlinux-keyring软件包:pacman -S archlinux-keyring.

这么做了之后,好像报错变了,也许不是这么做导致的,无论如何,下面的新错误是

 Total Installed Size:  1787.46 MiB
Net Upgrade Size: 37.77 MiB :: Proceed with installation? [Y/n]
(/) checking keys in keyring [##################################################] %
(/) checking package integrity [##################################################] %
(/) loading package files [##################################################] %
(/) checking for file conflicts [##################################################] %
error: failed to commit transaction (conflicting files)
ttf-dejavu: /etc/fonts/conf.d/-unhint-small-dejavu-sans-mono.conf exists in filesystem
ttf-dejavu: /etc/fonts/conf.d/-unhint-small-dejavu-sans.conf exists in filesystem
ttf-dejavu: /etc/fonts/conf.d/-unhint-small-dejavu-serif.conf exists in filesystem
ttf-dejavu: /etc/fonts/conf.d/-dejavu-sans-mono.conf exists in filesystem
ttf-dejavu: /etc/fonts/conf.d/-dejavu-sans.conf exists in filesystem
ttf-dejavu: /etc/fonts/conf.d/-dejavu-serif.conf exists in filesystem
Errors occurred, no packages were upgraded.

之后又测试了先更新tzdata,然后更新pacman,发现pacman并没有新版本更新,结果依然如此,那么就采取了强制更新。 正在解决的方案,突然发现有人提到了强制更新,

进展如下

 extra/xproto                         7.0.-                   7.0.-                     0.00 MiB
extra/xterm - - 0.00 MiB
core/xz 5.2.- 5.2.- 0.00 MiB
core/zlib 1.2.- :1.2.- 0.00 MiB Total Installed Size: 1785.65 MiB
Net Upgrade Size: 37.76 MiB :: Proceed with installation? [Y/n]
(/) checking keys in keyring [##################################################] %
(/) checking package integrity [##################################################] %
(/) loading package files [##################################################] %
(/) checking for file conflicts [##################################################] %
(/) checking available disk space [##################################################] %
:: Processing package changes...
(/) removing fuse [##################################################] %
( /) upgrading iana-etc [##################################################] %
( /) upgrading attr [##################################################] %
( /) upgrading acl [##################################################] %
( /) upgrading ncurses [##################################################] %
( /) upgrading readline [##################################################] %
( /) upgrading zlib [##################################################] %
( /) upgrading bash [##################################################] %

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