几天前，我在装有 Ubuntu 20.04.01 LTS 的联想 Thinkpad T490 上安装了标准系统更新。重启后，我的音频设备电池状态消失了。
我已经设法手动启动了 pulseaudio ( pulseaudio --start)。这样做之后，声音暂时可以正常工作。但是，我无法在启动时将 pulseaudio 作为服务启动。即，systemctl --system enable pulseaudio.service无法正常工作。
此外，电池状态既未显示在状态栏中，也未显示在系统设置中。此外，upower无法正常工作。尝试启动服务时出现超时。
我知道这个问题听起来像是两个不同的问题，但两个问题都来自同一个更新，并且可能与之相关systemd。
以下是最近安装的更新的（长）列表：
2020-11-03:
linux-modules-extra-5.4.0-48-generic:amd64
linux-image-5.4.0-48-generic:amd64
linux-modules-5.4.0-48-generic:amd64
linux-headers-5.4.0-48-generic:amd64
linux-headers-5.4.0-48:all
perl-base:amd64
perl-modules-5.30:all
libperl5.30:amd64
perl:amd64
man-db:amd64
libc-bin:amd64
libgdm1:amd64
libglib2.0-0:amd64
libc-bin:amd64
systemd:amd64
man-db:amd64
dbus:amd64
gir1.2-gdm-1.0:amd64
gdm3:amd64
openjdk-11-jre-headless:amd64
openjdk-11-jre:amd64
mime-support:all
hicolor-icon-theme:all
gnome-menus:amd64
desktop-file-utils:amd64
libaccountsservice0:amd64
accountsservice:amd64
dbus:amd64
libc-bin:amd64
gir1.2-accountsservice-1.0:amd64
distro-info-data:all
tzdata:all
ca-certificates:all
man-db:amd64
ca-certificates:all
libwbclient0:amd64
samba-libs:amd64
libsmbclient:amd64
man-db:amd64
libc-bin:amd64
python3-cryptography:amd64
libmysqlclient21:amd64
libc-bin:amd64
2020-11-04:
dbus-user-session:amd64
ubuntu-minimal:amd64
netplan.io:amd64
systemd:amd64
libblkid1:i386
libgcrypt20:i386
liblz4-1:i386
liblzma5:i386
libpcre2-8-0:i386
libselinux1:i386
systemd-timesyncd:amd64
libsystemd0:amd64
libsystemd0:i386
libip4tc2:i386
libapparmor1:i386
libgnome-bluetooth13:amd64
bind9-libs:amd64
python3-problem-report:all
libssl1.1:i386
libargon2-1:i386
libacl1:i386
libnetplan0:amd64
libseccomp2:i386
libcap2:i386
python3-apport:all
grub-common:amd64
alsa-utils:amd64
libcap-ng0:i386
libgmp10:i386
libp11-kit0:i386
libaudit1:i386
libuuid1:i386
spice-vdagent:amd64
gnome-bluetooth:amd64
libdevmapper1.02.1:i386
libnettle7:i386
gnome-control-center-faces:all
libmount1:i386
libplymouth5:amd64
libtasn1-6:i386
build-essential:amd64
libcryptsetup12:amd64
libjson-c4:i386
grub-efi-amd64-bin:amd64
gir1.2-gnomebluetooth-1.0:amd64
bind9-host:amd64
libkmod2:i386
libhogweed5:i386
grub2-common:amd64
grub-pc-bin:amd64
apport:all
grub-pc:amd64
libgnutls30:i386
libpam0g:i386
apport-gtk:all
libcryptsetup12:i386
bind9-dnsutils:amd64
grub-efi-amd64-signed:amd64
dnsutils:all
systemd:i386
systemd-timesyncd:i386
snapd:amd64
systemd-sysv:amd64
plymouth:amd64
libnss-systemd:amd64
plymouth-theme-ubuntu-text:amd64
libpam-systemd:amd64
plymouth-label:amd64
plymouth-theme-ubuntu-logo:amd64
plymouth-theme-spinner:amd64
install-info:amd64
desktop-file-utils:amd64
mime-support:all
hicolor-icon-theme:all
gnome-menus:amd64
libgweather-common:all
gnome-control-center-data:all
libglib2.0-0:amd64
libc-bin:amd64
libgweather-3-16:amd64
man-db:amd64
dbus:amd64
gnome-control-center:amd64
gir1.2-gweather-3.0:amd64
initramfs-tools:all
libc-bin:amd64
chromium-codecs-ffmpeg-extra:amd64
python3-distupgrade:all
libasound2-data:all
ubuntu-release-upgrader-core:all
libudev1:amd64
libudev1:i386
libasound2:amd64
ubuntu-release-upgrader-gtk:all
libatopology2:amd64
udev:amd64
systemd:i386
man-db:amd64
libc-bin:amd64
initramfs-tools:all
alsa-base:all
alsa-base:all
pulseaudio:amd64
systemd:i386
man-db:amd64
dbus:amd64
2020-11-05:
liburl-dispatcher1:amd64
libfcitx-utils0:amd64
libbamf3-2:amd64
libindicator3-7:amd64
libfcitx-gclient1:amd64
libunity-gtk2-parser0:amd64
libido3-0.1-0:amd64
libunity-gtk3-parser0:amd64
jayatana:amd64
libgnome-panel0:amd64
liblightdm-gobject-1-0:amd64
indicator-common:all
gnome-screensaver:amd64
accountsservice-ubuntu-schemas:all
ubuntu-touch-sounds:all
indicator-application:amd64
indicator-printers:amd64
indicator-applet:amd64
desktop-file-utils:amd64
mime-support:all
hicolor-icon-theme:all
gnome-menus:amd64
unity-settings-daemon-schemas:all
unity-gtk-module-common:all
indicator-sound:amd64
indicator-power:amd64
indicator-messages:amd64
indicator-keyboard:amd64
indicator-datetime:amd64
indicator-bluetooth:amd64
indicator-appmenu:amd64
libglib2.0-0:amd64
libc-bin:amd64
unity-gtk2-module:amd64
man-db:amd64
indicator-session:amd64
unity-gtk3-module:amd64
有任何想法吗？
答案1
我能够解决问题。正如所怀疑的那样，systemd这是真正的问题。重新安装后，相应的声音和电池服务再次正常运行。