早上好，
$systemctl --failed：
UNIT LOAD ACTIVE SUB DESCRIPTION
● fwupd-refresh.service loaded failed failed Refresh fwupd metadata and update motd
● snap.canonical-livepatch.canonical-livepatchd.service loaded failed failed Service for snap application canonical-livepatch.canonical-livepatchd
● sssd.service loaded failed failed System Security Services Daemon
$sudo systemctl status fwupd-refresh.service：
● fwupd-refresh.service - Refresh fwupd metadata and update motd
Active: failed (Result: exit-code) since Tue 2020-12-15 15:06:26 EET; 28min ago
Docs: man:fwupdmgr(1)
Main PID: 5120 (code=exited, status=1/FAILURE)
Dec 15 15:05:24 {NAME} systemd[1]: Starting Refresh fwupd metadata and update motd...
Dec 15 15:05:25 {NAME} fwupdmgr[5120]: Updating lvfs
Dec 15 15:06:26 {NAME} systemd[1]: fwupd-refresh.service: Main process exited, code=exited, status=1/FAILURE
Dec 15 15:06:26 {NAME} systemd[1]: fwupd-refresh.service: Failed with result 'exit-code'.
Dec 15 15:06:26 {NAME} systemd[1]: Failed to start Refresh fwupd metadata and update motd.
$sudo systemctl status snap.canonical-livepatch.canonical-livepatchd.service：
● snap.canonical-livepatch.canonical-livepatchd.service - Service for snap application canonical-livepatch.canonical-livepatchd
Loaded: loaded (/etc/systemd/system/snap.canonical-livepatch.canonical-livepatchd.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Tue 2020-12-15 14:25:29 EET; 1h 12min ago
Main PID: 2170 (code=exited, status=1/FAILURE)
Dec 15 14:25:29 {NAME} systemd[1]: snap.canonical-livepatch.canonical-livepatchd.service: Scheduled restart job, restart counter is at 6.
Dec 15 14:25:29 {NAME} systemd[1]: Stopped Service for snap application canonical-livepatch.canonical-livepatchd.
Dec 15 14:25:29 {NAME} systemd[1]: snap.canonical-livepatch.canonical-livepatchd.service: Start request repeated too quickly.
Dec 15 14:25:29 {NAME} systemd[1]: snap.canonical-livepatch.canonical-livepatchd.service: Failed with result 'exit-code'.
Dec 15 14:25:29 {NAME} systemd[1]: Failed to start Service for snap application canonical-livepatch.canonical-livepatchd.
$sudo systemctl status sssd.service：
● sssd.service - System Security Services Daemon
Loaded: loaded (/lib/systemd/system/sssd.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Tue 2020-12-15 14:25:21 EET; 1h 13min ago
Main PID: 1760 (code=exited, status=4)
Dec 15 14:25:21 {NAME} systemd[1]: sssd.service: Scheduled restart job, restart counter is at 6.
Dec 15 14:25:21 {NAME} systemd[1]: Stopped System Security Services Daemon.
Dec 15 14:25:21 {NAME} systemd[1]: sssd.service: Start request repeated too quickly.
Dec 15 14:25:21 {NAME} systemd[1]: sssd.service: Failed with result 'exit-code'.
Dec 15 14:25:21 {NAME} systemd[1]: Failed to start System Security Services Daemon.
编辑：刚刚发现以下内容回答对于 sssd 因为我使用的是 HDD 而不是 SSD...是的，我知道 20.10 不是 LTS 所以我无法享受实时补丁，但服务是否因为这个原因失败了？