我有一台 HP Z420 工作站，我需要等待大约 2 分钟才能看到登录屏幕。
boot.log 中没有什么特别的
------------ Mon May 01 14:09:40 CEST 2023 ------------
[[0;32m OK [0m] Listening on [0;1;39mLoad/Save RF Kill Switch Status /dev/rfkill Watch[0m.
[[0;32m OK [0m] Started [0;1;39mShow Plymouth Boot Screen[0m.
[[0;32m OK [0m] Started [0;1;39mForward Password Requests to Plymouth Directory Watch[0m.
[[0;32m OK [0m] Reached target [0;1;39mLocal Encrypted Volumes[0m.
[[0;32m OK [0m] Found device [0;1;39mWDC_WD5000AAKX-75U6AA0 EFI\x20system\x20partition[0m.
Starting [0;1;39mFile System Check on /dev/disk/by-uuid/BC5C-95FE[0m...
[[0;32m OK [0m] Started [0;1;39mFile System Check Daemon to report status[0m.
[[0;32m OK [0m] Finished [0;1;39mFlush Journal to Persistent Storage[0m.
Starting [0;1;39mLoad Kernel Module chromeos_pstore[0m...
Starting [0;1;39mLoad Kernel Module efi_pstore[0m...
Starting [0;1;39mLoad Kernel Module pstore_blk[0m...
Starting [0;1;39mLoad Kernel Module pstore_zone[0m...
Starting [0;1;39mLoad Kernel Module ramoops[0m...
[[0;32m OK [0m] Finished [0;1;39mFile System Check on /dev/disk/by-uuid/BC5C-95FE[0m.
[[0;32m OK [0m] Finished [0;1;39mLoad Kernel Module efi_pstore[0m.
[[0;32m OK [0m] Finished [0;1;39mLoad Kernel Module pstore_blk[0m.
[[0;32m OK [0m] Finished [0;1;39mLoad Kernel Module pstore_zone[0m.
[[0;32m OK [0m] Finished [0;1;39mLoad Kernel Module ramoops[0m.
Mounting [0;1;39m/boot/efi[0m...
[[0;32m OK [0m] Finished [0;1;39mLoad Kernel Module chromeos_pstore[0m.
[[0;32m OK [0m] Mounted [0;1;39m/boot/efi[0m.
[[0;32m OK [0m] Reached target [0;1;39mLocal File Systems[0m.
Starting [0;1;39mLoad AppArmor profiles[0m...
Starting [0;1;39mSet console font and keymap[0m...
Starting [0;1;39mClean up any mess left by 0dns-up[0m...
Starting [0;1;39mTell Plymouth To Write Out Runtime Data[0m...
Starting [0;1;39mCreate Volatile Files and Directories[0m...
Starting [0;1;39mUncomplicated firewall[0m...
[[0;32m OK [0m] Finished [0;1;39mSet console font and keymap[0m.
[[0;32m OK [0m] Finished [0;1;39mTell Plymouth To Write Out Runtime Data[0m.
[[0;32m OK [0m] Finished [0;1;39mUncomplicated firewall[0m.
[[0;32m OK [0m] Reached target [0;1;39mPreparation for Network[0m.
[[0;32m OK [0m] Finished [0;1;39mClean up any mess left by 0dns-up[0m.
[[0;32m OK [0m] Finished [0;1;39mCreate Volatile Files and Directories[0m.
Starting [0;1;39mUserspace Out-Of-Memory (OOM) Killer[0m...
Starting [0;1;39mNetwork Name Resolution[0m...
Starting [0;1;39mNetwork Time Synchronization[0m...
Starting [0;1;39mRecord System Boot/Shutdown in UTMP[0m...
[[0;32m OK [0m] Finished [0;1;39mRecord System Boot/Shutdown in UTMP[0m.
[[0;32m OK [0m] Finished [0;1;39mLoad AppArmor profiles[0m.
Starting [0;1;39mRaise network interfaces[0m...
Starting [0;1;39mLoad AppArmor profiles managed internally by snapd[0m...
Mounting [0;1;39mArbitrary Executable File Formats File System[0m...
[[0;32m OK [0m] Started [0;1;39mNetwork Time Synchronization[0m.
[[0;32m OK [0m] Reached target [0;1;39mSystem Time Set[0m.
[[0;32m OK [0m] Started [0;1;39mUserspace Out-Of-Memory (OOM) Killer[0m.
[[0;32m OK [0m] Mounted [0;1;39mArbitrary Executable File Formats File System[0m.
[[0;32m OK [0m] Started [0;1;39mNetwork Name Resolution[0m.
[[0;32m OK [0m] Reached target [0;1;39mHost and Network Name Lookups[0m.
[[0;32m OK [0m] Finished [0;1;39mLoad AppArmor profiles managed internally by snapd[0m.
[[0;32m OK [0m] Reached target [0;1;39mSystem Initialization[0m.
[[0;32m OK [0m] Started [0;1;39mACPI Events Check[0m.
[[0;32m OK [0m] Started [0;1;39mProcess error reports when automatic reporting is enabled (file watch)[0m.
[[0;32m OK [0m] Started [0;1;39mCUPS Scheduler[0m.
[[0;32m OK [0m] Started [0;1;39mTrigger anacron every hour[0m.
[[0;32m OK [0m] Started [0;1;39mProcess error reports when automatic reporting is enabled (timer based)[0m.
[[0;32m OK [0m] Started [0;1;39mDaily apt download activities[0m.
[[0;32m OK [0m] Started [0;1;39mDaily apt upgrade and clean activities[0m.
[[0;32m OK [0m] Started [0;1;39mDaily dpkg database backup timer[0m.
[[0;32m OK [0m] Started [0;1;39mPeriodic ext4 Online Metadata Check for All Filesystems[0m.
[[0;32m OK [0m] Started [0;1;39mDiscard unused blocks once a week[0m.
[[0;32m OK [0m] Started [0;1;39mRefresh fwupd metadata regularly[0m.
[[0;32m OK [0m] Started [0;1;39mDaily rotation of log files[0m.
[[0;32m OK [0m] Started [0;1;39mDaily man-db regeneration[0m.
[[0;32m OK [0m] Started [0;1;39mMessage of the Day[0m.
[[0;32m OK [0m] Started [0;1;39mClean PHP session files every 30 mins[0m.
[[0;32m OK [0m] Started [0;1;39mUpdate the plocate database daily[0m.
[[0;32m OK [0m] Started [0;1;39mDaily Cleanup of Temporary Directories[0m.
[[0;32m OK [0m] Started [0;1;39mUbuntu Advantage Timer for running repeated jobs[0m.
[[0;32m OK [0m] Reached target [0;1;39mPath Units[0m.
[[0;32m OK [0m] Listening on [0;1;39mACPID Listen Socket[0m.
[[0;32m OK [0m] Listening on [0;1;39mAvahi mDNS/DNS-SD Stack Activation Socket[0m.
[[0;32m OK [0m] Listening on [0;1;39mCUPS Scheduler[0m.
[[0;32m OK [0m] Listening on [0;1;39mD-Bus System Message Bus Socket[0m.
Starting [0;1;39mDocker Socket for the API[0m...
Starting [0;1;39mSocket activation for snappy daemon[0m...
[[0;32m OK [0m] Listening on [0;1;39mUUID daemon activation socket[0m.
[[0;32m OK [0m] Finished [0;1;39mRaise network interfaces[0m.
[[0;32m OK [0m] Listening on [0;1;39mDocker Socket for the API[0m.
[[0;32m OK [0m] Listening on [0;1;39mSocket activation for snappy daemon[0m.
[[0;32m OK [0m] Reached target [0;1;39mSocket Units[0m.
[[0;32m OK [0m] Reached target [0;1;39mBasic System[0m.
[[0;32m OK [0m] Started [0;1;39mACPI event daemon[0m.
[[0;32m OK [0m] Started [0;1;39mRun anacron jobs[0m.
Starting [0;1;39mLSB: automatic crash report generation[0m...
Starting [0;1;39mAvahi mDNS/DNS-SD Stack[0m...
[[0;32m OK [0m] Started [0;1;39mD-Bus System Message Bus[0m.
Starting [0;1;39mNetwork Manager[0m...
[[0;32m OK [0m] Started [0;1;39mSave initial kernel messages after boot[0m.
Starting [0;1;39mRemove Stale Online ext4 Metadata Check Snapshots[0m...
[[0;32m OK [0m] Reached target [0;1;39mLogin Prompts[0m.
Starting [0;1;39mDetect the available GPUs and deal with any system changes[0m...
Starting [0;1;39mRecord successful boot for GRUB[0m...
[[0;32m OK [0m] Started [0;1;39mirqbalance daemon[0m.
Starting [0;1;39mLSB: Start lightdm[0m...
Starting [0;1;39mInitialize hardware monitoring sensors[0m...
Starting [0;1;39mDispatcher daemon for systemd-networkd[0m...
Starting [0;1;39mClean php session files[0m...
Starting [0;1;39mAuthorization Manager[0m...
Starting [0;1;39mPower Profiles daemon[0m...
Starting [0;1;39mSystem Logging Service[0m...
Starting [0;1;39mSecure Boot updates for DB and DBX[0m...
[[0;32m OK [0m] Reached target [0;1;39mPreparation for Logins[0m.
Starting [0;1;39mSnap Daemon[0m...
[[0;32m OK [0m] Reached target [0;1;39mUser and Group Name Lookups[0m.
[[0;1;38;5;185mDEPEND[0m] Dependency failed for [0;1;39mSSSD NSS Service responder socket[0m.
[[0;1;38;5;185mDEPEND[0m] Dependency failed for [0;1;39mSSSD AutoFS Service responder socket[0m.
[[0;1;38;5;185mDEPEND[0m] Dependency failed for [0;1;39mSSSD PAC Service responder socket[0m.
[[0;1;38;5;185mDEPEND[0m] Dependency failed for [0;1;39mSSSD PAM Service responder private socket[0m.
[[0;1;38;5;185mDEPEND[0m] Dependency failed for [0;1;39mSSSD PAM Service responder socket[0m.
[[0;1;38;5;185mDEPEND[0m] Dependency failed for [0;1;39mSSSD SSH Service responder socket[0m.
[[0;1;38;5;185mDEPEND[0m] Dependency failed for [0;1;39mSSSD Sudo Service responder socket[0m.
Starting [0;1;39mAccounts Service[0m...
[[0;32m OK [0m] Started [0;1;39mRegular background program processing daemon[0m.
Starting [0;1;39mSwitcheroo Control Proxy service[0m...
Starting [0;1;39mUser Login Management[0m...
Starting [0;1;39mDisk Manager[0m...
Starting [0;1;39mLSB: This services starts and stops the USB Arbitrator.[0m...
Starting [0;1;39mWPA supplicant[0m...
[[0;32m OK [0m] Finished [0;1;39mRemove Stale Online ext4 Metadata Check Snapshots[0m.
[[0;32m OK [0m] Started [0;1;39mLSB: Start lightdm[0m.
[[0;32m OK [0m] Finished [0;1;39mInitialize hardware monitoring sensors[0m.
[[0;32m OK [0m] Started [0;1;39mStart whoopsie on modification of the /var/crash directory[0m.
Starting [0;1;39mProcess error reports when automatic reporting is enabled[0m...
[[0;32m OK [0m] Started [0;1;39mLSB: automatic crash report generation[0m.
[[0;32m OK [0m] Finished [0;1;39mRecord successful boot for GRUB[0m.
Starting [0;1;39mGRUB failed boot detection[0m...
[[0;32m OK [0m] Finished [0;1;39mGRUB failed boot detection[0m.
[[0;32m OK [0m] Started [0;1;39mSystem Logging Service[0m.
[[0;32m OK [0m] Finished [0;1;39mSecure Boot updates for DB and DBX[0m.
但此后，Ubunto标志出现，需要等待大约2分钟。
这是一个关键链
graphical.target @2min 11.767s
└─multi-user.target @2min 11.767s
└─plymouth-quit-wait.service @41.693s +1min 30.072s
└─systemd-user-sessions.service @41.368s +303ms
└─network.target @41.303s
└─NetworkManager.service @33.878s +7.424s
└─dbus.service @33.874s
└─basic.target @33.829s
└─sockets.target @33.829s
└─snapd.socket @33.827s +1ms
└─sysinit.target @33.732s
└─snapd.apparmor.service @31.054s +2.677s
└─apparmor.service @29.008s +2.043s
└─local-fs.target @28.973s
└─run-snapd-ns-snapd\x2ddesktop\x2dintegration.mnt.mount @1min 19.146s
└─run-snapd-ns.mount @1min 16.798s
└─local-fs-pre.target @9.273s
└─systemd-tmpfiles-setup-dev.service @8.197s +1.075s
└─systemd-sysusers.service @7.069s +1.098s
└─systemd-remount-fs.service @6.971s +95ms
└─systemd-journald.socket @6.715s
└─system.slice @6.674s
└─-.slice @6.674s
有人能告诉我哪里出了问题吗？
如果您需要更多日志，请告诉我。
编辑：
这里有一个
$systemd-analyze blame
1min 30.072s plymouth-quit-wait.service
57.318s mysql.service
57.089s docker.service
35.318s php8.1-fpm.service
26.226s snapd.service
25.153s containerd.service
21.484s systemd-journal-flush.service
20.393s networkd-dispatcher.service
15.367s dev-sda2.device
14.404s dev-loop29.device
13.890s dev-loop9.device
13.386s gpu-manager.service
13.006s vmware-USBArbitrator.service
12.960s dev-loop0.device
12.582s udisks2.service
12.475s NetworkManager-wait-online.service
12.235s accounts-daemon.service
12.038s nginx.service
11.858s dev-loop21.device
11.781s dev-loop18.device
11.697s dev-loop32.device
11.480s dev-loop20.device
11.452s dev-loop22.device
11.349s dev-loop26.device
11.287s dev-loop19.device
11.266s dev-loop11.device
11.243s dev-loop25.device
...