Ubuntu 启动需要很长时间，所以我运行了 asystemd-analyze和 a systemd-analyse blame，我真的不明白为什么花了这么长时间。它花了我 3 分 24.135 秒，启动时间最长的是NetworkManager-wait-online.service326 毫秒
输出自systemd-analyse
Startup finished in 4.855s (firmware) + 4.972s (loader) + 13.814s (kernel) + 3min 493ms (userspace) = 3min 24.135s
输出自systemd-analyse
326ms NetworkManager-wait-online.service
325ms dev-sda2.device
268ms gpu-manager.service
218ms apparmor.service
173ms systemd-localed.service
135ms ModemManager.service
135ms accounts-daemon.service
129ms plymouth-quit-wait.service
126ms networking.service
119ms systemd-logind.service
98ms speech-dispatcher.service
94ms systemd-hostnamed.service
93ms rsyslog.service
92ms ondemand.service
91ms thermald.service
90ms pppd-dns.service
90ms grub-common.service
89ms systemd-user-sessions.service
87ms avahi-daemon.service
85ms irqbalance.service
83ms apport.service
78ms NetworkManager.service
75ms bluetooth.service
57ms systemd-udev-trigger.service
47ms virtualbox.service
47ms lightdm.service
42ms systemd-udevd.service
41ms udisks2.service
33ms [email protected]
31ms console-setup.service
29ms systemd-update-utmp.service
28ms wpa_supplicant.service
27ms plymouth-start.service
27ms systemd-timesyncd.service
25ms systemd-journald.service
21ms systemd-modules-load.service
21ms systemd-fsck@dev-disk-by\x2duuid-265A\x2d395B.service
19ms systemd-tmpfiles-setup.service
19ms systemd-update-utmp-runlevel.service
18ms systemd-tmpfiles-clean.service
17ms plymouth-read-write.service
16ms resolvconf.service
16ms dns-clean.service
14ms colord.service
14ms kerneloops.service
13ms ureadahead-stop.service
13ms polkitd.service
13ms boot-efi.mount
12ms systemd-tmpfiles-setup-dev.service
11ms systemd-vconsole-setup.service
10ms kmod-static-nodes.service
10ms upower.service
9ms dev-mqueue.mount
8ms ufw.service
8ms systemd-journal-flush.service
6ms systemd-sysctl.service
6ms alsa-restore.service
系统规格符合要求
BIOS Information
Vendor: American Megatrends Inc.
Version: F.32
Release Date: 03/02/2016
Address: 0xF0000
Runtime Size: 64 kB
ROM Size: 6144 kB
Characteristics:
PCI is supported
BIOS is upgradeable
BIOS shadowing is allowed
Boot from CD is supported
Selectable boot is supported
EDD is supported
5.25"/1.2 MB floppy services are supported (int 13h)
3.5"/720 kB floppy services are supported (int 13h)
3.5"/2.88 MB floppy services are supported (int 13h)
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
ACPI is supported
USB legacy is supported
Smart battery is supported
BIOS boot specification is supported
Function key-initiated network boot is supported
Targeted content distribution is supported
UEFI is supported
BIOS Revision: 15.50
Firmware Revision: 33.86
Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: HP
Product Name: HP Spectre x360 Convertible
Version:
Serial Number: 5CD5495XVF
UUID: 35444335-3934-5835-5646-465839344435
Wake-up Type: Power Switch
SKU Number: P1Q59EA#UUW
Family: 103C_5335KV G=N L=CON B=HP S=SPT
Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
Manufacturer: HP
Product Name: 804F
Version: 33.56
Serial Number: PFLJK018J9S0CC
Asset Tag: Base Board Asset Tag
Features:
Board is a hosting board
Board is replaceable
Location In Chassis: Base Board Chassis Location
Chassis Handle: 0x0003
Type: Motherboard
Contained Object Handles: 0
Handle 0x0003, DMI type 3, 25 bytes
Chassis Information
Manufacturer: HP
Type: Notebook
Lock: Not Present
Version: Chassis Version
Serial Number: Chassis Serial Number
Asset Tag: Not Specified
Boot-up State: Safe
Power Supply State: Safe
Thermal State: Safe
Security Status: None
OEM Information: 0x00000000
Height: Unspecified
Number Of Power Cords: 1
Contained Elements: 1
<OUT OF SPEC> (0)
SKU Number: Not Specified
Handle 0x0004, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J1A1
Internal Connector Type: None
External Reference Designator: PS2Mouse
External Connector Type: PS/2
Port Type: Mouse Port
Handle 0x0005, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J1A1
Internal Connector Type: None
External Reference Designator: Keyboard
External Connector Type: PS/2
Port Type: Keyboard Port
Handle 0x0006, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J2A1
Internal Connector Type: None
External Reference Designator: TV Out
External Connector Type: Mini Centronics Type-14
Port Type: Other
Handle 0x0007, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J2A2A
Internal Connector Type: None
External Reference Designator: COM A
External Connector Type: DB-9 male
Port Type: Serial Port 16550A Compatible
Handle 0x0008, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J2A2B
Internal Connector Type: None
External Reference Designator: Video
External Connector Type: DB-15 female
Port Type: Video Port
Handle 0x0009, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J3A1
Internal Connector Type: None
External Reference Designator: USB1
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000A, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J3A1
Internal Connector Type: None
External Reference Designator: USB2
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000B, DMI type 9, 17 bytes
System Slot Information
Designation: J6B2
Type: x16 PCI Express
Current Usage: In Use
Length: Long
ID: 0
Characteristics:
3.3 V is provided
Opening is shared
PME signal is supported
Bus Address: 0000:00:01.0
Handle 0x000C, DMI type 11, 5 bytes
OEM Strings
String 1: $HP$
String 2: ABS 70/71 79 7A 7B 7C
String 3: FBYTE#6b7N7R7W8AaBaHapaqasauawbVbhbnbzdUdXdpdq.NQ;BUILDID#15WW3K
String 4: PT604#SUUW#DUUW;
String 5:
String 6:
String 7:
String 8:
String 9:
String 10:
String 11:
String 12:
String 13:
Handle 0x000D, DMI type 22, 26 bytes
Portable Battery
Location: Primary
Manufacturer: 3332C
Name: PK03056XL
Design Capacity: 56540 mWh
Design Voltage: 11400 mV
SBDS Version: 1.1
Maximum Error: Unknown
SBDS Serial Number: 1B29
SBDS Manufacture Date: 2015-10-09
SBDS Chemistry: LION
OEM-specific Information: 0x000A070C
Handle 0x000E, DMI type 32, 20 bytes
System Boot Information
Status: No errors detected
Handle 0x000F, DMI type 41, 11 bytes
Onboard Device
Reference Designation: Onboard IGD
Type: Video
Status: Enabled
Type Instance: 1
Bus Address: 0000:00:02.0
Handle 0x0010, DMI type 7, 19 bytes
Cache Information
Socket Designation: L1 Cache
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 64 kB
Maximum Size: 64 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Parity
System Type: Data
Associativity: 8-way Set-associative
Handle 0x0011, DMI type 7, 19 bytes
Cache Information
Socket Designation: L1 Cache
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 64 kB
Maximum Size: 64 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Parity
System Type: Instruction
Associativity: 8-way Set-associative
Handle 0x0012, DMI type 7, 19 bytes
Cache Information
Socket Designation: L2 Cache
Configuration: Enabled, Not Socketed, Level 2
Operational Mode: Write Back
Location: Internal
Installed Size: 512 kB
Maximum Size: 512 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Unified
Associativity: 4-way Set-associative
Handle 0x0013, DMI type 7, 19 bytes
Cache Information
Socket Designation: L3 Cache
Configuration: Enabled, Not Socketed, Level 3
Operational Mode: Write Back
Location: Internal
Installed Size: 3072 kB
Maximum Size: 3072 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Multi-bit ECC
System Type: Unified
Associativity: 12-way Set-associative
Handle 0x0014, DMI type 4, 48 bytes
Processor Information
Socket Designation: U3E1
Type: Central Processor
Family: Core i5
Manufacturer: Intel(R) Corporation
ID: E3 06 04 00 FF FB EB BF
Signature: Type 0, Family 6, Model 78, Stepping 3
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz
Voltage: 0.9 V
External Clock: 100 MHz
Max Speed: 2800 MHz
Current Speed: 2800 MHz
Status: Populated, Enabled
Upgrade: Other
L1 Cache Handle: 0x0011
L2 Cache Handle: 0x0012
L3 Cache Handle: 0x0013
Serial Number: To Be Filled By O.E.M.
Asset Tag: To Be Filled By O.E.M.
Part Number: To Be Filled By O.E.M.
Core Count: 2
Core Enabled: 2
Thread Count: 4
Characteristics:
64-bit capable
Multi-Core
Hardware Thread
Execute Protection
Enhanced Virtualization
Power/Performance Control
Handle 0x0015, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 16 GB
Error Information Handle: Not Provided
Number Of Devices: 2
Handle 0x0016, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0015
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: Row Of Chips
Set: None
Locator: Bottom - on board
Bank Locator: BANK 0
Type: <OUT OF SPEC>
Type Detail: Synchronous
Speed: 1600 MHz
Manufacturer: Elpida
Serial Number: Not Available
Asset Tag: 0
Part Number: EDFB164A1MA-JD-F
Rank: 2
Configured Clock Speed: 1600 MHz
Minimum voltage: Unknown
Maximum voltage: Unknown
Configured voltage: 1.200 V
Handle 0x0017, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0015
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: Row Of Chips
Set: None
Locator: Bottom - on board
Bank Locator: BANK 2
Type: <OUT OF SPEC>
Type Detail: Synchronous
Speed: 1600 MHz
Manufacturer: Elpida
Serial Number: Not Available
Asset Tag: 0
Part Number: EDFB164A1MA-JD-F
Rank: 2
Configured Clock Speed: 1600 MHz
Minimum voltage: Unknown
Maximum voltage: Unknown
Configured voltage: 1.200 V
Handle 0x0018, DMI type 19, 31 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x001FFFFFFFF
Range Size: 8 GB
Physical Array Handle: 0x0015
Partition Width: 2
Handle 0x0019, DMI type 221, 12 bytes
OEM-specific Type
Header and Data:
DD 0C 19 00 01 01 00 01 07 00 00 00
Strings:
Reference Code - ACPI
Handle 0x001A, DMI type 20, 35 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x000FFFFFFFF
Range Size: 4 GB
Physical Device Handle: 0x0016
Memory Array Mapped Address Handle: 0x0018
Partition Row Position: 1
Handle 0x001B, DMI type 20, 35 bytes
Memory Device Mapped Address
Starting Address: 0x00100000000
Ending Address: 0x001FFFFFFFF
Range Size: 4 GB
Physical Device Handle: 0x0017
Memory Array Mapped Address Handle: 0x0018
Partition Row Position: 1
Handle 0x001C, DMI type 130, 20 bytes
OEM-specific Type
Header and Data:
82 14 1C 00 24 41 4D 54 00 00 00 00 00 A5 BF 02
C0 00 00 00
Handle 0x001D, DMI type 131, 64 bytes
OEM-specific Type
Header and Data:
83 40 1D 00 10 00 00 00 0A 00 00 00 00 00 01 00
F8 00 48 9D 00 00 00 00 01 00 00 00 00 00 0B 00
8E 04 00 00 00 00 00 00 FE 00 FF FF 00 00 00 00
00 00 00 00 22 00 00 00 76 50 72 6F 00 00 00 00
Handle 0x001E, DMI type 221, 26 bytes
OEM-specific Type
Header and Data:
DD 1A 1E 00 03 01 00 01 07 00 00 00 02 00 00 00
00 7C 00 03 00 00 05 00 00 00
Strings:
Reference Code - CPU
uCode Version
TXT ACM version
Handle 0x001F, DMI type 221, 26 bytes
OEM-specific Type
Header and Data:
DD 1A 1F 00 03 01 00 01 07 00 00 00 02 00 0A 00
00 01 00 03 04 0B 00 00 8E 04
Strings:
Reference Code - ME 11.0
MEBx version
ME Firmware Version
Consumer SKU
Handle 0x0020, DMI type 221, 68 bytes
OEM-specific Type
Header and Data:
DD 44 20 00 09 01 00 01 07 00 00 00 02 03 FF FF
FF FF FF 04 00 FF FF FF 21 00 05 00 FF FF FF 21
00 06 00 FF FF FF FF FF 07 00 3E 00 00 00 00 08
00 34 00 00 00 00 09 00 3E 00 00 00 00 0A 00 34
00 00 00 00
Strings:
Reference Code - SKL PCH
PCH-CRID Status
Disabled
PCH-CRID Original Value
PCH-CRID New Value
OPROM - RST - RAID
SKL PCH H Bx Hsio Version
SKL PCH H Dx Hsio Version
SKL PCH LP Bx Hsio Version
SKL PCH LP Cx Hsio Version
Handle 0x0021, DMI type 221, 54 bytes
OEM-specific Type
Header and Data:
DD 36 21 00 07 01 00 01 07 00 00 00 02 00 01 07
00 00 00 03 00 01 07 00 00 00 04 05 FF FF FF FF
FF 06 00 FF FF FF 08 00 07 00 FF FF FF 08 00 08
00 FF FF FF 05 00
Strings:
Reference Code - SA - System Agent
Reference Code - MRC
SA - PCIe Version
SA-CRID Status
Disabled
SA-CRID Original Value
SA-CRID New Value
OPROM - VBIOS
Handle 0x0022, DMI type 41, 11 bytes
Onboard Device
Reference Designation: Intel Stone Peak 2 7265 Combo /NON-vPro NGFF Combo Wireless-AC 7265
Type: Other
Status: Enabled
Type Instance: 1
Bus Address: 0000:02:00.0
Handle 0x0023, DMI type 41, 11 bytes
Onboard Device
Reference Designation: Realtek PCIE CardReader
Type: Other
Status: Enabled
Type Instance: 1
Bus Address: 0000:01:00.0
Handle 0x0024, DMI type 221, 96 bytes
OEM-specific Type
Header and Data:
DD 60 24 00 0D 01 00 00 00 00 FF 00 02 00 FF FF
FF FF FF 03 04 FF FF FF FF FF 05 06 FF FF FF FF
FF 07 08 FF FF FF FF FF 09 00 00 00 00 00 00 0A
00 FF FF FF FF FF 0B 00 21 56 00 00 00 0C 00 FF
FF FF FF FF 0D 00 02 00 00 00 00 0E 00 FF FF FF
FF FF 0F 00 FF FF FF FF FF 10 11 01 02 02 03 00
Strings:
Lan Phy Version
Sensor Firmware Version
Debug Mode Status
Enabled
Performance Mode Status
Disabled
Debug Use USB(Disabled:Serial)
Disabled
ICC Overclocking Version
UNDI Version
EC FW Version
GOP Version
BIOS Guard Version
Base EC FW Version
EC-EC Protocol Version
Royal Park Version
BP1.2.2.0_RP03
Handle 0x0025, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: Ctrl0Port1
Internal Connector Type: SAS/SATA Plug Receptacle
External Reference Designator: Primary HDD Bay
External Connector Type: SAS/SATA Plug Receptacle
Port Type: SATA
Handle 0x0026, DMI type 136, 6 bytes
OEM-specific Type
Header and Data:
88 06 26 00 00 00
Handle 0x0027, DMI type 14, 23 bytes
Group Associations
Name: Firmware Version Info
Items: 6
0x0019 (<OUT OF SPEC>)
0x001E (<OUT OF SPEC>)
0x001F (<OUT OF SPEC>)
0x0020 (<OUT OF SPEC>)
0x0021 (<OUT OF SPEC>)
0x0024 (<OUT OF SPEC>)
Handle 0x0028, DMI type 14, 8 bytes
Group Associations
Name: $MEI
Items: 1
0x0000 (<OUT OF SPEC>)
Handle 0x0029, DMI type 219, 81 bytes
OEM-specific Type
Header and Data:
DB 51 29 00 01 03 01 45 02 00 90 06 03 10 86 00
00 00 00 00 40 08 00 00 00 00 00 00 00 00 40 02
FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
FF FF FF FF FF FF FF FF 03 00 00 00 80 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00
Strings:
MEI1
MEI2
MEI3
Handle 0x002A, DMI type 13, 22 bytes
BIOS Language Information
Language Description Format: Long
Installable Languages: 5
en|US|iso8859-1
fr|FR|iso8859-1
es|ES|iso8859-1
zh|TW|unicode
zh|CN|unicode
Currently Installed Language: en|US|iso8859-1
Handle 0x002B, DMI type 127, 4 bytes
End Of Table