我有 Ubuntu 24.04 和本地网络。我尝试在网络设置中配置有线连接，使用手动 IPv4 模式和静态 IP 地址，我应用它并且它工作正常，但过了一会儿它仍然尝试通过 DHCP 获取地址。我重新打开网络对话框，它又回到了自动 (DHCP)，尽管我的静态地址仍然有效。重新启动没有改变任何东西。就好像“应用”没有保存我的设置。
多次尝试通过 DHCP 重新连接后，它放弃并禁用连接，导致静态 IP 无法使用。
我也尝试在 /etc/netplan/ 中创建一个配置文件或者编辑 /etc/netplan/01-network-manager-all.yaml，但无济于事，行为相同。
自从我的戴尔 Latitude 5480 一切都变慢以来已经有几天了。我有 16GB 的 RAM，它的使用率很少超过 40%，但是通常不使用那么多 CPU 的应用程序现在可以达到 100%，尤其是视频。我尝试从 Firefox 切换到 Chromium，我在 Firefox 上禁用了 GPU 加速，但无济于事。在这些情况下，top 会将 Firefox 或 Chromium 显示为罪魁祸首，但在 Firefox 任务控制台中并没有错，在 Firefox 看来，没有哪个选项卡特别占用过多 CPU。我想强调的是，这在几天前根本没有发生。这是@heynnema 在类似情况下要求的一些信息（Ubuntu 20.04 使用后速度变慢）：https ://paste.ubuntu.com/p/qpFg8gkV8f/
$ top
top - 20:54:37 up 3 min, 1 user, load average: 6,82, 3,20, 1,26
Tasks: 254 total, 3 running, 251 sleeping, 0 stopped, 0 zombie
%Cpu(s): 75,5 us, 23,5 sy, 0,0 ni, 1,0 id, 0,0 wa, 0,0 hi, 0,0 si, 0,0 st
MiB Mem : 15871,7 total, 11662,1 free, 2618,7 used, 1590,9 buff/cache
MiB Swap: 30518,0 total, 30518,0 free, 0,0 used. 12718,8 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2153 leandro 20 0 3692108 551256 171408 R 170,0 3,4 2:58.64 firefox
2701 leandro 20 0 2845060 376568 176988 R 75,0 2,3 0:44.78 Web Content
2432 leandro 20 0 26,9g 571352 98404 S 45,0 3,5 1:04.69 WebExtensions
2825 leandro 20 0 218560 58392 42652 S 20,0 0,4 0:01.66 RDD Process
2902 leandro 20 0 21524 4312 3512 R 20,0 0,0 0:00.08 top
2275 leandro 20 0 2711824 302536 103468 S 15,0 1,9 0:45.91 Web Content
1655 leandro 20 0 862908 73856 49624 S 10,0 0,5 0:14.60 Xorg
1856 leandro 20 0 4007508 267416 103672 S 10,0 1,6 0:35.87 gnome-shell
2504 leandro 20 0 2486004 157748 100972 S 10,0 1,0 0:06.86 Web Content
2213 leandro 20 0 2523948 177836 108792 S 5,0 1,1 0:13.12 Web Content
2331 leandro 20 0 835556 62888 40308 S 5,0 0,4 0:04.37 terminator
1 root 20 0 169312 12420 8652 S 0,0 0,1 0:03.93 systemd
2 root 20 0 0 0 0 S 0,0 0,0 0:00.00 kthreadd
3 root 0 -20 0 0 0 I 0,0 0,0 0:00.00 rcu_gp
4 root 0 -20 0 0 0 I 0,0 0,0 0:00.00 rcu_par_gp
5 root 20 0 0 0 0 I 0,0 0,0 0:00.00 kworker/0:0-events
6 root 0 -20 0 0 0 I 0,0 0,0 0:00.00 kworker/0:0H-kblockd
7 root 20 0 0 0 0 I 0,0 0,0 0:00.00 kworker/0:1-events
8 root 20 0 0 0 0 I 0,0 0,0 0:00.14 kworker/u8:0-ext4-rsv-conversion
9 root 0 -20 0 0 0 I 0,0 0,0 0:00.00 mm_percpu_wq
10 root 20 0 0 0 0 S 0,0 0,0 0:00.07 ksoftirqd/0
11 root 20 0 0 0 0 I 0,0 0,0 0:00.65 rcu_sched
12 root rt 0 0 0 0 S 0,0 0,0 0:00.00 migration/0
13 root -51 0 0 0 0 S 0,0 0,0 0:00.00 idle_inject/0
14 root 20 0 0 0 0 S 0,0 0,0 0:00.00 cpuhp/0
15 root 20 0 0 0 0 S 0,0 0,0 0:00.00 cpuhp/1
16 root -51 0 0 0 0 S 0,0 0,0 0:00.00 idle_inject/1
17 root rt 0 0 0 0 S 0,0 0,0 0:00.21 migration/1
18 root 20 0 0 0 0 S 0,0 0,0 0:00.08 ksoftirqd/1
19 root 20 0 0 0 0 I 0,0 0,0 0:00.01 kworker/1:0-events
20 root 0 -20 0 0 0 I 0,0 0,0 0:00.00 kworker/1:0H-kblockd
21 root 20 0 0 0 0 S 0,0 0,0 0:00.00 cpuhp/2
$ free -h
total used free shared buff/cache available
Mem: 15Gi 2,4Gi 11Gi 206Mi 1,5Gi 12Gi
Swap: 29Gi 0B 29Gi
$ sudo turbostat --Summary --show Busy%,Bzy_MHz,IRQ,PkgWatt,PkgTmp,RAMWatt,GFXWatt --interval 15
turbostat version 20.03.20 - Len Brown <[email protected]>
CPUID(0): GenuineIntel 0x16 CPUID levels; 0x80000008 xlevels; family:model:stepping 0x6:8e:9 (6:142:9)
CPUID(1): SSE3 MONITOR SMX EIST TM2 TSC MSR ACPI-TM HT TM
CPUID(6): APERF, TURBO, DTS, PTM, HWP, HWPnotify, HWPwindow, HWPepp, No-HWPpkg, EPB
cpu2: MSR_IA32_MISC_ENABLE: 0x00850089 (TCC EIST MWAIT PREFETCH TURBO)
CPUID(7): SGX
cpu2: MSR_IA32_FEATURE_CONTROL: 0x00000005 (Locked )
CPUID(0x15): eax_crystal: 2 ebx_tsc: 226 ecx_crystal_hz: 0
TSC: 2712 MHz (24000000 Hz * 226 / 2 / 1000000)
CPUID(0x16): base_mhz: 2700 max_mhz: 3500 bus_mhz: 100
cpu2: MSR_MISC_PWR_MGMT: 0x00401cc0 (ENable-EIST_Coordination DISable-EPB DISable-OOB)
RAPL: 17476 sec. Joule Counter Range, at 15 Watts
cpu2: MSR_PLATFORM_INFO: 0x804043df1011b00
4 * 100.0 = 400.0 MHz max efficiency frequency
27 * 100.0 = 2700.0 MHz base frequency
cpu2: MSR_IA32_POWER_CTL: 0x0024005d (C1E auto-promotion: DISabled)
cpu2: MSR_TURBO_RATIO_LIMIT: 0x23232323
35 * 100.0 = 3500.0 MHz max turbo 4 active cores
35 * 100.0 = 3500.0 MHz max turbo 3 active cores
35 * 100.0 = 3500.0 MHz max turbo 2 active cores
35 * 100.0 = 3500.0 MHz max turbo 1 active cores
cpu2: MSR_CONFIG_TDP_NOMINAL: 0x0000001a (base_ratio=26)
cpu2: MSR_CONFIG_TDP_LEVEL_1: 0x0008003c (PKG_MIN_PWR_LVL1=0 PKG_MAX_PWR_LVL1=0 LVL1_RATIO=8 PKG_TDP_LVL1=60)
cpu2: MSR_CONFIG_TDP_LEVEL_2: 0x001b00c8 (PKG_MIN_PWR_LVL2=0 PKG_MAX_PWR_LVL2=0 LVL2_RATIO=27 PKG_TDP_LVL2=200)
cpu2: MSR_CONFIG_TDP_CONTROL: 0x00000000 ( lock=0)
cpu2: MSR_TURBO_ACTIVATION_RATIO: 0x00000017 (MAX_NON_TURBO_RATIO=23 lock=0)
cpu2: MSR_PKG_CST_CONFIG_CONTROL: 0x1e008008 (UNdemote-C3, UNdemote-C1, demote-C3, demote-C1, locked, pkg-cstate-limit=8 (unlimited))
cpu2: cpufreq driver: intel_pstate
cpu2: cpufreq governor: powersave
cpufreq intel_pstate no_turbo: 0
cpu2: MSR_MISC_FEATURE_CONTROL: 0x00000000 (L2-Prefetch L2-Prefetch-pair L1-Prefetch L1-IP-Prefetch)
cpu0: MSR_PM_ENABLE: 0x00000001 (HWP)
cpu0: MSR_HWP_CAPABILITIES: 0x01081a23 (high 35 guar 26 eff 8 low 1)
cpu0: MSR_HWP_REQUEST: 0x80002304 (min 4 max 35 des 0 epp 0x80 window 0x0 pkg 0x0)
cpu0: MSR_HWP_INTERRUPT: 0x00000000 (Dis_Guaranteed_Perf_Change, Dis_Excursion_Min)
cpu0: MSR_HWP_STATUS: 0x00000000 (No-Guaranteed_Perf_Change, No-Excursion_Min)
cpu0: MSR_IA32_ENERGY_PERF_BIAS: 0x00000006 (balanced)
cpu0: MSR_RAPL_POWER_UNIT: 0x000a0e03 (0.125000 Watts, 0.000061 Joules, 0.000977 sec.)
cpu0: MSR_PKG_POWER_INFO: 0x00000078 (15 W TDP, RAPL 0 - 0 W, 0.000000 sec.)
cpu0: MSR_PKG_POWER_LIMIT: 0x4280c800dd8078 (UNlocked)
cpu0: PKG Limit #1: ENabled (15.000000 Watts, 28.000000 sec, clamp ENabled)
cpu0: PKG Limit #2: ENabled (25.000000 Watts, 0.002441* sec, clamp DISabled)
cpu0: MSR_DRAM_POWER_LIMIT: 0x5400de00000000 (UNlocked)
cpu0: DRAM Limit: DISabled (0.000000 Watts, 0.000977 sec, clamp DISabled)
cpu0: MSR_PP0_POLICY: 0
cpu0: MSR_PP0_POWER_LIMIT: 0x00000000 (UNlocked)
cpu0: Cores Limit: DISabled (0.000000 Watts, 0.000977 sec, clamp DISabled)
cpu0: MSR_PP1_POLICY: 0
cpu0: MSR_PP1_POWER_LIMIT: 0x00000000 (UNlocked)
cpu0: GFX Limit: DISabled (0.000000 Watts, 0.000977 sec, clamp DISabled)
cpu0: MSR_IA32_TEMPERATURE_TARGET: 0x02640000 (100 C)
cpu0: MSR_IA32_PACKAGE_THERM_STATUS: 0x883a0008 (42 C)
cpu0: MSR_IA32_PACKAGE_THERM_INTERRUPT: 0x00000003 (100 C, 100 C)
cpu2: MSR_PKGC3_IRTL: 0x0000884e (valid, 79872 ns)
cpu2: MSR_PKGC6_IRTL: 0x00008876 (valid, 120832 ns)
cpu2: MSR_PKGC7_IRTL: 0x00008894 (valid, 151552 ns)
cpu2: MSR_PKGC8_IRTL: 0x000088fa (valid, 256000 ns)
cpu2: MSR_PKGC9_IRTL: 0x0000894c (valid, 339968 ns)
cpu2: MSR_PKGC10_IRTL: 0x00008bf2 (valid, 1034240 ns)
Busy% Bzy_MHz IRQ PkgTmp PkgWatt GFXWatt RAMWatt
81.37 628 120145 42 1.86 0.08 0.53
78.13 615 124712 42 1.77 0.07 0.51
49.01 637 80666 41 1.45 0.04 0.36
$ sudo dmidecode -s bios-version
1.17.1
$ swapon -s
Filename Type Size Used Priority
/dev/sda3 partition 31250428 0 -2
$ grep -i swap /etc/fstab
# swap was on /dev/sda3 during installation
UUID=174e804f-da04-4503-81f9-999b012324a1 none swap sw 0 0
$ sysctl vm.swappiness
vm.swappiness = 60
