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Martin Hope
NicoCaldo
Asked: 2024-03-25 21:28:23 +0800 CST
  • 7

我注意到，自从 Ubuntu 内核上次更新以来，操作系统时钟随机跳秒。我注意到，在运行一个简单的 Python 应用程序后，该应用程序显示语句上的时间戳print不按时间顺序排列。下面是print我的 Django 应用程序的控制台和时间戳的示例：

[2023-08-28 17:11:00,078: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:01,190: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:02,378: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:03,462: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:04,630: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:05,758: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:07,122: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:08,350: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:09,606: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:10,966: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:10:55,717: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:10:56,938: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:10:58,294: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:10:59,514: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:00,842: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:02,494: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:04,098: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:05,798: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:09,506: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:10,542: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:11,666: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:12,803: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:14,043: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:15,147: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:16,251: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:17,351: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:18,383: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:19,427: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:20,495: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:21,579: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:22,691: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:23,847: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:24,987: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:26,151: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:11,857: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:12,969: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:14,117: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:15,197: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:16,281: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:17,489: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:18,650: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:19,774: WARNING/ForkPoolWorker-1] Contato un secondo
[2023-08-28 17:11:20,850: WARNING/ForkPoolWorker-1] Contato un secondo

打开“时钟”应用程序还会显示秒数运行，有时更快，有时更慢，有时从某个数字跳到另一个数字。

我的 Ubuntu 服务器用于timedatectl同步时间。以下是服务器的详细信息：

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 22.04.4 LTS
Release:        22.04
Codename:       jammy
Linux lab01 6.5.0-26-generic #26~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Mar 12 10:22:43 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

我不明白为什么，但时钟跳了很多。就好像它计数得超级快，它发现时间不对，然后跳回来。例如，这是两个date命令之间有 1 的命令：

lab@lab01:~$ date
Mon Mar 25 02:25:24 PM CET 2024
lab@lab01:~$ date
Mon Mar 25 02:25:03 PM CET 2024

sudo timedatectl timesync-status显示高抖动和偏移值（数十秒），但我不明白为什么：

    Server: 162.159.200.1 (0.pool.ntp.org)
Poll interval: 32s (min: 32s; max 34min 8s)
         Leap: normal
      Version: 4
      Stratum: 3
    Reference: A0E080C
    Precision: 1us (-25)
Root distance: 9.864ms (max: 5s)
       Offset: -22.284696s
        Delay: 3.924ms
       Jitter: 10.223410s
 Packet count: 53
    Frequency: +0.000ppm

我还注意到存在一些问题clocksource：

$ sudo dmesg | grep clocksource
[    0.026856] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns
[    0.100958] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x2c9485be866, max_idle_ns: 440795258057 ns
[    0.106744] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[    0.146577] clocksource: Switched to clocksource tsc-early
[    1.765438] clocksource: timekeeping watchdog on CPU1: Marking clocksource 'tsc-early' as unstable because the skew is too large:
[    1.765440] clocksource:                       'refined-jiffies' wd_nsec: 512032000 wd_now: fffedc08 wd_last: fffedb88 mask: ffffffff
[    1.765442] clocksource:                       'tsc-early' cs_nsec: 852454992 cs_now: 9bda08539 cs_last: 9207bcdc0 mask: ffffffffffffffff
[    1.765443] clocksource:                       Clocksource 'tsc-early' skewed 340422992 ns (340 ms) over watchdog 'refined-jiffies' interval of 512032000 ns (512 ms)
[    1.765445] clocksource:                       'tsc-early' is current clocksource.
[    1.765448] tsc: Marking TSC unstable due to clocksource watchdog
[    1.985248] clocksource: Switched to clocksource refined-jiffies

我曾尝试过chrony工作，但没有成功。目前我的chrony.conf是：

pool 0.pool.ntp.org burst
sourcedir /run/chrony-dhcp
sourcedir /etc/chrony/sources.d
keyfile /etc/chrony/chrony.keys
driftfile /var/lib/chrony/chrony.drift
ntsdumpdir /var/lib/chrony
logdir /var/log/chrony
maxupdateskew 100.0
rtcsync
makestep 1 -1
maxdistance 12000

我已经添加了maxdistance尝试解决该问题的内容。

该命令 sudo chronyc sources -v显示以下内容：

MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
^? ns2.fibertelecom.it           2   6     3    59  -278.5s[-278.5s] +/-   53ms
^? ns3.fibertelecom.it           3   6     3    59  -277.7s[-277.7s] +/-   38ms
^? ns1.fibertelecom.it           2   6     3    60  -276.1s[-276.1s] +/-   35ms
^? nettuno.ntp.irh.it            2   6     3    60  -276.9s[-276.9s] +/-   11ms

和chronyc tracking：

Reference ID    : 00000000 ()
Stratum         : 0
Ref time (UTC)  : Thu Jan 01 00:00:00 1970
System time     : 0.000000001 seconds fast of NTP time
Last offset     : +0.000000000 seconds
RMS offset      : 0.000000000 seconds
Frequency       : 86.704 ppm fast
Residual freq   : +0.000 ppm
Skew            : 0.000 ppm
Root delay      : 1.000000000 seconds
Root dispersion : 1.000000000 seconds
Update interval : 0.0 seconds
Leap status     : Not synchronised

有什么建议么？

time
Martin Hope
NicoCaldo
Asked: 2023-06-28 19:29:23 +0800 CST
  • 5

我使用的是 Ubuntu 22.04.2 LTS，没有 GUI 环境。操作系统刚刚安装，未对可从网站下载的标准版本进行任何修改。

我最近安装了 lxde 和 classic，sudo apt-get install lxde因为我想将它与 xrdp 一起使用进行远程访问（通过安装sudo apt-get install xrdp）

我已使用以下代码将 xrdp 设置为在使用 xorg 登录时使用 lxde

sudo apt install -y xrdp openbox-lxde-session
sudo sed -e 's/^new_cursors=true/new_cursors=false/g' \
     -i /etc/xrdp/xrdp.ini
sudo systemctl enable xrdp
sudo systemctl restart xrdp

echo "startlxde" > ~/.xsession

现在，如果我连接 montiro、鼠标和键盘并打开 PC，则会显示经典的 gnome 登录页面（参见屏幕截图），但它会立即冻结（鼠标指针不显示，光标停止闪烁，没有任何作用） 。如果我连接使用 lxde 的远程监视器，一切都会完美运行

在此输入图像描述

如何使标准 lxde 登录页面和环境在启动时使用？

gnome
Martin Hope
NicoCaldo
Asked: 2021-03-06 07:03:52 +0800 CST
  • 0

我正在使用 Ubuntu Server 20.04.2，它在我的家庭网络中功能齐全。该服务器是 VMware Workstation Pro 中的一个虚拟机，我可以使用其 IP 地址 192.168.42.135 通过 SSH 访问它

现在，虚拟机通过 VMware NAT 连接到互联网，显然，无法通过 SSH 在我的网络之外访问它。

我想知道是否有办法通过 SSH 使用公共 IP 连接到它，以及如何将它分配给我的服务器

networking
Martin Hope
NicoCaldo
Asked: 2021-03-05 23:42:34 +0800 CST
  • 0

我将 VMware 与 Ubuntu Server 20.04.2 LTS VM 一起使用。

我有两个网络接口连接到虚拟机；第一个 ens33 连接到 NAT 并提供到服务器的 Internet 连接。第二个，ens34，是一个网络接口，应该用于将其他机器连接到服务器。

现在，我正在尝试为接口设置静态 IP。我已经编辑sudo nano /etc/network/interfaces并添加了

auto ens33
allow-hotplug ens33

iface ens33 inet static
address 192.168.42.140
netmask 255.255.255.0
gateway 192.168.42.1

auto ens34
allow-hotplug ens34

iface ens34 inet static
address 192.168.241.140
netmask 25.255.255.0

问题是，在重新启动服务器时，它会应用随机 IP 地址，而不是我在文件中选择的那个。

如果我运行命令sudo ifdown --force ens33关闭接口，我会收到消息

RTNETLINK answers: No such process
RTNETLINK answers: Cannot assign requested address

但是当我运行时sudo ifup ens33我没有错误，并且ifconfig我可以看到我的网卡 ens33 具有我在开始时分配的正确 IP

我错过了什么？

PS为接口分配静态IP的目标是我想将另一个VM连接到我的服务器并与连接的VM/s共享服务器的互联网连接

networking
Martin Hope
NicoCaldo
Asked: 2020-04-21 08:01:26 +0800 CST
  • 0

我的问题是，我的箭头键和 canc 按钮在 Ubuntu 上不再起作用

如果我使用终端箭头键，而不是左右移动或让我使用以前的命令，它们会打印 A 或 B 或 C 或 D。canc 打印 2~

我还使用 Sublime 文本，并且箭头实际上不是移动光标，而是突出显示文本。canc 删除一整行。

我试过安装vim没有运气

我想我错误地按下了一个错误的组合键，但我不知道如何恢复它。

keyboard vim shortcut-keys