单CPU始终处于100％滞后状态| Ubuntu 18.04.4

Laaag 发表于 Dev

拉阿格

我买了一台新的笔记本电脑，该笔记本电脑运行了大约一两个星期。我无法确切地回忆起某个触发器，但现在遇到的问题是，一个CPU内核几乎总是在接近100％的速度运行，并且计算机处于滞后状态。

我从一开始就使用双重引导，但是Windows 10运行良好。

眼镜：

Ubuntu 18.04.4 LTS

英特尔®酷睿TM i7-8565U

GeForce GTX 1050 Ti Mobile

16GB内存

我看了其他一些帖子，但是到目前为止，建议的修复对我而言不起作用。我确保计算机使用NVidia图形卡，并据我所知安装了最新的驱动程序。我也尝试过切换到Kubuntu Desktop，但问题仍然存在。

我的主要问题是，我找不到导致永久使用CPU的进程。我重新启动计算机，使其闲置了几分钟，偶尔CPU使用率下降了，但通常还是很高。（见附图2）

当我运行任何其他程序时，滞后也会变得更糟，播放youtube视频会使鼠标本身滞后严重，并且CPU几乎始终以100％的速度运行（参见图片）

我很感谢您的帮助，并很乐意提供所需命令的任何数据/输出，因为我想解决此问题。

非常感谢你

编辑：的输出

ps aux --sort=-pcpu | head

是

USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root      1602 15.0  0.7 576228 129056 tty2    Sl+  10:24   6:20 /usr/lib/xorg/Xorg vt2 -displayfd 3 -auth /run/user/1000/gdm/Xauthority -background none -noreset -keeptty -verbose 3
lars      5880 13.5  2.2 3817104 365864 tty2   Sl+  10:46   2:47 /usr/lib/firefox/firefox -new-window
lars      1780 12.4  2.9 4400160 486128 tty2   Rl+  10:24   5:13 /usr/bin/gnome-shell
lars      6139 10.0  1.2 2760008 209576 tty2   Sl+  10:47   2:00 /usr/lib/firefox/firefox -contentproc -childID 4 -isForBrowser -prefsLen 7500 -prefMapSize 217531 -parentBuildID 20200403170909 -appdir /usr/lib/firefox/browser 5880 true tab
lars      2159  5.4  0.2 656356 47904 tty2     Sl+  10:24   2:16 gnome-system-monitor
lars      6776  4.7  1.0 2663220 170720 tty2   Sl+  11:02   0:13 /usr/lib/firefox/firefox -contentproc -childID 13 -isForBrowser -prefsLen 7823 -prefMapSize 217531 -parentBuildID 20200403170909 -appdir /usr/lib/firefox/browser 5880 true tab
root      1386  2.2  0.0      0     0 ?        S    10:24   0:56 [irq/152-nvidia]
lars      6730  1.2  1.2 2710580 202384 tty2   Sl+  11:01   0:04 /usr/lib/firefox/firefox -contentproc -childID 12 -isForBrowser -prefsLen 7752 -prefMapSize 217531 -parentBuildID 20200403170909 -appdir /usr/lib/firefox/browser 5880 true tab
lars      6003  1.0  1.1 34232032 191064 tty2  Sl+  10:46   0:13 /usr/lib/firefox/firefox -contentproc -childID 2 -isForBrowser -prefsLen 6684 -prefMapSize 217531 -parentBuildID 20200403170909 -appdir /usr/lib/firefox/browser 5880 true tab

我尝试拔出所有USB设备，但没有任何改变

编辑2：

全新安装后的htop图片：

EDIT3：输出 pstree -l

systemd─┬─ModemManager───2*[{ModemManager}]
        ├─NetworkManager─┬─dhclient
        │                └─2*[{NetworkManager}]
        ├─accounts-daemon───2*[{accounts-daemon}]
        ├─acpid
        ├─anacron
        ├─avahi-daemon───avahi-daemon
        ├─bluetoothd
        ├─boltd───2*[{boltd}]
        ├─colord───2*[{colord}]
        ├─cron
        ├─cups-browsed───2*[{cups-browsed}]
        ├─cupsd
        ├─dbus-daemon
        ├─deja-dup-monito───3*[{deja-dup-monito}]
        ├─gdm3─┬─gdm-session-wor─┬─gdm-wayland-ses─┬─gnome-session-b─┬─gnome-shell─┬─Xwayland───9*[{Xwayland}]
        │      │                 │                 │                 │             ├─ibus-daemon─┬─ibus-dconf───3*[{ibus-dconf}]
        │      │                 │                 │                 │             │             ├─ibus-engine-sim───2*[{ibus-engine-sim}]
        │      │                 │                 │                 │             │             └─2*[{ibus-daemon}]
        │      │                 │                 │                 │             └─26*[{gnome-shell}]
        │      │                 │                 │                 ├─gsd-a11y-settin───3*[{gsd-a11y-settin}]
        │      │                 │                 │                 ├─gsd-clipboard───3*[{gsd-clipboard}]
        │      │                 │                 │                 ├─gsd-color───4*[{gsd-color}]
        │      │                 │                 │                 ├─gsd-datetime───2*[{gsd-datetime}]
        │      │                 │                 │                 ├─gsd-housekeepin───2*[{gsd-housekeepin}]
        │      │                 │                 │                 ├─gsd-keyboard───4*[{gsd-keyboard}]
        │      │                 │                 │                 ├─gsd-media-keys───4*[{gsd-media-keys}]
        │      │                 │                 │                 ├─gsd-mouse───2*[{gsd-mouse}]
        │      │                 │                 │                 ├─gsd-power───4*[{gsd-power}]
        │      │                 │                 │                 ├─gsd-print-notif───2*[{gsd-print-notif}]
        │      │                 │                 │                 ├─gsd-rfkill───2*[{gsd-rfkill}]
        │      │                 │                 │                 ├─gsd-screensaver───2*[{gsd-screensaver}]
        │      │                 │                 │                 ├─gsd-sharing───3*[{gsd-sharing}]
        │      │                 │                 │                 ├─gsd-smartcard───4*[{gsd-smartcard}]
        │      │                 │                 │                 ├─gsd-sound───3*[{gsd-sound}]
        │      │                 │                 │                 ├─gsd-wacom───3*[{gsd-wacom}]
        │      │                 │                 │                 ├─gsd-xsettings───4*[{gsd-xsettings}]
        │      │                 │                 │                 └─3*[{gnome-session-b}]
        │      │                 │                 └─2*[{gdm-wayland-ses}]
        │      │                 └─2*[{gdm-session-wor}]
        │      ├─gdm-session-wor─┬─gdm-x-session─┬─Xorg───2*[{Xorg}]
        │      │                 │               ├─lxsession─┬─lxpanel─┬─firefox─┬─RDD Process───3*[{RDD Process}]
        │      │                 │               │           │         │         ├─2*[Web Content───33*[{Web Content}]]
        │      │                 │               │           │         │         ├─Web Content───35*[{Web Content}]
        │      │                 │               │           │         │         ├─4*[Web Content───34*[{Web Content}]]
        │      │                 │               │           │         │         ├─Web Content───47*[{Web Content}]
        │      │                 │               │           │         │         ├─WebExtensions───29*[{WebExtensions}]
        │      │                 │               │           │         │         └─85*[{firefox}]
        │      │                 │               │           │         └─4*[{lxpanel}]
        │      │                 │               │           ├─lxpolkit───2*[{lxpolkit}]
        │      │                 │               │           ├─openbox───2*[{openbox}]
        │      │                 │               │           ├─pcmanfm───2*[{pcmanfm}]
        │      │                 │               │           ├─ssh-agent
        │      │                 │               │           └─2*[{lxsession}]
        │      │                 │               └─2*[{gdm-x-session}]
        │      │                 └─2*[{gdm-session-wor}]
        │      └─2*[{gdm3}]
        ├─ibus-x11───3*[{ibus-x11}]
        ├─irqbalance───{irqbalance}
        ├─2*[kerneloops]
        ├─menu-cached───2*[{menu-cached}]
        ├─networkd-dispat───{networkd-dispat}
        ├─nm-applet───3*[{nm-applet}]
        ├─nvidia-persiste
        ├─packagekitd───2*[{packagekitd}]
        ├─polkitd───2*[{polkitd}]
        ├─pulseaudio───2*[{pulseaudio}]
        ├─rsyslogd───3*[{rsyslogd}]
        ├─rtkit-daemon───2*[{rtkit-daemon}]
        ├─snapd───17*[{snapd}]
        ├─ssh-agent
        ├─systemd─┬─(sd-pam)
        │         ├─at-spi-bus-laun─┬─dbus-daemon
        │         │                 └─3*[{at-spi-bus-laun}]
        │         ├─at-spi2-registr───2*[{at-spi2-registr}]
        │         ├─dbus-daemon
        │         ├─ibus-portal───2*[{ibus-portal}]
        │         ├─pulseaudio───2*[{pulseaudio}]
        │         └─xdg-permission-───2*[{xdg-permission-}]
        ├─systemd─┬─(sd-pam)
        │         ├─at-spi-bus-laun─┬─dbus-daemon
        │         │                 └─3*[{at-spi-bus-laun}]
        │         ├─at-spi2-registr───2*[{at-spi2-registr}]
        │         ├─dbus-daemon
        │         ├─dconf-service───2*[{dconf-service}]
        │         ├─gnome-screensav───3*[{gnome-screensav}]
        │         ├─gnome-terminal-─┬─bash───htop
        │         │                 ├─bash───pstree
        │         │                 └─4*[{gnome-terminal-}]
        │         ├─goa-daemon───3*[{goa-daemon}]
        │         ├─goa-identity-se───3*[{goa-identity-se}]
        │         ├─gvfs-afc-volume───3*[{gvfs-afc-volume}]
        │         ├─gvfs-goa-volume───2*[{gvfs-goa-volume}]
        │         ├─gvfs-gphoto2-vo───2*[{gvfs-gphoto2-vo}]
        │         ├─gvfs-mtp-volume───2*[{gvfs-mtp-volume}]
        │         ├─gvfs-udisks2-vo───2*[{gvfs-udisks2-vo}]
        │         ├─gvfsd─┬─gvfsd-trash───2*[{gvfsd-trash}]
        │         │       └─2*[{gvfsd}]
        │         ├─gvfsd-fuse───5*[{gvfsd-fuse}]
        │         ├─indicator-appli───2*[{indicator-appli}]
        │         ├─indicator-sound───3*[{indicator-sound}]
        │         ├─xdg-desktop-por───4*[{xdg-desktop-por}]
        │         ├─xdg-desktop-por───2*[{xdg-desktop-por}]
        │         ├─xdg-document-po───5*[{xdg-document-po}]
        │         ├─xdg-permission-───2*[{xdg-permission-}]
        │         ├─xfce4-notifyd───2*[{xfce4-notifyd}]
        │         └─xfconfd
        ├─systemd-journal
        ├─systemd-logind
        ├─systemd-resolve
        ├─systemd-timesyn───{systemd-timesyn}
        ├─systemd-udevd
        ├─thermald───{thermald}
        ├─udisksd───4*[{udisksd}]
        ├─unattended-upgr───{unattended-upgr}
        ├─update-notifier───3*[{update-notifier}]
        ├─upowerd───2*[{upowerd}]
        ├─whoopsie───2*[{whoopsie}]
        ├─wpa_supplicant
        └─xfce4-power-man───2*[{xfce4-power-man}]

编辑：在Wayland上与Ubuntu一起使用

输出 journalctl -f

-- Logs begin at Thu 2020-04-16 14:32:57 CEST. --
Apr 16 18:03:57 yoshua systemd[1]: Starting Hostname Service...
Apr 16 18:03:57 yoshua dbus-daemon[885]: [system] Successfully activated service 'org.freedesktop.hostname1'
Apr 16 18:03:57 yoshua systemd[1]: Started Hostname Service.
Apr 16 18:03:57 yoshua nautilus[2465]: Called "net usershare info" but it failed: Failed to execute child process “net” (No such file or directory)
Apr 16 18:04:06 yoshua eog[2493]: Failed to open file '/home/lars/.cache/thumbnails/normal/bd89ad6e4e39e613a580a0a13dc30c75.png': No such file or directory
Apr 16 18:04:16 yoshua org.gnome.Shell.desktop[1512]: libinput error: client bug: timer event11 debounce: offset negative (-234ms)
Apr 16 18:04:16 yoshua org.gnome.Shell.desktop[1512]: libinput error: client bug: timer event11 debounce: offset negative (-170ms)
Apr 16 18:04:16 yoshua org.gnome.Shell.desktop[1512]: libinput error: client bug: timer event11 debounce short: offset negative (-183ms)
Apr 16 18:04:20 yoshua org.gnome.Shell.desktop[1512]: libinput error: client bug: timer event11 debounce: offset negative (-1ms)
Apr 16 18:04:20 yoshua org.gnome.Shell.desktop[1512]: libinput error: client bug: timer event11 debounce short: offset negative (-15ms)
Apr 16 18:05:55 yoshua dbus-daemon[885]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.121' (uid=1000 pid=2149 comm="/usr/lib/firefox/firefox -new-window " label="unconfined")
Apr 16 18:05:55 yoshua systemd[1]: Starting Hostname Service...
Apr 16 18:05:55 yoshua dbus-daemon[885]: [system] Successfully activated service 'org.freedesktop.hostname1'
Apr 16 18:05:55 yoshua systemd[1]: Started Hostname Service.
Apr 16 18:05:55 yoshua gvfsd[1528]: mkdir failed on directory /var/cache/samba: Permission denied
Apr 16 18:05:56 yoshua gvfsd[1528]: mkdir failed on directory /var/cache/samba: Permission denied
Apr 16 18:05:57 yoshua gvfsd[1528]: mkdir failed on directory /var/cache/samba: Permission denied
Apr 16 18:05:58 yoshua gvfsd[1528]: mkdir failed on directory /var/cache/samba: Permission denied
Apr 16 18:05:59 yoshua gvfsd[1528]: mkdir failed on directory /var/cache/samba: Permission denied
Apr 16 18:05:59 yoshua gvfsd[1528]: mkdir failed on directory /var/cache/samba: Permission denied
Apr 16 18:06:00 yoshua gvfsd[1528]: mkdir failed on directory /var/cache/samba: Permission denied
Apr 16 18:06:00 yoshua gvfsd[1528]: mkdir failed on directory /var/cache/samba: Permission denied
Apr 16 18:06:10 yoshua kernel: [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe A (start=22662 end=22663) time 111 us, min 1073, max 1079, scanline start 1072, end 1080
Apr 16 18:06:13 yoshua kernel: [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe A (start=22830 end=22831) time 357 us, min 1073, max 1079, scanline start 1072, end 1096
Apr 16 18:06:45 yoshua kernel: [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe A (start=24753 end=24754) time 239 us, min 1073, max 1079, scanline start 1066, end 1079
Apr 16 18:06:51 yoshua gnome-shell[1512]: Some code accessed the property 'WindowPreviewMenu' on the module 'windowPreview'. That property was defined with 'let' or 'const' inside the module. This was previously supported, but is not correct according to the ES6 standard. Any symbols to be exported from a module must be defined with 'var'. The property access will work as previously for the time being, but please fix your code anyway.

EDIT: It is working fine now. No more peaks from one core, all are continuously working on a small level. The last thing I did was what @Gryu recommended: I switched into tty. Switched to lightdm sudo dpkg-reconfigure lightdm which didn't change anything. I restarted and switched back to gdm3 via the same command.

I don't understand how this helped, but I am happy. Thanks you very much!

EDIT: The way I see it, I can avoid the problem if I shutdown using the physical power-off button. I don't know what to think about it, I just leave the info here.

Gryu

You could try one or few of:

Use htop to see what processes load your system and kill them to see what will happen: killall processname or killall -9 processname to kill it forcefully.
Reinstall a package of a program or command that loads it intensively by: sudo apt purge package_name && sudo apt autoremove && sudo apt install package_name
Update/Install CPU mocrocode firmware: sudo apt update && sudo apt install intel-microcode microcode.ctl
Install a different kernel and try it
Install a different desktop manager: gdm3 instead of lightdm or vice versa, purging previous: sudo apt install gdm3 && sudo apt purge lightdm
Install a different desktop environment: sudo apt install lubuntu-desktop and try it.
Purge xubuntu-desktop or xfce4 as I was noticing that system lags when it is installed, however, not used: sudo apt purge xubuntu-desktop && sudo apt purge xfce*

My pstree -l on 19.10 with gdm3:

├─gdm3─┬─gdm-session-wor─┬─gdm-x-session─┬─Xorg───{Xorg}
│      │                 │               ├─gnome-session-b───3*[{gnome-session-b}]
│      │                 │               └─2*[{gdm-x-session}]
│      │                 └─2*[{gdm-session-wor}]
│      ├─gdm-session-wor─┬─gdm-x-session─┬─Xorg───{Xorg}
│      │                 │               ├─gnome-session-b─┬─ssh-agent
│      │                 │               │                 └─2*[{gnome-session-b}]
│      │                 │               └─2*[{gdm-x-session}]
│      │                 └─2*[{gdm-session-wor}]
│      └─2*[{gdm3}]

My pstree -l on 18.04 VM:

├─lightdm─┬─Xorg───5*[{Xorg}]
│         ├─lightdm─┬─lxsession─┬─lxpanel─┬─lxterminal─┬─bash───pstree
│         │         │           │         │            ├─bash
│         │         │           │         │            └─2*[{lxterminal}]
│         │         │           │         └─4*[{lxpanel}]
│         │         │           ├─lxpolkit───2*[{lxpolkit}]
│         │         │           ├─openbox───2*[{openbox}]
│         │         │           ├─pcmanfm───2*[{pcmanfm}]
│         │         │           ├─ssh-agent
│         │         │           └─2*[{lxsession}]
│         │         └─2*[{lightdm}]
│         └─2*[{lightdm}]

Run also journalctl -f in a terminal to see what happens. Maybe some gnome-settings-daemon (gsd) constantly trying to do something and fails throwing errors and it takes the whole core.

切换到lightdm，看看事情会改变，但做一些TTY：Alt+ Ctrl+ F3：sudo apt purge gdm3 && sudo apt install lightdm。您也可以在不删除gdm3的情况下执行此操作：sudo dpkg-reconfigure lightdm如果已安装它。

sudo dpkg-reconfigure lightdm
reboot
sudo dpkg-reconfigure gdm3

也许切换到lightdm第四和gdm3，以某种方式更改了以前由不同的图形配置工具修改的gdm3配置。

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编辑于2021-03-30

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