我的 Ubuntu 突然变得非常慢。当我重新启动时，它可以运行一段时间，然后又变得非常慢。
我有一台连接到 DisplayLink D6000 的 Dell Lattitude 7400
这种情况大多发生在 Dock 插入时，但不仅限于此。
例如，在 PHPStorm 中索引文件时，我的计算机无法使用。以下是htop示例
顶部
当它开始变慢时我可以找到以下一些日志：
/var/log/syslog
Jun 7 11:49:59 bastio-Latitude-7400 wpa_supplicant[948]: wlo1: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-44 noise=9999 txrate=866700
Jun 7 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): EDID vendor "AUO", prod id 25405
Jun 7 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): Printing DDC gathered Modelines:
Jun 7 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): Modeline "1920x1080"x0.0 141.00 1920 1936 1952 2104 1080 1083 1097 1116 +hsync -vsync (67.0 kHz eP)
Jun 7 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): Modeline "1920x1080"x0.0 112.80 1920 1936 1952 2104 1080 1083 1097 1116 +hsync -vsync (53.6 kHz e)
Jun 7 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): EDID vendor "AUO", prod id 25405
Jun 7 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): Printing DDC gathered Modelines:
Jun 7 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): Modeline "1920x1080"x0.0 141.00 1920 1936 1952 2104 1080 1083 1097 1116 +hsync -vsync (67.0 kHz eP)
Jun 7 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): Modeline "1920x1080"x0.0 112.80 1920 1936 1952 2104 1080 1083 1097 1116 +hsync -vsync (53.6 kHz e)
Jun 7 11:51:02 bastio-Latitude-7400 kernel: [ 864.502949] evdi: [D] evdi_detect:94 (dev=0) poll connector state: disconnected
Jun 7 11:51:02 bastio-Latitude-7400 kernel: [ 864.503007] evdi: [D] evdi_detect:94 (dev=0) poll connector state: disconnected
Jun 7 11:51:02 bastio-Latitude-7400 kernel: [ 864.503048] evdi: [D] evdi_detect:90 (dev=1) poll connector state: connected
Jun 7 11:51:02 bastio-Latitude-7400 kernel: [ 864.503055] evdi: [D] evdi_painter_get_edid_copy:242 (dev=1) EDID valid
Jun 7 11:51:02 bastio-Latitude-7400 kernel: [ 864.503721] evdi: [D] evdi_detect:90 (dev=0) poll connector state: connected
Jun 7 11:51:02 bastio-Latitude-7400 kernel: [ 864.503727] evdi: [D] evdi_painter_get_edid_copy:242 (dev=0) EDID valid
Jun 7 11:51:43 bastio-Latitude-7400 systemd[1]: Starting Cleanup of Temporary Directories...
Jun 7 11:51:44 bastio-Latitude-7400 systemd[1]: systemd-tmpfiles-clean.service: Succeeded.
Jun 7 11:51:44 bastio-Latitude-7400 systemd[1]: Finished Cleanup of Temporary Directories.
Jun 7 11:51:55 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 7 threads of 3 processes of 1 users.
Jun 7 11:53:42 bastio-Latitude-7400 rtkit-daemon[1162]: message repeated 9 times: [ Supervising 7 threads of 3 processes of 1 users.]
Jun 7 11:53:42 bastio-Latitude-7400 rtkit-daemon[1162]: Successfully made thread 5669 of process 5541 owned by '1000' RT at priority 10.
Jun 7 11:53:42 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 8 threads of 4 processes of 1 users.
Jun 7 11:57:27 bastio-Latitude-7400 rtkit-daemon[1162]: message repeated 10 times: [ Supervising 8 threads of 4 processes of 1 users.]
Jun 7 11:57:27 bastio-Latitude-7400 rtkit-daemon[1162]: Successfully made thread 5856 of process 5718 owned by '1000' RT at priority 10.
Jun 7 11:57:27 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 9 threads of 5 processes of 1 users.
日志控制-f
juin 07 11:48:01 bastio-Latitude-7400 gnome-shell[2748]: Window manager warning: WM_TRANSIENT_FOR window 0x2000670 for 0x20006a6 window override-redirect is an override-redirect window and this is not correct according to the standard, so we'll fallback to the first non-override-redirect window 0x200004c.
juin 07 11:48:23 bastio-Latitude-7400 gnome-shell[2748]: Could not create selection source for X11: Le format TARGETS n'est pas pris en charge
juin 07 11:49:11 bastio-Latitude-7400 wpa_supplicant[948]: wlo1: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-49 noise=9999 txrate=866700
juin 07 11:49:12 bastio-Latitude-7400 gnome-shell[2748]: Could not create selection source for X11: Le format TARGETS n'est pas pris en charge
juin 07 11:49:45 bastio-Latitude-7400 gnome-shell[2748]: Could not create selection source for X11: Le format TARGETS n'est pas pris en charge
juin 07 11:49:53 bastio-Latitude-7400 gnome-shell[2748]: Window manager warning: WM_TRANSIENT_FOR window 0x2000c94 for 0x2000ca7 window override-redirect is an override-redirect window and this is not correct according to the standard, so we'll fallback to the first non-override-redirect window 0x200004c.
juin 07 11:49:59 bastio-Latitude-7400 wpa_supplicant[948]: wlo1: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-44 noise=9999 txrate=866700
juin 07 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): EDID vendor "AUO", prod id 25405
juin 07 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): Printing DDC gathered Modelines:
juin 07 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): Modeline "1920x1080"x0.0 141.00 1920 1936 1952 2104 1080 1083 1097 1116 +hsync -vsync (67.0 kHz eP)
juin 07 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): Modeline "1920x1080"x0.0 112.80 1920 1936 1952 2104 1080 1083 1097 1116 +hsync -vsync (53.6 kHz e)
juin 07 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): EDID vendor "AUO", prod id 25405
juin 07 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): Printing DDC gathered Modelines:
juin 07 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): Modeline "1920x1080"x0.0 141.00 1920 1936 1952 2104 1080 1083 1097 1116 +hsync -vsync (67.0 kHz eP)
juin 07 11:51:02 bastio-Latitude-7400 /usr/lib/gdm3/gdm-x-session[2313]: (II) modeset(0): Modeline "1920x1080"x0.0 112.80 1920 1936 1952 2104 1080 1083 1097 1116 +hsync -vsync (53.6 kHz e)
juin 07 11:51:02 bastio-Latitude-7400 kernel: evdi: [D] evdi_detect:94 (dev=0) poll connector state: disconnected
juin 07 11:51:02 bastio-Latitude-7400 kernel: evdi: [D] evdi_detect:94 (dev=0) poll connector state: disconnected
juin 07 11:51:02 bastio-Latitude-7400 kernel: evdi: [D] evdi_detect:90 (dev=1) poll connector state: connected
juin 07 11:51:02 bastio-Latitude-7400 kernel: evdi: [D] evdi_painter_get_edid_copy:242 (dev=1) EDID valid
juin 07 11:51:02 bastio-Latitude-7400 kernel: evdi: [D] evdi_detect:90 (dev=0) poll connector state: connected
juin 07 11:51:02 bastio-Latitude-7400 kernel: evdi: [D] evdi_painter_get_edid_copy:242 (dev=0) EDID valid
juin 07 11:51:43 bastio-Latitude-7400 systemd[1]: Starting Cleanup of Temporary Directories...
juin 07 11:51:44 bastio-Latitude-7400 systemd[1]: systemd-tmpfiles-clean.service: Succeeded.
juin 07 11:51:44 bastio-Latitude-7400 systemd[1]: Finished Cleanup of Temporary Directories.
juin 07 11:51:55 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 7 threads of 3 processes of 1 users.
juin 07 11:51:55 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 7 threads of 3 processes of 1 users.
juin 07 11:52:59 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 7 threads of 3 processes of 1 users.
juin 07 11:52:59 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 7 threads of 3 processes of 1 users.
juin 07 11:53:04 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 7 threads of 3 processes of 1 users.
juin 07 11:53:04 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 7 threads of 3 processes of 1 users.
juin 07 11:53:42 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 7 threads of 3 processes of 1 users.
juin 07 11:53:42 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 7 threads of 3 processes of 1 users.
juin 07 11:53:42 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 7 threads of 3 processes of 1 users.
juin 07 11:53:42 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 7 threads of 3 processes of 1 users.
juin 07 11:53:42 bastio-Latitude-7400 rtkit-daemon[1162]: Successfully made thread 5669 of process 5541 owned by '1000' RT at priority 10.
juin 07 11:53:42 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 8 threads of 4 processes of 1 users.
juin 07 11:55:26 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 8 threads of 4 processes of 1 users.
juin 07 11:55:26 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 8 threads of 4 processes of 1 users.
juin 07 11:57:27 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 8 threads of 4 processes of 1 users.
juin 07 11:57:27 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 8 threads of 4 processes of 1 users.
juin 07 11:57:27 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 8 threads of 4 processes of 1 users.
juin 07 11:57:27 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 8 threads of 4 processes of 1 users.
juin 07 11:57:27 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 8 threads of 4 processes of 1 users.
juin 07 11:57:27 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 8 threads of 4 processes of 1 users.
juin 07 11:57:27 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 8 threads of 4 processes of 1 users.
juin 07 11:57:27 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 8 threads of 4 processes of 1 users.
juin 07 11:57:27 bastio-Latitude-7400 rtkit-daemon[1162]: Successfully made thread 5856 of process 5718 owned by '1000' RT at priority 10.
juin 07 11:57:27 bastio-Latitude-7400 rtkit-daemon[1162]: Supervising 9 threads of 5 processes of 1 users.
/var/log/kern.log
Jun 7 11:51:02 bastio-Latitude-7400 kernel: [ 864.502949] evdi: [D] evdi_detect:94 (dev=0) poll connector state: disconnected
Jun 7 11:51:02 bastio-Latitude-7400 kernel: [ 864.503007] evdi: [D] evdi_detect:94 (dev=0) poll connector state: disconnected
Jun 7 11:51:02 bastio-Latitude-7400 kernel: [ 864.503048] evdi: [D] evdi_detect:90 (dev=1) poll connector state: connected
Jun 7 11:51:02 bastio-Latitude-7400 kernel: [ 864.503055] evdi: [D] evdi_painter_get_edid_copy:242 (dev=1) EDID valid
Jun 7 11:51:02 bastio-Latitude-7400 kernel: [ 864.503721] evdi: [D] evdi_detect:90 (dev=0) poll connector state: connected
Jun 7 11:51:02 bastio-Latitude-7400 kernel: [ 864.503727] evdi: [D] evdi_painter_get_edid_copy:242 (dev=0) EDID valid
更新： 我使用的是双启动模式，当我在 Windows 上使用计算机时，没有收到任何错误。
答案1
系统“冻结”通常是由于运行过多、过大的程序，导致可用内存不足造成的。使用free来查看是否有交换空间，阅读man mkswap swapon fstab来创建一些交换空间。交换空间必须是连续的。使用mkswap或fallocate，而不是dd。传统上，建议使用 1.5 × RAM 的交换空间，但 YMMV。如果您不打算让系统休眠，则可以拥有少于 1.0 × RAM 的空间。
答案2
您可以尝试将笔记本电脑切换到性能模式，此线程解释了如何执行此操作：
对我来说，它只能在启动系统后工作一段时间。我的笔记本电脑即使每个核心都使用 100%，也非常安静，这对我来说很奇怪。您是否以其他方式解决了您的问题？