我已经看到了几个关于冻结 Ubuntu 17.10 GUI 的问题。我也遇到了这个问题。这真的很烦人，但我相信我的问题更“准确”。
我的电脑有两个 RADEON GPU，配有三个显示器。它由我妻子的 dmseg 帐户自动记录。
当我切换到我的帐户时，情况就变得有趣了。这个 Ubuntu 版本不喜欢处理两个已登录的帐户。因为当一个帐户处于活动状态时，另一个帐户就会冻结。
例如，我 16:05 到家并登录。我工作了大约 30 分钟。当我妻子需要工作并且我们切换会话时，她会话中的时钟显示 16:05！冻结。只有鼠标移动，仅此而已。有时，会话被解锁，一切正常。但有时，唯一的解决方案是：
sudo pkill -u <username> -KILL
这是 dmesg -T 输出：
[qui nov 30 18:24:20 2017] rfkill: input handler enabled
[qui nov 30 18:24:37 2017] rfkill: input handler disabled
[qui nov 30 18:47:32 2017] kauditd_printk_skb: 58 callbacks suppressed
[qui nov 30 18:47:32 2017] audit: type=1400 audit(1512078451.812:70): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/snapd/snap-confine" pid=24651 comm="apparmor_parser"
[qui nov 30 18:47:32 2017] audit: type=1400 audit(1512078451.838:71): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=24651 comm="apparmor_parser"
[qui nov 30 18:47:32 2017] audit: type=1400 audit(1512078451.838:72): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/snapd/snap-confine//snap_update_ns" pid=24651 comm="apparmor_parser"
[qui nov 30 19:06:58 2017] rfkill: input handler enabled
[qui nov 30 19:07:10 2017] rfkill: input handler disabled
[qui nov 30 19:08:00 2017] rfkill: input handler enabled
[qui nov 30 19:08:00 2017] rfkill: input handler disabled
[qui nov 30 19:08:34 2017] rfkill: input handler enabled
[qui nov 30 19:08:52 2017] rfkill: input handler disabled
[qui nov 30 20:42:55 2017] rfkill: input handler enabled
[qui nov 30 20:43:05 2017] rfkill: input handler disabled
[qui nov 30 20:59:45 2017] rfkill: input handler enabled
[qui nov 30 20:59:55 2017] rfkill: input handler disabled
[qui nov 30 20:59:57 2017] rfkill: input handler enabled
[qui nov 30 20:59:57 2017] rfkill: input handler disabled
[qui nov 30 21:01:54 2017] rfkill: input handler enabled
[qui nov 30 21:02:00 2017] rfkill: input handler disabled
现在，/var/log/syslog 输出：
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (**) Option "fd" "37"
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (II) event1 - (II) Power Button: (II) device removed
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (**) Option "fd" "92"
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (II) event0 - (II) Power Button: (II) device removed
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (**) Option "fd" "79"
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (II) event2 - (II) HID 0566:3032: (II) device removed
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (**) Option "fd" "101"
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (**) Option "fd" "94"
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (II) event4 - (II) USB OPTICAL MOUSE : (II) device removed
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (**) Option "fd" "101"
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (II) event3 - (II) HID 0566:3032: (II) device removed
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (II) AIGLX: Suspending AIGLX clients for VT switch
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (II) systemd-logind: got pause for 13:65
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (II) systemd-logind: got pause for 13:64
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (II) systemd-logind: got pause for 226:1
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (II) systemd-logind: got pause for 13:68
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (II) systemd-logind: got pause for 226:0
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (II) systemd-logind: got pause for 13:67
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19378]: (II) systemd-logind: got pause for 13:66
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got resume for 13:67
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got resume for 13:66
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got resume for 226:1
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got resume for 13:68
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got resume for 226:0
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) AIGLX: Resuming AIGLX clients after VT switch
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): EDID vendor "AOC", prod id 5906
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Using hsync ranges from config file
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Using vrefresh ranges from config file
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Printing DDC gathered Modelines:
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "1280x1024"x0.0 135.00 1280 1296 1440 1688 1024 1025 1028 1066 +hsync +vsync (80.0 kHz eP)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "800x600"x0.0 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync (37.9 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "800x600"x0.0 36.00 800 824 896 1024 600 601 603 625 +hsync +vsync (35.2 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "640x480"x0.0 31.50 640 656 720 840 480 481 484 500 -hsync -vsync (37.5 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "640x480"x0.0 31.50 640 664 704 832 480 489 492 520 -hsync -vsync (37.9 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "640x480"x0.0 30.24 640 704 768 864 480 483 486 525 -hsync -vsync (35.0 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "640x480"x0.0 25.18 640 656 752 800 480 490 492 525 -hsync -vsync (31.5 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "720x400"x0.0 28.32 720 738 846 900 400 412 414 449 -hsync +vsync (31.5 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "1024x768"x0.0 78.75 1024 1040 1136 1312 768 769 772 800 +hsync +vsync (60.0 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "1024x768"x0.0 75.00 1024 1048 1184 1328 768 771 777 806 -hsync -vsync (56.5 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "1024x768"x0.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "832x624"x0.0 57.28 832 864 928 1152 624 625 628 667 -hsync -vsync (49.7 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "800x600"x0.0 49.50 800 816 896 1056 600 601 604 625 +hsync +vsync (46.9 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "800x600"x0.0 50.00 800 856 976 1040 600 637 643 666 +hsync +vsync (48.1 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "1280x1024"x0.0 108.00 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync (64.0 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "640x400"x70.0 23.35 640 656 720 800 400 401 404 417 -hsync +vsync (29.2 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) RADEON(0): Modeline "1024x768"x72.0 78.43 1024 1080 1192 1360 768 769 772 801 -hsync +vsync (57.7 kHz e)
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event2 - (II) HID 0566:3032: (II) is tagged by udev as: Keyboard
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event2 - (II) HID 0566:3032: (II) device is a keyboard
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event3 - (II) HID 0566:3032: (II) is tagged by udev as: Keyboard
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event3 - (II) HID 0566:3032: (II) device is a keyboard
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event4 - (II) USB OPTICAL MOUSE : (II) is tagged by udev as: Mouse
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event4 - (II) USB OPTICAL MOUSE : (II) device is a pointer
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got resume for 13:65
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event1 - (II) Power Button: (II) is tagged by udev as: Keyboard
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event1 - (II) Power Button: (II) device is a keyboard
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got resume for 13:64
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event0 - (II) Power Button: (II) is tagged by udev as: Keyboard
Nov 30 21:06:49 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event0 - (II) Power Button: (II) device is a keyboard
Nov 30 21:06:49 olimpio gsd-rfkill[19708]: g_object_notify: object class 'CcRfkillGlib' has no property named 'kernel-noinput'
Nov 30 21:06:49 olimpio kernel: [56308.647628] rfkill: input handler enabled
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (**) Option "fd" "61"
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event1 - (II) Power Button: (II) device removed
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (**) Option "fd" "51"
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event0 - (II) Power Button: (II) device removed
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (**) Option "fd" "56"
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event2 - (II) HID 0566:3032: (II) device removed
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (**) Option "fd" "50"
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (**) Option "fd" "58"
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event4 - (II) USB OPTICAL MOUSE : (II) device removed
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (**) Option "fd" "50"
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) event3 - (II) HID 0566:3032: (II) device removed
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) AIGLX: Suspending AIGLX clients for VT switch
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got pause for 13:67
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got pause for 13:66
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got pause for 226:1
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got pause for 13:68
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got pause for 226:0
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got pause for 13:65
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[19174]: (II) systemd-logind: got pause for 13:64
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) systemd-logind: got resume for 226:1
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) systemd-logind: got resume for 13:67
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) systemd-logind: got resume for 13:64
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) systemd-logind: got resume for 13:66
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) systemd-logind: got resume for 13:65
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) systemd-logind: got resume for 13:68
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) systemd-logind: got resume for 226:0
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) AIGLX: Resuming AIGLX clients after VT switch
Nov 30 21:06:58 olimpio gsd-rfkill[1696]: g_object_notify: object class 'CcRfkillGlib' has no property named 'kernel-noinput'
Nov 30 21:06:58 olimpio kernel: [56317.354529] rfkill: input handler disabled
Nov 30 21:06:58 olimpio gnome-software[1902]: running get-distro-updates with refine-flags=require-setup-action with timeout=60 on plugin=appstream took 2ms
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): EDID vendor "AOC", prod id 5906
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Using hsync ranges from config file
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Using vrefresh ranges from config file
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Printing DDC gathered Modelines:
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "1280x1024"x0.0 135.00 1280 1296 1440 1688 1024 1025 1028 1066 +hsync +vsync (80.0 kHz eP)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "800x600"x0.0 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync (37.9 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "800x600"x0.0 36.00 800 824 896 1024 600 601 603 625 +hsync +vsync (35.2 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "640x480"x0.0 31.50 640 656 720 840 480 481 484 500 -hsync -vsync (37.5 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "640x480"x0.0 31.50 640 664 704 832 480 489 492 520 -hsync -vsync (37.9 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "640x480"x0.0 30.24 640 704 768 864 480 483 486 525 -hsync -vsync (35.0 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "640x480"x0.0 25.18 640 656 752 800 480 490 492 525 -hsync -vsync (31.5 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "720x400"x0.0 28.32 720 738 846 900 400 412 414 449 -hsync +vsync (31.5 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "1024x768"x0.0 78.75 1024 1040 1136 1312 768 769 772 800 +hsync +vsync (60.0 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "1024x768"x0.0 75.00 1024 1048 1184 1328 768 771 777 806 -hsync -vsync (56.5 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "1024x768"x0.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "832x624"x0.0 57.28 832 864 928 1152 624 625 628 667 -hsync -vsync (49.7 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "800x600"x0.0 49.50 800 816 896 1056 600 601 604 625 +hsync +vsync (46.9 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "800x600"x0.0 50.00 800 856 976 1040 600 637 643 666 +hsync +vsync (48.1 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "1280x1024"x0.0 108.00 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync (64.0 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "640x400"x70.0 23.35 640 656 720 800 400 401 404 417 -hsync +vsync (29.2 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) RADEON(0): Modeline "1024x768"x72.0 78.43 1024 1080 1192 1360 768 769 772 801 -hsync +vsync (57.7 kHz e)
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) event1 - (II) Power Button: (II) is tagged by udev as: Keyboard
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) event1 - (II) Power Button: (II) device is a keyboard
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) event0 - (II) Power Button: (II) is tagged by udev as: Keyboard
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) event0 - (II) Power Button: (II) device is a keyboard
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) event2 - (II) HID 0566:3032: (II) is tagged by udev as: Keyboard
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) event2 - (II) HID 0566:3032: (II) device is a keyboard
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) event3 - (II) HID 0566:3032: (II) is tagged by udev as: Keyboard
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) event3 - (II) HID 0566:3032: (II) device is a keyboard
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) event4 - (II) USB OPTICAL MOUSE : (II) is tagged by udev as: Mouse
Nov 30 21:06:58 olimpio /usr/lib/gdm3/gdm-x-session[1308]: (II) event4 - (II) USB OPTICAL MOUSE : (II) device is a pointer
Nov 30 21:06:59 olimpio org.gnome.Shell.desktop[1496]: Window manager warning: Overwriting existing binding of keysym 73 with keysym 73 (keycode 27).
Nov 30 21:07:05 olimpio org.gnome.Shell.desktop[1496]: message repeated 3 times: [ Window manager warning: Overwriting existing binding of keysym 73 with keysym 73 (keycode 27).]
Nov 30 21:07:08 olimpio firefox[11880]: ../../../../gobject/gsignal.c:3492: signal name 'selection_changed' is invalid for instance '0x7fb5be668740' of type 'MaiAtkType319'
Nov 30 21:07:13 olimpio org.gnome.Shell.desktop[1496]: Window manager warning: Overwriting existing binding of keysym 73 with keysym 73 (keycode 27).
在 /var/log/auth.log 中，没有什么重要的信息。在 /var/log/Xorg.0.log 中，只有这些行很重要：
[ 59118.076] (II) AIGLX: Suspending AIGLX clients for VT switch
[ 59437.573] (II) AIGLX: Resuming AIGLX clients after VT switch
[ 59437.703] (II) RADEON(0): EDID vendor "AOC", prod id 5906
[ 59437.703] (II) RADEON(0): Using hsync ranges from config file
[ 59437.703] (II) RADEON(0): Using vrefresh ranges from config file
[ 59437.703] (II) RADEON(0): Printing DDC gathered Modelines:
[ 59437.703] (II) RADEON(0): Modeline "1280x1024"x0.0 135.00 1280 1296 1440 1688 1024 1025 1028 1066 +hsync +vsync (80.0 kHz eP)
[ 59437.703] (II) RADEON(0): Modeline "800x600"x0.0 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync (37.9 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "800x600"x0.0 36.00 800 824 896 1024 600 601 603 625 +hsync +vsync (35.2 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "640x480"x0.0 31.50 640 656 720 840 480 481 484 500 -hsync -vsync (37.5 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "640x480"x0.0 31.50 640 664 704 832 480 489 492 520 -hsync -vsync (37.9 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "640x480"x0.0 30.24 640 704 768 864 480 483 486 525 -hsync -vsync (35.0 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "640x480"x0.0 25.18 640 656 752 800 480 490 492 525 -hsync -vsync (31.5 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "720x400"x0.0 28.32 720 738 846 900 400 412 414 449 -hsync +vsync (31.5 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "1024x768"x0.0 78.75 1024 1040 1136 1312 768 769 772 800 +hsync +vsync (60.0 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "1024x768"x0.0 75.00 1024 1048 1184 1328 768 771 777 806 -hsync -vsync (56.5 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "1024x768"x0.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "832x624"x0.0 57.28 832 864 928 1152 624 625 628 667 -hsync -vsync (49.7 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "800x600"x0.0 49.50 800 816 896 1056 600 601 604 625 +hsync +vsync (46.9 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "800x600"x0.0 50.00 800 856 976 1040 600 637 643 666 +hsync +vsync (48.1 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "1280x1024"x0.0 108.00 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync (64.0 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "640x400"x70.0 23.35 640 656 720 800 400 401 404 417 -hsync +vsync (29.2 kHz e)
[ 59437.703] (II) RADEON(0): Modeline "1024x768"x72.0 78.43 1024 1080 1192 1360 768 769 772 801 -hsync +vsync (57.7 kHz e)
[ 59437.723] (II) input device 'Power Button', /dev/input/event1 is tagged by udev as: Keyboard
[ 59437.723] (II) input device 'Power Button', /dev/input/event1 is a keyboard
[ 59437.737] (II) input device 'Power Button', /dev/input/event0 is tagged by udev as: Keyboard
[ 59437.737] (II) input device 'Power Button', /dev/input/event0 is a keyboard
[ 59437.738] (II) input device 'HID 0566:3032', /dev/input/event2 is tagged by udev as: Keyboard
[ 59437.738] (II) input device 'HID 0566:3032', /dev/input/event2 is a keyboard
[ 59437.740] (II) input device 'HID 0566:3032', /dev/input/event3 is tagged by udev as: Keyboard
[ 59437.740] (II) input device 'HID 0566:3032', /dev/input/event3 is a keyboard
[ 59437.804] (II) input device 'USB OPTICAL MOUSE ', /dev/input/event4 is tagged by udev as: Mouse
[ 59437.804] (II) input device 'USB OPTICAL MOUSE ', /dev/input/event4 is a pointer caps
[ 59437.805] (II) input device 'USB2.0 Camera', /dev/input/event12 is tagged by udev as: Keyboard
[ 59437.805] (II) input device 'USB2.0 Camera', /dev/input/event12 is a keyboard
[ 64934.401] (II) AIGLX: Suspending AIGLX clients for VT switch
[ 68655.183] (II) UnloadModule: "libinput"
[ 68655.884] (II) UnloadModule: "libinput"
[ 68655.884] (II) UnloadModule: "libinput"
[ 68655.884] (II) UnloadModule: "libinput"
[ 68655.884] (II) UnloadModule: "libinput"
[ 68655.884] (II) UnloadModule: "libinput"
[ 68655.885] (II) UnloadModule: "libinput"
[ 68656.310] (II) Server terminated successfully (0). Closing log file.
有什么想法吗？我是否必须禁用双 GPU？