我有一台安装了 ubuntu 22.04 的 Levono ThinkPad P16 Gen 1，配有两个外接显示器（均为 HDMI），时不时两个显示器都会冻结，我无法使用它们，除非我重新启动笔记本电脑
我仍然可以使用笔记本电脑的内置显示器，除了视觉冻结之外，操作系统就像两个外部屏幕仍然连接一样。如果我断开并重新连接任一显示器，笔记本电脑屏幕也会变黑，如果不重新启动，我无法恢复
有时在显示设置中切换主显示器可以解决问题，但这并不可靠，并且通常更改显示设置（例如移动屏幕配置）有时会触发冻结
对如何调试此问题有任何想法吗？xrandr -q返回以下内容：
Screen 0: minimum 320 x 200, current 7040 x 1600, maximum 16384 x 16384
eDP-1 connected 2560x1600+4480+0 (normal left inverted right x axis y axis) 345mm x 215mm
2560x1600 60.00*+ 60.00
2560x1440 60.00
2048x1536 60.00
1920x1440 60.00
1856x1392 60.00
1792x1344 60.00
2048x1152 60.00
1920x1200 60.00
1920x1080 60.00
1600x1200 60.00
1680x1050 60.00
1400x1050 60.00
1600x900 60.00
1280x1024 60.00
1400x900 60.00
1280x960 60.00
1440x810 60.00
1368x768 60.00
1280x800 60.00
1280x720 60.00
1024x768 60.00
960x720 60.00
928x696 60.00
896x672 60.00
1024x576 60.00
960x600 60.00
960x540 60.00
800x600 60.00
840x525 60.00
864x486 60.00
700x525 60.00
800x450 60.00
640x512 60.00
700x450 60.00
640x480 60.00
720x405 60.00
684x384 60.00
640x360 60.00
512x384 60.00
512x288 60.00
480x270 60.00
400x300 60.00
432x243 60.00
320x240 60.00
360x202 60.00
320x180 60.00
DP-1-0 disconnected (normal left inverted right x axis y axis)
DP-1-1 disconnected (normal left inverted right x axis y axis)
DP-1-2 connected 1920x1080+0+520 (normal left inverted right x axis y axis) 530mm x 300mm
1920x1080 75.00*+ 60.00 59.94 50.00
1680x1050 59.95
1600x900 60.00
1440x900 59.89
1280x1024 75.02 60.02
1280x720 60.00 59.94 50.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x480 59.94
640x480 75.00 72.81 59.95 59.94 59.93
DP-1-3 disconnected (normal left inverted right x axis y axis)
HDMI-1-0 connected primary 2560x1440+1920+160 (normal left inverted right x axis y axis) 697mm x 392mm
2560x1440 59.95*+ 144.00 119.99
1920x1080 120.00 119.88 60.00 59.94 50.00
1680x1050 59.95
1600x900 60.00
1440x900 59.89
1280x1024 75.02 60.02
1280x720 60.00 59.94 50.00
1024x768 75.03 60.00
800x600 75.00 72.19 60.32
720x576 50.00
720x480 59.94
640x480 75.00 59.94 59.93
DP-1-4 disconnected (normal left inverted right x axis y axis)
DP-1-5 disconnected (normal left inverted right x axis y axis)
最后几行sudo dmesg -T：
[Do Mär 2 10:01:18 2023] nvidia-modeset: ERROR: GPU:0: Idling display engine timed out: 0x0000c67e:0:0:1128
[Do Mär 2 10:01:20 2023] nvidia-modeset: ERROR: GPU:0: Idling display engine timed out: 0x0000c67e:2:0:1128
[Do Mär 2 10:01:23 2023] rfkill: input handler disabled
[Do Mär 2 10:01:24 2023] audit: type=1326 audit(1677747685.001:63): auid=1000 uid=1000 gid=1000 ses=3 subj=? pid=2957 comm="snap-store" exe="/snap/snap-store/638/usr/bin/snap-store" sig=0 arch=c000003e syscall=314 compat=0 ip=0x7f76e9c4c73d code=0x50000
[Do Mär 2 10:01:25 2023] audit: type=1107 audit(1677747686.163:64): pid=905 uid=102 auid=4294967295 ses=4294967295 subj=? msg='apparmor="DENIED" operation="dbus_method_call" bus="system" path="/org/freedesktop/PolicyKit1/Authority" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.5" pid=2957 label="snap.snap-store.snap-store" peer_pid=930 peer_label="unconfined"
exe="/usr/bin/dbus-daemon" sauid=102 hostname=? addr=? terminal=?'
[Do Mär 2 10:01:25 2023] audit: type=1420 audit(1677747686.163:65): subj_apparmor=unconfined
[Do Mär 2 10:01:25 2023] audit: type=1107 audit(1677747686.163:66): pid=905 uid=102 auid=4294967295 ses=4294967295 subj=? msg='apparmor="DENIED" operation="dbus_method_call" bus="system" path="/org/freedesktop/PolicyKit1/Authority" interface="org.freedesktop.PolicyKit1.Authority" member="CheckAuthorization" mask="send" name=":1.5" pid=2957 label="snap.snap-store.snap-store" peer_pid=930 peer_label="unconfined"
exe="/usr/bin/dbus-daemon" sauid=102 hostname=? addr=? terminal=?'
[Do Mär 2 10:01:25 2023] audit: type=1420 audit(1677747686.163:67): subj_apparmor=unconfined
[Do Mär 2 10:01:25 2023] audit: type=1107 audit(1677747686.163:68): pid=905 uid=102 auid=4294967295 ses=4294967295 subj=? msg='apparmor="DENIED" operation="dbus_method_call" bus="system" path="/org/freedesktop/PolicyKit1/Authority" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.5" pid=2957 label="snap.snap-store.snap-store" peer_pid=930 peer_label="unconfined"
exe="/usr/bin/dbus-daemon" sauid=102 hostname=? addr=? terminal=?'
[Do Mär 2 10:01:25 2023] audit: type=1420 audit(1677747686.163:69): subj_apparmor=unconfined
[Do Mär 2 10:01:25 2023] audit: type=1107 audit(1677747686.163:70): pid=905 uid=102 auid=4294967295 ses=4294967295 subj=? msg='apparmor="DENIED" operation="dbus_method_call" bus="system" path="/org/freedesktop/PolicyKit1/Authority" interface="org.freedesktop.PolicyKit1.Authority" member="CheckAuthorization" mask="send" name=":1.5" pid=2957 label="snap.snap-store.snap-store" peer_pid=930 peer_label="unconfined"
exe="/usr/bin/dbus-daemon" sauid=102 hostname=? addr=? terminal=?'
[Do Mär 2 10:01:25 2023] audit: type=1420 audit(1677747686.163:71): subj_apparmor=unconfined
[Do Mär 2 10:01:25 2023] audit: type=1400 audit(1677747686.445:72): apparmor="DENIED" operation="open" profile="snap.snap-store.snap-store" name="/etc/PackageKit/Vendor.conf" pid=2957 comm="snap-store" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
并且对于cat /var/log/Xorg.0.log：
[ 49.670] (II) systemd-logind: releasing fd for 13:80
[ 49.695] (II) UnloadModule: "libinput"
[ 49.695] (II) systemd-logind: releasing fd for 13:81
[ 49.711] (WW) NVIDIA(G0): Failed to set the display configuration
[ 49.711] (WW) NVIDIA(G0): - Setting a mode on head 0 failed: Insufficient permissions
[ 49.711] (WW) NVIDIA(G0): - Setting a mode on head 1 failed: Insufficient permissions
[ 49.711] (WW) NVIDIA(G0): - Setting a mode on head 2 failed: Insufficient permissions
[ 49.711] (WW) NVIDIA(G0): - Setting a mode on head 3 failed: Insufficient permissions
[ 49.716] (II) NVIDIA(GPU-0): Deleting GPU-0
[ 49.717] (II) Server terminated successfully (0). Closing log file.
答案1
正如 @Linus 在评论中指出的那样，自 2023 年初以来，已有多名用户在 Nvidia 论坛上报告了此问题（https://forums.developer.nvidia.com/t/error-gpu-idling-display-engine-timed-out-since-524-x-and-linux-6-1-5/242543/12）。截至目前，尚无可用的修复方法。