内核暂停太快，恢复后继续暂停任务

2024-6-6 • tag-icon

2019 年 6 月 29 日更新

从下面已删除的答案（发布者没有足够的声誉点来发表评论），错误报告已提交Kernel.org Bugzilla：

Bug 203791 - 在用户空间进程冻结之前发生 s2idle

另一份错误报告提交于发射台：

睡眠期间电池耗尽。系统在内核暂停所有任务之前暂停

2018 年 10 月 21 日更新

问题仍然存在，无论我做了多少研究（主要是重复以前的研究），都无法找到解决方案。今天另一位用户报告了同样的问题：睡眠模式耗电很快

简而言之，您可以看到我的journalctl -xe日志：

Oct 21 16:12:28 alien kernel: PM: Syncing filesystems ... done.
Oct 21 16:12:28 alien kernel: PM: Preparing system for sleep (mem)
Oct 21 16:12:29 alien whoopsie[1129]: [16:12:29] Cannot reach: https://daisy.ubuntu.com
Oct 21 16:12:29 alien whoopsie[1129]: [16:12:29] Cannot reach: https://daisy.ubuntu.com
Oct 21 16:12:29 alien nm-dispatcher[14659]: req:2 'down' [enp59s0]: start running ordered scripts...
Oct 21 16:13:14 alien kernel: Freezing user space processes ... (elapsed 0.002 seconds) done.

系统16:12:28开始暂停。
系统16:13:14恢复但暂停通过冻结任务继续

2018 年 2 月 25 日更新

当这个问题最初发布时，我有一台从 14.04 升级到 16.04 的笔记本电脑。从那时起，我又买了一台安装了 16.04 的新笔记本电脑。但问题仍然存在：

    (... Feb 24/2018 laptop lid closed system suspends ...)
Feb 24 23:20:39 alien systemd[1]: Starting TLP suspend/resume...
Feb 24 23:20:39 alien systemd[1]: Started TLP suspend/resume.
Feb 24 23:20:39 alien systemd[1]: Reached target Sleep.
Feb 24 23:20:39 alien systemd[1]: Starting Suspend...
Feb 24 23:20:39 alien systemd-sleep[9105]: /lib/systemd/system-sleep/sound: Going to suspend...
Feb 24 23:20:39 alien systemd-sleep[9105]: /lib/systemd/system-sleep/display-auto-brightness: Going to suspend...
Feb 24 23:20:39 alien systemd-sleep[9105]: Failed to connect to non-global ctrl_ifname: (nil)  error: No such file or directory
Feb 24 23:20:39 alien systemd-sleep[9106]: /lib/systemd/system-sleep/wpasupplicant failed with error code 255.
Feb 24 23:20:39 alien root: /lib/systemd/system-sleep/r8169-reset case=[ pre ]
Feb 24 23:20:40 alien systemd-sleep[9105]: Suspending system...
Feb 24 23:20:40 alien kernel: [32114.051624] PM: suspend entry (deep)
    (... Feb 25/2018 laptop lid open system resumes and immediately sleeps ...)
Feb 25 07:40:14 alien kernel: [32114.051627] PM: Syncing filesystems ... done.
Feb 25 07:40:14 alien kernel: [32114.071584] Freezing user space processes ... (elapsed 0.001 seconds) done.
Feb 25 07:40:14 alien kernel: [32114.073493] OOM killer disabled.
Feb 25 07:40:14 alien kernel: [32114.073494] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
Feb 25 07:40:14 alien kernel: [32114.074945] Suspending console(s) (use no_console_suspend to debug)
Feb 25 07:40:14 alien kernel: [32114.075534] sd 2:0:0:0: [sdb] Synchronizing SCSI cache
Feb 25 07:40:14 alien kernel: [32114.076006] sd 1:0:0:0: [sda] Synchronizing SCSI cache
Feb 25 07:40:14 alien kernel: [32114.076471] sd 1:0:0:0: [sda] Stopping disk
Feb 25 07:40:14 alien kernel: [32116.375342] ACPI: Preparing to enter system sleep state S3
Feb 25 07:40:14 alien kernel: [32116.376678] ACPI: EC: event blocked
Feb 25 07:40:14 alien kernel: [32116.376679] ACPI: EC: EC stopped
Feb 25 07:40:14 alien kernel: [32116.376680] PM: Saving platform NVS memory
Feb 25 07:40:14 alien kernel: [32116.376821] Disabling non-boot CPUs ...
Feb 25 07:40:14 alien kernel: [32116.394624] smpboot: CPU 1 is now offline
Feb 25 07:40:14 alien kernel: [32116.413577] IRQ 137: no longer affine to CPU2
Feb 25 07:40:14 alien kernel: [32116.414597] smpboot: CPU 2 is now offline
Feb 25 07:40:14 alien kernel: [32116.437543] IRQ 127: no longer affine to CPU3
Feb 25 07:40:14 alien kernel: [32116.438566] smpboot: CPU 3 is now offline
Feb 25 07:40:14 alien kernel: [32116.461504] IRQ 122: no longer affine to CPU4
Feb 25 07:40:14 alien kernel: [32116.461511] IRQ 124: no longer affine to CPU4
Feb 25 07:40:14 alien kernel: [32116.463298] smpboot: CPU 4 is now offline
Feb 25 07:40:14 alien kernel: [32116.486420] smpboot: CPU 5 is now offline
Feb 25 07:40:14 alien kernel: [32116.509384] IRQ 123: no longer affine to CPU6
Feb 25 07:40:14 alien kernel: [32116.510409] smpboot: CPU 6 is now offline
Feb 25 07:40:14 alien kernel: [32116.533331] IRQ 1: no longer affine to CPU7
Feb 25 07:40:14 alien kernel: [32116.533337] IRQ 8: no longer affine to CPU7
Feb 25 07:40:14 alien kernel: [32116.533341] IRQ 9: no longer affine to CPU7
Feb 25 07:40:14 alien kernel: [32116.533345] IRQ 12: no longer affine to CPU7
Feb 25 07:40:14 alien kernel: [32116.534378] smpboot: CPU 7 is now offline
    (... Feb 25/2018 suspend started last night now complete, system resumes ...)

Feb 25 07:40:14 alien kernel: [32116.537314] ACPI: Low-level resume complete
Feb 25 07:40:14 alien kernel: [32116.537405] ACPI: EC: EC started
Feb 25 07:40:14 alien kernel: [32116.537406] PM: Restoring platform NVS memory
Feb 25 07:40:14 alien kernel: [32116.538161] Enabling non-boot CPUs ...
Feb 25 07:40:14 alien kernel: [32116.538217] x86: Booting SMP configuration:
Feb 25 07:40:14 alien kernel: [32116.538218] smpboot: Booting Node 0 Processor 1 APIC 0x2
Feb 25 07:40:14 alien kernel: [32116.539597]  cache: parent cpu1 should not be sleeping
Feb 25 07:40:14 alien kernel: [32116.539750] CPU1 is up
Feb 25 07:40:14 alien kernel: [32116.539773] smpboot: Booting Node 0 Processor 2 APIC 0x4
Feb 25 07:40:14 alien kernel: [32116.541154]  cache: parent cpu2 should not be sleeping
Feb 25 07:40:14 alien kernel: [32116.541312] CPU2 is up
    (... SNIP ....)
Feb 25 07:40:15 alien systemd[1]: Started Daily apt upgrade and clean activities.
Feb 25 07:40:16 alien systemd[1]: Started Suspend.
Feb 25 07:40:16 alien systemd[1]: sleep.target: Unit not needed anymore. Stopping.
Feb 25 07:40:16 alien systemd[1]: Stopped target Sleep.
Feb 25 07:40:16 alien systemd[1]: tlp-sleep.service: Unit not needed anymore. Stopping.
Feb 25 07:40:16 alien systemd[1]: Stopping TLP suspend/resume...
Feb 25 07:40:16 alien systemd[1]: Reached target Suspend.
Feb 25 07:40:16 alien systemd[1]: suspend.target: Unit is bound to inactive unit systemd-suspend.service. Stopping, too.
Feb 25 07:40:16 alien systemd[1]: Stopped target Suspend.
Feb 25 07:40:16 alien systemd[1]: Started Run anacron jobs at resume.
Feb 25 07:40:16 alien NetworkManager[904]: <info>  [1519569616.5268] manager: wake requested (sleeping: yes  enabled: yes)
Feb 25 07:40:16 alien NetworkManager[904]: <info>  [1519569616.5268] manager: waking up...
Feb 25 07:40:16 alien NetworkManager[904]: <info>  [1519569616.5269] device (enp59s0): state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Feb 25 07:40:16 alien NetworkManager[904]: <info>  [1519569616.5283] device (wlp60s0): state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Feb 25 07:40:16 alien kernel: [32122.065301] IPv6: ADDRCONF(NETDEV_UP): enp59s0: link is not ready
Feb 25 07:40:16 alien kernel: [32122.065783] IPv6: ADDRCONF(NETDEV_UP): enp59s0: link is not ready
Feb 25 07:40:16 alien kernel: [32122.066900] alx 0000:3b:00.0 enp59s0: NIC Up: 1 Gbps Full
Feb 25 07:40:16 alien kernel: [32122.067126] IPv6: ADDRCONF(NETDEV_CHANGE): enp59s0: link becomes ready
Feb 25 07:40:16 alien kernel: [32122.067303] IPv6: ADDRCONF(NETDEV_UP): wlp60s0: link is not ready
Feb 25 07:40:16 alien systemd[1]: Started Run anacron jobs.
Feb 25 07:40:16 alien anacron[9772]: Anacron 2.3 started on 2018-02-25
Feb 25 07:40:16 alien anacron[9772]: Will run job `cron.daily' in 5 min.
Feb 25 07:40:16 alien anacron[9772]: Will run job `cron.weekly' in 10 min.

注意系统在 2 月 24 日晚上 11:30 暂停，然后在 2 月 25 日上午 7:40 恢复。恢复后系统立即进入“睡眠”状态，然后“唤醒”。

背景

笔记：在 Ubuntu 16.04 电源设置中，对于电池和插入电源，盖子关闭均设置为“暂停”。

在/etc/systemd/logind.conf默认设置中，“忽略”被更改为HandleLidSwitch=suspend和HandleLidSwitchDocked=suspend。原因是连接了 HDMI 外置电视，如果这些选项（或 Ubuntu 电源设置）中的任何一个被设置为“忽略”或“不执行任何操作”，则系统在盖子关闭时继续运行，但电视会变黑。在 Ubuntu 14.04（没有 systemd）下，盖子关闭时暂停功能按预期工作。

过去曾对 acpi-events、pm-utils、gnome-??? 以及可能的 dbus-??? 进行过多次修改。还尝试过各种冻结和内存暂停方法。

说实话，我不记得尝试过所有不同的方法，但似乎我已经搜索过所有可能的方法。

/var/log/syslog的相关内容

凌晨 5:05时/var/log/syslog系统被暂停（由 systemd 暂停？）。下午 4:46（16:46）时 systemd 恢复，但随后内核让笔记本电脑进入睡眠状态并立即唤醒。出现很多奇怪的消息，例如“父 CPU 不应处于休眠状态“。

我担心的是，这个问题最初于 2016 年 10 月发布，6 个月后其他事情开始出现问题。例如，以太网在从挂起状态唤醒后无法重新连接，WiFi 接管。我已将 r8169 驱动程序降级为 r8168，但这并没有帮助。我已设置网络重启，但这并没有帮助，事实上有时 DNS 会丢失。

相关内容如下/var/log/syslog：

Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.8097] manager: sleep requested (sleeping: no  enabled: yes)
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.8098] manager: sleeping...
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.8100] device (18:4F:32:8D:AA:98): state change: disconnected -> unmanaged (reason 'sleeping') [30 10 37]
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.8104] manager: NetworkManager state is now ASLEEP
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.8110] device (wlan0): state change: activated -> deactivating (reason 'sleeping') [100 110 37]
Apr 11 05:05:47 dell whoopsie[1081]: [05:05:47] offline
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.8159] device (eth0): state change: activated -> deactivating (reason 'sleeping') [100 110 37]
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.8236] device (wlan0): state change: deactivating -> disconnected (reason 'sleeping') [110 30 37]
Apr 11 05:05:47 dell avahi-daemon[1169]: Withdrawing address record for 2001:56a:f114:bf00:9466:976d:8bf9:9cc2 on wlan0.
Apr 11 05:05:47 dell avahi-daemon[1169]: Leaving mDNS multicast group on interface wlan0.IPv6 with address 2001:56a:f114:bf00:9466:976d:8bf9:9cc2.
Apr 11 05:05:47 dell avahi-daemon[1169]: Joining mDNS multicast group on interface wlan0.IPv6 with address fe80::6d92:f19f:f5c3:f173.
Apr 11 05:05:47 dell avahi-daemon[1169]: Registering new address record for fe80::6d92:f19f:f5c3:f173 on wlan0.*.
Apr 11 05:05:47 dell avahi-daemon[1169]: Withdrawing address record for fe80::6d92:f19f:f5c3:f173 on wlan0.
Apr 11 05:05:47 dell gnome-session[2394]: (deja-dup-monitor:11605): GLib-CRITICAL **: Source ID 957 was not found when attempting to remove it
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.8266] dhcp4 (wlan0): canceled DHCP transaction, DHCP client pid 21469
Apr 11 05:05:47 dell avahi-daemon[1169]: Leaving mDNS multicast group on interface wlan0.IPv6 with address fe80::6d92:f19f:f5c3:f173.
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.8267] dhcp4 (wlan0): state changed bound -> done
Apr 11 05:05:47 dell avahi-daemon[1169]: Interface wlan0.IPv6 no longer relevant for mDNS.
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.8273] dhcp6 (wlan0): canceled DHCP transaction
Apr 11 05:05:47 dell kernel: [17371.316039] wlan0: deauthenticating from 70:f1:96:42:5f:02 by local choice (Reason: 3=DEAUTH_LEAVING)
Apr 11 05:05:47 dell wpa_supplicant[1631]: wlan0: CTRL-EVENT-DISCONNECTED bssid=70:f1:96:42:5f:02 reason=3 locally_generated=1
Apr 11 05:05:47 dell avahi-daemon[1169]: Withdrawing address record for 192.168.1.68 on wlan0.
Apr 11 05:05:47 dell avahi-daemon[1169]: Leaving mDNS multicast group on interface wlan0.IPv4 with address 192.168.1.68.
Apr 11 05:05:47 dell avahi-daemon[1169]: Interface wlan0.IPv4 no longer relevant for mDNS.
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.8572] dns-mgr: Writing DNS information to /sbin/resolvconf
Apr 11 05:05:47 dell dnsmasq[21738]: setting upstream servers from DBus
Apr 11 05:05:47 dell dnsmasq[21738]: using nameserver 2001:568:ff09:10c::53#53(via eth0)
Apr 11 05:05:47 dell dnsmasq[21738]: using nameserver 2001:568:ff09:10b::122#53(via eth0)
Apr 11 05:05:47 dell dnsmasq[21738]: using nameserver 2001:568:ff09:10c::53#53(via wlan0)
Apr 11 05:05:47 dell dnsmasq[21738]: using nameserver 2001:568:ff09:10b::122#53(via wlan0)
Apr 11 05:05:47 dell wpa_supplicant[1631]: wlan0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
Apr 11 05:05:47 dell kernel: [17371.351376] cfg80211: World regulatory domain updated:
Apr 11 05:05:47 dell kernel: [17371.351381] cfg80211:  DFS Master region: unset
Apr 11 05:05:47 dell kernel: [17371.351383] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
Apr 11 05:05:47 dell kernel: [17371.351388] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
Apr 11 05:05:47 dell kernel: [17371.351391] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
Apr 11 05:05:47 dell kernel: [17371.351394] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
Apr 11 05:05:47 dell kernel: [17371.351398] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
Apr 11 05:05:47 dell kernel: [17371.351402] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
Apr 11 05:05:47 dell kernel: [17371.351406] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
Apr 11 05:05:47 dell kernel: [17371.351409] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
Apr 11 05:05:47 dell kernel: [17371.351413] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.8990] dns-mgr: Writing DNS information to /sbin/resolvconf
Apr 11 05:05:47 dell dnsmasq[21738]: setting upstream servers from DBus
Apr 11 05:05:47 dell dnsmasq[21738]: using nameserver 2001:568:ff09:10c::53#53(via eth0)
Apr 11 05:05:47 dell dnsmasq[21738]: using nameserver 2001:568:ff09:10b::122#53(via eth0)
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.9082] device (eth0): state change: deactivating -> disconnected (reason 'sleeping') [110 30 37]
Apr 11 05:05:47 dell dbus[1234]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service'
Apr 11 05:05:47 dell avahi-daemon[1169]: Withdrawing address record for 2001:56a:f114:bf00:1513:4a3e:2ff6:2764 on eth0.
Apr 11 05:05:47 dell avahi-daemon[1169]: Withdrawing address record for 2001:56a:f114:bf00:1baa:569:8a37:6121 on eth0.
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.9130] dns-mgr: Writing DNS information to /sbin/resolvconf
Apr 11 05:05:47 dell avahi-daemon[1169]: Registering new address record for 2001:56a:f114:bf00:9e2a:fb78:b1f:606 on eth0.*.
Apr 11 05:05:47 dell NetworkManager[21298]: <warn>  [1491908747.9273] sup-iface[0x275ac00,wlan0]: connection disconnected (reason -3)
Apr 11 05:05:47 dell avahi-daemon[1169]: Registering new address record for fe80::44a5:819f:4f44:182d on eth0.*.
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.9274] device (wlan0): supplicant interface state: completed -> disconnected
Apr 11 05:05:47 dell avahi-daemon[1169]: Withdrawing address record for 2001:56a:f114:bf00:9e2a:fb78:b1f:606 on eth0.
Apr 11 05:05:47 dell systemd[1]: Starting Network Manager Script Dispatcher Service...
Apr 11 05:05:47 dell avahi-daemon[1169]: Leaving mDNS multicast group on interface eth0.IPv6 with address 2001:56a:f114:bf00:9e2a:fb78:b1f:606.
Apr 11 05:05:47 dell avahi-daemon[1169]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::44a5:819f:4f44:182d.
Apr 11 05:05:47 dell avahi-daemon[1169]: Withdrawing address record for fe80::44a5:819f:4f44:182d on eth0.
Apr 11 05:05:47 dell avahi-daemon[1169]: Leaving mDNS multicast group on interface eth0.IPv6 with address fe80::44a5:819f:4f44:182d.
Apr 11 05:05:47 dell avahi-daemon[1169]: Interface eth0.IPv6 no longer relevant for mDNS.
Apr 11 05:05:47 dell dnsmasq[21738]: setting upstream servers from DBus
Apr 11 05:05:47 dell dbus[1234]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Apr 11 05:05:47 dell nm-dispatcher: req:1 'down' [wlan0]: new request (2 scripts)
Apr 11 05:05:47 dell nm-dispatcher: req:1 'down' [wlan0]: start running ordered scripts...
Apr 11 05:05:47 dell systemd[1]: Started Network Manager Script Dispatcher Service.
Apr 11 05:05:47 dell nm-dispatcher: req:2 'down' [eth0]: new request (2 scripts)
Apr 11 05:05:47 dell NetworkManager[21298]: <info>  [1491908747.9503] device (wlan0): state change: disconnected -> unmanaged (reason 'sleeping') [30 10 37]
Apr 11 05:05:48 dell rtkit-daemon[1815]: Supervising 1 threads of 1 processes of 1 users.
Apr 11 05:05:48 dell rtkit-daemon[1815]: Successfully made thread 6828 of process 2517 (n/a) owned by '1000' RT at priority 5.
Apr 11 05:05:48 dell rtkit-daemon[1815]: Supervising 2 threads of 1 processes of 1 users.
Apr 11 05:05:48 dell NetworkManager[21298]: <info>  [1491908748.4032] device (eth0): state change: disconnected -> unmanaged (reason 'sleeping') [30 10 37]
Apr 11 05:05:48 dell wpa_supplicant[1631]: nl80211: deinit ifname=wlan0 disabled_11b_rates=0
Apr 11 05:05:48 dell NetworkManager[21298]: <info>  [1491908748.4417] device (eth0): link disconnected
Apr 11 05:05:48 dell systemd[1]: Starting TLP suspend/resume...
Apr 11 05:05:48 dell nm-dispatcher: req:2 'down' [eth0]: start running ordered scripts...
Apr 11 05:05:48 dell systemd[1]: Started TLP suspend/resume.
Apr 11 05:05:48 dell systemd[1]: Reached target Sleep.
Apr 11 05:05:48 dell systemd[1]: Starting Suspend...
Apr 11 05:05:48 dell systemd-sleep[7020]: /lib/systemd/system-sleep/sound: Going to suspend...
Apr 11 05:05:48 dell systemd-sleep[7020]: Failed to connect to non-global ctrl_ifname: (nil)  error: No such file or directory
Apr 11 05:05:48 dell systemd-sleep[7022]: /lib/systemd/system-sleep/wpasupplicant failed with error code 255.
Apr 11 05:05:49 dell systemd-sleep[7020]: Suspending system...
Apr 11 16:46:51 dell kernel: [17373.370197] PM: Syncing filesystems ... done.
Apr 11 16:46:51 dell kernel: [17373.391541] PM: Preparing system for sleep (mem)
Apr 11 16:46:51 dell kernel: [17373.391987] Freezing user space processes ... (elapsed 0.003 seconds) done.
Apr 11 16:46:51 dell kernel: [17373.395058] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
Apr 11 16:46:51 dell kernel: [17373.396500] PM: Suspending system (mem)
Apr 11 16:46:51 dell kernel: [17373.396521] Suspending console(s) (use no_console_suspend to debug)
Apr 11 16:46:51 dell kernel: [17373.398621] sd 2:0:0:0: [sdc] Synchronizing SCSI cache
Apr 11 16:46:51 dell kernel: [17373.398748] sd 1:0:0:0: [sdb] Synchronizing SCSI cache
Apr 11 16:46:51 dell kernel: [17373.398842] sd 0:0:0:0: [sda] Synchronizing SCSI cache
Apr 11 16:46:51 dell kernel: [17373.398999] sd 1:0:0:0: [sdb] Stopping disk
Apr 11 16:46:51 dell kernel: [17373.399653] sd 0:0:0:0: [sda] Stopping disk
Apr 11 16:46:51 dell kernel: [17373.400760] sd 2:0:0:0: [sdc] Stopping disk
Apr 11 16:46:51 dell kernel: [17373.782939] PM: suspend of devices complete after 386.188 msecs
Apr 11 16:46:51 dell kernel: [17373.798944] PM: late suspend of devices complete after 15.999 msecs
Apr 11 16:46:51 dell kernel: [17373.800622] ehci-pci 0000:00:1d.0: System wakeup enabled by ACPI
Apr 11 16:46:51 dell kernel: [17373.800930] ehci-pci 0000:00:1a.0: System wakeup enabled by ACPI
Apr 11 16:46:51 dell kernel: [17373.800980] xhci_hcd 0000:00:14.0: System wakeup enabled by ACPI
Apr 11 16:46:51 dell kernel: [17373.815056] PM: noirq suspend of devices complete after 16.108 msecs
Apr 11 16:46:51 dell kernel: [17373.815505] ACPI: Preparing to enter system sleep state S3
Apr 11 16:46:51 dell kernel: [17373.827032] ACPI : EC: EC stopped
Apr 11 16:46:51 dell kernel: [17373.827033] PM: Saving platform NVS memory
Apr 11 16:46:51 dell kernel: [17373.827039] Disabling non-boot CPUs ...
Apr 11 16:46:51 dell kernel: [17373.827534] Broke affinity for irq 23
Apr 11 16:46:51 dell kernel: [17373.828570] smpboot: CPU 1 is now offline
Apr 11 16:46:51 dell kernel: [17373.839988] Broke affinity for irq 23
Apr 11 16:46:51 dell kernel: [17373.839993] Broke affinity for irq 30
Apr 11 16:46:51 dell kernel: [17373.841017] smpboot: CPU 2 is now offline
Apr 11 16:46:51 dell kernel: [17373.851875] Broke affinity for irq 16
Apr 11 16:46:51 dell kernel: [17373.851879] Broke affinity for irq 23
Apr 11 16:46:51 dell kernel: [17373.851882] Broke affinity for irq 30
Apr 11 16:46:51 dell kernel: [17373.852900] smpboot: CPU 3 is now offline
Apr 11 16:46:51 dell kernel: [17373.863836] Broke affinity for irq 16
Apr 11 16:46:51 dell kernel: [17373.863841] Broke affinity for irq 23
Apr 11 16:46:51 dell kernel: [17373.863845] Broke affinity for irq 30
Apr 11 16:46:51 dell kernel: [17373.864873] smpboot: CPU 4 is now offline
Apr 11 16:46:51 dell kernel: [17373.875982] Broke affinity for irq 16
Apr 11 16:46:51 dell kernel: [17373.875987] Broke affinity for irq 23
Apr 11 16:46:51 dell kernel: [17373.875990] Broke affinity for irq 30
Apr 11 16:46:51 dell kernel: [17373.877020] smpboot: CPU 5 is now offline
Apr 11 16:46:51 dell kernel: [17373.891692] Broke affinity for irq 16
Apr 11 16:46:51 dell kernel: [17373.891700] Broke affinity for irq 23
Apr 11 16:46:51 dell kernel: [17373.891707] Broke affinity for irq 27
Apr 11 16:46:51 dell kernel: [17373.891710] Broke affinity for irq 30
Apr 11 16:46:51 dell kernel: [17373.892762] smpboot: CPU 6 is now offline
Apr 11 16:46:51 dell kernel: [17373.907749] Broke affinity for irq 1
Apr 11 16:46:51 dell kernel: [17373.907759] Broke affinity for irq 9
Apr 11 16:46:51 dell kernel: [17373.907764] Broke affinity for irq 12
Apr 11 16:46:51 dell kernel: [17373.907769] Broke affinity for irq 16
Apr 11 16:46:51 dell kernel: [17373.907774] Broke affinity for irq 23
Apr 11 16:46:51 dell kernel: [17373.907777] Broke affinity for irq 25
Apr 11 16:46:51 dell kernel: [17373.907779] Broke affinity for irq 27
Apr 11 16:46:51 dell kernel: [17373.907781] Broke affinity for irq 28
Apr 11 16:46:51 dell kernel: [17373.907783] Broke affinity for irq 30
Apr 11 16:46:51 dell kernel: [17373.908817] smpboot: CPU 7 is now offline
Apr 11 16:46:51 dell kernel: [17373.924754] ACPI: Low-level resume complete
Apr 11 16:46:51 dell kernel: [17373.924793] ACPI : EC: EC started
Apr 11 16:46:51 dell kernel: [17373.924794] PM: Restoring platform NVS memory
Apr 11 16:46:51 dell kernel: [17373.925803] microcode: CPU0 microcode updated early to revision 0x1c, date = 2015-02-26
Apr 11 16:46:51 dell kernel: [17373.925825] Enabling non-boot CPUs ...
Apr 11 16:46:51 dell kernel: [17373.944779] x86: Booting SMP configuration:
Apr 11 16:46:51 dell kernel: [17373.944780] smpboot: Booting Node 0 Processor 1 APIC 0x1
Apr 11 16:46:51 dell kernel: [17373.948142]  cache: parent cpu1 should not be sleeping
Apr 11 16:46:51 dell kernel: [17373.948292] CPU1 is up
Apr 11 16:46:51 dell kernel: [17373.964863] smpboot: Booting Node 0 Processor 2 APIC 0x2
Apr 11 16:46:51 dell kernel: [17373.965785] microcode: CPU2 microcode updated early to revision 0x1c, date = 2015-02-26
Apr 11 16:46:51 dell kernel: [17373.968640]  cache: parent cpu2 should not be sleeping
Apr 11 16:46:51 dell kernel: [17373.968795] CPU2 is up
Apr 11 16:46:51 dell kernel: [17373.988826] smpboot: Booting Node 0 Processor 3 APIC 0x3
Apr 11 16:46:51 dell kernel: [17373.992163]  cache: parent cpu3 should not be sleeping
Apr 11 16:46:51 dell kernel: [17373.992310] CPU3 is up
Apr 11 16:46:51 dell kernel: [17374.008879] smpboot: Booting Node 0 Processor 4 APIC 0x4
Apr 11 16:46:51 dell kernel: [17374.009697] microcode: CPU4 microcode updated early to revision 0x1c, date = 2015-02-26
Apr 11 16:46:51 dell kernel: [17374.012573]  cache: parent cpu4 should not be sleeping
Apr 11 16:46:51 dell kernel: [17374.012722] CPU4 is up
Apr 11 16:46:51 dell kernel: [17374.033044] smpboot: Booting Node 0 Processor 5 APIC 0x5
Apr 11 16:46:51 dell kernel: [17374.036644]  cache: parent cpu5 should not be sleeping
Apr 11 16:46:51 dell kernel: [17374.036796] CPU5 is up
Apr 11 16:46:51 dell kernel: [17374.073039] smpboot: Booting Node 0 Processor 6 APIC 0x6
Apr 11 16:46:51 dell kernel: [17374.073925] microcode: CPU6 microcode updated early to revision 0x1c, date = 2015-02-26
Apr 11 16:46:51 dell kernel: [17374.076895]  cache: parent cpu6 should not be sleeping
Apr 11 16:46:51 dell kernel: [17374.077046] CPU6 is up
Apr 11 16:46:51 dell kernel: [17374.101162] smpboot: Booting Node 0 Processor 7 APIC 0x7
Apr 11 16:46:51 dell kernel: [17374.104861]  cache: parent cpu7 should not be sleeping
Apr 11 16:46:51 dell kernel: [17374.105012] CPU7 is up
Apr 11 16:46:51 dell kernel: [17374.111893] ACPI: Waking up from system sleep state S3
Apr 11 16:46:51 dell kernel: [17374.169369] ehci-pci 0000:00:1d.0: System wakeup disabled by ACPI
Apr 11 16:46:51 dell kernel: [17374.170294] ehci-pci 0000:00:1a.0: System wakeup disabled by ACPI
Apr 11 16:46:51 dell kernel: [17374.170310] xhci_hcd 0000:00:14.0: System wakeup disabled by ACPI
Apr 11 16:46:51 dell kernel: [17374.170418] PM: noirq resume of devices complete after 17.795 msecs

这是正常的吗？（请注意，lid-close 做同样的事情，只是 systemd 暂停速度更快，执行的任务更少）。

答案1

在查阅了我能找到的所有信息后，我得出结论，你受到了这个内核错误。已影响了包括华硕、戴尔、惠普、联想等在内的众多系统。如果没有进一步的活动，该漏洞将在 47 天内过期，该漏洞非常热门，漏洞热度得分为 412，目前已报告影响 86 人。我建议您订阅它并提供任何与内核相关的信息来帮助澄清问题，以便它保持开放状态，开发人员可以解决它。

可能的解决方法正在升级/恢复至内核 4.4.8（如前所述）这里并确认这里和这里。

已要求工作反向二分内核但该错误目前已过期，因此看起来开发人员没有得到他们需要的所有帮助来确定此行为的根本原因。据我所知，通过仔细阅读错误报告，该问题出现在内核 4.4.0 中，在 4.4.8 中得到解决，然后在 4.5.2 左右再次出现，但我不敢肯定。

报告了另一种可能的内核升级解决方法这里尽管我还没有找到关于这一点的确认。

ubuntu-bug linux如果您使用来自存储库的内核，那么从终端启动创建一个新的错误报告并提供有关您的内核/问题的具体信息可能会有所帮助。

您可能还希望排除无序执行作为罪魁祸首的可能性。您应该能够通过禁用除 CPU0 之外的所有 CPU 来实现这一点，例如：

for x in /sys/devices/system/cpu/cpu*/online; do
  echo 0 >"$x"
done

您可能还会发现此信息有助于追踪该问题的根本原因。

资料来源：

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1574125/

https://unix.stackexchange.com/questions/145645/disabling-cpu-cores-on-quad-core-processor-on-linux

答案2

这是dmesg中出现的具体问题：

PM: Preparing system for sleep (mem)
[...]
PM: Suspending system (mem)

最初尝试这样做：

sudo -H gedit /etc/default/grub

并设置以下行：

GRUB_CMDLINE_LINUX_DEFAULT="acpi_backlight=vendor"

此行中先前存在的其他参数可以保持不变，即仅添加有时指示的参数。

为了使更改生效，请运行：

sudo update-grub

此外，有报告称存在问题apt-daily.service，即更新服务在启动时运行，这使得所有更新服务无限期运行，无法完成。

尝试禁用该服务：

sudo apt-systemctl disable daily.service # disable run when system boot

对我来说合理的另一种解决方法：

sudo -H gedit /etc/systemd/system.conf

将以下行取消注释并设置为仍然允许加载系统的值：

# DefaultTimeoutStartSec = 90s
DefaultTimeoutStartSec = 10s
# DefaultTimeoutStopSec = 90s
DefaultTimeoutStopSec = 10s

如果调整没有产生加载失败，请记下 dmesg，如果合适，请调整该值。

答案3

关于这些评论：

“... 内核部分挂起并关闭系统，但在恢复时完成挂起并立即唤醒（除日志外没有其他可见问题）”

和

“与 4.4.8 完全相同的情况 - Systemd 暂停系统，恢复后内核立即进入休眠状态并唤醒。除非他们检查我上面发布的日志，否则没人会知道发生了什么。”

这不是一个实际问题，而纯粹是控制台输出被暂停并随后恢复的结果，但看到暂停期间产生的缓冲输出实际上在恢复期间出现确实令人不安。

为了调试目的，可以禁用控制台挂起：

# echo N > /sys/module/printk/parameters/console_suspend
# cat /sys/module/printk/parameters/console_suspend
N

然后触发挂起。例如，通过：

# echo mem > /sys/power/state

您应该会看到所有与暂停相关的控制台输出在恢复之前完全符合您的预期。