内核挂起太快，恢复后继续挂起任务

2019年6月29日更新

从以下已删除的答案（海报没有足够的声誉点来发表评论）中，在Kernel.org Bugzilla中提交了一个错误报告：

• 错误203791-在冻结用户空间进程之前发生s2idle

另一个错误报告已在Launchpad中提交：

• 睡眠期间电池电量耗尽。系统在内核挂起所有任务之前挂起

2018年10月21日更新

问题仍然存在，无论我做了多少研究（大部分重复以前的研究），解决方案都没有。另一个用户今天报告了同样的问题：睡眠模式会很快耗尽电池电量

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.

• 在16:12:28系统开始挂起。
• 在16:13:14系统恢复后，但通过冻结任务继续挂起

2018年2月25日更新

最初发布此问题时，我有一台笔记本电脑已从14.04升级到16.04。从那时起，我有了一台全新笔记本电脑，全新安装了16.04。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.

请注意，系统如何在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

注意：在Ubuntu 16.04的电源设置中，电池和已插入电源的盖子关闭均设置为“挂起”。

在/etc/systemd/logind.conf默认值“ ignore”内将更改为HandleLidSwitch=suspend和HandleLidSwitchDocked=suspend。原因是连接了HDMI外部电视，并且如果将这些选项（或Ubuntu电源设置）中的任何一项设置为“忽略”或“不执行任何操作”，则当机盖关闭但电视变黑时，系统将继续运行。在Ubuntu 14.04（无systemd）下，盖子关闭时挂起按预期工作。

acpi-events，pm-utils，gnome-???有很多历史性修补。可能还有dbus-???。还尝试了各种冻结和记忆的暂停方法。

老实说，我不记得尝试过的所有不同方法，但似乎我已经在阳光下搜寻了所有东西。

/ var / log / syslog的相关内容

看着/var/log/syslog在5点05分我的系统被暂停（由systemd？）。在下午4:46（16:46），系统恢复运行，但随后内核使笔记本电脑进入睡眠状态并立即唤醒。有很多奇怪的消息，例如“ 父CPU不应该处于睡眠状态 ”。

我担心的是，最初在2016年10月发布此问题后的6个月，其他事情开始中断。例如，从挂起状态唤醒后，以太网并没有重新连接，而wifi接管了。我已经将r8169驱动程序降级为r8168，但这并没有帮助。我已经设置了网络重启，但这并没有帮助，确实有时候DNS丢失了。

这是相关的/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

这正常吗？（请注意，盖子关闭功能相同，只是systemd挂起速度更快，并且执行的任务更少）。

回顾了所有可以找到的信息之后，我得出的结论是您受此内核错误的影响。该漏洞已影响到包括华硕，戴尔，惠普，联想等在内的许多系统。如果没有进一步的活动，该漏洞将在47天之内被标记为过期，该漏洞非常热，在该漏洞的热度上得分为412，据报告影响86人们在这一刻。我建议您订阅它，并提供任何与内核相关的信息，以帮助您澄清问题，从而使其保持开放状态并让开发人员可以解决它。

可能的解决方法是升级/还原到内核4.4.8，如此处所述并已在此处确认和这里。

已要求工作 反向二等分的工作，但是该错误当前已过期，因此看起来开发人员没有获得他们确定此行为的根本原因所需的所有帮助。从细读错误报告可以看出，这个问题出现在4.4.0内核中，在4.4.8中得到解决，然后在4.5.2左右再次出现，但我不确定。

报告了另一种可能的内核升级解决方法 虽然我还没有找到关于该确认，但是在这里了。

如果您使用存储库中的内核，则在启动时可能会有所帮助 ubuntu-bug linux则从终端以创建新的错误报告，该报告提供有关您的内核/问题的特定信息。

您可能还希望排除乱序执行的罪魁祸首。您应该能够通过禁用除CPU0之外的所有内容来完成此操作，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对于跟踪此问题的根本原因很有用。

资料来源：

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

/unix/145645/disabling-cpu-cores-on-quad-core-processor-on-linux

这是dmesg中出现的特定问题：

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

最初尝试做：

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。

要使更改生效，请运行：

sudo update-grub

另外还有关于问题的报告 apt-daily.service，即更新服务在引导时运行，这使得它全部无限期地运行，无法完成。

尝试禁用该服务：

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

另一种对我有效的解决方法：

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

将以下行取消注释并设置为仍允许加载系统的值：

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

如果调整未产生负载故障，请注意dmesg，并在适当的情况下调整该值。

关于这些评论：

“ ...内核部分挂起并关闭系统电源，但是在恢复完成后立即暂停挂起（除了日志中没有可见的问题）”

和

“与4.4.8完全相同的场景-Systemd挂起系统，恢复后内核立即休眠并唤醒。除非他们检查了我上面发布的日志，否则没人会知道这种情况的发生。”

这不是一个实际的问题，而纯粹是由于控制台输出被挂起并随后恢复时的结果，但是看到挂起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。

出于调试目的，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

然后触发暂停。例如，通过：

# echo mem > /sys/power/state

您应该看到所有与暂停相关的控制台输出都出来了，然后才能完全按照您的预期进行。