노트북 CPU가 800Mhz에서 무작위로 멈췄지만 플러그를 뽑은 후 다시 작동합니다.

노트북 CPU가 800Mhz에서 무작위로 멈췄지만 플러그를 뽑은 후 다시 작동합니다.

최근에 이상한 동작을 보이는 하나 Dell Precision 7550( 8개 코어, 16개 스레드) 가 있습니다 . 와 사이에서 이중 부팅을 했는데 Intel Xeon W-10885MWindows 10에서 어떤 문제도 발견하지 못했습니다. 또한 Ubuntu에 다음을 설치했습니다.Windows 10Ubuntu 20.04.4 LTSuname -r5.15.0-46-generic

cpufrequtils/focal,now 008-1.1 amd64
cpuid/focal,now 20200211-1 amd64
cpuidtool/focal,now 0.4.1-1.1 amd64
cpuinfo/focal,now 0.0~git20190201.d5e37ad-2 amd64
cpupower-gui/focal,now 0.7.2-2 amd64
indicator-cpufreq/focal,focal,now 0.2.2-0ubuntu3 all
libcpufreq0/focal,now 008-1.1 amd64
libcpuid14/focal,now 0.4.1-1.1 amd64
libcpuinfo0/focal,now 0.0~git20190201.d5e37ad-2 amd64
thermald/focal-updates,now 1.9.1-1ubuntu0.6 amd64

이 문서의 끝부분에서 실행 중인 서비스(비활성화된 서비스 등 포함) 목록을 찾을 수 있습니다. cpupower공개 저장소에서 찾을 수 없는 것 같아서 아직 설치하지 않았습니다 . 아직 설치하지 않았습니다 . 문제가 발생한다는 것을 알았기 때문에 cpufreqd비활성화했습니다 .laptop-mode-tools


질문:Ubuntu에서 노트북을 부팅하면 CPU 클럭에 문제가 없으며 작업에 따라 조정됩니다. 그러나 잠시 후 다소 무작위로 갑자기 작동이 중단되고 800Mhz(가장 낮은 설정) 더 높은 주파수로 되돌리기 위해 할 수 있는 일은 없습니다... 배터리에 연결하기 위해 플러그를 뽑는 것 외에는 할 수 있는 일이 없습니다. 플러그를 뽑으면 필요에 따라 CPU 주파수가 다시 조정됩니다. 다시 연결하면 계속해서 잘 작동합니다.처음에는 완전히 무작위로 보였지만 Firefox나 Chromium을 사용하여 YouTube 동영상을 재생하면 문제가 재현될 수 있는 것 같습니다. 잠시 동안 비디오를 재생한 후 CPU가 멈춥니다 800Mhz.지금까지는 sysbench와 같은 엄격한 벤치마크를 실행하여 문제를 재현할 수 없었습니다(그러나 많은 테스트를 수행하지는 않았습니다).

발생 시에도 /sys/devices/system/cpu/cpufreq/policy0/scaling_max_freq그대로 유지되며 ( 5300000), /sys/devices/system/cpu/cpufreq/policy0/scaling_min_freq변경되지도 않고 그대로 유지됩니다( 800000). 800Mhz거버너를 "수동으로" 변경해 도 powersaveCPU performance가 여전히 작동하지 않습니다 800Mhz(작동하는 것처럼 보이는 유일한 방법은 플러그를 뽑거나 컴퓨터를 다시 시작하는 것입니다). 사용중인 드라이버는 cpufreq이렇게 intel_pstate설명합니다 .여기 powersaveCPU 주파수를 최대로 설정하는 ondemand동안 (CPU 주파수 조정) 에 해당합니다 .performance

제거를 시도했지만 thermald문제가 계속 발생하여 문제가 발생하지 않습니다.

BIOS의 C-state가 비활성화되고 Intel Speedstep이 활성화되며 TurboMode가 활성화됩니다. 다시 말하지만, Windows 10으로 부팅하면 모든 것이 제대로 작동하는 것 같습니다.

고쳐 쓰다: 노트북이 배터리를 사용하는 경우에는 문제가 발생하지 않는 것 같습니다.이 현상은 연결된 경우에만 발생합니다. 하지만 2개의 다른 DELL 충전기를 사용해 보았는데 두 경우 모두 이런 현상이 발생했습니다.따라서 충전기에 의존하지 않습니다.

또한 Linux 커널과 BIOS가 최근 업데이트되었습니다. 문제가 이러한 업데이트 중 하나와 관련되어 있는지 모르겠습니다. 내가 아는 유일한 것은 이 문제가 Windows에서는 발생하지 않는 것 같다는 것입니다.


질문:문제를 해결하는 방법? 내 CPU를 가장 낮은 설정으로 설정하는 프로세스는 무엇입니까? 무슨 일이 일어나고 있는지 더 잘 이해하기 위해 어떤 테스트를 할 수 있나요? 원인은 무엇일까요?


  UNIT                                    LOAD      ACTIVE   SUB     DESCRIPTION                   
  accounts-daemon.service                 loaded    active   running Accounts Service              
  acpid.service                           loaded    active   running ACPI event daemon             
  alsa-restore.service                    loaded    active   exited  Save/Restore Sound Card State 
  alsa-state.service                      loaded    inactive dead    Manage Sound Card State (restore and store)                                     
  anacron.service                         loaded    inactive dead    Run anacron jobs              
  apache2.service                         loaded    active   running The Apache HTTP Server        
  apparmor.service                        loaded    active   exited  Load AppArmor profiles        
  apport-autoreport.service               loaded    inactive dead    Process error reports when automatic reporting is enabled                       
  apport.service                          loaded    active   exited  LSB: automatic crash report generation                                          
  apt-daily-upgrade.service               loaded    inactive dead    Daily apt upgrade and clean activities                                          
  apt-daily.service                       loaded    inactive dead    Daily apt download activities 
  atd.service                             loaded    active   running Deferred execution scheduler  
● auditd.service                          not-found inactive dead    auditd.service                
  avahi-daemon.service                    loaded    active   running Avahi mDNS/DNS-SD Stack       
  binfmt-support.service                  loaded    active   exited  Enable support for additional executable binary formats                         
  bluetooth.service                       loaded    active   running Bluetooth service             
  bolt.service                            loaded    active   running Thunderbolt system service    
  clamav-freshclam.service                loaded    active   running ClamAV virus database updater 
● cloud-config.service                    not-found inactive dead    cloud-config.service          
● cloud-init-local.service                not-found inactive dead    cloud-init-local.service      
  colord.service                          loaded    active   running Manage, Install and Generate Color Profiles                                     
● connman.service                         not-found inactive dead    connman.service               
● console-screen.service                  not-found inactive dead    console-screen.service        
  console-setup.service                   loaded    active   exited  Set console font and keymap   
  cpufrequtils.service                    loaded    active   exited  LSB: set CPUFreq kernel parameters                                              
  cron.service                            loaded    active   running Regular background program processing daemon                                    
  cups-browsed.service                    loaded    active   running Make remote CUPS printers available locally                                     
  cups.service                            loaded    active   running CUPS Scheduler                
  dbus.service                            loaded    active   running D-Bus System Message Bus      
  dmesg.service                           loaded    inactive dead    Save initial kernel messages after boot                                         
  dundee.service                          loaded    active   running DUN service                   
  e2scrub_all.service                     loaded    inactive dead    Online ext4 Metadata Check for All Filesystems                                  
  e2scrub_reap.service                    loaded    inactive dead    Remove Stale Online ext4 Metadata Check Snapshots                               
  emergency.service                       loaded    inactive dead    Emergency Shell               
  etc-setserial.service                   loaded    active   exited  controls configuration of serial ports                                          
● exim4.service                           not-found inactive dead    exim4.service                 
  fam.service                             loaded    active   running LSB: File Alteration Monitor  
● fancontrol.service                      masked    inactive dead    fancontrol.service            
  fstrim.service                          loaded    inactive dead    Discard unused blocks on filesystems from /etc/fstab                            
● fwupd-refresh.service                   loaded    failed   failed  Refresh fwupd metadata and update motd                                          
  fwupd.service                           loaded    active   running Firmware update daemon        
  gdm.service                             loaded    active   running GNOME Display Manager         
  getty-static.service                    loaded    inactive dead    getty on tty2-tty6 if dbus and logind are not available                         
  [email protected]                      loaded    inactive dead    Getty on tty1                 
  gpu-manager.service                     loaded    inactive dead    Detect the available GPUs and deal with any system changes                      
  grub-common.service                     loaded    inactive dead    Record successful boot for GRUB                                                 
  grub-initrd-fallback.service            loaded    inactive dead    GRUB failed boot detection    
  hddtemp.service                         loaded    active   exited  LSB: disk temperature monitoring daemon                                         
  hv-fcopy-daemon.service                 loaded    inactive dead    Hyper-V File Copy Protocol Daemon                                               
  hv-kvp-daemon.service                   loaded    inactive dead    Hyper-V KVP Protocol Daemon   
  hv-vss-daemon.service                   loaded    inactive dead    Hyper-V VSS Protocol Daemon   
  irqbalance.service                      loaded    active   running irqbalance daemon             
● kbd.service                             not-found inactive dead    kbd.service                   
  kerneloops.service                      loaded    active   running Tool to automatically collect and submit kernel crash signatures                
  keyboard-setup.service                  loaded    active   exited  Set the console keyboard layout                                                 
  kmod-static-nodes.service               loaded    active   exited  Create list of static device nodes for the current kernel                       
● laptop-mode.service                     loaded    failed   failed  Laptop Mode Tools             
  lm-sensors.service                      loaded    active   exited  Initialize hardware monitoring sensors                                          
  lmt-poll.service                        loaded    inactive dead    Laptop Mode Tools - Battery Polling Service                                     
  loadcpufreq.service                     loaded    active   exited  LSB: Load kernel modules needed to enable cpufreq scaling                       
  logrotate.service                       loaded    inactive dead    Rotate log files              
  man-db.service                          loaded    inactive dead    Daily man-db regeneration     
  memcached.service                       loaded    active   running memcached daemon              
  [email protected]                    loaded    inactive dead    Load Kernel Module drm        
  motd-news.service                       loaded    inactive dead    Message of the Day            
  mysql.service                           loaded    active   running MySQL Community Server        
  nas.service                             loaded    active   exited  LSB: start or stop the Network Audio System.                                    
  netplan-ovs-cleanup.service             loaded    inactive dead    OpenVSwitch configuration for cleanup                                           
  networkd-dispatcher.service             loaded    active   running Dispatcher daemon for systemd-networkd                                          
● NetworkManager-wait-online.service      loaded    failed   failed  Network Manager Wait Online   
  NetworkManager.service                  loaded    active   running Network Manager               
  ntp-systemd-netif.service               loaded    inactive dead    ntp-systemd-netif.service     
  ntp.service                             loaded    active   running Network Time Service          
  nvidia-persistenced.service             loaded    active   running NVIDIA Persistence Daemon     
● nvidia-powerd.service                   loaded    failed   failed  nvidia-powerd service         
● oem-config.service                      not-found inactive dead    oem-config.service            
  ofono.service                           loaded    active   running Telephony service             
  ondemand.service                        loaded    inactive dead    Set the CPU Frequency Scaling governor                                          
  openvpn.service                         loaded    active   exited  OpenVPN service               
● ovsdb-server.service                    not-found inactive dead    ovsdb-server.service          
  phpsessionclean.service                 loaded    inactive dead    Clean php session files       
  plymouth-quit-wait.service              loaded    inactive dead    Hold until boot process finishes up                                             
  plymouth-quit.service                   loaded    inactive dead    Terminate Plymouth Boot Screen                                                  
  plymouth-read-write.service             loaded    inactive dead    Tell Plymouth To Write Out Runtime Data                                         
  plymouth-start.service                  loaded    inactive dead    Show Plymouth Boot Screen     
  polkit.service                          loaded    active   running Authorization Manager         
  postfix.service                         loaded    inactive dead    Postfix Mail Transport Agent  [email protected]                       loaded    failed   failed  Postfix Mail Transport Agent (instance -)                                       
  pppd-dns.service                        loaded    inactive dead    Restore /etc/resolv.conf if the system crashed before the ppp link was shut down
  rc-local.service                        loaded    inactive dead    /etc/rc.local Compatibility   
  rescue.service                          loaded    inactive dead    Rescue Shell                  
  resolvconf-pull-resolved.service        loaded    inactive dead    resolvconf-pull-resolved.service                                                
  resolvconf.service                      loaded    active   exited  Nameserver information manager                                                  
  rpcbind.service                         loaded    active   running RPC bind portmap service      
  rsync.service                           loaded    inactive dead    fast remote file copy program daemon                                            
  rsyslog.service                         loaded    active   running System Logging Service        
  rtkit-daemon.service                    loaded    active   running RealtimeKit Scheduling Policy Service                                           
  saslauthd.service                       loaded    active   exited  LSB: saslauthd startup script 
  secureboot-db.service                   loaded    inactive dead    Secure Boot updates for DB and DBX                                              
● sendmail.service                        not-found inactive dead    sendmail.service              
● sep5.service                            loaded    failed   failed  systemd script to load sep5 driver at boot time                                 
  setserial.service                       loaded    active   exited  controls configuration of serial ports                                          
  setvtrgb.service                        loaded    active   exited  Set console scheme            
  snapd.apparmor.service                  loaded    active   exited  Load AppArmor profiles managed internally by snapd                              
  snapd.autoimport.service                loaded    inactive dead    Auto import assertions from block devices                                       
  snapd.core-fixup.service                loaded    inactive dead    Automatically repair incorrect owner/permissions on core devices                
  snapd.failure.service                   loaded    inactive dead    Failure handling of the snapd snap                                              
  snapd.recovery-chooser-trigger.service  loaded    inactive dead    Wait for the Ubuntu Core chooser trigger                                        
  snapd.seeded.service                    loaded    active   exited  Wait until snapd is fully seeded                                                
  snapd.service                           loaded    active   running Snap Daemon                   
  snapd.snap-repair.service               loaded    inactive dead    Automatically fetch and run repair assertions                                   
  sndiod.service                          loaded    active   running sndio audio and MIDI server   
● sssd.service                            not-found inactive dead    sssd.service                  
  switcheroo-control.service              loaded    active   running Switcheroo Control Proxy service                                                
  systemd-ask-password-console.service    loaded    inactive dead    Dispatch Password Requests to Console                                           
  systemd-ask-password-plymouth.service   loaded    inactive dead    Forward Password Requests to Plymouth                                           
  systemd-ask-password-wall.service       loaded    inactive dead    Forward Password Requests to Wall        
  systemd-binfmt.service                  loaded    inactive dead    Set Up Additional Binary Formats                                                
  systemd-boot-system-token.service       loaded    inactive dead    Store a System Token in an EFI Variable                                         
  systemd-fsck-root.service               loaded    active   exited  File System Check on Root Device                                                  
  systemd-fsckd.service                   loaded    inactive dead    File System Check Daemon to report status                                       
  systemd-hwdb-update.service             loaded    inactive dead    Rebuild Hardware Database     
  systemd-initctl.service                 loaded    inactive dead    initctl Compatibility Daemon  
  systemd-journal-flush.service           loaded    active   exited  Flush Journal to Persistent Storage                                             
  systemd-journald.service                loaded    active   running Journal Service               
  systemd-logind.service                  loaded    active   running Login Service                 
  systemd-machine-id-commit.service       loaded    inactive dead    Commit a transient machine-id on disk                                           
  systemd-modules-load.service            loaded    active   exited  Load Kernel Modules           
  systemd-networkd.service                loaded    inactive dead    Network Service               
  systemd-pstore.service                  loaded    inactive dead    Platform Persistent Storage Archival                                            
  systemd-quotacheck.service              loaded    inactive dead    File System Quota Check       
  systemd-random-seed.service             loaded    active   exited  Load/Save Random Seed         
  systemd-remount-fs.service              loaded    active   exited  Remount Root and Kernel File Systems                                            
  systemd-resolved.service                loaded    active   running Network Name Resolution       
  systemd-rfkill.service                  loaded    inactive dead    Load/Save RF Kill Switch Status                                                 
  systemd-sysctl.service                  loaded    active   exited  Apply Kernel Variables        
  systemd-sysusers.service                loaded    active   exited  Create System Users           
● systemd-timesyncd.service               masked    inactive dead    systemd-timesyncd.service     
  systemd-tmpfiles-clean.service          loaded    inactive dead    Cleanup of Temporary Directories                                                
  systemd-tmpfiles-setup-dev.service      loaded    active   exited  Create Static Device Nodes in /dev                                              
  systemd-tmpfiles-setup.service          loaded    active   exited  Create Volatile Files and Directories                                           
  systemd-udev-trigger.service            loaded    active   exited  udev Coldplug all Devices     
  systemd-udevd.service                   loaded    active   running udev Kernel Device Manager    
● systemd-update-done.service             not-found inactive dead    systemd-update-done.service   
  systemd-update-utmp-runlevel.service    loaded    inactive dead    Update UTMP about System Runlevel Changes                                       
  systemd-update-utmp.service             loaded    active   exited  Update UTMP about System Boot/Shutdown                                          
  systemd-user-sessions.service           loaded    active   exited  Permit User Sessions          
● systemd-vconsole-setup.service          not-found inactive dead    systemd-vconsole-setup.service                                                  
  thermald.service                        loaded    active   running Thermal Daemon Service        
  timidity.service                        loaded    active   exited  LSB: start and stop timidity  
● tlp.service                             masked    inactive dead    tlp.service                   
● ua-auto-attach.service                  not-found inactive dead    ua-auto-attach.service        
  ua-reboot-cmds.service                  loaded    inactive dead    Ubuntu Advantage reboot cmds  
  ua-timer.service                        loaded    inactive dead    Ubuntu Advantage Timer for running repeated jobs                                
● ubuntu-advantage-cloud-id-shim.service  not-found inactive dead    ubuntu-advantage-cloud-id-shim.service                                          
  ubuntu-advantage.service                loaded    inactive dead    Ubuntu Advantage GCP Auto Attach Daemon                                         
  udisks2.service                         loaded    active   running Disk Manager                  
  ufw.service                             loaded    active   exited  Uncomplicated firewall        
  unattended-upgrades.service             loaded    active   running Unattended Upgrades Shutdown  
  upower.service                          loaded    active   running Daemon for power management   
  [email protected]           loaded    active   exited  User Runtime Directory /run/user/1000                                           
  [email protected]            loaded    active   exited  User Runtime Directory /run/user/125                                            
  [email protected]                       loaded    active   running User Manager for UID 1000     
  [email protected]                        loaded    active   running User Manager for UID 125      
  uuidd.service                           loaded    inactive dead    Daemon for generating UUIDs   
● walinuxagent.service                    not-found inactive dead    walinuxagent.service          
  whoopsie.service                        loaded    active   running crash report submission daemon                                                  
  wpa_supplicant.service                  loaded    active   running WPA supplicant                
● zfs-mount.service                       not-found inactive dead    zfs-mount.service             

LOAD   = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB    = The low-level unit activation state, values depend on unit type.

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