desligamento repentino Ubuntu 16.04 - Dell inspiron 13 7000

Question

Eu tenho um dell inspiron 13 7368, rodando o Ubuntu 16.04 Tudo está bem e liso, exceto pelo fato de que aconteceu mais de uma vez que ele simplesmente desliga de repente, como se você desligasse a energia sem bateria, ela está sempre funcionando com bateria quando isso acontece.

alguma sugestão? onde procurar ou o que testar?

EDIT: entradas do syslog (a última entrada é após o travamento)

Sep 25 16:18:25 codename kernel: [60639.501898] dell_wmi: Unknown WMI event type 0x00: 0xe00c
Sep 25 16:18:25 codename kernel: [60639.501902] dell_wmi: Unknown WMI event type 0x00: 0x3
Sep 25 16:18:25 codename kernel: [60639.817472] ACPI Error: Thread 500455552 cannot release Mutex [PATM] acquired by thread 1054886336 (20150930/exmutex-399)
Sep 25 16:18:25 codename kernel: [60639.817493] ACPI Error: Method parse/execution failed [\_SB.PCI0.LPCB.ECDV._Q66] (Node ffff8802468e5ca8), AE_AML_NOT_OWNER (20150930/psparse-542)
Sep 25 16:18:25 codename kernel: [60639.837129] dell_wmi: Unknown WMI event type 0x00: 0xe00c
Sep 25 16:18:25 codename kernel: [60639.837139] dell_wmi: Unknown WMI event type 0x00: 0x1
Sep 25 16:18:51 codename systemd[1]: Started CUPS Scheduler.
Sep 25 16:31:52 codename systemd[1]: Started CUPS Scheduler.
Sep 25 16:35:03 codename systemd[1618]: Time has been changed
Sep 25 16:35:03 codename systemd-timesyncd[614]: Synchronized to time server 91.189.94.4:123 (ntp.ubuntu.com).
Sep 25 16:35:03 codename systemd[1]: Time has been changed
Sep 25 16:35:03 codename systemd[1]: apt-daily.timer: Adding 2h 4min 7.736824s random time.
Sep 25 16:35:03 codename systemd[1]: snapd.refresh.timer: Adding 5h 21min 12.369915s random time.
Sep 25 16:39:01 codename CRON[10280]: (root) CMD (  [ -x /usr/lib/php/sessionclean ] && /usr/lib/php/sessionclean)
Sep 25 16:44:53 codename systemd[1]: Started CUPS Scheduler.
Sep 25 16:57:54 codename systemd[1]: Started CUPS Scheduler.
Sep 25 17:09:01 codename CRON[10703]: (root) CMD (  [ -x /usr/lib/php/sessionclean ] && /usr/lib/php/sessionclean)
Sep 25 17:10:55 codename systemd[1]: Started CUPS Scheduler.
Sep 25 17:17:01 codename CRON[10880]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Sep 25 17:23:55 codename systemd[1]: Started CUPS Scheduler.
Sep 25 17:36:56 codename systemd[1]: Started CUPS Scheduler.
Sep 25 17:39:01 codename CRON[11177]: (root) CMD (  [ -x /usr/lib/php/sessionclean ] && /usr/lib/php/sessionclean)
Sep 25 17:49:57 codename systemd[1]: Started CUPS Scheduler.
Sep 25 18:02:57 codename systemd[1]: Started CUPS Scheduler.
Sep 25 18:09:01 codename CRON[11785]: (root) CMD (  [ -x /usr/lib/php/sessionclean ] && /usr/lib/php/sessionclean)
Sep 25 18:13:37 codename org.gtk.vfs.Daemon[1788]: Kinit for 985353 to access (null) failed: Cannot determine realm for host
Sep 25 18:15:58 codename systemd[1]: Started CUPS Scheduler.
Sep 25 18:17:01 codename CRON[11965]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
Sep 25 18:25:28 codename dbus[733]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service'
Sep 25 18:25:28 codename systemd[1]: Starting Hostname Service...
Sep 25 18:25:28 codename dbus[733]: [system] Successfully activated service 'org.freedesktop.hostname1'
Sep 25 18:25:28 codename systemd[1]: Started Hostname Service.
Sep 25 18:25:30 codename gnome-session[1943]: (nautilus:2093): Gtk-WARNING **: Refusing to add non-unique action 'TerminalNautilus:OpenFolderLocal' to action group 'ExtensionsMenuGroup'
Sep 25 18:26:21 codename gnome-session[1943]: message repeated 6 times: [ (nautilus:2093): Gtk-WARNING **: Refusing to add non-unique action 'TerminalNautilus:OpenFolderLocal' to action group 'ExtensionsMenuGroup']
Sep 25 18:28:59 codename systemd[1]: Started CUPS Scheduler.
Sep 25 18:36:50 codename rsyslogd: [origin software="rsyslogd" swVersion="8.16.0" x-pid="740" x-info="http://www.rsyslog.com"] start

    

Answer 1

Parece uma bateria ruim. Mas vamos tentar redefinir o gerenciador de energia.

Desconecte o computador da CA e remova a bateria (se ela for removível). Mantenha pressionado o botão liga / desliga por 10 a 15 segundos. Reinstale a bateria e reconecte o adaptador CA (se desejar) e veja se isso resolve o problema de desligamento.

Você também pode verificar o arquivo de log do sistema em, no terminal, digite more /var/log/syslog e encontrar nas proximidades a hora em que você teve um desligamento. Procure especificamente por mensagens relacionadas à temperatura. Se encontrado, isso indicaria que sua máquina está superaquecendo, causando os desligamentos.

Há também uma atualização de BIOS (e firmware) disponível que pode ajudar. Veja http://www.dell.com/support/home/us/en/04/product-support/product/inspiron-13-7368-2-in-1-laptop/drivers e selecione BIOS (ou ALL) como categoria.

Felicidades, Al