My laptop was in sleep mode for the night, and in the morning it couldn't get up, but instead sent me (after a while) to the welcome screen, closing every program that was running (that I know of).
Clearly, I went to see the syslog, and indeed there were a couple of warnings/errors/failures there.
Here are a few:
Jun 26 09:39:51 lati kernel: [152504.094113] ACPI Error: Index value 0x0000000000000083 overflows field width 0x7 (20140424/exfldio-343)
Jun 26 09:39:51 lati kernel: [152504.094116] ACPI Error: Method parse/execution failed [\NEVT] (Node ffff88040e047258), AE_AML_REGISTER_LIMIT (20140424/psparse-536)
Jun 26 09:39:51 lati kernel: [152504.094119] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.ECDV._Q66] (Node ffff88040e044b90), AE_AML_REGISTER_LIMIT (20140424/psparse-536)
(These are probably related to Dell e7440, sleep sometimes fails, kernel logs show ACPI errors)
Then these ones:
Jun 26 09:39:51 lati kernel: [152504.467188] ata2.00: failed to get NCQ Send/Recv Log Emask 0x1
Jun 26 09:39:51 lati kernel: [152504.467571] ata2.00: failed to get NCQ Send/Recv Log Emask 0x1
(Perhaps related to Fail message during boot. Can I delay boot or how do I solve it?)
Then these ones:
Jun 26 09:39:51 lati bluetoothd[718]: Unknown command complete for opcode 19
Jun 26 09:39:51 lati bluetoothd[718]: hci0: Set Secure Simple Pairing (0x000b) failed: Busy (0x0a)
(Related to bluetoothd fails at "set secure simple pairing")
Then again ACPI errors:
Jun 26 09:39:54 lati kernel: [152508.018847] ACPI Error: Index value 0x0000000000000083 overflows field width 0x7 (20140424/exfldio-343)
Jun 26 09:39:54 lati kernel: [152508.018858] ACPI Error: Method parse/execution failed [\NEVT] (Node ffff88040e047258), AE_AML_REGISTER_LIMIT (20140424/psparse-536)
Jun 26 09:39:54 lati kernel: [152508.018869] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.ECDV._Q66] (Node ffff88040e044b90), AE_AML_REGISTER_LIMIT (20140424/psparse-536)
Then some compiz error:
Jun 26 09:40:02 lati kernel: [152515.489573] traps: compiz[2396] general protection ip:7ff4391c4c34 sp:7ffeff248248 error:0 in libframe.so.6.0.0[7ff4391bf000+1c000]
And a couple of these:
Jun 26 09:40:02 lati NetworkManager[811]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889)
(Related: What does it mean "unmanaged device"?)
And then an error in the network manager:
Jun 26 09:40:20 lati NetworkManager[811]: <error> [1466923220.217192] [nm-system.c:1266] nm_system_replace_default_ip6_route(): (wlan2): failed to set IPv6 default route: -7
(Related: NetworkManager fails to set IPv6 default route)
And then something kills compiz:
Jun 26 09:40:26 lati gnome-session[2211]: WARNING: Application 'compiz.desktop' killed by signal 11
Jun 26 09:40:26 lati gnome-session[2211]: WARNING: App 'compiz.desktop' respawning too quickly
Jun 26 09:40:26 lati gnome-session[2211]: CRITICAL: We failed, but the fail whale is dead. Sorry....
(Possibly related: GUI restarts after wake up from suspend or boot ('Application 'compiz.desktop' killed ..), "CRITICAL: We failed, but the fail whale is dead. Sorry...")
Then
Jun 26 09:40:26 lati bluetoothd[718]: hci0: Remove UUID (0x0011) failed: Busy (0x0a)
Then
Jun 26 09:40:31 lati NetworkManager[811]: <warn> error requesting auth for org.freedesktop.NetworkManager.wifi.share.open: (3) GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Could not get UID of name ':1.193218': no such name
(Related: NameHasNoOwner warning at NetworkManager)
Then
Jun 26 09:40:33 lati signond[1015]: ../../../../src/signond/signondaemon.cpp 388 init Failed to SUID root. Secure storage will not be available.
(Perhaps related: https://bugs.launchpad.net/ubuntu/+source/signon/+bug/1182007)
And finally:
Jun 26 09:41:02 lati gnome-session[694]: GLib-CRITICAL: g_environ_setenv: assertion 'value != NULL' failed
(Possibly related: Dell e7440, sleep sometimes fails, kernel logs show ACPI errors)
Quite a lot of errors, but the result is a restart, which is the real bad consequence of all of this.
I kept a copy of the syslog, in case you think anything there might be used to help analyse this issue.
My system info:
- Ubuntu 14.04.4 LTS (trusty)
- Architecture: 64 bit
- Kernel version: 3.16.0-40-generic
- Dell E7440
- Bios version: A14
/var/log/syslog. – Bach Jul 26 '16 at 07:54