[arch-general] System crash troubleshooting help?

[Aron Widforss]

Good evening all,

I was just watching Linux Sucks 
(https://www.youtube.com/watch?v=5pOxlazS3zs) on Youtube when my system 
froze. It was the whole system, I could for example not switch to a TTY. 
The audio was looping a one second thing.

My troubleshooting skills are no pride to me, so I though I could just 
ask you for help. These are the last entries in the journal (in 
reverse). Did my system just crash because of a DHCP request? Or should 
I focus on the kwin error, which is the very last one?

I will probably not be available to answer to anything during the next 
20 hours.

-- 
Vänligen,
Aron Widforss

----

Jan 06 22:31:19 hostname kwin_x11[899]: QXcbConnection: XCB error: 3 
(BadWindow), sequence: 4113, resource id: 2097154, major code: 18 
(ChangeProperty), minor code: 0
Jan 06 22:31:19 hostname systemd[1]: Started Network Manager Script 
Dispatcher Service.
Jan 06 22:31:19 hostname dbus[635]: [system] Successfully activated 
service 'org.freedesktop.nm_dispatcher'
Jan 06 22:31:19 hostname kdeinit5[864]: networkmanager-qt: virtual void 
NetworkManager::DevicePrivate::propertyChanged(const QString&, const 
QVariant&) Unhandled property "Metered"
Jan 06 22:31:19 hostname systemd[1]: Starting Network Manager Script 
Dispatcher Service...
Jan 06 22:31:19 hostname dbus[635]: [system] Activating via systemd: 
service name='org.freedesktop.nm_dispatcher' 
unit='dbus-org.freedesktop.nm-dispatcher.service'
Jan 06 22:31:19 hostname NetworkManager[637]: <info>  (wlp2s0): 
Activation: successful, device activated.
Jan 06 22:31:19 hostname NetworkManager[637]: <info>  Policy set 'ssid' 
(wlp2s0) as default for IPv4 routing and DNS.
Jan 06 22:31:19 hostname NetworkManager[637]: <info>  NetworkManager 
state is now CONNECTED_GLOBAL
Jan 06 22:31:19 hostname dhclient[1074]: bound to 192.168.1.10 -- 
renewal in 37620 seconds.
Jan 06 22:31:19 hostname NetworkManager[637]: <info>  NetworkManager 
state is now CONNECTED_LOCAL
Jan 06 22:31:19 hostname NetworkManager[637]: <info>  (wlp2s0): device 
state change: secondaries -> activated (reason 'none') [90 100 0]
Jan 06 22:31:19 hostname NetworkManager[637]: <info>  (wlp2s0): device 
state change: ip-check -> secondaries (reason 'none') [80 90 0]
Jan 06 22:31:19 hostname NetworkManager[637]: <info>  (wlp2s0): device 
state change: ip-config -> ip-check (reason 'none') [70 80 0]
Jan 06 22:31:19 hostname NetworkManager[637]: <info>  (wlp2s0): DHCPv4 
state changed unknown -> bound
Jan 06 22:31:19 hostname NetworkManager[637]: <info>    nameserver 
'192.168.1.1'
Jan 06 22:31:19 hostname NetworkManager[637]: <info>    lease time 86400
Jan 06 22:31:19 hostname NetworkManager[637]: <info>    server 
identifier 192.168.1.1
Jan 06 22:31:19 hostname NetworkManager[637]: <info>    gateway 192.168.1.1
Jan 06 22:31:19 hostname NetworkManager[637]: <info>    plen 24 
(255.255.255.0)
Jan 06 22:31:19 hostname NetworkManager[637]: <info>    address 192.168.1.10
Jan 06 22:31:19 hostname dhclient[1074]: DHCPACK from 192.168.1.1
Jan 06 22:31:19 hostname dhclient[1074]: DHCPOFFER from 192.168.1.1
Jan 06 22:31:19 hostname dhclient[1074]: DHCPREQUEST on wlp2s0 to 
255.255.255.255 port 67
Jan 06 22:31:18 hostname dhclient[1074]: DHCPDISCOVER on wlp2s0 to 
255.255.255.255 port 67 interval 3
Jan 06 22:31:18 hostname NetworkManager[637]: <info>  (wlp2s0): DHCPv4 
state changed expire -> unknown
Jan 06 22:31:18 hostname NetworkManager[637]: <info>  (wlp2s0): DHCPv4 
state changed unknown -> expire
Jan 06 22:31:18 hostname kernel: ll header: 00000000: ff ff ff ff ff ff 
e0 91 f5 7a fe 9a 08 00        .........z....
Jan 06 22:31:18 hostname kernel: IPv4: martian source 255.255.255.255 
from 192.168.1.1, on dev wlp2s0
Jan 06 22:31:18 hostname dhclient[1074]: DHCPNAK from 192.168.1.1
Jan 06 22:31:18 hostname dhclient[1074]: DHCPREQUEST on wlp2s0 to 
255.255.255.255 port 67