Hi everyone,
I have had trouble getting several versions of Linux stable on my machine over the last few months.
I do not think the issue is with the machine. Windows ran fine on it for a long time.
The current issue is that whenever I lock the screen then come back after a long time I find it frozen.
Using ctrl-alt function keys does not work.
watchdog was running on my latest Linux install. It did catch a softlockup. It did catch something with the networking. Most likely watchdog was configured to halt the system. I then disabled watchdog by putting the following entry in sysctl.conf:
kernel.nmi_watchdog=0
After reboot, I did notice that there were watchdog processes still running:
root 13 2 0 19:56 ? 00:00:00 [watchdog/0]
root 16 2 0 19:56 ? 00:00:00 [watchdog/1]
root 22 2 0 19:56 ? 00:00:00 [watchdog/2]
root 28 2 0 19:56 ? 00:00:00 [watchdog/3]
root 34 2 0 19:56 ? 00:00:00 [watchdog/4]
root 40 2 0 19:56 ? 00:00:00 [watchdog/5]
root 46 2 0 19:56 ? 00:00:00 [watchdog/6]
root 52 2 0 19:56 ? 00:00:00 [watchdog/7]
root 58 2 0 19:56 ? 00:00:00 [watchdog/8]
root 64 2 0 19:56 ? 00:00:00 [watchdog/9]
root 70 2 0 19:56 ? 00:00:00 [watchdog/10]
root 76 2 0 19:56 ? 00:00:00 [watchdog/11]
root 82 2 0 19:56 ? 00:00:00 [watchdog/12]
root 88 2 0 19:56 ? 00:00:00 [watchdog/13]
root 94 2 0 19:56 ? 00:00:00 [watchdog/14]
root 100 2 0 19:56 ? 00:00:00 [watchdog/15]
root 127 2 0 19:56 ? 00:00:00 [watchdogd]
root 11202 3313 0 22:07 pts/0 00:00:00 grep --color=auto watchdog
Everything was running fine for a few days. Today the system froze. There are tons of lines in journalctl and the kern.log like this just before I forcibly rebooted.
Gaming-3 kernel: [10847.185615] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=01:00:5e:00:00:01:44:e9:dd:4d:5f:2c:08:00 SRC=192.168.2.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF PROTO=2
I am on a home network but there are several WIFI networks running. My parents have a home office. The network guy setup a reasonably sophisticated setup. The 192.x IP is my machines gateway. I have no idea what 224.0..0.1 is. I assume something on the network is trying to reach a device through my wireless adapter. Maybe a ping?
I just have the default rules in ufw enabled: Deny ALL incoming Allow ALL outgoing.
If I turn UFW off, disable it, my system has not frozen yet.
Turning off logging does not work. I am not surprised. Logging would just eat up disk space not freeze the kernel.
I think the problem is that either watchdog was not disabled or UFW needs to be configured properly. I disabled UFW last night yet it still seems to be running this morning. The system locked up. The last lines in kern.log are a little different though. The source and destination IP's are different. How can I stop UFW from running?
Mar 25 21:19:58 -AB350-Gaming-3 kernel: [ 5011.827670] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=01:00:5e:00:00:fb:44:e9:dd:4d:5f:32:08:00 SRC=192.168.2.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0x00 TTL=1 ID=17
641 DF PROTO=2
Mar 25 21:19:58 -AB350-Gaming-3 kernel: [ 5012.749595] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=01:00:5e:00:00:fb:54:99:63:c9:a5:01:08:00 SRC=192.168.2.166 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=
54661 PROTO=2
Mar 25 21:20:11 -AB350-Gaming-3 kernel: [ 5025.241280] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=01:00:5e:00:00:01:44:e9:dd:4d:5f:2c:08:00 SRC=192.168.2.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF
PROTO=2
Mar 25 21:20:50 -AB350-Gaming-3 kernel: [ 5064.255654] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=01:00:5e:00:00:01:44:e9:dd:4d:5f:2c:08:00 SRC=192.168.2.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF
PROTO=2
Mar 25 21:21:30 -AB350-Gaming-3 kernel: [ 5104.294042] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=01:00:5e:00:00:01:44:e9:dd:4d:5f:2c:08:00 SRC=192.168.2.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF
PROTO=2
Mar 25 21:21:59 -AB350-Gaming-3 kernel: [ 5133.733538] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=74:da:da:97:05:18:44:e9:dd:4d:5f:32:08:00 SRC=198.252.206.25 DST=192.168.2.196 LEN=113 TOS=0x08 PREC=0x00 TTL=5
2 ID=1095 DF PROTO=TCP SPT=443 DPT=37790 WINDOW=62 RES=0x00 ACK PSH URGP=0
Mar 25 21:22:00 -AB350-Gaming-3 kernel: [ 5133.884016] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=74:da:da:97:05:18:44:e9:dd:4d:5f:32:08:00 SRC=198.252.206.25 DST=192.168.2.196 LEN=113 TOS=0x08 PREC=0x00 TTL=5
2 ID=1096 DF PROTO=TCP SPT=443 DPT=37790 WINDOW=62 RES=0x00 ACK PSH URGP=0
Mar 25 21:22:00 -AB350-Gaming-3 kernel: [ 5134.126893] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=74:da:da:97:05:18:44:e9:dd:4d:5f:32:08:00 SRC=198.252.206.25 DST=192.168.2.196 LEN=113 TOS=0x08 PREC=0x00 TTL=5
2 ID=1097 DF PROTO=TCP SPT=443 DPT=37790 WINDOW=62 RES=0x00 ACK PSH URGP=0
Mar 25 21:22:00 -AB350-Gaming-3 kernel: [ 5134.729285] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=74:da:da:97:05:18:44:e9:dd:4d:5f:32:08:00 SRC=198.252.206.25 DST=192.168.2.196 LEN=113 TOS=0x08 PREC=0x00 TTL=5
2 ID=1098 DF PROTO=TCP SPT=443 DPT=37790 WINDOW=62 RES=0x00 ACK PSH URGP=0
Mar 25 21:22:01 -AB350-Gaming-3 kernel: [ 5135.321988] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=74:da:da:97:05:18:44:e9:dd:4d:5f:32:08:00 SRC=35.160.99.21 DST=192.168.2.196 LEN=83 TOS=0x00 PREC=0x00 TTL=227
ID=5087 DF PROTO=TCP SPT=443 DPT=52118 WINDOW=118 RES=0x00 ACK PSH URGP=0
Mar 25 21:22:01 -AB350-Gaming-3 kernel: [ 5135.630049] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=74:da:da:97:05:18:44:e9:dd:4d:5f:32:08:00 SRC=198.252.206.25 DST=192.168.2.196 LEN=113 TOS=0x08 PREC=0x00 TTL=5
2 ID=1099 DF PROTO=TCP SPT=443 DPT=37790 WINDOW=62 RES=0x00 ACK PSH URGP=0
Mar 25 21:22:01 -AB350-Gaming-3 kernel: [ 5135.630677] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=74:da:da:97:05:18:44:e9:dd:4d:5f:32:08:00 SRC=35.160.99.21 DST=192.168.2.196 LEN=83 TOS=0x00 PREC=0x00 TTL=227
ID=5088 DF PROTO=TCP SPT=443 DPT=52118 WINDOW=118 RES=0x00 ACK PSH URGP=0
Mar 25 21:22:02 -AB350-Gaming-3 kernel: [ 5136.009273] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=74:da:da:97:05:18:44:e9:dd:4d:5f:32:08:00 SRC=35.160.99.21 DST=192.168.2.196 LEN=83 TOS=0x00 PREC=0x00 TTL=227
ID=5089 DF PROTO=TCP SPT=443 DPT=52118 WINDOW=118 RES=0x00 ACK PSH URGP=0
Mar 25 21:22:03 -AB350-Gaming-3 kernel: [ 5136.769047] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=74:da:da:97:05:18:44:e9:dd:4d:5f:32:08:00 SRC=35.160.99.21 DST=192.168.2.196 LEN=83 TOS=0x00 PREC=0x00 TTL=227
ID=5090 DF PROTO=TCP SPT=443 DPT=52118 WINDOW=118 RES=0x00 ACK PSH URGP=0
Mar 25 21:22:03 -AB350-Gaming-3 kernel: [ 5137.575243] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=74:da:da:97:05:18:44:e9:dd:4d:5f:32:08:00 SRC=198.252.206.25 DST=192.168.2.196 LEN=113 TOS=0x08 PREC=0x00 TTL=5
2 ID=1100 DF PROTO=TCP SPT=443 DPT=37790 WINDOW=62 RES=0x00 ACK PSH URGP=0
Mar 25 21:22:31 -AB350-Gaming-3 kernel: [ 5164.817546] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=74:da:da:97:05:18:44:e9:dd:4d:5f:32:08:00 SRC=198.252.206.25 DST=192.168.2.196 LEN=113 TOS=0x08 PREC=0x00 TTL=5
2 ID=1103 DF PROTO=TCP SPT=443 DPT=37790 WINDOW=62 RES=0x00 ACK PSH URGP=0
Mar 25 21:22:49 -AB350-Gaming-3 kernel: [ 5183.346821] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=01:00:5e:00:00:01:44:e9:dd:4d:5f:2c:08:00 SRC=192.168.2.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF
PROTO=2
Mar 25 21:23:02 -AB350-Gaming-3 kernel: [ 5196.046355] [UFW BLOCK] IN=wlx74dada970518 OUT= MAC=74:da:da:97:05:18:44:e9:dd:4d:5f:32:08:00 SRC=198.252.206.25 DST=192.168.2.196 LEN=113 TOS=0x08 PREC=0x00 TTL=5
2 ID=1104 DF PROTO=TCP SPT=443 DPT=37790 WINDOW=62 RES=0x00 ACK PSH URGP=0
Any advice on this issue would be appreciated.