User avatar
micksulley
Posts: 166
Joined: Sat Mar 03, 2012 11:48 am
Location: Melton Mowbray, England

SSH breaks but ping still works

Sun Dec 23, 2018 10:53 pm

One of my Pi's which runs headless has an intermittent problem. The SSH connections breaks and I cannot re-open it, but I can still ping it, so it hasn't crashed completely. It has happened several times but can run fine for days. What can cause this?

Running Raspbian Stretch
I looked through the logs, didn't understand much of it but I think the entry in debug was about the right time

Code: Select all

Dec 23 22:17:05 pi-porch kernel: [    0.000000] On node 0 totalpages: 229376
Dec 23 22:17:05 pi-porch kernel: [    0.000000] free_area_init_node: node 0, pgdat 80c85280, node_mem_map b7014000
Dec 23 22:17:05 pi-porch kernel: [    0.000000]   Normal zone: 2016 pages used for memmap
Dec 23 22:17:05 pi-porch kernel: [    0.000000]   Normal zone: 0 pages reserved
Dec 23 22:17:05 pi-porch kernel: [    0.000000]   Normal zone: 229376 pages, LIFO batch:31
Dec 23 22:17:05 pi-porch kernel: [    0.000000] pcpu-alloc: s38720 r8192 d22720 u69632 alloc=17*4096
Dec 23 22:17:05 pi-porch kernel: [    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 
Dec 23 22:17:05 pi-porch kernel: [    0.771512] dwc_otg: Microframe scheduler enabled
Dec 23 22:17:05 pi-porch kernel: [    0.811990] dwc_otg: FIQ enabled
Dec 23 22:17:05 pi-porch kernel: [    0.811997] dwc_otg: NAK holdoff enabled
Dec 23 22:17:05 pi-porch kernel: [    0.812003] dwc_otg: FIQ split-transaction FSM enabled
Dec 23 22:17:05 pi-porch kernel: [    0.812017] Module dwc_common_port init
Dec 23 22:17:05 pi-porch kernel: [    4.750350] sd 0:0:0:0: [sda] Mode Sense: 03 00 00 00
Dec 23 22:17:05 pi-porch thd[394]: Found socket passed from systemd
Any idea how to fix or investigate further?

Return to “Troubleshooting”