Linux NIC connecting at 100M instead of 1000M gigabit speeds? It could be overheating

I was using a small box as a router and one of the ports started going off and coming back at 100M.  I truly believe it is simply that it was a case of overheating.  Although CPU temps were only about 67 degrees, the physical box itself was almost burning hot.  I solved the cooling issue and never had the issue again.

Jul 28 15:09:27 swithbox kernel: e1000e: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
Jul 28 15:09:28 swithbox kernel: e1000e: eth1 NIC Link is Down
Jul 28 15:09:30 swithbox kernel: e1000e: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
Jul 28 15:09:31 swithbox kernel: e1000e: eth1 NIC Link is Down
Jul 28 15:09:33 swithbox kernel: e1000e: eth1 NIC Link is Up 100 Mbps Full Duplex, Flow Control: Rx/Tx
Jul 28 15:09:33 swithbox kernel: e1000e 0000:02:00.0: eth1: 10/100 speed: disabling TSO

I just want to shed light that sometimes we may assume the port is just bad or the cable is bad, sometimes this can happen because of overheating.  It has never happened again since I fixed the cooling where the CPU and physical box reached scorching temperatures that have never been seen.

On that note, it probably signals it is time to apply some new thermal paste onto the bridges and CPU, as it has probably dried out especially if your load is almost non-existent.


Tags:

linux, nic, connecting, gigabit, speeds, overheatingi, router, ports, overheating, cpu, temps, cooling, jul, swithbox, kernel, eth, mbps, duplex, rx, tx, disabling, tso, scorching, temperatures, signals, thermal, bridges, dried, existent,

Latest Articles

  • How to allow SSH root user access in Linux/Debian/Mint/RHEL/Ubuntu/CentOS
  • Ansible Tutorial - Playbook How To Install From Scratch and Deploy LAMP + Wordpress on Remote Server
  • Ceph Install Errors on Proxmox / How To Fix Solution
  • Proxmox Update Error https://enterprise.proxmox.com/debian/pve bullseye InRelease 401 Unauthorized [IP: 144.217.225.162 443]
  • QEMU/KVM How to Hot-add A Virtual Disk .raw/.qcow2 via QEMU Monitor Commands
  • Proxmox How To Enable Ceph Distributed Storage Cluster with OSD and Pools
  • pulseaudio issue on QEMU/KVM guest VM when microphone is replugged/unplugged pulseaudio: pa_threaded_mainloop_lock failed pulseaudio: Reason: Invalid argument
  • Ubuntu Linux Mint - Volume Control Stopped Working
  • Proxmox Services Won't Start Failed to start The Proxmox VE cluster filesystem. Proxmox VE firewall. PVE Status Daemon. Proxmox VE scheduler. PVE Cluster HA Resource Manager Daemon. PVE Local HA Resource Manager Daemon.
  • Proxmox Guide FAQ / Errors / Howto
  • Virtualbox Vbox Issue Cannot Enable Nested Virtualization Button is Grayed/Greyed Out and Unclickable HowTo Solution
  • Virtualbox VBOX Howto Port Forward To Guests
  • Linux Ubuntu Debian Centos Mint - How To Check if Intel VT-x or AMD-V Hardware Virtualization is Enabled?
  • Linux Howto Zip Multiple Files and Directories
  • Windows Cannot Format USB drive Device Media is Write Protected Error Solution
  • Linux Mint 20 cannot install snapd missing solution
  • Virtualbox VBOX How To Install Guest-Utils/GuestUtils so drag and drop and clipboard works Ubuntu Mint Debian Linux
  • How to install Kubernetes with microk8s and deploy apps on Debian/Mint/Ubuntu Linux
  • vi how to delete everything to the end of the line or the rest of the line from the cursor
  • Cisco Howto Configure Console Port/Terminal/Comm Server with Async Cable Setup