pcnet32: eth0: transmit timed out, status 97fb, resetting - NIC card problem solution

I've encountered this problem before and I believe it  may affect other drivers (I could test but I don't have time).  This was happening on my custom Linux system with the pcnet32 driver.

pcnet32: eth0: transmit timed out, status 97fb, resetting (and some other kernel module tracing in dmesg)

Basically it means the card is connected (it shows connected in full duplex etc.. and recognized if the cable is disconnected too) but no packets can be sent or received.  I've read people say they think it's a bad card (I've actually threw some of these cards away in the past, thining the same thing!, others commented they believed the card was dead/bad or that it wasn't seated properly in their situation but I think it is likely the IOAPIC issue they found) but it's a driver/IOAPIC issue.

This was tested with a VBOX/Virtualbox machine but it seems to apply equally to physical machines (based on what I've read elsewhere).  If you have IOAPIC enabled, this driver won't work until it's disabled.

Now, the tricky thing is that with some computers and in VBOX, Centos 5 and possibly other Linux/OS won't boot successfully.

So here are the solutions for this issue:

1.) Disable IOAPIC in the motherboard (but some OS's won't boot without IOAPIC enabled).

2.) Specify the kernel option "pci=noapic" and it will work.

I hope this helps others out as I believe I've run into this issue unknowingly in many situations over the years.

One more comment is that on the very same system, I changed the NIC to an Intel and this issue did not happen with the Intel NIC (even with IOAPIC enabled), so this appears to mean that the pcnet32 driver is garbage/has an issue with IOAPIC on systems.


Tags:

pcnet, eth, transmit, timed, fb, resetting, nic, solutioni, ve, encountered, drivers, custom, linux, kernel, module, tracing, dmesg, duplex, etc, disconnected, packets, thining, commented, wasn, seated, ioapic, vbox, virtualbox, equally, elsewhere, enabled, disabled, tricky, centos, os, successfully, solutions, disable, motherboard, specify, quot, pci, noapic, unknowingly, intel,

Latest Articles

  • ImageMagick Convert PDF Not Authorized
  • ImageMagick Converted PDF to JPEG some files have a black background solution
  • Linux Mint Mate Customize the Lock screen messages and hide username and real name
  • Ubuntu/Gnome/Mint/Centos How To Take a partial screenshot
  • ssh how to verify your host key / avoid MIM attacks
  • Cisco IP Phone CP-8845 8800/8900 Series How To Reset To Factory Settings Instructions
  • ls how to list ONLY directories
  • How to encrypt your SSH private key file id_rsa
  • Linux Mint 18 Disable User Name List from showing on Login Screen
  • Firefox Cannot Hit Enter Key In Address Bar and Location History Not Working
  • Cisco Unified Communications Manager / CUCM IP 8.6,10,12 Install Error Solution
  • Ubuntu Debian Mint Linux SSHD OpenSSH Server Not Starting After Reboot Solution
  • nmap how to scan for all ports and not just the 1000 most common ports
  • Windows 7,8,10 and Server 2008, 2012, 2016, 2019 Read Only Attribute Won't Go Away
  • bind / named how to make a wildcard record and retain defined A records
  • Cisco Unified Communications Manager 12 Install Errors on Proxmox/KVM
  • Local Vs Universally Administered MAC Address NIC Refuses to come up
  • Cisco Unified Communications Manager 12 CUCM 12 - How To Enable Video Calling
  • Windows 7, 8, 10, Windows Server 2008, 2012, 2016, 2019 How To AC97 Audio Drivers and Other Unsigned Drivers
  • Cisco Unified Communications Manager / CUCM IP Telephony Definitions