Red Hat Bugzilla – Bug 258661
[msi] Fedora 7 kernel upgrades break my NICs IRQs
Last modified: 2008-06-16 22:14:51 EDT
Description of problem:
My two Gigabit NICs both fail to connect after upgrading Fedora 7 kernel past
They are listed as Nvidia MCP55 Ethernet adapters and use the forcedeth module.
This looks as if it could be a re-occurence of closed Bugzilla FC6 bug 253378.
Additionally the same issue occurred with Fedora 7 on my laptop affecting the
ipw2100 wireless adapter. This laptop now runs Fedora 8 Test 1 and the problem
no longer occurs.
Steps to Reproduce:
1. Install Fedora 7
2. Upgrade kernel to any later i686 kernel from repos
After upgrading the Fedora 7 kernel to any newer i686 fc7 kernel, system is
unable to obtain an IP address via DHCP & unable to ping router when static IP set.
lspci shows that after the upgrade invalid IRQs are set for the adapters.
NICs should also work with later kernels.
See attachment for lspci info.
Created attachment 174801 [details]
lspci -v output for the NICs before & after kernel upgrade
PCI MSI was supposed to be fixed in 2.6.22 but apparently it's still broken on
Try booting with the kernel option "pci=nomsi"
If that doesn't work, try "pci=nomsi,nommconf"
Booted with 'pci=nomsi' on the newer kernel and networking is fine.
Thanks for the tip.
FYI here's the hardware list...
The same in Fedora 8 Test 3 (Gnome Spin)
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