>From the Linux kernel point of view, changing the BIOS option is not a good fix, and "pci=realloc=off" is just a workaround and not a real fix either. Linux should be able to work even without that, or at least give meaningful error messages.
The original problem appears to be that: - BIOS allocated space for the normal PCI BARs 0, 2 and 4, but not for the SR-IOV VF BARs, - Linux tried to allocate space for the SR-IOV BARs, but failed, and - Linux removed even the space allocated for the normal PCI BARs Here's the initial state Linux found: pci 0000:22:00.0: [8086:10fb] type 00 class 0x020000 pci 0000:22:00.0: reg 0x10: [mem 0xe9400000-0xe947ffff 64bit] # BAR 0 pci 0000:22:00.0: reg 0x18: [io 0xdcc0-0xdcdf] # BAR 2 pci 0000:22:00.0: reg 0x20: [mem 0xe95f8000-0xe95fbfff 64bit] # BAR 4 pci 0000:22:00.0: reg 0x30: [mem 0xe9500000-0xe957ffff pref] # ROM BAR pci 0000:22:00.0: reg 0x184: [mem 0x00000000-0x00003fff 64bit] # SR-IOV BAR pci 0000:22:00.0: reg 0x190: [mem 0x00000000-0x00003fff 64bit] # SR-IOV BAR After trying to move things around to provide space for the SR-IOV BARs: pci 0000:22:00.0: BAR 0: can't assign mem (size 0x80000) # BAR 0 pci 0000:22:00.0: BAR 4: can't assign mem (size 0x4000) # BAR 4 pci 0000:22:00.0: BAR 7: can't assign mem (size 0x100000) # SR-IOV BAR pci 0000:22:00.0: BAR 10: can't assign mem (size 0x100000) # SR-IOV BAR This may have been fixed by changes in the resource assignment code. I don't remember similar recent problem reports. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1245938 Title: Intel x520 NIC's (ixgbe) stop working in 12.10, 13.04, 13.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1245938/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
