[Bug 17928] New: Network: problems establishing connection after upgrade (hoary->breezy)

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Ubuntu | linux

           Summary: Network: problems establishing connection after upgrade
                    (hoary->breezy)
           Product: Ubuntu
           Version: unspecified
          Platform: i386
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: linux
        AssignedTo: ben.collins at ubuntu.com
        ReportedBy: ilja.sidoroff at iki.fi
         QAContact: kernel-bugs at lists.ubuntu.com


After upgrading to breezy I have had problems with network. Establishing
connections to internet hosts fails. The problem is most visible when using
Firefox. About half of the time connections time out. When this happens any
subsequent connection attempts fail also for a short period of time (maybe for a
couple of minutes). The problem is not limited to Firefox, but any other network
connections show similiar behaviour. Nestat shows that connections get stuct
into SYN_SENT state so it seems that for some reason network adapter drops
incoming packets. I'm using onboard network adapter (ASUS A7N8X-VM/400 mobo,
realtek 8201BL LAN). I've tried to pass acpi=off and pci=routeirq parameters to
kernel, but this doesn't help. I suspect forcedeth module has something to do
with this, but I don't know how to debug this further. Any tips would be great.

Here is cat /proc/interrupts:

CPU0
  0:   25367545    IO-APIC-edge  timer
  1:       7277    IO-APIC-edge  i8042
  8:          1    IO-APIC-edge  rtc
  9:          0   IO-APIC-level  acpi
 14:      98523    IO-APIC-edge  ide0
 15:     226823    IO-APIC-edge  ide1
 18:    4941522   IO-APIC-level  EMU10K1, nvidia
 19:          3   IO-APIC-level  ohci1394
 20:          3   IO-APIC-level  ehci_hcd:usb3
 21:     114317   IO-APIC-level  ohci_hcd:usb2
 22:    2606567   IO-APIC-level  ohci_hcd:usb1, eth0
NMI:          0
LOC:   25205317
ERR:          0
MIS:          0

and attached dmesg & lsmod outputs

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