[PLUG] Network issues

Denis Heidtmann denis.heidtmann at gmail.com
Thu Jan 21 10:09:41 PST 2010

On Thu, Jan 21, 2010 at 6:50 AM, Steve D... <blitters at gmail.com> wrote:
> On Wed, Jan 20, 2010 at 10:38 PM, Denis Heidtmann
> <denis.heidtmann at gmail.com> wrote:
>> I had previously posted this:
>> 00:0a.0 Ethernet controller: nVidia Corporation MCP78S [GeForce 8200]
>> Ethernet (rev a2)
>>        Subsystem: ASUSTeK Computer Inc. Device 82f2
>>        Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 2300
>>        Memory at fcf7c000 (32-bit, non-prefetchable) [size=4K]
>>        I/O ports at c880 [size=8]
>>        Memory at fcf7f400 (32-bit, non-prefetchable) [size=256]
>>        Memory at fcf7f000 (32-bit, non-prefetchable) [size=16]
>>        Capabilities: [44] Power Management version 2
>>        Capabilities: [50] Message Signalled Interrupts: Mask+ 64bit+ Queue=0/4 Enable+
>>        Capabilities: [6c] HyperTransport: MSI Mapping Enable+ Fixed+
>>        Kernel driver in use: forcedeth
>>        Kernel modules: forcedeth
>> This tells me the driver name.  It is not clear to me what to do with
>> this information.
>  It sounds like you may have a flaky kernel module for that ethernet
> chip.  The command "modinfo forcedeth" will show you the module
> version.  You can check if the motherboard or chipset manufacture has
> a more recent module available.  You will probably need to install the
> kernel source code and software build tools to compile the new module.
> Steve D...

I found this: http://ubuntuforums.org/showthread.php?t=1095682
I do not know if it relates to my issue.

parents at R2D4:~$ modinfo forcedeth
filename:       /lib/modules/2.6.28-17-generic/kernel/drivers/net/forcedeth.ko
license:        GPL
description:    Reverse Engineered nForce ethernet driver
author:         Manfred Spraul <manfred at colorfullife.com>
srcversion:     9C1164A059BC26160F21FCA
alias:          pci:v000010DEd00000AB3sv*sd*bc*sc*i*
... (long list)...
alias:          pci:v000010DEd000001C3sv*sd*bc*sc*i*
vermagic:       2.6.28-17-generic SMP mod_unload modversions
parm:           max_interrupt_work:forcedeth maximum events handled
per interrupt (int)
parm:           optimization_mode:In throughput mode (0), every tx &
rx packet will generate an interrupt. In CPU mode (1), interrupts are
controlled by a timer. (int)
parm:           poll_interval:Interval determines how frequent timer
interrupt is generated by [(time_in_micro_secs * 100) / (2^10)]. Min
is 0 and Max is 65535. (int)
parm:           msi:MSI interrupts are enabled by setting to 1 and
disabled by setting to 0. (int)
parm:           msix:MSIX interrupts are enabled by setting to 1 and
disabled by setting to 0. (int)
parm:           dma_64bit:High DMA is enabled by setting to 1 and
disabled by setting to 0. (int)
parm:           phy_cross:Phy crossover detection for Realtek 8201 phy
is enabled by setting to 1 and disabled by setting to 0. (int)

I do not see a module version in a form that is familiar to me.

It occurred to me that since the machine supports wake-on-lan, that as
long as there is power to the box the network "card" must be active.
This could explain why a change in state only occurs through a
power-off cycle.  Does this help?


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