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#1 2011-03-14 23:47:32

shadyabhi
Member
From: Bangalore
Registered: 2010-05-23
Posts: 262
Website

eth0 not working (but wireless works) when on battery.

First of all, this bug is not reproducible every time

My ethernet doesnt work properly when on battery.

09:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8040 PCI-E Fast Ethernet Controller

Here is the dmesg output. When I remove it from AC power, I get 2-4 lines. When I insert it again, I get 5th line onwards.

sky2 0000:09:00.0: eth0: Link is up at 100 Mbps, full duplex, flow control both
sky2 0000:09:00.0: eth0: Link is down
ACPI Error: [\_SB_.VDRV] Namespace lookup failure, AE_NOT_FOUND (20101013/psargs-359)
ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPC0.H_EC._Q52] (Node ffff88007e826e88), AE_NOT_FOUND (20101013/psparse-537)
sky2 0000:09:00.0: eth0: Link is up at 100 Mbps, full duplex, flow control both
ACPI Error: [\_SB_.VDRV] Namespace lookup failure, AE_NOT_FOUND (20101013/psargs-359)
ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPC0.H_EC._Q51] (Node ffff88007e826e60), AE_NOT_FOUND (20101013/psparse-537)

There is a kernel bug which is yet unsolved since a long time. which prevented me from successfully resuming the netbook so I have intel_idle.max_cstate=0 as my kernel boot parameter.

I tried googling but couldnt get any proper results. Is it a known issue?

Last edited by shadyabhi (2011-03-15 00:12:21)

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#2 2011-03-22 01:53:38

the sad clown
Member
From: 192.168.0.X
Registered: 2011-03-20
Posts: 837

Re: eth0 not working (but wireless works) when on battery.

Do you have laptop-mode-tools installed?  There is a setting for ethernet that will prevent ethernet from being used when on battery power.


I laugh, yet the joke is on me

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#3 2011-03-22 05:57:40

shadyabhi
Member
From: Bangalore
Registered: 2010-05-23
Posts: 262
Website

Re: eth0 not working (but wireless works) when on battery.

OK. I will have a look at it. I cant confirm it now because I dont have connection via eth0 now as I am using USB modem.

Will post the results soon.

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#4 2011-03-22 12:53:37

the sad clown
Member
From: 192.168.0.X
Registered: 2011-03-20
Posts: 837

Re: eth0 not working (but wireless works) when on battery.

shadyabhi wrote:

OK. I will have a look at it. I cant confirm it now because I dont have connection via eth0 now as I am using USB modem.

Will post the results soon.

You shouldn't need an internet connection to verify it.  "pacman -Q laptop-mode-tools" will tell you if you have it installed.  If you do, check your settings in the configuration file
"/etc/laptop-mode/conf.d/ethernet.conf".  Make sure you have this: "DISABLE_ETHERNET_ON_BATTERY=0" if you want ethernet while on battery power.


I laugh, yet the joke is on me

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#5 2011-04-12 19:23:39

simongmzlj
Member
From: Canada
Registered: 2008-11-06
Posts: 135

Re: eth0 not working (but wireless works) when on battery.

I have the exact same issue.

DISABLE_ETHERNET_ON_BATTERY is set to 0 for me.

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