Subject: Re: [Bugme-new] [Bug 9721] New: wake on lan fails with sky2 module

From: supersud501 <[email-masked]>
Date: Fri, 11 Jan 2008 23:19:21 +0100

Rafael J. Wysocki wrote:
>> http://bugzilla.kernel.org/show_bug.cgi?id=9721
> 
> On Friday, 11 of January 2008, supersud501 wrote:
>> Stephen Hemminger wrote:
>>> On Wed, 9 Jan 2008 16:03:00 -0800
>>> Andrew Morton <[email-masked]> wrote:
>>>
>>>> (switched to email.  Please respond via emailed reply-to-all, not via the
>>>> bugzilla web interface).
>>>>
>>>> On Wed,  9 Jan 2008 13:05:34 -0800 (PST)
>>>> [email-masked] wrote:
>>>>
>>>>> http://bugzilla.kernel.org/show_bug.cgi?id=9721
>>>>>
>>>>>            Summary: wake on lan fails with sky2 module
>>>>>            Product: ACPI
>>>>>            Version: 2.5
>>>>>      KernelVersion: 2.6.24-rc7
>>>>>           Platform: All
>>>>>         OS/Version: Linux
>>>>>               Tree: Mainline
>>>>>             Status: NEW
>>>>>           Severity: normal
>>>>>           Priority: P1
>>>>>          Component: Power-Sleep-Wake
>>>>>         AssignedTo: [email-masked]
>>>>>         ReportedBy: [email-masked]
>>>> This post-2.6.23 regression was assigned to ACPI but is quite possibly a
>>>> net driver problem?
>>>>
>>>>> Latest working kernel version: 2.6.23.12
>>>>> Earliest failing kernel version: 2.6.24-rc6 (not tested earlier kernel,
>>>>> 2.6.24-rc7 still failing)
>>>>> Distribution: Ubuntu 8.04 (but Kernel build from Kernel.org and system modifiet
>>>>> to make wake on lan work, i.e. network cards are not shutted down on poweroff)
>>>>> Hardware Environment: Marvell Technology Group Ltd. 88E8053 PCI-E Gigabit
>>>>> Ethernet Controller (rev 20) onboard Asus P5W DH motherboard, uses module SKY2
>>>>> Software Environment:
>>>>> Problem Description:
>>>>>
>>>>> When enabling wake on lan with: 'ethtool -s eth0 wol' i get the following
>>>>> status:
>>>>>
>>>>> 21:56:29 ~ # sudo ethtool eth0
>>>>> Settings for eth0:
>>>>>         Supported ports: [ TP ]
>>>>>         Supported link modes:   10baseT/Half 10baseT/Full 
>>>>>                                 100baseT/Half 100baseT/Full 
>>>>>                                 1000baseT/Half 1000baseT/Full 
>>>>>         Supports auto-negotiation: Yes
>>>>>         Advertised link modes:  10baseT/Half 10baseT/Full 
>>>>>                                 100baseT/Half 100baseT/Full 
>>>>>                                 1000baseT/Half 1000baseT/Full 
>>>>>         Advertised auto-negotiation: Yes
>>>>>         Speed: 100Mb/s
>>>>>         Duplex: Full
>>>>>         Port: Twisted Pair
>>>>>         PHYAD: 0
>>>>>         Transceiver: internal
>>>>>         Auto-negotiation: on
>>>>>         Supports Wake-on: pg
>>>>>         Wake-on: g    <---- wol enabled
>>>>>         Current message level: 0x000000ff (255)
>>>>>         Link detected: yes
>>>>>
>>>>> but after shutting down the pc doesn't wake up when magic packet is sent.
>>>>>
>>>>> the status lights of the network card are still on (so the card seems to be
>>>>> online).
>>>>>
>>>>> same system with only changed kernel to 2.6.23.12 and same procedure like
>>>>> above: wake on lan works.
>>>>>
>>>>> Steps to reproduce: enable wol on your network card using SKY2 module and it
>>>>> doesn't work too?
>>>>>
>>>>> if you need more information, just tell me, it's my first bug report.
>>>>> regards
>>>>>
>>>
>>> Wake from power off works on 2.6.24-rc7 for me.
>>> Wake from suspend doesn't because Network Manager, HAL, or some other
>>> user space tool gets confused.
>>>
>>> I just rechecked it with Fujitsu Lifebook, which has sky2 (88E8055).
>>> There many variations of this chip, and it maybe chip specific problem
>>> or ACPI/BIOS issues.  If you don't enable Wake on Lan in BIOS, the
>>> driver can't do it for you. Also, check how you are shutting down.
>>>
>>> Also since the device has to restart the PHY, it could be a switch
>>> issue if you have some fancy pants switch doing intrusion detection
>>> or something, but I doubt that.
>>>
>>> Is it a clean or fast shutdown, most distributions mark network
>>> devices as down on shutdown, but if the distribution does something 
>>> stupid like remove the driver module, then the driver is unable to setup Wake On Lan.
>>> The wake on lan setup is done in one place in the driver, add
>>> a printk to see if it is ever called.
>>>
>>>
>>
>> I tried ACPI wakeup with /proc/acpi/alarm (like i described in my last 
>> mail) and it worked... so ACPI wakeup seems to work.
>>
>> i'll try to do the printk-thing when i find some time to mess around 
>> with the sources (maybe tomorrow). if someone has some brief 
>> instructions (maybe a link to a helpfull site for kernel debugging) for 
>> me i would be thankfull and could provide some more info faster.
>>
>> some steps for me to identify the source of the problem (is it really 
>> sky2?) would be really helpfull...
> 
> Please do the tests requested at:
> http://bugzilla.kernel.org/show_bug.cgi?id=9721#c2,
> thanks.
> 

allright, didn't see that before, sorry, here are the results:

kernel 2.6.23.12 acpi=off: when shutting down the system doesn't 
poweroff (of course), but pressing the powerbutton does the trick. and 
wake on lan: WORKS

kernel 2.6.24-rc7 acpi=off: computer doesn't power off, either (so 
acpi=off works), but wol still DOESN'T work :(

so no acpi-problem?