OK, I think I have found the reason for this bug. It is not due to stage
2 in power nap, but rather stage 1 - during powersave mode the ethernet
configuration for the card is changed, which deactivates wake-on-lan.
Since power nap first enters in stage1 then stage2, when the computer is
turned off (or suspended) in stage 2, the wake-on-lan is deactivated...
Of course I do *not* see this when manually shutting down, because my
typing on the console or through ssh gets the computer out of powersave
mode.
Here is the log file which demonstrates this. It is produced by a while
loop which logs the end of /var/log/powernap.log and the result of
"ethtool eth0" every 5 seconds. As you can see below the first two
logged entries (at t=0s and t=5s) have "Wake-on: g" but at t=+10s there
is "Wake-on: d" which I assume means deactivated...
=> I am not sure where power nap changes this, isn't it supposed to just
change speed ?
####### Time series of /var/log/powernap.log and "ethtool eth0" at 5s
intervals #########
samedi 28 avril 2012, 11:24:08 (UTC+0200)
2012-04-28_11:23:45 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [3] seconds
2012-04-28_11:23:46 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [2] seconds
2012-04-28_11:23:46 WARNING Taking action [/usr/sbin/powernap]
2012-04-28_11:23:50 WARNING Taking recover action [/usr/sbin/pm-powersave
false]
2012-04-28_11:23:59 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [6] seconds
2012-04-28_11:24:00 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [5] seconds
2012-04-28_11:24:02 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [4] seconds
2012-04-28_11:24:05 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [6] seconds
2012-04-28_11:24:06 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [5] seconds
2012-04-28_11:24:08 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [4] seconds
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Link partner advertised pause frame use: Symmetric Receive-only
Link partner advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: yes
samedi 28 avril 2012, 11:24:13 (UTC+0200)
2012-04-28_11:23:50 WARNING Taking recover action [/usr/sbin/pm-powersave
false]
2012-04-28_11:23:59 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [6] seconds
2012-04-28_11:24:00 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [5] seconds
2012-04-28_11:24:02 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [4] seconds
2012-04-28_11:24:05 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [6] seconds
2012-04-28_11:24:06 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [5] seconds
2012-04-28_11:24:08 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [4] seconds
2012-04-28_11:24:10 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [6] seconds
2012-04-28_11:24:11 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [5] seconds
2012-04-28_11:24:12 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [4] seconds
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Link partner advertised pause frame use: Symmetric Receive-only
Link partner advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: yes
samedi 28 avril 2012, 11:24:18 (UTC+0200)
2012-04-28_11:24:02 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [4] seconds
2012-04-28_11:24:05 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [6] seconds
2012-04-28_11:24:06 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [5] seconds
2012-04-28_11:24:08 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [4] seconds
2012-04-28_11:24:10 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [6] seconds
2012-04-28_11:24:11 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [5] seconds
2012-04-28_11:24:12 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [4] seconds
2012-04-28_11:24:13 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [3] seconds
2012-04-28_11:24:15 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [2] seconds
2012-04-28_11:24:15 WARNING Taking action [/usr/sbin/powernap]
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Link partner advertised pause frame use: Symmetric Receive-only
Link partner advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: d
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: yes
samedi 28 avril 2012, 11:24:23 (UTC+0200)
2012-04-28_11:24:02 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [4] seconds
2012-04-28_11:24:05 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [6] seconds
2012-04-28_11:24:06 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [5] seconds
2012-04-28_11:24:08 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [4] seconds
2012-04-28_11:24:10 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [6] seconds
2012-04-28_11:24:11 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [5] seconds
2012-04-28_11:24:12 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [4] seconds
2012-04-28_11:24:13 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [3] seconds
2012-04-28_11:24:15 WARNING Entered into GRACE PERIOD. Action
[/usr/sbin/powernap] will be taken in [2] seconds
2012-04-28_11:24:15 WARNING Taking action [/usr/sbin/powernap]
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Link partner advertised pause frame use: Symmetric Receive-only
Link partner advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: d
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: yes
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https://bugs.launchpad.net/bugs/989175
Title:
Powernap prevents waking from WakeOnLAN
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