As reported in bug #9512 [1], on my system, Commell LE-365 with
RTL-8169 NIC (02:08.0 Ethernet controller [0200]: Realtek
Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet [10ec:8169]
(rev 10)) reported as RTL8110s in dmesg, I need to do 3 steps to
get WoL working properly (the third step being new since 2.6.26
or 2.6.27):
ethtool -s eth0 wol d > /dev/null && \
ethtool -s eth0 wol g > /dev/null
acpitool -w | grep 'P2PB.*enabled' > /dev/null || \
acpitool -W 7 > /dev/null
echo enabled > "/sys/bus/pci/devices/0000:02:08.0/power/wakeup"
The patches in reply to this message replace steps 1 and 3.
I'm not sure what is still missing as after shutdown (power-off)
WoL is not possible until a power-cycle. It seems like step 3
does slightly more that what the replacing patch does.
In an ideal world it looks like step 2 shall be done automatically
by PCI subsystem while processing call to pci_enable_wake() which
calls platform_pci_sleep_wake().
I have not analysed what platform_pci_sleep_wake() does and the
fact that on my machine there is no ACPI wake-up record for the
NIC itself but just one for the parent PCI brige (that one is
required for any WoL to effectively work) certainly does not help.
Bruno
[1] http://bugzilla.kernel.org/show_bug.cgi?id=9512
Output of `acpitool -w` with the PCI bridge enabled:
Device S-state Status Sysfs node
---------------------------------------
1. SLPB S5 *enabled
2. PCI0 S5 enabled no-bus:pci0000:00
3. USB1 S3 disabled pci:0000:00:10.0
4. USB2 S3 disabled pci:0000:00:10.1
5. USB3 S3 disabled pci:0000:00:10.2
6. EHCI S3 disabled pci:0000:00:10.4
7. P2PB S5 enabled pci:0000:00:13.1
8. UAR1 S5 disabled pnp:00:07
9. PS2K S5 disabled pnp:00:09
10. AZAC S5 disabled pci:0000:80:01.0
)
Output of lspci -nn:
00:00.0 Host bridge [0600]: VIA Technologies, Inc. CX700 Host Bridge [1106:0324] (rev 03)
00:00.1 Host bridge [0600]: VIA Technologies, Inc. CX700 Host Bridge [1106:1324]
00:00.2 Host bridge [0600]: VIA Technologies, Inc. CX700 Host Bridge [1106:2324]
00:00.3 Host bridge [0600]: VIA Technologies, Inc. CX700 Host Bridge [1106:3324]
00:00.4 Host bridge [0600]: VIA Technologies, Inc. CX700 Host Bridge [1106:4324]
00:00.7 Host bridge [0600]: VIA Technologies, Inc. CX700 Host Bridge [1106:7324]
00:01.0 PCI bridge [0604]: VIA Technologies, Inc. VT8237 PCI Bridge [1106:b198]
00:0f.0 IDE interface [0101]: VIA Technologies, Inc. Device [1106:0581]
00:10.0 USB Controller [0c03]: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller [1106:3038] (rev 90)
00:10.1 USB Controller [0c03]: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller [1106:3038] (rev 90)
00:10.2 USB Controller [0c03]: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller [1106:3038] (rev 90)
00:10.4 USB Controller [0c03]: VIA Technologies, Inc. USB 2.0 [1106:3104] (rev 90)
00:11.0 ISA bridge [0601]: VIA Technologies, Inc. CX700 PCI to ISA Bridge [1106:8324]
00:11.7 Host bridge [0600]: VIA Technologies, Inc. CX700 Internal Module Bus [1106:324e]
00:13.0 Host bridge [0600]: VIA Technologies, Inc. CX700 Host Bridge [1106:324b]
00:13.1 PCI bridge [0604]: VIA Technologies, Inc. CX700 PCI to PCI Bridge [1106:324a]
01:00.0 VGA compatible controller [0300]: VIA Technologies, Inc. CX700M2 UniChrome PRO II Graphics [1106:3157] (rev 03)
02:08.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet [10ec:8169] (rev 10)
80:01.0 Audio device [0403]: VIA Technologies, Inc. VIA High Definition Audio Controller [1106:3288] (rev 10)
Output of lspci -t:
-+-[0000:80]---01.0
\-[0000:00]-+-00.0
+-00.1
+-00.2
+-00.3
+-00.4
+-00.7
+-01.0-[0000:01]----00.0
+-0f.0
+-10.0
+-10.1
+-10.2
+-10.4
+-11.0
+-11.7
+-13.0
\-13.1-[0000:02]----08.0
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