Bug 84681

Summary:	No network after some S4 suspend/resume cycles
Product:	Drivers	Reporter:	Jens (jens-bugzilla.kernel.org)
Component:	Network	Assignee:	drivers_network (drivers_network)
Status:	NEW ---
Severity:	normal	CC:	imre.deak, mauromol, szg00000
Priority:	P1
Hardware:	x86-64
OS:	Linux
Kernel Version:	3.18-0rc6	Subsystem:
Regression:	No	Bisected commit-id:

Description Jens 2014-09-16 20:00:20 UTC

This is an addendum to Bug #59321 which got fixed.
Same hardware (Haswell step 2, i4570, MSI-7817 B85m mainboard.

Here's the challenge:
Occasionally (about every fifth time) when I do S4 suspend and resume cycle, after resuming I have no network, meaning the interface is not coming up again. 

This is the dmesg of a SUCCESSFUL resume with networking:

...
[  335.912525] PM: restore of devices complete after 764.543 msecs
[  335.912632] PM: Image restored successfully.
[  335.912644] PM: Basic memory bitmaps freed
[  335.912645] Restarting tasks ... 
[  335.912708] r8169 0000:02:00.0: no hotplug settings from platform
[  335.914229] done.
[  335.914233] video LNXVIDEO:00: Restoring backlight state
[  336.112423] r8169 0000:02:00.0 eth1: link down
[  336.112457] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[  336.112479] r8169 0000:02:00.0 eth1: link down
[  338.889059] r8169 0000:02:00.0 eth1: link up
[  338.889064] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
...

This is the dmesg of a FAILED resume, without networking:

...
[ 1083.025140] PM: restore of devices complete after 764.906 msecs
[ 1083.025263] PM: Image restored successfully.
[ 1083.025275] PM: Basic memory bitmaps freed
[ 1083.025277] Restarting tasks ... 
[ 1083.025350] r8169 0000:02:00.0: no hotplug settings from platform
[ 1083.032115] done.
[ 1083.032120] video LNXVIDEO:00: Restoring backlight state
...

If I do S4 again it usually works again.

What can I do to get this fixed? 
Thank you! :)

Comment 1 Jens 2014-11-28 09:39:34 UTC

Any news on this bug? It still happens with 3.18.0rc6 (a834a782adf3ab4b508cd80e9082960263bcc4ed), see also https://bugs.freedesktop.org/show_bug.cgi?id=82864.

Thank you!

Comment 2 Jens 2015-08-12 18:37:53 UTC

This still happens with 4.2 kernels, even after updating the BIOS to 10.9 and resetting all BIOS settings to default. How can I help debug this problem? It basically prevents us from using S4 suspend at all, since without networking, the computer is not really usable.

Thanks!