[Bug 299641] [NEW] atheros wifi doesn't work when resuming after suspend-to-memory

[Jakob Lund]

Public bug reported:

In Intrepid [kernel 2.6.27-8-generic], my wireless card [Ethernet
controller: Atheros Communications Inc. AR2413 802.11bg NIC (rev 01)]
will not work after suspending the laptop.

It will not work after restarting NetworkManager either (with sudo
/etc/init.d/NetworkManager restart). It WILL work after removing and
then inserting the drivers (with sudo rmmod ath5k ath_pci; sudo modprobe
ath_pci; sudo modprobe ath5k).

At some point (after updating to intrepid, but before doing a dist-
upgrade sometime last week) the resume operation worked. The dist-
upgrade did update the kernel and drivers, but selecting the previous
kernel version from the GRUB boot menu did not prevent the problem from
happening, so I'm not sure exactly which package update introduced the
error. Like I said, I can make the card work by modprobe'ing, so the
problem must be with the state of the driver after resume, that's why I
post it with linux-backports-modules.

Any info that I can provide that could clarify what happens? I glanced
over /var/log/messages, but things looked kind of normal in there -- I
guess this bit (from dmesg output) describes the failure:

[ 4855.524048] pci 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 4855.524054] pci 0000:00:02.0: setting latency timer to 64
[ 4855.525685] PM: resume devices took 2.316 seconds
[ 4855.525719] PM: Finishing wakeup.
[ 4855.525722] Restarting tasks ... done.
[ 4862.193366] eth0: link down
[ 4862.194066] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 4862.199840] ADDRCONF(NETDEV_UP): ath0: link is not ready
[ 5936.820585] eth0: link down
[ 5936.820954] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 5936.834492] ADDRCONF(NETDEV_UP): ath0: link is not ready

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New

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atheros wifi doesn't work when resuming after suspend-to-memory
https://bugs.launchpad.net/bugs/299641
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