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    SubjectRe: wifi iwlagn fails to authenticate after wake from suspend
    Date
    On 12/12/2011 09:48 AM, wwguy wrote:
    > On Sun, 2011-12-11 at 22:36 -0800, Matías Aguirre wrote:
    >> Hi,
    >>
    >> On Sat, Oct 29, 2011 at 2:32 AM, Gene Smith<gds@chartertn.net> wrote:
    >>> David Rientjes wrote, On 10/26/2011 02:27 AM:
    >>>> So we need to bisect between 2.4.38 and 3.0.0? :) I'm running ubuntu
    >>>> 11.10 on a home laptop so I'll give this a try as well when I can if I can
    >>>> put up with unity for that long.
    >>
    >> I've bisected the problem and narrowed the bug to changeset 73b78a2272
    >> (http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=73b78a22720087d2d384bdd49e9c25500ba73edd).
    >>
    >> Here's a patch, that applies against 3.2-rc5, that fixed the error for me:
    >>
    >> diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c
    >> b/drivers/net/wireless/iwlwifi/iwl-agn.c
    >> index bacc06c..01d5d38 100644
    >> --- a/drivers/net/wireless/iwlwifi/iwl-agn.c
    >> +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
    >> @@ -1297,7 +1297,7 @@ int iwl_alive_start(struct iwl_priv *priv)
    >> BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
    >> if (ret)
    >> return ret;
    >> - } else {
    >> + } else if (priv->cfg->bt_params) {
    >> /*
    >> * default is 2-wire BT coexexistence support
    >> */
    > this is not right, you stop the bt coex for non-combo device.
    > maybe you system has issue with BT, we seen this happen on some cases.
    > try the following module parameter and see if help
    >
    > $sudo modprobe iwlagn bt_coex_active=0
    >
    > Thanks
    > Wey
    >

    Unfortunately the latest fedora 16 kernel, 3.1.6-1.fc16.x86_64, renders
    this fix
    ineffective and again cannot resume wifi after a sleep and must reboot.
    Therefore must stay with older kernels for this to work and for wifi to
    resume
    after sleep:
    3.1.5-6.fc16 is still OK with bt_coex_active=0
    3.1.5-2.fc16 is also still OK with this fix.




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