Hi: I have a thinkpad t43p with an ipw2200 driven piece of hardware in it.
04:02.0 Network controller [0280]:
Intel Corporation PRO/Wireless 2915ABG Network Connection [8086:4224] (rev 05)
Kernel driver in use: ipw2200
Kernel modules: ipw2200
From time to time, the firmware flakes out, and I get messages like this:
[ I'm not sure which version of the firmware I have, I can't see anything
obvious in dmesg when the ipw2200 module loads: I have files like
ipw-2.4-bss.fw in /lib/firmware if that helps ]
Jul 14 03:42:25 neko kernel:
ipw2200: Failed to send SCAN_ABORT: Command timed out.
Jul 14 03:42:26 neko kernel:
ipw2200: Failed to send CARD_DISABLE: Command timed out.
Jul 14 03:42:32 neko kernel:
ipw2200: Failed to send SCAN_ABORT: Command timed out.
Jul 14 03:42:33 neko kernel:
ipw2200: Failed to send CARD_DISABLE: Command timed out.
Jul 14 03:42:39 neko kernel:
ipw2200: Failed to send SCAN_ABORT: Command timed out.
repeated again and again.
There's usually a "firmware error detected, restarting" message buried
somewhere in the logs before that happens.
Under kernel 2.6.16, I was able to fix this as follows:
echo -n 3 > /sys/class/net/$IFACE/device/power/state
sleep 1
echo -n 0 > /sys/class/net/$IFACE/device/power/state
( removing and reloading the module has no effect here, under
either kernel 2.6.16 or 2.6.24: taking the interface down and
bringing it up again is likewise ineffective )
However, I note that under 2.6.24 said /sys interface is no
longer present, so once the firmware dies, I am forced to either
hunt down a network cable with something useful on the other end,
or live without networking, or reboot.
Is there a new way to achieve the same effect in 2.6.24? If there's not,
is there likely to be in the future? Or should I just revert to 2.6.16
until such time as I replace my laptop and (hopefully) don't have to
struggle with the intel wifi hardware any more?
The firmware bug is covered here:
http://www.intellinuxwireless.org/bugzilla/show_bug.cgi?id=875
if that's helpful/relevant.
[ CCd to netdev as I was told it would be of interest there too,
apologies if this is not the case ]
--
Vivek
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