WiFi vs suspend
pgf at laptop.org
Wed Sep 1 11:08:42 EDT 2010
> I have blundered into what may be a workaround for bug 10232
> The fix is to edit
> and add " -dddt" to the end of the Exec line. It ends up looking like:
> Exec=/usr/sbin/wpa_supplicant -c /etc/wpa_supplicant/wpa_supplicant.conf -B
> -u -f /var/log/wpa_supplicant.log -P /var/run/wpa_supplicant.pid -dddt
> [That's one long line that got wrapped.]
> After that change, I haven't had any hangs in over 24 hours. Without that
> change, I get one in a few hours.
is this still consistent for you?
> I'd be curious to see if it works for anybody else.
i've just released a new powerd-27 which contains a fix for XO-1 which
might affect whether power to the wlan is maintained in some cases,
and might also cause wake-on-wlan to be disabled by mistake.
in addition, i spotted a problem which i don't think we've yet seen,
but which might be an issue: the laptop sometimes wakes up for a very
short time, usually the result of a battery state change. if a
suspend happens very quickly after a resume, the wireless device may
not have been fully reinitialized yet, and ethtool will fail when
setting the wake-on-wlan options. since those options aren't sticky,
it may be that this causes options previously set to be lost. i
haven't yet tested to confirm this, but would welcome someone else
contriving such a test. (i'm doubtful that this is causing the problems
people are seeing currently, but one never knows.)
* Wed Sep 1 2010 Paul Fox <pgf at laptop.org>
- fix suspend-inhibit for the camera on XO-1.5 (broken in 26-1)
- fix no-keypress-wakeup blank-screen suspends
- make checks for external power more robust
- be more insistent about sync-before-suspend
- reduce default brightness to 12 (was 15, full bright)
- try not to assume wlan is eth0
> Don't forget that it doesn't wakeup on ARP packets so you have to manually
> setup the arp table entry on the machines that you expect to wake it up.
> These are my opinions, not necessarily my employer's. I hate spam.
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paul fox, pgf at laptop.org
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