On 09/03/2015 01:21 PM, Hazel Russman wrote:
On Thu, 03 Sep 2015 11:27:08 +0200
Simon Kitching<[email protected]> wrote:
Hi All,
I've been struggling with getting wireless working recently - finally
working.
One of the significant problems is that the BLFS book recommends
compiling wpa_supplicant with *two* back-ends enabled: "wext" and
"wired". Unfortunately, that means the "-D" option on the commandline is
mandatory; if omitted then wpa_supplicant just silently does nothing
(without any warning or error messages).
And some other files, eg systemd's "wpa_supplicant.service" or dhcpcd's
wpa_supplicant hook-script, do not specify a -D option (presumably they
assume that only the wext back-end is compiled in).
I'm surprised nobody else has had problems with this. Maybe a warning in
the BLFS book would be a good idea?
Regards,
Simon
--
I have just checked on my laptop (lfs-systemd 7.6). ps -ax|grep wpa shows that
wpa is running without the -D option. Nevertheless I am online and can ping
sites. The supplicant daemon was launched [email protected]. There is
no driver option mentioned in the wpa_supplicant.service file either, but
wpa_supplicant-wired.service does specify -Dwired. It looks like the book has
this covered.
I do think though that it would be a good idea to put a line in the book saying
that you *either* use the wpa_supplicant.service with dbus (if you're thinking
of installing Network Manager later) *or* [email protected]. I had a
lot of initial trouble getting on line because I enabled both of them and they
interfered with each other.
Thank you very much for testing on your system. Interesting that you're
not seeing the same behaviour as I am (lfs-systemd 7.7 + blfs being a
mix of 7.6-systemd and 7.7-sysv).
If you run "/sbin/wpa_supplicant --help", are there multiple entries in
the "driver" section of the output? I get:
drivers:
nl80211 = Linux nl80211/cfg80211
wext = Linux wireless extensions (generic)
wired = Wired Ethernet driver
And when running wpa_supplicant directly (with all other relevant
processes stopped), here is what happens:
# trying without "-D"
wpa_supplicant -i wlp3s0 -c /etc/wpa_supplicant/wpa_supplicant-wlp3s0.conf
Sep 03 13:40:23 t550-lfs kernel: iwlwifi 0000:03:00.0: L1 Enabled - LTR
Enabled
Sep 03 13:40:23 t550-lfs kernel: iwlwifi 0000:03:00.0: L1 Enabled - LTR
Enabled
Sep 03 13:40:23 t550-lfs kernel: IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link
is not ready
(then no more output)
# trying with "-D"
wpa_supplicant -i wlp3s0 -c
/etc/wpa_supplicant/wpa_supplicant-wlp3s0.conf -Dwext
Sep 03 13:41:07 t550-lfs kernel: iwlwifi 0000:03:00.0: L1 Enabled - LTR
Enabled
Sep 03 13:41:07 t550-lfs kernel: iwlwifi 0000:03:00.0: L1 Enabled - LTR
Enabled
Sep 03 13:41:07 t550-lfs kernel: IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link
is not ready
Sep 03 13:41:07 t550-lfs kernel: cfg80211: Calling CRDA for country: AT
Sep 03 13:41:08 t550-lfs kernel: cfg80211: Calling CRDA for country: AT
Sep 03 13:41:11 t550-lfs kernel: wlp3s0: authenticate with a0:f3:c1:f8:8e:c9
Sep 03 13:41:11 t550-lfs kernel: wlp3s0: send auth to a0:f3:c1:f8:8e:c9
(try 1/3)
Sep 03 13:41:11 t550-lfs kernel: wlp3s0: authenticated
Sep 03 13:41:11 t550-lfs kernel: wlp3s0: associate with
a0:f3:c1:f8:8e:c9 (try 1/3)
Sep 03 13:41:11 t550-lfs kernel: wlp3s0: RX AssocResp from
a0:f3:c1:f8:8e:c9 (capab=0x431 status=0 aid=1)
Sep 03 13:41:11 t550-lfs kernel: wlp3s0: associated
Sep 03 13:41:11 t550-lfs kernel: IPv6: ADDRCONF(NETDEV_CHANGE): wlp3s0:
link becomes ready
Regards,
Simon
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