143698 2006-08-12 10:52 0000 sys-apps/baselayout-1.12.4-r2 wireless regression: madwifi ap association 2006-12-14 17:15:09 0000 1 1 1 Unclassified Gentoo Linux baselayout 2006.0 x86 Linux RESOLVED UPSTREAM P2 normal --- 1 earny@net4u.de uberlord@gentoo.org cbm@m.fsf.org johnsonnenschein@gmail.com mobile@gentoo.org earny@net4u.de 2006-08-12 10:52:04 0000 First of all: No problems with sys-apps/baselayout-1.11.15-r3. At any time i can do an halso:~ # ifconfig ath0 up && sleep 1 && iwconfig ath0 essid net4u2 && sleep 5 && dhcpcd ath0 and the network is up. Kernel: 2.6.18-rc4 (vanilla) madwifi: Latest svn (Rev: 1704 at the moment) net-wireless/wireless-tools-29_pre10 /etc/conf.d/net: config_ath0=( "dhcp" ) dhcpcd_ath0="-t 30 -h halsowa" sleep_scan_ath0="10" sleep_associate_ath0="20" preferred_aps=( "net4u2" "mocisoft" ) associate_order="preferedonly" halso:~ # /etc/init.d/net.ath0 start * Caching service dependencies ...[ ok ] * Starting ath0 * Loading networking modules for ath0 * modules: apipa arping bridge ccwgroup tuntap macchanger macnet rename iwconfig essidnet iptunnel iproute2 pppd system vlan dhcpcd ip6to4 * iwconfig provides wireless * iproute2 provides interface * pppd provides ppp * dhcpcd provides dhcp * Configuring ath0 for MAC address 00:05:4E:47:C0:D5 ...[ ok ] * Configuring wireless network for ath0 * Scanning for access points * Found "net4u2" at 00:0F:3D:09:CF:27 (managed) * Found "WLAN" at 00:12:BF:57:76:91 (managed, encrypted) * Connecting to "net4u2" in managed mode (WEP Disabled) ... [ !! ] * Couldn't associate with any access points on ath0 * Failed to configure wireless for ath0 [ !! ] To debug i have patched iwconfig.sh : halso:/lib/rcscripts/net # diff -u iwconfig.sh.orig iwconfig.sh --- iwconfig.sh.orig 2006-08-12 17:48:03.000000000 +0200 +++ iwconfig.sh 2006-08-12 17:50:40.000000000 +0200 @@ -7,15 +7,19 @@ # Fix any potential localisation problems # Note that LC_ALL trumps LC_anything_else according to locale(7) iwconfig() { + logger -t iwsh "iwconfig $@" LC_ALL=C /sbin/iwconfig "$@" } iwgetid() { + logger -t iwsh "iwgetid $@" LC_ALL=C /sbin/iwgetid "$@" } iwlist() { + logger -t iwsh "iwlist $@" LC_ALL=C /sbin/iwlist "$@" } iwpriv() { + logger -t iwsh "iwpriv $@" LC_ALL=C /sbin/iwpriv "$@" } Result: Aug 12 18:42:38 halso iwsh: iwconfig ath0 txpower auto Aug 12 18:42:38 halso iwsh: iwconfig ath0 rate auto Aug 12 18:42:38 halso iwsh: iwconfig ath0 rts auto Aug 12 18:42:38 halso iwsh: iwconfig ath0 frag auto Aug 12 18:42:38 halso iwsh: iwconfig ath0 Aug 12 18:42:38 halso iwsh: iwconfig ath0 essid any Aug 12 18:42:48 halso iwsh: iwlist ath0 scan Aug 12 18:42:48 halso iwsh: iwgetid --mode ath0 Aug 12 18:42:48 halso iwsh: iwconfig ath0 key off Aug 12 18:42:48 halso iwsh: iwconfig ath0 freq 2.412 GHz (Channel 1) Aug 12 18:42:48 halso iwsh: iwconfig ath0 ap 00:0F:3D:09:CF:27 Aug 12 18:42:48 halso iwsh: iwconfig ath0 essid net4u2 Aug 12 18:43:09 halso rc-scripts: Couldn't associate with any access points on ath0 Aug 12 18:43:09 halso rc-scripts: Failed to configure wireless for ath0 Aug 12 18:43:09 halso iwsh: iwconfig ath0 txpower auto Aug 12 18:43:09 halso iwsh: iwconfig ath0 rate auto Aug 12 18:43:09 halso iwsh: iwconfig ath0 rts auto Aug 12 18:43:09 halso iwsh: iwconfig ath0 frag auto Aug 12 18:43:09 halso iwsh: iwconfig ath0 txpower off Yes, there is a bug: "iwconfig ath0 freq 2.412 GHz (Channel 1)" but that is not the problem. If i comment out that line the problem still exists. cat /sys/class/net/ath0/carrier works, will be "1" if association succeeds. Looks like a racecondition, if i execute the logged commands by hand, the association works.... A "watch --interval 1 iwconfig ath0" shows that sometimes the card associates to the ap during scan. But this association drops immediatly, if the scripts calls iwlist ath0 scan (or one of the commands direct behind), and will never come back. I can see the freq changes, it stops at 2.412GHz, but not accociated. Now i'm lost. Some ideas? earny@net4u.de 2006-08-12 10:57:01 0000 Created an attachment (id=94078) emerge --info toralf.foerster@gmx.de 2006-08-12 13:05:14 0000 What's about creating a similar entry (!net.wlan0) in /etc/conf.d/net as described here : https://bugs.gentoo.org/show_bug.cgi?id=143666#add_comment cbm@m.fsf.org 2006-08-12 19:59:45 0000 I think I'm seeing this too. I'm using madwifi-ng-0.9.2 and baselayout-1.12.4-r2. my /etc/conf.d/wireless: key_atropa="xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xx enc open" dhcpcd_atropa="-t 16" config_atropa=( "dhcp" ) #dhcpcd_ath0="-t 16" #config_ath0="dhcp" preferred_aps=( "atropa" ) associate_order="preferredonly" results in: aconite conf.d # /etc/init.d/net.ath0 restart * Starting ath0 * Configuring wireless network for ath0 * Couldn't associate with any access points on ath0 * Failed to configure wireless for ath0 But everything in iwconfig ath0 looks setup correctly. I can manually "dhcpcd ath0" and it connects (in other words, essid, WEP key etc are setup correctly by the baselayout script). Its just the baselayout script that won't connect to an AP, everything works if I do it manually. I don't really understand Comment #2's reference to bug #143666 because this doesn't seem to be anything to do with *PLUG... But just in case: aconite conf.d # grep -e ^RC_COLD -e ^RC_HOT -e ^RC_PL /etc/conf.d/rc RC_HOTPLUG="no" RC_COLDPLUG="no" RC_PLUG_SERVICES="" emerge info: Portage 2.1.1_pre4-r4 (default-linux/x86/2006.0, gcc-4.1.1/vanilla, glibc-2.4-r3, 2.6.17.8 i686) ================================================================= System uname: 2.6.17.8 i686 AMD Athlon(tm) Processor Gentoo Base System version 1.12.4 Last Sync: Fri, 11 Aug 2006 18:30:08 +0000 distcc 2.18.3 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [enabled] app-admin/eselect-compiler: 2.0.0_rc2-r1 dev-lang/python: 2.4.3-r1 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: [Not Present] dev-util/confcache: [Not Present] sys-apps/sandbox: 1.2.18.1 sys-devel/autoconf: 2.13, 2.60 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2 sys-devel/binutils: 2.17 sys-devel/gcc-config: 2.0.0_rc1 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.17 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-march=i686 -O2 -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/lib/globus-2.4/etc /usr/lib/mozilla/defaults/pref /usr/share/X11/xkb /usr/share/config" CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/eselect/compiler /etc/gconf /etc/java-config/vms/ /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c" CXXFLAGS="-march=i686 -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig collision-protection distcc distlocks metadata-transfer sandbox sfperms strict userpriv usersandbox" GENTOO_MIRRORS="http://gentoo.mirrors.easynews.com/linux/gentoo/ http://gentoo.chem.wisc.edu/gentoo/ ftp://gentoo.mirrors.tds.net/gentoo ftp://194.117.143.71/mirrors/gentoo" LINGUAS="" MAKEOPTS="-j1" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude='/distfiles' --exclude='/local' --exclude='/packages'" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage /usr/local/ag-portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="x86 3dnow X Xaw3d a52 aac aalib acpi alsa apache2 apm arts audiofile avahi avi berkdb bitmap-fonts bzip2 cairo cdr cjk cli crypt cups curl dbus dga dlloader dri dts dv dvb dvd dvdr eds elibc_glibc emacs emboss encode esd exif expat f77 faad fbcon ffmpeg fftw flac fortran gcj gd gdbm gif gimpprint ginac glut gmp gnome gnustep gnutls gphoto2 gpm gstreamer gtk gtk2 gtkhtml hal idn imagemagick imlib input_devices_evdev input_devices_keyboard input_devices_mouse isdnlog jack java jpeg kernel_linux lcms leim libcaca libg++ libwww lirc lirc_devices_realmagic live mad matroska mikmod mmx mng mono motif mozilla mp3 mpeg mysql nas ncurses nls nptl offensive ogg openal opengl oss pam pcre pdf pdflib perl plotutils png ppds pppd python qhull qt3 quicktime radeon readline reflection rtc samba scanner sdk sdl session slang speex spell spl sqlite sse ssl svg tcl tcltk tcpd tetex theora threads tiff tk truetype truetype-fonts type1-fonts udev unicode usb userland_GNU v4l v4l2 vcd video_cards_fbdev video_cards_i810 video_cards_mach64 video_cards_radeon video_cards_v4l video_cards_vesa video_cards_vga vorbis wmf wxwindows xinerama xml xmms xorg xosd xprint xv xvid zlib" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, PORTAGE_RSYNC_EXTRA_OPTS uberlord@gentoo.org 2006-08-13 03:04:53 0000 Does it work again if you comment out lines 296 - 299 in /lib/rcscripts/net/iwconfig.sh ? Also, some please attach the full output of "iwlist ath0 scan" please uberlord@gentoo.org 2006-08-13 07:48:17 0000 Created an attachment (id=94150) Fix frequency detection This should fix the "iwconfig ath0 freq 2.412 GHz (Channel 1)" bug as described above. Please test and report back. I have a madwifi card, but it powers my AP. I'll see if I can replicate it in the week when I can get a keyboard and screen to it, otherwise I'll happily review any patches that come in. earny@net4u.de 2006-08-13 15:40:19 0000 Created an attachment (id=94182) if_down_up_hack.patch Ok, found it. The new baselayout misses two lines of code: @@ -486,6 +496,10 @@ esac done < <(iwlist "${iface}" scan 2>/dev/null) + # HUP the interface as some drivers/cards need it + interface_down ${iface} + interface_up ${iface} + if ${error}; then ewarn "${iface} does not support scanning" x="adhoc_essid_${ifvar}" It is of curse a dirty hack, but madwifi need it. Try something like this: ~# iwlist ath0 scan ; iwconfig ath0 essid net4u2 with an up interface (assiociated or not). That will sussessful stop any assiociation and will _not_ reassiociate to any ap. There is a problem in the madwifi-driver... maybe this one?: http://madwifi.org/changeset/1665 Another problem, that is hidden with this down/up hack: Before scanning the script does: # Set the essid to any. This is required for scanning iwconfig "${iface}" essid any veinfo "Scanning for access points" Now the essid is any, an if you have a longer scan_time set the card may already associate to the ap ANY during the scan sleep;) If the scan is finished, the script sets the essid and checks immediatly for a valid association. This is racy: Sometimes he finds the old one, and then the rest of the script is a little bit confused.... It wold be a good idea to inhibit a association during scan (but how?). The call to preassociate() is maybe also wrong: It is called after iwconfig "${iface}" essid "${ESSID}" With a fast card (never have seen one :) the association may already has done. The patch in the attachment is including the freq-patch (yes, it works) uberlord@gentoo.org 2006-08-13 15:55:15 0000 (In reply to comment #6) > Created an attachment (id=94182) [edit] > if_down_up_hack.patch > > Ok, found it. The new baselayout misses two lines of code: > > @@ -486,6 +496,10 @@ > esac > done < <(iwlist "${iface}" scan 2>/dev/null) > > + # HUP the interface as some drivers/cards need it > + interface_down ${iface} > + interface_up ${iface} > + > if ${error}; then > ewarn "${iface} does not support scanning" > x="adhoc_essid_${ifvar}" > > > It is of curse a dirty hack, but madwifi need it. The bad news is that whilst madwifi needs it, it breaks rt2500 and some versions of acx100. So that's not going to fly right now - it's going to have to be fixed upstream. >There is a problem in the madwifi-driver... maybe this one?: > >http://madwifi.org/changeset/1665 That patch is in 0.9.2 - or are you saying this breaks it? > Another problem, that is hidden with this down/up hack: > > Before scanning the script does: > > # Set the essid to any. This is required for scanning > iwconfig "${iface}" essid any > > veinfo "Scanning for access points" > > Now the essid is any, an if you have a longer scan_time set the card may > already associate to the ap ANY during the scan sleep;) Again, that is something that most other drivers require - as the essid has to be set to ANY or they will not rescan successfully and just use the last scan list prior to association. earny@net4u.de 2006-08-13 16:29:59 0000 (In reply to comment #7) > >http://madwifi.org/changeset/1665 > > That patch is in 0.9.2 - or are you saying this breaks it? > No, i had tried r1663 - r1665, the problem is the same. But the comment states, that there are still problems;) And yes, i dont like the down/up-hack. If someone can confirm the weird behavior of the madwifi driver after scan a bugreport upstream is the right bug fix. > > Again, that is something that most other drivers require - as the essid has to > be set to ANY or they will not rescan successfully and just use the last scan > list prior to association. > The easiest way to fix this is in iwconfig_wait_for_association(). Reverse the lines: while true; do iwconfig_test_associated "${iface}" && return 0 sleep 1 and the race is almost gone. (wait for at least 1sec) cbm@m.fsf.org 2006-08-13 18:05:59 0000 As per comment #4, commenting out the "# Use sysfs if we can" block of code had no effect, still doesn't work. aconite ~ # iwlist ath0 scan ath0 Scan completed : Cell 01 - Address: 00:0C:41:1A:82:A0 ESSID:"REDSCAPE1" Mode:Master Frequency:2.437 GHz (Channel 6) Quality=24/94 Signal level=-71 dBm Noise level=-95 dBm Encryption key:on Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s Extra:bcn_int=100 Cell 02 - Address: 00:14:BF:38:CA:3B ESSID:"atropa" Mode:Master Frequency:2.462 GHz (Channel 11) Quality=38/94 Signal level=-57 dBm Noise level=-95 dBm Encryption key:on Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s 24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s 12 Mb/s; 48 Mb/s Extra:bcn_int=100 Cell 03 - Address: 00:0F:3D:BB:46:70 ESSID:"martin" Mode:Master Frequency:2.437 GHz (Channel 6) Quality=1/94 Signal level=-94 dBm Noise level=-95 dBm Encryption key:on Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s Extra:bcn_int=100 Re comment #5: I don't see the channel bug so I can't test. Re comment #6: I can confirm this: ~# iwlist ath0 scan ; iwconfig ath0 essid atropa causes it to not associate with my AP Also, the up/down "fix" indeed works for me, will use that until something better comes along. Re comment #8: switching the sleep 1 and the iwconfig_test_... line doesn't fix anything for me. uberlord@gentoo.org 2006-08-14 00:03:27 0000 Does this help any? Place it in /etc/conf.d/net preup() { if [[ ${IFACE} == "ath0" ]] ; then # Some atheros cards need an extra up # NOTE: the card is upped a few times anyway, so this *should* be redundant interface_up "${IFACE}" # Maybe give it time to settle sleep 2 fi } gentoo@schirmeier.com 2006-08-14 03:36:02 0000 I see similar behaviour since the update to baselayout-1.12.4-r2 (updating to -r3 did not change this); the preup() function (comment #10) does not help at all. * Starting ath0 * Running preup function [ ok ] * Starting wpa_supplicant on ath0 ... [ ok ] * Starting wpa_cli on ath0 ... [ ok ] * Failed to configure ath0 in the background [ !! ] Running 'dhcpcd ath0' afterwards makes everything work. /etc/conf.d/net: modules=( "wpa_supplicant" ) wpa_supplicant_ath0="-Dmadwifi" wpa_timeout_ath0=60 config_eth0=( "192.168.0.1" ) config_ath0=( "dhcp" ) dhcp_eth0="release nontp" dhcp_ath0="release nontp" preup() { [omitted] } /etc/conf.d/wireless: essid_ath0="xxx" channel_ath0="9" sleep_scan_ath0="1" associate_timeout_ath0="30" uberlord@gentoo.org 2006-08-14 06:36:33 0000 (In reply to comment #11) > I see similar behaviour since the update to baselayout-1.12.4-r2 (updating to > -r3 did not change this); the preup() function (comment #10) does not help at > all. > > * Starting ath0 > * Running preup function [ ok ] > * Starting wpa_supplicant on ath0 ... [ ok ] > * Starting wpa_cli on ath0 ... [ ok ] > * Failed to configure ath0 in the background [ !! ] Totatlly unrelated as this bug is about using iwconfig and your error is with wpa_supplicant. cbm@m.fsf.org 2006-08-14 10:24:09 0000 Upgrade to baselayout-1.12.4-r3 didn't help. Comment #10: yes, adding that preup seems to make it work: aconite conf.d # /etc/init.d/net.ath0 restart * Stopping ath0 * Bringing down ath0 * Stopping dhcpcd on ath0 ... [ ok ] * Shutting down ath0 ... [ ok ] * Starting ath0 * Running preup function [ ok ] * Configuring wireless network for ath0 * ath0 connected to ESSID "atropa" at 00:14:BF:38:CA:3B * in managed mode on channel 11 (WEP enabled - open) * Bringing up ath0 * dhcp * Running dhcpcd ... Info, MAC address = 00:0f:3d:e1:1b:46 Debug, broadcasting DHCP_REQUEST for 192.168.0.200 Debug, broadcastAddr option is missing in DHCP server response. Assuming 192.168.0.255 Debug, dhcpIPaddrLeaseTime=4294967295 in DHCP server response. Debug, dhcpT1value is missing in DHCP server response. Assuming 2147483647 sec Debug, dhcpT2value is missing in DHCP server response. Assuming 3758096383 sec Debug, DHCP_ACK received from (192.168.0.1) Debug, broadcasting ARPOP_REQUEST for 192.168.0.200 Info, verified 192.168.0.200 address is not in use Info, your IP address = 192.168.0.200 Debug, orig hostname = aconite Debug, about to exec "/etc/dhcpc/dhcpcd.exe /var/lib/dhcpc/dhcpcd-ath0.info up" [ ok ] * ath0 received address 192.168.0.200/24 Is there still an issue here to report upstream? uberlord@gentoo.org 2006-08-14 10:42:47 0000 (In reply to comment #13) > Is there still an issue here to report upstream? Yes. The issue is that people have two similar issues with madwifi - one fix requires that preup code and the other requires that interface down/up hack. Some people need one or the other - I know of one person who requires both. The odd thing is that my atheros based (early card works quite happily without either, so I'm guessing that it's a driver/hardware issue. FWIW it's a NetGear WG311v1 - Atheros Communications, Inc. AR5212 802.11abg NIC (rev 01) Someone should report this upstream and reference it here. I'd appreciate that as my card is also my AP in a headless server making testing/debugging difficult at best - also I don't seem to suffer from the bug. cbm@m.fsf.org 2006-08-14 11:44:47 0000 Ok, I submitted this ticket to upstream madwifi: http://madwifi.org/ticket/823 Anyone who understands the issue more than I, please post relevant info there. uberlord@gentoo.org 2006-08-14 12:23:33 0000 (In reply to comment #15) > Ok, I submitted this ticket to upstream madwifi: > http://madwifi.org/ticket/823 Thanks. I'm going to close this bug as upstream. Re-open / comment if upstream changes status on it. BTW, don't emerge dhcpcd with the debug USE flag - it won't actually work as a dhcp client ;) earny@net4u.de 2006-08-14 12:35:55 0000 Here in the office i can't reproduce it with the gentoo scripts, they just work... So maybe the problem depends on the ap's flying around in the air. But then 'upstream bug' still exists: halso:~ # ifconfig ath0 up halso:~ # iwlist ath0 scan; sleep 4; iwconfig ath0 essid mocisoft ath0 Scan completed : Cell 01 - Address: 00:0F:3D:AC:82:9F ESSID:"mocisoft" Mode:Master Frequency:2.412 GHz (Channel 1) Quality=33/94 Signal level=-62 dBm Noise level=-95 dBm Encryption key:off Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s 12 Mb/s; 24 Mb/s; 36 Mb/s; 9 Mb/s; 18 Mb/s 48 Mb/s; 54 Mb/s Extra:bcn_int=100 halso:~ # iwevents: (-- if up --) 21:21:06.182749 ath0 New Access Point/Cell address:00:0F:3D:AC:82:9F 21:21:17.643102 ath0 Scan request completed (-- scan / essid --) 21:21:34.540935 ath0 New Access Point/Cell address:Not-Associated 21:21:34.541310 ath0 Set ESSID:"mocisoft" halso:~ # cat /sys/class/net/ath0/carrier 0 -------------------------- But! halso:~ # ifconfig ath0 up halso:~ # iwconfig ath0 essid does_not_exists halso:~ # iwlist ath0 scan; iwconfig ath0 essid mocisoft ath0 Scan completed : Cell 01 - Address: 00:0F:3D:AC:82:9F ESSID:"mocisoft" Mode:Master Frequency:2.412 GHz (Channel 1) Quality=40/94 Signal level=-55 dBm Noise level=-95 dBm Encryption key:off Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s 12 Mb/s; 24 Mb/s; 36 Mb/s; 9 Mb/s; 18 Mb/s 48 Mb/s; 54 Mb/s Extra:bcn_int=100 halso:~ # cat /sys/class/net/ath0/carrier 1 iwevents: 21:25:56.956566 ath0 New Access Point/Cell address:Not-Associated 21:25:56.956956 ath0 Set ESSID:"does_not_exists" 21:26:16.521428 ath0 Set ESSID:"mocisoft" 21:26:17.896819 ath0 Scan request completed 21:26:17.902447 ath0 New Access Point/Cell address:00:0F:3D:AC:82:9F Will try later @ home again.... cbm@m.fsf.org 2006-08-14 13:14:35 0000 Re comment #16: I don't have debug USE flag on, I just pass -d to dhcpcd in (dhcpcd_atropa="-d -t 16"). Its a habit I got into on my laptop trying to connect to weak APs: I can see whats going on a bit better instead of just waiting for it to timeout. I don't think its affects dhcpcd's functionality. Re comment #17: Is sleep 4 your limit between working and not working? Setting the essid to something nonexistant has no effect for me. It still works or fails depending on weather I use < 1.9 or > 1.9 earny@net4u.de 2006-08-14 13:57:27 0000 > > Re comment #17: Is sleep 4 your limit between working and not working? > Setting the essid to something nonexistant has no effect for me. It still > works or fails depending on weather I use < 1.9 or > 1.9 > A scripts says more than thousands words :-) halso:~ # ifconfig ath0 up halso:~ # iwlist ath0 scan | grep ESSID; sleep 10; iwconfig ath0 essid mocisoft ; sleep 1 ; echo "carrier: $(</sys/class/net/ath0/carrier)"; sleep 20; echo "carrier: $(</sys/class/net/ath0/carrier)" ESSID:"mocisoft" carrier: 0 carrier: 0 halso:~ # iwlist ath0 scan | grep ESSID; sleep 11; iwconfig ath0 essid mocisoft ; sleep 1 ; echo "carrier: $(</sys/class/net/ath0/carrier)"; sleep 20; echo "carrier: $(</sys/class/net/ath0/carrier)" ESSID:"mocisoft" carrier: 1 carrier: 1 halso:~ # iwconfig ath0 essid xyz; sleep 1 ; iwlist ath0 scan | grep ESSID; iwconfig ath0 essid mocisoft ; sleep 1 ; echo "carrier: $(</sys/class/net/ath0/carrier)"; sleep 20; echo "carrier: $(</sys/class/net/ath0/carrier)" ESSID:"mocisoft" carrier: 0 carrier: 1 earny@net4u.de 2006-08-14 14:11:14 0000 Ups: It is a IBM Thinkpad R50p, 02:02.0 Ethernet controller: Atheros Communications, Inc. AR5212 802.11abg NIC (rev 01) earny@net4u.de 2006-08-15 09:07:55 0000 Created an attachment (id=94330) madwifi_preempt_scan_remove.patch (In reply to comment #17) > Here in the office i can't reproduce it with the gentoo scripts, they just > work... > So maybe the problem depends on the ap's flying around in the air. This ist complety _wrong_. The fix is http://madwifi.org/ticket/776 Try to reboot after applying the patch, un/load the modules may not fix it ;) Attached the shortes patch found to resolve the gentoo-script problem. cbm@m.fsf.org 2006-08-16 09:22:33 0000 Comment #21: removing preempt_scan does seem to avoid/fix the problem, will report upstream. cbm@m.fsf.org 2006-08-16 09:27:33 0000 Hmmm on second thought, while removing preempt_scan does seem to fix the gentoo issue in this bug, it doesn't seem to have any effect on my upstream but at http://madwifi.org/ticket/823. Maybe these are two seperate issues. uberlord@gentoo.org 2006-08-16 09:36:35 0000 (In reply to comment #23) > Hmmm on second thought, while removing preempt_scan does seem to fix the gentoo > issue in this bug If someone else can confirm that then I'll look at patching the ebuild uberlord@gentoo.org 2006-08-22 23:55:21 0000 *** Bug 144811 has been marked as a duplicate of this bug. *** 94078 2006-08-12 10:57 0000 emerge --info emerge-info.txt text/plain R2VudG9vIEJhc2UgU3lzdGVtIHZlcnNpb24gMS4xMi40ClBvcnRhZ2UgMi4xLXIyIChkZWZhdWx0 LWxpbnV4L3g4Ni8yMDA2LjAsIGdjYy0zLjQuNiwgZ2xpYmMtMi4zLjYtcjQsIDIuNi4xOC1yYzQg aTY4NikKPT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT0KU3lzdGVtIHVuYW1lOiAyLjYuMTgtcmM0IGk2ODYgSW50ZWwoUikgUGVu dGl1bShSKSBNIHByb2Nlc3NvciAxNzAwTUh6CmNjYWNoZSB2ZXJzaW9uIDIuMyBbZW5hYmxlZF0K YXBwLWFkbWluL2VzZWxlY3QtY29tcGlsZXI6IFtOb3QgUHJlc2VudF0KZGV2LWxhbmcvcHl0aG9u OiAgICAgMi40LjMtcjEKZGV2LXB5dGhvbi9weWNyeXB0bzogMi4wLjEtcjUKZGV2LXV0aWwvY2Nh 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