/srv/irclogs.ubuntu.com/2010/04/05/#ubuntu-kernel.txt

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zbenjaminhi all15:40
zbenjamini have a problem with the iwlagn driver + 03:00.0 Network controller: Intel Corporation PRO/Wireless 5300 AGN [Shiloh] Network Connection15:41
zbenjamini cannot connect to the AP15:41
zbenjaminwith WPA215:41
zbenjamindmesg output http://pastebin.com/XqHTQArQ15:42
zbenjaminanyone can help with this?15:43
manjozbenjamin, why do you think it is a kernel problem ? 15:43
zbenjamini think its related to the driver15:44
zbenjaminalso i got redirected here from #kubuntu15:44
zbenjamini know the password is ok, windows can connect fine15:45
manjozbenjamin, it could be a network manager issue15:47
zbenjaminthe same problem when i use wpa_supplicant without network-manager same problem with wcid15:48
zbenjaminso i doubt its related to network manager15:48
manjozbenjamin, what version of Ubuntu are you using?15:49
manjokarmic ?15:49
zbenjaminkarmic , kernel Linux version 2.6.31-20-generic (buildd@crested) (gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu8) )15:49
zbenjamin64bit15:49
manjozbenjamin, kde ? 15:50
zbenjaminyes15:50
zbenjaminbut currently i try with wpa_supplicant directly15:50
zbenjamini could post wpa_supplicant output if that helps15:52
zbenjaminoh can this be the problem? Could not configure driver to use managed mode15:52
zbenjaminfrom wpa_supplicant15:52
manjozbenjamin, you should open a bug on this... but I know it is hard to do without working network :)15:54
cndzbenjamin: are you specifying the AP by mac address instead of SSID?15:55
cndif so, maybe try by ssid, since that's a more commonly used and tested scenario15:55
zbenjaminno i use SSID15:55
zbenjaminalso the AP is not hidden15:56
cndzbenjamin: ok, I've just not seen "direct probe to AP" messages before15:56
cndzbenjamin: can you try another router to test?15:56
zbenjamincnd: yeah this is a new message after i installed the backports-modules package15:56
cndsometimes there are strange interactions between specific drivers and routers15:56
cndwhich backports-modules?15:57
zbenjamincnd: i tried with other routers and it works, i also have exactly the same hw router at home and it works without a problem 15:57
zbenjaminsec15:57
cndzbenjamin: same security type too?15:57
zbenjaminlinux-backports-modules-karmic15:57
zbenjaminyes15:57
zbenjaminbut the router is not broken, i can connect to it from win without a problem15:58
cndzbenjamin: maybe this router has old firmware?15:58
zbenjaminyou think that could be a problem?15:58
cndzbenjamin: you may want to try the linux-backports-modules-wireless package15:58
zbenjaminargh 15:59
cndzbenjamin: fw could affect anything15:59
cndso yeah, I would ensure you are up to date on your router's fw15:59
zbenjamincould not find linux-backports-modules-wireless15:59
zbenjaminthis one? linux-backports-modules-wireless-karmic-generic16:00
manjoyes.16:00
zbenjamina reboot is enough?16:01
zbenjaminor do i have to disable some drivers?16:01
manjoreboot is fine 16:01
zbenjaminok bib16:01
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zbenjaminback16:08
zbenjamini get this in messages: [  230.810852] ADDRCONF(NETDEV_UP): wlan0: link is not ready16:08
zbenjaminand this in dmesg [  241.940662] wlan0: deauthenticating from 00:1a:2a:1a:fe:0c by local choice (reason=3)16:09
zbenjaminthat is totally weird16:09
manjoso you are not able to connect still ? 16:09
zbenjaminno16:10
zbenjaminnever had so much problems before16:10
zbenjaminwhats that: 16:12
zbenjaminwpa_driver_nl80211_set_key: alg=0 addr=0x470a3c key_idx=3 set_tx=0 seq_len=0 key_len=016:12
zbenjaminnl80211: set_key failed; err=-6716:12
manjodid this work previously ? 16:15
zbenjaminyes i was able to create connections to other APs 16:15
manjozbenjamin, I have a feeling this is network manager related 16:15
zbenjaminit cannot, i start wpa_supplicant by hand16:15
zbenjaminwpa_passphrase and stuff16:15
zbenjaminthat was the first thing i did, disable networkmanager16:16
zbenjaminhm if i use -Dwext on wpa_supplicant it cannot find a AP at all16:16
zbenjaminTry to find WPA-enabled AP16:17
zbenjaminTry to find non-WPA AP16:17
zbenjaminNo suitable AP found.16:17
zbenjaminsorry for the paste, i should use a pastebin 16:17
zbenjaminmanjo: any other ideas?16:22
manjozbenjamin, no. you should open a bug with all this info in it. 16:23
zbenjamin:(16:24
salgadocnd, load seems a bit high (load average: 2.04, 2.04, 1.92) but I can't find where that's coming from16:35
cndsalgado: it's probabaly a process stuck in a loop16:36
cndbear with me a moment16:36
salgadosure16:37
cndsalgado: do the following:16:37
cndsudo sh -x "echo function > /sys/kernel/debug/tracing/current_tracer"16:38
cndsit for a few seconds16:38
cndthen do:16:38
cndsudo sh -x "cat /sys/kernel/debug/tracing/trace > ~/trace"16:38
cndthen "bzip2 ~/trace"16:39
salgadosh: Can't open echo function > /sys/kernel/debug/tracing/current_tracer16:39
cndthen upload ~/trace.bz2 to lp16:39
cndsalgado: oops, I mean sh -c16:39
salgadodid that using sudo tee, though16:39
cndin both cases16:39
cndafter you cat trace, you can turn off tracing by echoing "nop" to current_tracer16:40
salgadook, uploading16:41
salgadocnd, http://launchpadlibrarian.net/43167185/trace.bz216:42
cndsalgado: how many cpus are in the system?16:45
salgadocnd, one cpu, 2 cores16:45
cndsalgado: I'm not sure why your load avg is high, but it doesn't look related to this bug16:46
cndthe trace doesn't show anything hung in a loop or anything related to graphics16:46
salgadocnd, it seems to be doing tons of interrupts (700/s) and even more context switches (1800/s)16:52
cndsalgado: I'm looking into mutex debugging right now, which will help us debug the core issue16:52
salgadook16:56
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salgadocnd, I need to step out for a bit, but I'll check back in 10 minutes or so, in case there's anything else I can do to help17:03
cndsalgado: probably nothing for a bit17:04
cndI'm still researching17:04
salgadook, cool17:04
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zbenjaminmanjo: it works, now guess what i have done17:05
manjo:) 17:05
manjoreinstalled network manager ? 17:05
zbenjaminNO removed the plug !!!! 17:06
zbenjaminusing the normal switch did not work17:07
zbenjamin!17:07
zbenjamini had to remove the power plug, and now it magically works 17:07
zbenjamintook me only 8 hours to find :)17:07
zbenjaminmanjo: strange that it worked for windows17:08
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manjoyou mean reboot the router ? 17:09
manjoor unplug the power cord from the laptop?17:09
zbenjaminrebooting was not enough, i had to remove the power chord from the router17:09
zbenjamini used the power switch before17:10
zbenjaminbut that did not help17:10
manjothat is a bit strange... 17:10
zbenjaminyes indeed17:10
zbenjaminwell maybe the router does only some suspend to ram thing who knows17:11
zbenjaminok i try to reconnect now lets see if it still works17:12
* zbenjamin hopes17:12
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zbenjaminmanjo: still works 17:15
manjozbenjamin, cheers! what router is that ? 17:16
zbenjaminits a Speedport W70017:16
zbenjaminyou get those from the t-online provider17:17
zbenjaminhttp://www.findix.com/data/adpix/picture_L/router-t-com-speedport-w-700-v-194121.jpg17:18
zbenjaminmanjo: but it still has to be a problem with the driver, as i said it worked on windows17:20
zbenjaminor the windows driver is aware of wrong behaviour from the router17:21
zbenjaminor more error tolerant17:21
cndzbenjamin: had you tried windows after linux wasn't working?17:35
zbenjamincnd: yep17:46
zbenjamincnd: worked without a problem17:46
cndzbenjamin: I don't know then, but consumer routers are fairly flaky17:47
cndit's always good to try rebooting them17:47
zbenjaminyeah well i tried to reboot it, using the power switch, but only removing the power chord fixed it17:48
zbenjaminanyway thx for help guys17:51
cndglad to see your issue got resolved :)17:51
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salgadocnd, is there any use in leaving the crashed laptop running or is it ok to restart it?17:59
cndsalgado: you can restart it17:59
salgadocool17:59
salgadoback in a bit17:59
cndhmmm... I'm getting errors on prepare-generic on the lucid sources, even after git clean -f -d, git reset --hard HEAD, and fdr clean18:05
cndapw, ogasawara any thoughts?18:05
ogasawaracnd: hrm, what's the exact error?18:06
cndogasawara: /home/cndougla/Canonical/ubuntu-lucid is not clean, please run 'make mrproper'18:07
jjohansencnd: run make mrproper and then do git checkout -f18:08
jjohansenthat happens with the kernel build system some times18:08
jjohansenespecially if you end up mixing fdr and regular kernel builds18:09
jjohansencnd: basically there are some files there that the build system is checking that git is ignoring so they don't show up in a git status18:10
cndjjohansen: ahhh, that makes sense18:10
jjohansenthe checkout -f will restore your debian directories etc that mrproper will destroy18:11
cndjjohansen: yep, it's working now, thanks!18:11
manjocnd it will be cool to doc that in the wiki 18:24
manjokernel mainintanence starter or so18:25
cndmanjo: yeah, I'll add it to my task list18:25
=== sconklin is now known as sconklin-lunch
salgadocnd, any news about that bug?  or can you think of anything I could try as a workaround meanwhile?  (it's happened two more times in the last 30 minutes...)19:32
cndsalgado: I'm building a debug kernel right now19:32
cndI'll probably have it ready for you within the hour19:33
cndI'll post in the bug when it's ready19:33
salgadocool.  I just hope the bug doesn't go away when I install the debug kernel. :)19:33
cndheh, it shouldn't, but you never know :)19:34
cndit would be a really nasty bug if that were the case19:34
=== sconklin-lunch is now known as sconklin
salgadocnd, http://people.canonical.com/545039/ is a 40420:55
cndsalgado: oops: http://people.canonical.com/~cndougla/54503920:56
salgadothat one works. :)20:57
salgadocnd, I'm now on the karmic kernel, as the Lucid one wasn't allowing me to get any work done.  luckily it will crash quickly once I switch to the new kernel you built20:58
cndok20:59
* salgado restarts21:01

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