/srv/irclogs.ubuntu.com/2011/02/15/#ubuntu-kernel.txt

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* apw yawns08:42
smbmorning08:43
jjohansenmorning08:44
apwmorning08:47
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AlanBellmorning all09:26
AlanBellI am investigating some clock drift issues in KVM guests, Ubuntu 10.04.1 server host, Ubuntu 10.10 server guest09:27
AlanBellthe host does support the constant_tsc cpu flag09:28
AlanBellI can't confirm that the guests are using it, dmesg | egrep "(tsc|TSC)" returns nothing09:29
AlanBellexpired bug 444531 may be relevant/similar09:29
ubot2Launchpad bug 444531 in kvm "Guest kernel can't read TSC frequency from the hypervisor" [Medium,Expired] https://launchpad.net/bugs/44453109:29
* apw notes the bug has expired09:31
AlanBellit has, also relates to Karmic, but it is the closest I could find09:33
AlanBell/sys/devices/system/clocksource/clocksource0/available_clocksource does contain "tsc hpet acpi_pm"09:34
hertonapw: kernel-buglist-by-team.html still unavailable correct?11:32
* apw has to run and supervise a plumber, will have my lappy with me11:54
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apwherton, seems so indeed ...13:19
apwJFo, the key bugs list is MIA13:19
tgardnerapw, are there mumble issues today?13:26
smbtgardner, I seem to be logged in13:27
smbstill13:27
tgardnerit hates me13:27
smbIt hates all of us... just differently13:27
hertontgardner, there was someone complaining to IS today about not being able to connect13:28
hertonbut I'm logged in ok too here13:29
tgardnersometimes there are single sign-on issues13:29
apwtgardner, i haven't had trouble, but not been paying much attention13:30
tgardnerwhat will I do if I can't talk to my homies all day?13:30
smbBe very productive. *slap*13:30
* apw pokes JFo 13:35
* JFo grumbles14:01
JFo:)14:01
JFomorning apw14:01
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JFoapw, finally had to change it back to EDGE14:12
JForunning now14:12
apw_ok sounds odd bit ...14:13
JFowell, I suspect the other may be caused by version issues maybe, but I am not sure.14:15
JFoI did everything they said to do and it continued to fail14:15
apw_hrm  ... odd indeed14:18
JFocould still be something I was doing wrong14:19
JFoin fact, that is most likely it14:19
JFoat any rate...14:19
JFoapw, it is up now14:20
JFoapologies for the delay14:21
tgardnerbjf[afk], sconklin: when do the verification-needed tags get applied?14:46
sconklintgardner: brad and I will do that today. We apply them after they are copied to -proposed. No real automation for that yet aside of a script that helps14:46
tgardnersconklin, ah, thanks.14:47
tgardnerjust going through my bug spew after moving stuff to -proposed14:47
sconklintgardner: I'm just about all spun up here again after a multi-hour power outage14:47
tgardnersconklin, hmm, sucks to be you. you've had some exceptionally bad weather this winter.14:48
sconklintgardner: two months of terrible weather, and the power goes out after three beautiful days with temps in the 60s. Go figure14:48
tgardnermaybe some drunk dufus smacked a power pole14:49
apwheh ... so very believeable15:00
=== herton is now known as herton_lunch
pmatuliswhat can we say about a process that causes /proc/vmallocinfo to grow without bounds?15:11
hernilHello people! I have a kernel-related bug as described here: http://ubuntuforums.org/showthread.php?p=10458430#post10458 Any tips? 15:16
bullgardJFo: I get a kernel error message similar to http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=495674&trim=no . What package should I associate my error report in Launchpad to?" (My question has not been answered in #ubuntu-bugs for > 8 hours.)15:23
ubot2Debian bug 495674 in alsa-utils "[udev] Driver 'pcspkr' is already registered, aborting..." [Minor,Open]15:23
* JFo looks15:24
JFobullgard, I would say udev as I seem to recall that we have a specific package for those15:25
bullgardJFo: Thank you very much for your help. I appreciate that.15:25
JFobullgard, my pleasure15:25
JFolet me know if you encounter issues15:25
hallynso are pulls from Linus' tree generally done on fridays, or is that in my head?15:26
JFohallyn, do you mean for mainline kernels?15:27
JFoor something else?15:27
hallynyeah15:27
hallynfor ubuntu-natty15:27
tgardnerhallyn, generally when we see something interesting, like a bug fix or an rc candidate15:27
JFoI think we pull them whenever we have an RC15:27
JFowhat tgardner said15:27
tgardnerhallyn, do you have something in mind?15:28
hallynmy patch is affected by a patch by cdub which isn't yet in ubuntu-natty.  I'll just do it against linux-2.6 for now then, thanks15:28
hallynwell, i don't care about his patch per se, i just don't want to re-rebase and then re-re-rebase to push to lkml :)15:28
tgardnerhallyn, we often rebase against an intermediate tip15:28
hernilHow can I add Nattys main repo to my maverick install to test Natty kernel? 15:28
=== bjf[afk] is now known as bjf
tgardnerhernil, use https://launchpad.net/~kernel-ppa/+archive/ppa15:29
hallynthe one pinching me is 47970b1b2aa64464bc0a9543e86361a622ae7c03 from last thursday.  15:29
tgardnerhallyn, that got reverted15:30
hallynoh?15:30
tgardnerhallyn, yep, but we have not uploaded a kernel with that revert in it yet15:30
hallynactually 6037b715d6fab139742c3df8851db4c82308156115:30
tgardnersee f00eaeea7a42b5ea327e9ce8839cb0b53d3bdb4e15:30
hallynhaha15:31
hallynbut, that only reverts the user15:31
tgardneris that not sufficient for you?15:31
hallynIt's the addition of struct cred arg to security_capable() that's chafing me15:31
hallynand that was not reverted15:31
tgardnerok, thats a different problem. you gonna make a patch for Linus ?15:32
hallynNo, I don't think they intend to revert that.  Rather probably find a different way to use it15:32
hallynSo my problem is just that I also add an argument to some of the same functions, so patches clash.  I was just trying to decide whether to wait for an ubuntu-natty tree update rather than have two patchsets15:33
tgardnerwell, it would only take me a few minutes to run a rebase.15:33
hallynduh.  i'll just cherrypick that patch for my ubuntu-natty tree15:33
tgardnerthat works too15:34
hallyntgardner: if it was something you were going to do soon anyway, sure - but I can cp it15:34
hallynI'm still too stressed from the drive to drop off the kids15:34
tgardner:) ok, gimme a few minutes.15:34
* hallyn isn't a commute kinda guy15:34
hallyngreat, thanks15:34
tgardnerhallyn, actually, it looks like apw has already rebased against tip.15:36
tgardnerUBUNTU: rebase to 795abaf1e4e188c4171e3cd3dbb11a9fcacaf50515:37
herniltgardner, thanks. And then what package do I install? :-) 15:37
hallyntgardner: hm, I had just fetched an hour ago, let me check15:38
tgardnerhernil, use one of the meta packages in linux-meta-lts-backport-natty, likely -generic15:38
tgardnerhernil, 'sudo apt-get install linux-image-generic-lts-backport-natty'15:39
hallyn<shrug>  not seeing it here - refetching15:39
herniltgardner, I think I'm unable to update the package list because of some problem with a ppa. Just keep getting this message: W: GPG error: http://ppa.launchpad.net maverick Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4B6DCB2258043CFF15:41
hernilW: GPG error: http://ppa.launchpad.net maverick Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 10975893E549B1AC15:41
bjf##15:42
bjf## Ubuntu Kernel Team Meeting - Today @ 17:00 UTC - #ubuntu-meeting15:42
bjf##      agenda: https://wiki.ubuntu.com/KernelTeam/Meeting15:42
bjf##15:42
tgardnerhernil, its just a warning that you can ignore. otherwise, see /Read about installing' in the PPA page.15:42
herniltgardner, I've added the ppa and done a sudo apt-get update, but can't find the package name you gave me =/ 15:44
tgardnerhernil, 'sudo apt-get install linux-image-generic-lts-backport-natty' doesn't work?15:45
herniltgardner, nope. E: Unable to locate package linux-image-generic-lts-backport-natty15:46
tgardnerhernil, how did you add the PPA source? a new file under /etc/apt/sources.d ?15:47
tgardner/etc/apt/sources.list.d15:47
herniltgardner, No, I used 'sudo add-apt-repository ppa:kernel-ppa/ppa'15:48
tgardnerhernil, then it likely gave you the wrong pocket, e.g., maverick instead of lucid15:48
herniltgardner, How do I fix that? I'm currently on a Maverick system. 15:49
tgardnerhernil, you'll have to edit /etc/apt/sources.list15:50
herniltgardner, The ppa you gave doesn't seem to have a maverick "version". In the technical details this is what it says: deb http://ppa.launchpad.net/kernel-ppa/ppa/ubuntu lucid main  deb-src http://ppa.launchpad.net/kernel-ppa/ppa/ubuntu lucid main 15:54
=== herton_lunch is now known as herton
tgardnerhernil, no, it'll have a lucid version. its the same source code but uses the lucid tools to compile the kernel. it ought to be fine.15:56
tgardnerhernil, what graphics chipset are you using? I remembered that X might not work for you in some cases with the backport.15:57
herniltgardner, there we go. Added them manually and it worked. I'll install 'linux-image-generic-lts-backport-natty'15:58
tgardnerits primarily intended for server enablement work15:58
herniltgarnder, I'm using a Dell laptop (Inspiron D531) nothing fancy. If I install this I will still have my current kernel in GRUB so I can boot en remove the new one if it doesn't work? 15:59
tgardnerhernil, yep.15:59
hernilThen I'll just go for it. My problem is trouble with my new SSDs performance with the current kernel. 16:00
hallyntgardner: I'm still not seeing any commit past Wed Feb 916:02
herniltgardner, will this give me the headers too? 16:03
tgardnerhernil, not unless you also install the headers package16:03
herniltgardner, do I need them? 16:03
herniltgardner, for now I just 'sudo apt-get install linux-image-generic-lts-backport-natty' 'ed16:04
tgardnerhallyn, are you using master-next ?16:04
hallynno16:04
tgardnerhernil, you shouldn't need the headers package.16:04
hallyntgardner: neat.  thanks16:04
herniltgardner, then I'll be right back. Rebooting to test! 16:05
tgardnerhallyn, thats where the most recent bits live.16:05
pmatuliswhat kernel are we getting with 10.04.2 ?16:25
tgardnerpmatulis, 2.6.32 ?16:25
herniltgardner, I got to boot, but it didn't really solve my problem. Could we continue with PMs?  16:25
smbtgardner, I was inclined to say the same. Guess he wants to know which subversion. sconklin may know16:26
pmatulistgardner: k, right.  but there will be option to install with lts backport16:26
tgardnerhernil, no PMs on a public forum. besides, I'm not sure I can help you with your SSD performance issues anyways. its kind of subject to the work load.16:27
tgardnerpmatulis, on the DVD16:27
pmatulissmb: yes, the subversion16:27
sconklinpmatulis: 2.6.32-28.55, same as is in updates now16:27
pmatulissconklin: ok16:27
tgardnerpmatulis, dunno, you'll have to ask skaet what ultimately ended up in the release16:27
herniltgardner, Okey :-) Is the kernel I tested now different from yesterdays natty daily-build? 16:28
pmatulissmb: i'm asking b/c i thought it might help with what i'm seeing.  .32 is giving me oom trouble with vsftpd stress test while lts-backport .35 is very fine16:28
tgardnerhernil, no, the pre-proposed natty kernel is the absolute bleeding edge. the backport tends to lag by a week or more.16:29
* smb is not sure he want to know what vsftp is16:30
herniltgardner, Okey. So if I wait for a week or so and update my system as normal I'd get the kernel I tested yesterday? 16:31
pmatulissmb: it's a very popular ftp daemon which is in main16:31
tgardnerhernil, its not deterministic, but yes, it'll eventually catch up16:32
pmatulissmb: /proc/vmallocinfo fills up until oom invoked (500 lines) but .35 test will never show more than 2 lines16:32
smbpmatulis, Oh, that was that very secure ftpd stuff. Hm, 16:33
pmatulissmb: will open bug but i thought i might ask in here first16:33
herniltgardner, Ok. Do you know if the bug I'm experiencing is official and fixed? Should I report somewhere? 16:34
pmatulissmb: why would vmallocinfo be so different in .35?16:34
apwpmatulis, you say it fills up, what does it fill up with16:34
apwmine has 169 on my laptop when quiet16:35
pmatulisapw: i will need to redo the test to get that16:35
apweach line give you a hint as to whome is to blame for the mapping16:35
tgardnerhernil, what bug? I'm not sure a slow device constitutes a bug. there is a large performance range difference between the various manufacturers.16:36
pmatulisapw: ok but no weird that just a different kernel will make things better?  can it sill be the application at fault?16:36
apwpmatulis, there would be some 60k changesets between the two kernels, so anything is possible16:37
herniltgardner, I guess it's a bug when the drive has expected performance in lucid and then goes down to normal HDD-speed with maverick? 16:37
apwJFo, about ?16:39
bjf##16:45
bjf## Kernel team meeting in 15 minutes16:45
bjf##16:45
tgardnerhernil, perhaps, but its an issue that'll have to be solved by the upstream developers.16:46
JFoapw, yessir16:47
apwJFo, have all of the regression-potentials on our key bugs list been reviewed now?16:47
JFothere shouldn't be any regression-potential16:48
herniltgardner, I see, but how do I make them aware of the problem? Could you point me in the right direction? :-) 16:48
JFoI still need to remove all regression-potential tags16:48
JFoas that is a deprecated tag now16:48
JFowait, do you mean regression-proposed apw ?16:49
apwyes, i keep saying that wrong, yes i mean proposed16:49
JFoI believe they should be.16:49
* JFo goes to look16:50
tgardnerhernil, you can send an email to LKML, but don't be surprised if you don't get a response. Do your homework on SSDs. There are some performance tricks that involve partition alignment depending on the device, etc.16:50
herniltgardner, I'm in no way knowledga 16:51
JFolooks like there is only one in our list, but it is the wrong status16:51
apwthere are two next to each other n the top table alone ?16:52
* JFo looks again16:52
herniltgardner, * I'm in no way knowledgeable when it comes to SSDs but I've done som research the last couple of days. Alignment was one of the things I got confirmed was all right :-)  16:52
JFoah, I needed to refresh :)16:53
tgardnerhernil, well then, you've surpassed my knowledge16:53
apwJFo, and i dee 5 at least in the incomplete table16:53
ckingI think the alignment should be automatically set to a fairly optimal state by the installer16:53
JFowell, the one that just appeared is brand new16:53
JFoas of an hour ago16:54
JFothe only ones I see are in incomplete without response16:54
JFoare those the ones you are referring to?16:54
apw717970UndecidedNewAfter sleep, key presses get lost and trackpad is jitteryregression-proposed16:54
apw719393UndecidedNewpackage linux-image-2.6.35-27-generic (not installed) failed to install/upgrade: corrupted filesystem tarfile - corrupted package archiveregression-proposed16:54
JForight, the second one is brand new16:55
apwJFo, and yes there are indeed a number under incomplete.  but we need to know they are -proposed truly16:55
JFoah right, 16:55
herniltgardner, thank's for all your help! I'll continue poking around and see if i get somewhere :-) 16:55
apwcause they should _all_ offiically be blockers to a -proposed to -updates shift16:55
JFoI agree16:55
apwand therefore they should be of interest to sconklin and bjf16:55
JFosorry, my mind was somewhere else16:56
apwand they need to be uptodate to be any use what so ever16:56
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apwJFo, hey ... there are regression-proposed bugs on natty ... they should be regression-release17:13
JFo? 17:13
apwJFo, and you are not hearing us on mumble17:13
JFogah17:13
JFoone sec...17:13
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JFo<-food17:31
* tgardner --> lugging servers around17:36
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apwbryceh, hey about ?18:01
apwbryceh, bug #716811 ... 18:01
ubot2Launchpad bug 716811 in nfs-utils "[SandyBridge] kernel BUG at /build/buildd/linux-2.6.38/fs/nfsd/nfs4state.c:3132!" [Undecided,New] https://launchpad.net/bugs/71681118:01
apwdid you have any idea which fix was relevant here?  i read the email list, and pulled the branches that tagahashi tested which seemed to get a change on 11th and yet the branch only goes up to the 6th18:02
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brycehapw, no, I had some trouble pulling his tree.  I ended up just switching off nfsv4; has been stable for me since then.18:18
apwbryceh, ok ... bah18:18
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=== bjf changed the topic of #ubuntu-kernel to: Home: https://wiki.ubuntu.com/Kernel/ || Natty Kernel Version: 2.6.38 || Ubuntu Kernel Team Meeting - February-22 - 17:00 UTC || If you have a question just ask, and do wait around for an answer!
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JFogah, burned my tongue at lunch :-(18:43
kamal... but will this make JFo any less loud?   hmmm.   ;-)18:44
JFodoubtful ;)18:44
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JFohey kamal,how is the newest DJ doing?18:48
JForather kamal,18:49
JFomy typing is horrible on a good day18:49
kamalJFo: oh she's doing fine -- still enjoying fooling with the DJ gear18:50
bodehi people, I own a sony vaio vccw with nvidiagt230. I always get a black screen on boot with maverick kernel 2.6.35, but we I tried natty alpha1 kernel 2.6.37 the problem finally was solved, now with natty alpha2 adn kernel 2.6.38 the problem is returnet (no more black screen, but on the screen remains the GRUB image, while the system is booted (i checked it on an external monitor))18:50
JFokamal, excellent! :)18:50
bodei want to know if this problem is well known, thanks! 18:50
janimoapw, is the decision to remove versatile from natty made?18:56
apwjanimo, /me is unaware of any significant progress on that 18:57
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janimoapw, any discussion needed or blocked on something?18:58
ografyi i just removed imx51 from the seeds18:59
apwjanimo, i thought there was testing going on, and i've not seen the outcome18:59
apwperhaps ogra knows as the testing was in his team i think18:59
janimoapw, ah, testing of qemu and omap?18:59
apwyep18:59
ograjanimo, yeah18:59
ograwe need to make sure the vm still runs18:59
janimowell, omap3 linaro images boot in qemu-linaro18:59
jjohansenbode: there are a number of video/display bugs but I am unsure if yours is the same as existing ones.  File a bug and then with all the appropriate information etc, it can be determined whether its a duplicate19:00
apwjanimo, yep, and those arn't our images sadly19:00
ograjanimo, rootstock will need changes first19:00
janimoogra, what changes does rootstock need?19:00
janimoI was hooing the package naming made that unnecessary19:00
ograit looks for the versatile kernel from netboot atm19:00
rsalvetijanimo: just to get the omap3 kernel19:00
janimothe qmeu-linary bin package names I mean19:00
rsalvetiI can help on that19:01
apwbode, nope i am not aware of that symptom set, please file a bug on the -3.30 kernel (if its still there)19:01
ograshould be only a few lines19:01
ograand a testrun with both modes (root and non root)19:01
bodeapw: ok, i'll file a bug  (what do you mean with  -3.30 kernel (if its still there)??)19:06
apwi mean testing the latest natty kerenl, and filing the bug if the issue is still there19:06
bodei tried also today with the daily-live image19:07
bodeand the bug was there19:08
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* tgardner --> lunch19:15
tgardnerpgraner, you've gone deaf20:13
sforsheeapw, bug 71718920:16
ubot2Launchpad bug 717189 in linux "thinkpad t410 freezes reproducibly upon resume from suspend" [Medium,In progress] https://launchpad.net/bugs/71718920:16
apwapw@agent57:~$ sysctl -a | grep kstack20:17
apwerror: permission denied on key 'kernel.cad_pid'20:17
apwkernel.kstack_depth_to_print = 2420:17
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Guest83863apw: bug filed! 20:35
Guest83863https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/71957120:35
ubot2Ubuntu bug 719571 in xorg "Natty Alpha2 monitor doesn't work, SonyVaio VPCCW1, NVIDIA GT230M" [Undecided,New]20:35
lamont`apw: around?20:35
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apwlamont, sup20:40
* jjohansen -> lunch20:41
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lamontapw: -> /query20:47
tgardnerpgraner, so, I'm shucking and jiving with my USB audio headset. no crashes yet using just Banshee.20:56
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pgranertgardner, try mumble20:57
tgardnerpgraner, working on it20:57
bodeapw: can you check if the information on the bug are usefull or if something else is needed?21:00
tgardnerbode, I think apw is done for the day. he's in the UK21:00
bodeops.. i'm in italy, i always forget about the time!21:03
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