/srv/irclogs.ubuntu.com/2013/02/15/#ubuntu-kernel.txt

aPpYehi.  I am going through a mini cd install.  can someone point me to some documentation explaining the differences between all these selections in the kernel selection?02:10
alkisgRegarding the LTS Hardware Enablement stack. (1) linux-image-generic-lts-quantal is PAE-only, and there's no "non-PAE" version available, right?05:44
alkisgBut (2) it's possible to install 12.04.2 and then install linux-image-generic, correct?05:44
alkisgIf so, my next question is, (3) what should one do to avoid xorg incompatibilities when he does that?05:45
alkisgWe've been shipping a customized version of the 12.04 and 12.04.1 ubuntu CDs with gnome-fallback preinstalled for 400+ Greek schools, and we're wondering how to handle the hardware enablement stack with 12.04.2...05:47
alkisgOuch, xserver-xorg-lts-quantal Replaces: xserver-xorg05:59
alkisgSo it's impossible to have both -pae and non-pae kernels with LTSP clients with the new stack, as they'll need different xorg versions06:00
alkisgOne would have to maintain 2 separate chroots for that... :-/06:01
* alkisg hopes that if some schools have to install the non-pae version, it'll will work with the new xorg stack...06:10
RAOFalkisg: It will *probably* work; possibly with the exception of plymouth.06:13
alkisgRAOF: as long as it doesn't halt the boot process, we don't mind at all06:13
alkisgThanks, /me installs the new stack to test all that...06:14
RAOFWe won't have tested new X stack + non-pae kernel, but upstream theoretically cares that it runs on arbitrary kernels.06:14
alkisgThat's nice; at least if we test + report incompatibilities, we'll stand a chance of getting them fixed06:15
* alkisg reboots to check06:17
work_alkisgApart from virtualbox-dkms crashing "Error! Bad return status for module build on kernel: 3.5.0-23-generic", everything else seems to work fine...06:32
=== work_alkisg is now known as alkisg
alkisgAh, and our "purge old kernels" script gets confused and tries to remove "linux-image-3.2.0-37-generic" because it thinks "linux-image-3.5.0-23-generic" is a newer version of the same flavor, while it's internally -pae instead06:38
ppisatimoin07:17
=== smb` is now known as smb
smbmoin08:34
smbppisati, risen from the near-dead already? :)08:35
ppisatismb: yep, i'm ok08:35
smbppisati, Thats what they all say  :)08:35
ppisatismb: i bit of sore throat but i can handle it :P08:35
=== alkisg is now known as work_alkisg
=== henrix_ is now known as henrix
smbapw, (no)09:45
henrixapw: gbp-pq10:36
henrixin git-buildpackage10:36
apwapw to commit a patch you use dpkg-source --commit ... now it is in the logs10:41
=== work_alkisg is now known as alkisg
caribousmb: what are we up to wrt the linux-crashdump metapackage change to kdump-tools ?11:18
caribousmb: both kdump-tools & makedumpfile 1.5.1 are now in Raring archives11:18
smbcaribou, I think in the end people wait for you to tell them all is main to apply the patch I sent (and by tell I mean on the thread in the kt-ml)11:19
caribousmb: looks like a chicken & egg thing : kdump-tools will not make it to main unless a package in main depends on it11:20
smbcaribou, Ok, well, if that is made clear... 11:22
smbapw, would you apply the change if that is made clear. Should be a quick resolution as soon as she complains11:23
smb(or Tim (though he is not getting in today), or Leann)11:23
apwif the resolution is that it is supportable in main (wahtever is moving), then i would happily the patch to make it happen11:34
caribouapw: kdump-tools is moving. It's part of the makedumpfile source package which is already in main11:36
apwsmb, remind me of the patch title and i'll poke it11:36
smbapw, [raring-meta] Update linux-crashdump dependencies11:37
apwsmb, ta11:37
=== alkisg is now known as work_alkisg
apwsmb, is there a bug open for this issue?  i have the deeling there is?11:49
apws/d/f11:50
smbapw, don think specifically... a blueprint there is .... maybe caribou has more memory11:51
apwdon't need one, but if there is one i would reference it in this commit11:51
caribouapw: I don't think there's a bug open for it, only a blueprint as smb indicated11:51
apwack thanks11:52
caribouapw: I can create one if we want to track it11:52
apwno if it is not going back for SRU then we don't care11:52
caribouapw: smb: I don't think we'll want to bring that into Precise11:52
smbno11:53
apwsmb, you want this uploaded 'now' ?12:00
smbapw, no strong preference... or with the next time we would do it... Though then we could be surprised by it getting stuck for a bit...12:01
apwyeah i think it is safer to shove it in now when things are clean and see what happens12:02
apwgives us a few days to fix it before leann is on her next rebase12:02
* smb nods and walks back to the kitchen12:05
=== yofel_ is now known as yofel
apwsmb, ok your bits are in -release13:42
* smb hopes not13:42
henrixinfinity: hi! any news on the bugs verification?13:55
apwsmb, i would have thought you would have welcomed some -release14:00
smbapw, not sure I really want that for my bits...14:01
apwsmb, blame britney she did it to you14:04
smb...14:05
xnoxapw: i have a fague recollection that you possibly tried "ubiquity LVM install" and it "did nothing". I just checked raring-ubuntu-desktop and it does lvm install correctly. Was there something special about your lvm test? (e.g. were you testing a flavour?!)14:28
xnoxs/fague/vague/14:28
ogra_fague is a nice word too though14:33
ogra_:)14:33
infinityhenrix: Not yet.  Wrong timezone for people to get sagari happy in Boston.14:36
henrixinfinity: ack14:37
smbxnox, I think I sat in the same room when we tried. What we did was basically selecting lvm install but then trying to manually partition. And there we could not set partitions to be lvm pvs. Nor get any assemble VGs screen to show.14:42
smbiirc that was normal desktop image14:43
xnoxsmb: true, manual partitions doesn't have LVM yet. I have some code, but it would be very d-i style LVM partitiong which can be confusing.14:44
xnoxonly automatic install can do lvm in the desktop image so far.14:44
smbYeah, so our usecase would still fail. :) Tried him to have his disk partitioned into two vgs... foolish of me. ;)14:46
* ppisati disappears for ~20mins15:09
=== zequence_ is now known as zequence
xnoxsmb: *sigh* I do have lvm on top of full disk encryption, and then later a shrunk and split that to create an unencrypted lvm vg15:35
xnox(for vm/schroot/scratch partitions)15:36
smbxnox, Heh, yeah. Well in the end we just went for a non-lvm root and swap partition and left another one unused for later. Beside its probably something that only people use that use the server install anyway. :)15:39
* xnox totally uses lvm and multi-partition and stuff15:40
xnoxno surprise I added ubiquity support =)15:40
xnoxthere are requests for better mdadm support from $enterprise as well15:40
* ogasawara back in 2015:43
czajkowskialoha - having a lot of trouble with https://launchpad.net/bugs/1011623  any idea of any work around, or an eta on it being fixed. 16:23
ubot2Ubuntu bug 1011623 in linux (Ubuntu) "8086:0091 Unstable wifi connection when connect to 802.11n AP with iwlwifi driver" [Medium,Confirmed]16:23
bjfsforshee, ^ this seems like a common bug for iwlwifi. i don't have any of that here right now16:24
sforsheebjf, I've got some but nothing running the precise kernel. I can give it a try here in a little bit.16:25
sforsheebjf, is this a regression?16:25
bjfsforshee, from the bug, it doesn't seem like it. seems like this has been a problem always16:26
sforsheeoh, I see the comment that it's still a problem in quantal/raring16:26
sforsheethough in raring there was a problem that has a fix, not sure if it's trickled down to us yet though16:27
czajkowskisforshee: ah good to know 16:27
czajkowskiI thought if I upgraded to raring it might be better16:27
czajkowskibut just as bad as it was on quantal 16:27
sforsheebjf, czajkowski: so for a while we know that some people have had problems with 802.11n and iwlwifi, but it'16:27
sforsheebut it's very dependent on the particular machine and the environment16:28
sforsheeI've never been able to reproduce it with what I have, nor have the developers at Intel16:28
czajkowskisforshee: not sure it was happening on the cisco AP router but definately happens on UniFi AP16:29
sforsheeczajkowski, I've been sitting next to people having problems on their machines while on my machine it's fine16:30
czajkowskisforshee: yeah don't be telling me this :)16:31
czajkowskicauses me no end of grief when I go over to my other halfs place and spend half an hour or more trying to get on the network to do work 16:31
sforsheebjf, czajkowski: the 3.8.0-6.11 raring kernel has the fix for the regression that was in 3.816:32
sforsheeoh that regression was in 3.7 too16:32
bjfok, so the currently released raring kernel would have that fix16:33
sforsheeyeah, but that's fixing a regression from 3.7 so it doesn't help precise/quantal, and may not actually fix czajkowski's problems at all16:33
sforsheeit fixed problems I was seeing though16:34
bjfack16:34
antaruswe basically turn N off on precise16:34
antarusbecause it works poorly16:35
antarusI have an internal bug to 'figure out how to make it work, because N is awesome'16:35
antarusbut its pretty low priority ;p16:35
antarusczajkowski: you say the quantal kernel fared no better in your case?16:36
sforsheeso in reality there's likely more than one issue that's causing people's problems with n16:37
sforsheeone aspect of the problem seems to be noisy environments though16:37
czajkowski3.8.0-6-generic #13-Ubuntu SMP Thu Feb 14 17:22:41 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux16:37
sforsheewe get a lot more reports of iwlwifi problems from enterprises and people at confereneces16:37
sforshee*conferences16:37
czajkowskiis what I'm currently on 16:37
sforsheeokay, that should have the fix for the 3.7 regression16:38
czajkowskigreat16:38
czajkowskibut I'm still havng issues16:38
czajkowskiso must be something else16:38
bjfczajkowski, so it's all fixed, have a good day16:38
bjfheh16:39
czajkowskithe other alternative is to get the other half to turn off N but then I've to listen to him whinge he cant use it 16:39
czajkowski*sigh*16:39
sforsheeczajkowski, are you in an environment with lot's of people using wifi or lots of APs around?16:40
antarussforshee: well I mean people want to use N on the google bus, and let me tell you, the google bus network sucks, terribly16:40
czajkowskisforshee: nope - house, only me here. nobody else 16:40
sforsheeokay, so maybe something related to your AP then16:41
czajkowskisforshee: will look into that, but no isues on iOS or fedora just ubuntu :/16:42
sforsheeczajkowski, yeah, not saying the AP is at fault, just that maybe something it does exposes some iwlwifi bug or something like that16:43
czajkowskinods16:43
czajkowskiis there any more info I could get that would help debug it ?16:44
czajkowskifor you guys 16:44
sforsheeczajkowski, so you get the same sorts of messages as the original reporter on LP#1011623?16:44
apwbug #101162316:44
ubot2Launchpad bug 1011623 in linux (Ubuntu) "8086:0091 Unstable wifi connection when connect to 802.11n AP with iwlwifi driver" [Medium,Confirmed] https://launchpad.net/bugs/101162316:44
apwczajkowski, does N work for you if you rmmod/modprobe ?  until next suspend or wifi off event ?16:46
czajkowskiI've never seen an error message, it conects and hangs..16:46
czajkowskiapw: yup 16:47
czajkowskiexactly 16:47
czajkowskionce I learnt that my life was alot smoother 16:47
apwczajkowski, then your issue doesn't sound liek the one in that bug to me, that sounds like it breaks in the middle16:47
czajkowski:/16:47
sforsheeczajkowski, then please file a new bug by running 'ubuntu-bug linux' after you've been experiencing those problems and assign it to me16:48
czajkowskisforshee: will do and thanks for the help folks 16:49
sforsheeczajkowski, probably we should focus on raring to start because it's easiest to get upstream to pay attention to the latest kernel version16:49
czajkowskisforshee: lemmie go and reboot and not start wifi and see if it works16:52
czajkowskiknowing my luck I'll have no issues 16:52
sforsheeheh16:52
czajkowskiperfect 16:54
czajkowskitypical 16:54
=== JanC_ is now known as JanC
* ppisati -> gym17:23
xnoxapw: can an overlayfs be rebased from one base image onto another, with a goal of reducing amount of space used, since content on the new base matches content in overlayfs better.17:51
apwxnox, rebased by like unmounting it and mounting it over something else ?17:52
xnoxapw: well kind of, apart from I need to a de-dup. Eg. base-1: /blob1 base-2:/blob1.1, and overlayfs: rm /blob1; wget http://example.net/blob1.117:57
xnoxapw: such that when overlay is moved from base-1 to base-2, it now should be empty and not store the copy of blob1.1 (identical and present on the new base)17:58
xnoxor does it do this already? via lazy compare and discard17:58
xnoxone may want to ignore modification/creation timestamps etc.17:58
=== chuck_ is now known as zul
=== henrix is now known as henrix_
=== henrix_ is now known as henrix
apwit does none of the things you are hoping for18:10
apwxnox, ^^18:11
* ogasawara lunch20:13
=== henrix is now known as henrix_

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