/srv/irclogs.ubuntu.com/2013/07/25/#ubuntu-kernel.txt

slangasekso apparently the mako kernel doesn't have PERF enabled, which means powertop doesn't run.  I'm surprised given how much focus there's been on power management on the phones - is there something other than powertop I should be using?00:16
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ppisatibrb09:54
* apw reboots to see if any of his desktop will come back09:59
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* henrix -> late lunch13:34
ppisatiany brave soul who is willing to review my packaging of an armhf/generic-lpae flavour for S?13:41
ppisatiwatch out: at the end of the packaging, it craps out with an error13:41
ppisati"dpkg-gencontrol: error: package linux-udebs-lpae not in control info"13:42
rtgppisati, where is your repo ?13:42
ppisati"dh_gencontrol: dpkg-gencontrol -plinux-udebs-lpae -ldebian/changelog -Tdebian/linux-udebs-lpae.substvars -Pdebian/linux-udebs-lpae returned exit code 255'13:42
ppisatirtg: let me push it13:42
ppisatithe problem is that $someone is passing 'linux-udebs-lpae' to dpkg-gencontrol instead of 'linux-udebs-generic-lpae'13:42
ppisatibut i can't find where it comes from13:42
apwppisati, that would be my fault13:44
apwrtg, the udebs thing is my fault13:44
* rtg is still waiting on the repo location13:47
apwrtg, i'll fix the udebs bit ... 13:47
apwppisati, can you post your repo ... then i can test my fix13:48
ppisatihttp://kernel.ubuntu.com/git?p=ppisati/ubuntu-saucy.git;a=shortlog;h=refs/heads/master_generic-lpae13:50
ppisatiapw: ^13:50
ppisatirtg: ^13:50
apwrtg, this packaging error is mine ... sigh13:50
ppisatiit's a S/master-next of yesterday (my time)13:51
rtgppisati, do you really need an inclusion list ? I think it would be simpler to just have a single linux-image package.13:53
ppisatirtg: ah, could be that we can away without it13:54
ppisati*we can go13:55
rtgppisati,  its simpler, and I assume calxeda isn't all that worried about package size13:55
ppisatirtg: ok13:56
rtgppisati, is there currently HW available that will run arm LPAE ?13:58
ppisatirtg: not in my hands, but cortex a15 are lpae capable13:59
ppisatirtg: and qemu can emulate the a1513:59
ppisatirtg: if we want something really cheap, there's the samsung chromebook13:59
ppisati~250$13:59
rtgppisati, ok, just making sure that this isn't a new flavour for vaporware. I don't follow arm developments as closely as you14:00
ppisatihttp://en.wikipedia.org/wiki/ARM_Cortex-A15_MPCore14:00
ppisatirtg: ah, and of course, the new calxeda silicon :)14:01
ogra_ppisati, pfft, chromebook ... crap ... you want ubuntu edge !14:01
ppisatiogra_: auahauh :)14:01
ogra_128G at SSD speed and 4G ram :)14:02
rtgppisati, I'd be tempted to squash all of the config patches into 'UBUNTU: [Config] add an armhf/generic-lpae flavour' in order to make building somewhat bisectable, thought this has been good granularity for review.14:03
rtgthough*14:04
rtgppisati, I assume this flavour will be important for the LTS kernel as well ?14:05
rtgppisati, cut and paste error in kernel-versions.in: 'armhf  PKGVER-ABINUM   generic-lpae            PKGVER-ABINUM-generic'14:07
nessitadiwic, hola! I just saw your msg in the bug report. I'm not currently in the computer that has the issue, I will report back this afternoon, but I can tell audio does not work even on almost "0" load14:18
diwicnessita, okay...14:19
diwicnessita, these delays are really strange14:19
nessitadiwic, also, this happens since my update to raring, in precise I had no audio issues at all14:19
nessitadiwic, besides checking the load, which I will do, is there anything else I can check/try?14:19
nessitaI'm happy to upgrade or fresh install saucy14:20
diwicnessita, you can surely test random things 14:21
rtgdiwic, perhaps she should go back to Precise, but run the Raring LTS kernel in order to isolate any upgrade differences.14:21
diwicrtg, yeah, that is not a bad idea14:21
rtgor, are you pretty sure it is kernel related ?14:21
diwicrtg, no I'm not sure where in the system it is, at all14:22
diwicrtg, all I see is sudden delays, up to 200 ms, that causes the PulseAudio process to freeze14:22
diwicrtg, and underruns as a result14:23
diwicrtg, I don't know where those delays come from14:23
rtgnessita, after re-installing Precise (and verifying that all works as it should), then install linux-generic-lts-raring-eol-upgrade14:23
nessitadiwic, other apps such as mplayer and youtube on fierfox does not have this issue -- I guess those do not use PA?14:24
diwicI haven't ruled pulseaudio out completely either14:24
diwicnessita, it has to do with low latency I believe - when streaming media you can have higher latencies than when having phone conversations 14:24
rtgI guess if things work well with the LTS kernel, then the issue likely is with PA14:24
nessitartg, can do that, no problem (over the weekend)14:25
diwicnessita, so those delays of 200 ms are not a problem when the audio buffers are bigger than 200 ms, but in case of VoIP, buffers are more like 10 ms or so14:25
nessitadiwic, ah, so that explains why mumble/skype/hangouts are the one that trigger the issue14:26
apwppisati, yo ... i have just pushed a quicky fixy to saucy master-next which ought to fix your udebs issue14:28
apwppisati, could you give that test for me14:28
ppisatiapw: let me check14:28
apwyou ought to be able to cherry-pick it14:30
nessitadiwic, so, summarizing I should: report about system load on current installation when bug appears, and, wipe raring and install precise fresh, with raring kernel14:30
rtgnessita, install precise fresh, verify that all works well, _then_ install the Raring kernel14:31
diwicnessita, if raring kernel only does not show the problem, try with the raring X stack as well14:31
nessitadiwic, any how to on how to pull the raring X stack in? is there a ppa? 14:32
nessitartg, right, yes14:32
ppisatiapw: ok, it's building14:32
rtgthough its easy enough to reboot with the desired kernel14:32
diwicnessita, hmm, rtg should probably know the name of that package14:32
rtglinux-generic-lts-raring-eol-upgrade ?14:33
diwicrtg, right, that's both kernel and X stack?14:33
apwrtg, this last commit on unstable, it seems to be a rebase commit, a start new release, and a removal of alx at the saem time, is this intencional14:33
rtgdiwic, no, just kernel14:33
apwppisati, let me know ... thanks14:34
rtgmaybe xserver-xorg-lts-raring. But there is no going back after installing that.14:34
diwicoh14:34
diwicand libgl1-mesa-glx-lts-raring14:34
diwicaccording to the wiki14:35
diwicwiki.ubuntu.com/Kernel/LTSEnablementStack14:35
apwrtg, i thought you could downgrade again by installing the xserver-xorg (in theory)14:35
apwnot that i have ever tried of course14:35
rtgapw, perhaps, never tried it14:35
apwmlanghost is the one who should know i think14:35
rtgas would jmleddy or Sarvatt14:36
nessitaok, I guess that going back would be re-installing fresh after all those tests14:38
nessita(which is ok)14:39
diwicnessita, btw, there are no error messages or similar in dmesg that could give us a hint of the kernel is timing out waiting for something?14:40
apwrtg, this last commit on unstable, it seems to be a rebase commit, a start new release, and a removal of alx at the saem time, is this intencional14:42
rtgapw, oh yeah, I collapsed a bunch of noise14:42
rtgmostly useless history14:42
nessitadiwic, will also check when I get to that computer. Would you please add this questions to the bug report, so I don't forget to check anything before wiping that raring?14:44
rtgapw, all that noise is well preserved with the 3.10 tags14:44
diwicnessita, hopefully the latest comment is sufficient?14:48
nessitadiwic, right, I need to rememebr to check dmesg, but think I will remember :-)14:52
ppisatiapw: ok, the udeb fix did it14:55
ppisatibut now i've another error:14:55
apwwhats the new one14:55
ppisatihttp://paste.ubuntu.com/5911420/14:56
apwppisati, that implies the d-i config for is not being used i suspect14:57
rtgyou need a firmware exclusion file in d-i14:57
rtgppisati, did you fix the typo in kernel.versions.in ?14:58
ppisatirtg: yep14:58
apwppisati, did you copy the armhf-generic files over in debian.master-/d-i14:58
apwppisati, did you copy the armhf-generic files over in debian.master/d-i14:58
apwover to the new name14:58
ppisatiuhm14:59
ppisatii'm actually missing debian.master/d-i/exclude-firmware.armhf-generic -> debian.master/d-i/exclude-firmware.armhf-generic-lpae14:59
ppisatirtg: if i delete my generic-lpae.inclusion-list, will it automagically pick generic.inclusion-list or do i need to do something particular?15:12
rtgjjohansen, apw, would you review http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-saucy.git;a=commit;h=7e78ed6018577530d4ec1fe9f60486aa6d9de529 to make sure I've not done something stupid security wise.15:13
rtgppisati, no, it simply doesn't use an inclusion list, and therefore only creates a single linux-image package.15:16
rtgat least, thats the theory.15:17
ppisatirtg: let's see15:18
rtgppisati, you shuld also be OK if do_extras_package != true15:22
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BenCapw: Can you look at this build failure and explain what I need to do for ppc? https://launchpadlibrarian.net/145776419/buildlog_ubuntu-saucy-powerpc.linux-ppc_3.10.0-0.6_FAILEDTOBUILD.txt.gz15:32
rtgBenC, apw just applied a patch to master-next that ought to fix it.15:33
rtgUBUNTU: [Packaging] fix SRCPKGNAME-udebs-FLAVOUR handling for complex flavours15:33
BenCrtg: Thanks…when's the next upload?15:33
rtgBenC, unless something critical comes along, likely not until next week. we're considering switching over to 3.11-rc*15:34
rtgwe might sneak in a 3.10.y stable....15:34
BenCrtg: ack15:37
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ppisatirtg: ok, i based my stuff on top of master-next and i'm doing the last build, can you refrain from committing to master-next?15:54
infinityBenC: You may also be missing the debian/control tweaks you need, unless Andy pushed those to you.15:54
rtgppisati, I dunno, I'm kind of commit happy these days.15:55
infinityBenC: (We both noticed, FWIW, that we don't have write access to your saucy treee on github)15:55
bjfroadmr, just fyi, the newly respun precise kernel is in -proposed and ready for testing15:58
rtgbjf, I don't think he's on IRC15:58
bjfrtg, i just noticed :-(15:58
ppisatibrb15:59
BenCinfinity: Ah, I'll fix that up16:01
infinityzequence: We had to respin precise, FWIW.  Should be ready for a lowlatency rebase.16:02
BenCinfinity: added both of you16:03
apwright BenC soz was in a meeting16:04
apwBenC, so that error is due to you needing the new control stanza for that package in the flavour-control.stub16:05
apwBenC, did rtg already point you at it ... i was oging to commit it last night but couldn't16:06
BenCapw: I added you to the repo, so if it's quick for you, please commit it16:07
apwBenC, ack16:07
apwBenC, i've pushed up what ought to be the right changes, could you do a build test, your kit is sooo much faster than mine16:17
BenCapw: starting a full build now16:18
rtgppisati, is there any reason to call the new flavour generic-lpae as opposed to just lpae ? or maybe arm-lpae 'cause it _is_ specific to arm.16:32
apwrtg, well generic-<variant> the first part imples it is meant to be a common image for all systems ... right ?16:33
ppisatirtg: no reason, but that's what we had in x86 before (e.g. generic-lpae), wasn't it?16:33
apwin the smae vein as generic/generic-pae in x8616:33
ppisatiand i think i heard someone sayign that the lpae version of arm should have been called generic-lpae16:33
bjfppisati, are you going to respin precise ti-omap4 ?16:34
ppisatibjf: isn't it just a bluetooth fix?16:35
bjfyup16:35
rtgapw, ppisati: well, I think the 'generic' part of the flavour name is useless information. it doesn't really convey any meaning. (nor did it for x86 really)16:35
apwrtg generic is what we call kernels for things which arn't machine specific16:37
apwit has to have some name, well where we have a default variant16:38
infinityrtg: I can agree with the "it doesn't convey anything", but be consistent.  If you want to take it off the ARM kernels, ditch it from x86 too.  And that's way more effort than matters.16:38
infinity(In other words, don't bother)16:38
* rtg is just stirring the mud, and doesn't _really_ care all that much.16:39
ppisatipull sent16:44
rtgon the other hand, I really don't want to give the x86 32 bit folks any hope that we might someday reinstate support for x86 LPAE.16:44
apwthey will have to get that past you16:47
rtgI still get hate mail once in awhile16:47
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rtgcyphermox, sforshee: if I've 2 APs with similar characteristics, but one has clearly inferior signal strength, why would NM _ever_ choose the weaker one on resume ?16:49
apwrtg, we should hold off merging this new flavour until we get the new buildds16:49
apwrtg, as we will be moving to 24 hours to build16:49
rtgapw, I can merge but just not enable the flavour in armhf.mk16:50
apwrtg, sure makes sense16:50
* ppisati -> EOD17:03
rtgppisati, CONFIG_KVM_ARM_MAX_VCPUS=0 ? the default is 4.17:04
cyphermoxrtg: could it be a 2.4Ghz and the other a 5?17:05
rtgcyphermox, both are BG only17:06
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* rtg -> lunch17:34
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* rtg -> EOD19:52
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