/srv/irclogs.ubuntu.com/2013/09/05/#ubuntu-kernel.txt

ppisatimoin06:31
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smbppisati, morning (damn you early risers :-P)07:11
* apw yawns07:25
smbapw, Someone pushed you out of your bed?07:26
apwsmb, yeah the alarm (normal wakeup one007:28
smbapw, Damn those things too. :) Though usually I would not expect you to be on irc that quickly after07:29
apwsmb, different location, different pattern07:30
smbapw, Yeah, wrong birds outside and wrong bed below one07:31
apwheh07:31
apwbah i would need to upgrade my openvpn server all the way to saucy to get official ipv6 support; that sucks07:34
smbWow, would have thought we had support for longer now, and I thought just to have spotted changes in P about v6 in ... something07:35
apwit has some 'ipv6' options in there, but actually if you arn't just using a TAP it is pretty hard07:37
apwwell i guess unless something got backported i guess07:37
apwoh it might be 'using ipv6 for transport' is not supported until 2.307:39
smbI tend to be not following ipv6 that closely as you do (due to slacking on my side and any providers I got)07:40
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apwslackage in ipv6 seems to be an industry standard08:02
apwit is funny (to me) that my vps has had  ipv6 from day 1, and i have had it more than 5 years08:03
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ppisatibrb09:13
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henrixkamal-away: bjf: sconklin: this bug seems to be a regression in raring: bug #121551313:02
ubot2`Launchpad bug 1215513 in linux (Ubuntu) "System locks up, requires hard reset" [High,Incomplete] https://launchpad.net/bugs/121551313:02
* henrix -> lunch13:04
sconklinhenrix: thanks13:50
henrixsconklin: in fact, the issue should be present in quantal as well. lets see if we can get the original bug reporter to test the kernels with the offending commit reversed13:51
bjfhenrix, yes i was looking at that late yesterday13:58
rtgapw, the server dudes will likely be hassling us about bug #1218995 - you're kind of the expert in both topics14:08
ubot2`Launchpad bug 1218995 in linux (Ubuntu) "Hyper-V Synthetic Video Frame Buffer Driver not working" [Medium,Confirmed] https://launchpad.net/bugs/121899514:08
bjfhenrix, since it's a staging driver and one that folks can easily disable and live without until its fixed i'm inclined to identify the fix and get it into the next cycle rather than respinning kernels at the end of this cycle14:14
bjfhenrix, if we can identify the fix (and it looks like we may have already) we'll have -proposed kernels next week with the possible fix14:15
henrixbjf: makes sense to me. it looks there's a fix upstream, but its a non-trivial backport. i'm taking a look at it ATM, but we may just revert the offending commit as well14:16
bjfhenrix, ack14:16
bjfsconklin, ^ seem reasonable ?14:16
henrixbjf: we'll probably need to bring a few extra commits to backport the fix to 3.5 and 3.8. but i'm still looking at it (trying to reproduce here)14:16
sconklinbjf, henrix: yes, seems reasonable to go with a workaround and figure out how to really fix it in the next cycle14:17
rtghenrix, bjf: as a matter of distro kernel policy, staging drivers are "best effort". we can do whatever we want because I don't consider them subject to SRU (as long as we don't do something egregiously stupid)14:19
bjfrtg, right that's why i wasn't going to respin for this issue14:19
rtgack14:20
bjfrtg, henrix, also why i'm thinking just revert the 2-line patch and move on14:20
bjfif that is the issue14:20
rtgbjf, what driver is it ?14:20
henrixrtg: zram14:20
rtgah, that mess14:20
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sconklinrtg, bjf iirc there's talk of moving zram into mainline soonish14:25
sconklinfwiw14:26
rtgsconklin, yeah, but I think its had some serious work to get moved out of staging14:26
rtgI guess it depends on what kernel version we're talking about14:26
sconklinthe only thing a search turned up is a story on phoronix, and we know how accurate that might be . . .14:27
rtgapw, did you notice this ? https://bugs.launchpad.net/ubuntu/+source/linux/+bug/882147/comments/3714:55
ubot2`Launchpad bug 882147 in coreutils (Ubuntu) "overlayfs does not implement inotify interfaces correctly" [Undecided,In progress]14:55
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rtgjsalisbury, can you help out Til on bug #1167301 ?15:27
ubot2`Launchpad bug 1167301 in linux (Ubuntu) "8086:0166 [ThinkPad Twist S230u 3347] REGRESSION: Mirroring display works only with 1024x768 (4:3) whereas my laptop has 1366x768 (16:9) & external monitor 1920x1080 (16:9)" [High,Incomplete] https://launchpad.net/bugs/116730115:27
jsalisburyrtg, sure15:28
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smoserrtg, what made you think udev at bug 1220918 ?17:30
ubot2`Launchpad bug 1220918 in linux (Ubuntu) "networking does not come up in cloud image on hyper-v" [High,Incomplete] https://launchpad.net/bugs/122091817:30
smoserit isn't impossible, but seems unlikely to me.17:30
rtgsmoser, because you can manually configure the network ? that implies the driver is working.17:31
smoserif you look at the boot log, 'ci-info' (from cloud-init) shows that the network interfaces is up.17:31
smoserand /etc/network/interfaces is 'auto eth0' and 'dhcp'.17:31
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smoserso it would seem udev did its job of sending the network device added and ifup brought tried to dhcp, but the dhcp failed.17:32
smoseri suspected dhcp server was busted, this is reported to work if you just swap out a precise image.17:33
rtgsmoser, ok, I didn't look that close. if dhcp is running on that interface then udev has likely done its job.17:33
smoseri dont know for sure that dhcp is running... but 'ifconfig' showed the interface up.17:33
rtgsmoser, I wonder what would happen if you ran dhclient by hand ?17:34
smoserwell as reported it worked.17:34
smoserbut that was much later in boot.17:34
rtgsmoser, what was the bug number again ? I'll go back and take a closer look.17:35
smoserhttps://launchpad.net/bugs/122091817:35
ubot2`Launchpad bug 1220918 in linux (Ubuntu) "networking does not come up in cloud image on hyper-v" [High,Incomplete]17:35
smoserbasically, they tried to boot an image, it failed, logged in, ran 'ubuntu-bug' (and created the attached data)17:36
smoserand then ran 'ifup eth0' and it worked.17:36
smoserjsalisbury, do you have an easy way to install raring kernel into saucy ?17:41
rtgsmoser, well, the driver thinks it is up; "[   14.878905] hv_netvsc vmbus_0_12: Device MAC fa:16:3e:3f:96:eb link state up"17:42
smoserthat woudl be another good reason to think its up :)17:42
smoserbut 'ifconfig eth0 up' isn't "dhcp worked"17:42
rtghow about getting them to try the official release kernel ?17:42
smoserwell 12.04 works. per report.17:42
smoserwhat is "official release kernel"17:42
smoserraring ?17:43
rtg3.11.0-5 ?17:43
smoser3.11.0-4.917:43
smoseris what they used.17:43
rtgthey are booting 3.11.0-4 which is an -rc7 kernel IIRC17:44
smoserwell its what was in a cloud image built yesterday.17:44
smosererr. maybe 2 days ago.17:44
rtghmm, freaking beta freeze ....17:44
smoserhttp://cloud-images.ubuntu.com/saucy/current/saucy-server-cloudimg-amd64.manifest17:44
smoseryeah, that is still in there today.17:45
rtg-5 should bubble up in another day or 217:45
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* apw has had enough of reviewing xen, and calls it a day18:30
* smb has had enough of being reviewed and does the same18:32
jsalisburysmoser, sorry missed your request.  You can download the Raring kernel from: https://launchpad.net/ubuntu/raring/+source/linux/3.8.0-30.44  20:05
jsalisburysmoser, and install it with dpkg20:05
jsalisburysmoser, unless you want to wait and test the 3.11.0-5 kernel first20:06
rtgkamal, looks like a 3.8 regression in bug #1167301 (see comment #57)20:08
ubot2`Launchpad bug 1167301 in linux (Ubuntu) "8086:0166 [ThinkPad Twist S230u 3347] REGRESSION: Mirroring display works only with 1024x768 (4:3) whereas my laptop has 1366x768 (16:9) & external monitor 1920x1080 (16:9)" [High,Confirmed] https://launchpad.net/bugs/116730120:08
kamalrtg, looking at the code, I think the behavior would be the same even now in 3.1120:15
rtgkamal, I'm sure Til would be happy to verify that for you20:16
kamal"for me"   ;-)20:16
kamalrtg, fyi, he already confirmed that the problem still happens in 3.11 (comment #50)20:21
rtgkamal, ack20:21
kamalrtg, so this is effectively "just" an upstream drm bug.  I'm inclined to advise him to file a bug on kernel.org.20:23
rtgkamal, yep, but you might also consider reverting it from stable in the meantime20:24
kamalrtg, but then I'd be re-breaking whatever it was intended to fix in the first place (and its been in 3.8 stable since 3.8.8 -- ages and ages) ... and it'll appear in Saucy.   I don't think I'll revert it from 3.8 unless/until upstream agrees (which I bet they won't).20:25
rtgok20:26
kamaljsalisbury, fyi regarding your comment #47 in bug 1167301 ...  The patch that Til posted there isn't a proposed fix -- that's the content of the committed patch that broke it20:41
ubot2`Launchpad bug 1167301 in linux (Ubuntu) "8086:0166 [ThinkPad Twist S230u 3347] REGRESSION: Mirroring display works only with 1024x768 (4:3) whereas my laptop has 1366x768 (16:9) & external monitor 1920x1080 (16:9)" [High,Confirmed] https://launchpad.net/bugs/116730120:41
jsalisburykamal, ahh, ok.20:41
kamaljsalisbury, specifically 196e077dc165a307efbd9e7569f81bbdbcf18f6520:41
jsalisburykamal, thanks.  I'd yet to look close at the commit that caused the regression.20:44
kamaljsalisbury, np... until I looked at the commit, I misunderstood what he meant there too!20:45

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