I verified that the performance is the equivalent of upstream with
3.13.0-32-generic. There is still work to be done upstream but this gets
us quite a bit further.
** Tags removed: verification-needed-trusty
** Tags added: verification-done-trusty
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I verified that the performance is the equivalent of upstream with
3.13.0-32-generic. There is still work to be done upstream but this gets
us quite a bit further.
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Hi Tim,
Note that the referenced commit only makes it so that if you don't back
a PowerKVM guest with hugepages, hugepages do not (falsely) appear to be
supported. In such an environment the message referenced in this bug
report will still be displayed as it should -- hugepages aren't
supported
Breno,
Was your test done with a cgmanager with the -M flag passed?
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https://bugs.launchpad.net/bugs/1392176
Title:
mounts cgroups unconditionally which causes undesired
Serge,
That should only be true for unified hierarchy. In legacy hierarchy,
effective_cpus follows cpus, I think?
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Title:
mounts
To clarify to everyone possibly affected by this bug, and in reviewing
the thread @Henrik provided, it seems like the upstream community
(linux-uvc) has reviewed the patch and asked for some modifications
(April 27, 2016). So that is why the patch has not made its way into
Ubuntu kernels yet, as
On 07.04.2016 [17:18:58 -], Dave Chiluk wrote:
> According to
> https://wiki.ubuntu.com/ppc64el/Recommendations#Crash_Kernel_recommendations
>
> it looks like the following should be used.
> crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
>
> These should be made
Couple of thoughts, which we probably should get IBM's advice on:
I believe this is using: crashkernel=384M-:128M
128M reserved seems too small for so much memory, tbh.
Also, I see that all the CPUs are on in the crashkernel, when
realistically only 1 CPU is needed (and there have been issues
On 12.04.2016 [19:53:57 -], Dave Chiluk wrote:
> I can confirm that the following settings for crashkernel on powernv result
> in the following console log.
> crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
If I read that correctly, it failed to kdump at all? Can
On 12.04.2016 [18:51:36 -], Dave Chiluk wrote:
> I received another update from the end user.
> "A fresh 14.04.4 DVD Ubuntu install with updates (3.16.0-69 kernel) in a
> diskful setup (no NFS, no aufs, 1T swap disk) also fails to kdump, either
> hangs or OOMS."
>
> My understanding is
On 12.04.2016 [21:13:40 -], Dave Chiluk wrote:
> With
> ubuntu@modoc:~$ cat /proc/cmdline
> root=/dev/mapper/mpath0-part2 ro console=hvc0
> crashkernel=2G-4G:320M@32M,4G-32G:512M@32M,32G-64G:1024M@32M,64G-128G:2048M@32M,128G-:4096M@32M
>
> I get the following console log
> [ 191.833046]
On 08.04.2016 [11:04:47 -], Louis Bouchard wrote:
> Hello,
>
> Regarding nr_cpus=1, the equivalent maxcpus=1 is set in the kexec
> command (at least on default installs) :
Yep, you're right, sorry!
> Maybe disabling SMP alltogether by setting maxcpus=0 could be considered
> but that
@Joe, based upon the identified commit, I wonder if it would be worth
testing backports of follow-on fixes specifically for that commit?
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b5d5f27d938fb6fc8d3202704e699d2694a02da6
Err, apologies Joe, it does seem like upon more careful reading of the
bug report, the second mentioned commit (comment #18) specifically
introduced the regression? That seems unlikely at best given it's
contents, rights? That is, if the divisor was zero after that commit, it
was zero before it,
On 13.04.2016 [23:44:39 -], Dave Chiluk wrote:
> So it looks like this crashkernel argument is not resulting in any reserved
> memory.
> The correct crashkernel argument should look like this.
> crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M@32M
>
> Additionally
uname -a from the installer shell:
Linux (none) 4.8.0-17-generic #19-Ubuntu SMP Sun Sep 25 05:58:36 UTC
2016 ppc64 GNU/Linux
We blocked release of the powerpc iso for beta2 because of this bug in
#ubuntu-release, so there is no beta-2 image :)
For the net boot iso, (maybe because of the
Re-tested in 16.10, and the displaylink driver does work, but is much
much laggier than in 16.04. Not yet had a chance to debug that.
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https://bugs.launchpad.net/bugs/1376771
Not sure if this will really help here, but I have a D3100 and I was
able to drive two monitors using
http://www.displaylink.com/downloads/ubuntu on 16.04. 16.10 again breaks
it since the out-of-tree driver doesn't build against the later kernels
(or so it seems). I wonder if this is something
Public bug reported:
xenial daily ISO successfully installs using the same method on the same
system, but yakkety reports:
Sep 27 21:13:14 cdrom-detect: Searching for Ubuntu installation media...
Sep 27 21:13:18 cdrom-detect: Devices: ''
Sep 27 21:13:23 cdrom-detect: Devices: ''
Sep 27 21:13:24
I'm not able to run apport-collect from the installer shell.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1628284
It seems like 14.04.0/1's kernel would still need this backport -- 3.13
base and the upstream fix went into 3.14.
** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
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@chih: Was helping a user in #ubuntu today with the same device ID
(413c:8143). But I think I'm a bit confused by this, I'm looking at the
upstream source and I see:
$ grep 413c drivers/bluetooth/btusb.c
{ USB_DEVICE(0x413c, 0x8197) },
{ USB_DEVICE(0x413c, 0x8126), .driver_info =
Hi Tim,
Discussed this with Josh Powers and it seems at least this particular
issue is now fixed, sorry for the delay on my end.
-Nish
** Changed in: linux (Ubuntu Yakkety)
Status: In Progress => Fix Released
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*** This bug is a duplicate of bug 1612627 ***
https://bugs.launchpad.net/bugs/1612627
** This bug has been marked a duplicate of bug 1612627
iscsitarget-dkms 1.4.20.3+svn499-0ubuntu2.1 fails to build on
linux-generic-lts-xenial kernel
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How is this supposed to work generally. On DLPAR, kdump needs to be
reloaded -- does that the mean the kdump.service should be watching for
dlpar events?
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I believe this request should be routed to the kernel team (setting of a
kernel default value for POWER systems)?
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Title:
Ubuntu
I don't see any fundamental issue with providing a NET_WAIT_TIME
variable (probably should be namespaced to KDUMP_) in the kdump config
file, but:
1) this seems like a hack to work around slow hardware, right?
2) it can't be automatically deduced, afaict. Or do you want to have 30s
delays
$ syncpackage -b 1706946 -s rbalint -f crash
syncpackage: Source crash -> artful/Proposed: current version 7.1.8-1ubuntu2,
new version 7.1.9-1
syncpackage: New changes:
crash (7.1.9-1) unstable; urgency=medium
* Patch from Balint Reczey : Build crash on all Linux
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1687273
Title:
Shared folder randomly not mounted
Status in
Right, I understand fully what the bot is asking for, but it's not
exactly relevant here. We are seeing (on at least two systems) a lack of
IIO device discovery. If I modprobe all the iio modules, I do get a
/sys/bus/iio, but no devices in it. So it feels like something is
missing, but I don't
I just tried booting into 4.15.0-20 as the release pocket has it still
and it also failed to work. So now I'm wondering if/when it did work. I
will try and narrow it down in the next few days.
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Public bug reported:
I have a Yoga 900-13ISK and a Thinkpad T470s. Both have had working
screen rotation in the past. However, I noticed today while supporting a
user in #ubuntu, neither do now. No icon in the Gnome menu and:
# G_MESSAGES_DEBUG=all iio-sensor-proxy
** (process:14877): DEBUG:
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