** Changed in: linux-lowlatency (Ubuntu)
Status: Confirmed => Fix Released
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Released
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Still works, so it seems fix has been released.
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Title:
lowlatency-flavour crashes and locks up alot
Status in “linux” package in U
3.13.0-16-lowlatency seems to be working fine
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Well, first I will test 3.13.0-16-lowlatency
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Title:
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Status in “linux” package in Ubun
I have upgraded to 14.04 again. I'll download rc5, rc4 etc
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I've been busy, so I did not try the last versions that Joseph posted.
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Status
but you have issues with previous version?
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3.13.0-16-lowlatency has no issues for me as far as I can see. At least
I virtualbox running all day - no crashes.
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Title:
lowlatenc
Does http://kernel.ubuntu.com/~kernel-
ppa/mainline/v3.14-rc5-trusty/CHANGES show all changes, or only those
produced by ubuntu team?
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I had a lockup with rc4, so the change must be between rc4 and rc5, but
it seems is not the one of ehci.
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Title:
lowlatency-flavour
Now Im using rc5 and it seems to work fine.
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Status in “linux” package in Ubunt
netconsole3.2.log
[ 31.830432] usb 2-3.3: USB disconnect, device number 3
[ 71.972061] INFO: rcu_sched detected stalls on CPUs/tasks: { 1} (detected by
2, t=15002 jiffies)
3.14-rc1
Paul E. McKenney (54):
rcu: Break call_rcu() deadlock involving scheduler and perf
comment 3
1,1046,323
I have looked for changes related with deadlocks. In 3.14-rc2 there is
no-one, so we can avoid testing that one.
** Attachment added: "Changes related with deadlock"
https://bugs.launchpad.net/ubuntu/+source/linux-lowlatency/+bug/1275116/+attachment/4008655/+files/changes.txt
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Im testing rc5 again, only to see if it has the error and I didn't wait
enogh
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Title:
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The thing is that perhaps 3.14-rc4 has the error too, because with the
patch my pc was switched on for all day and got stucked at night. I will
try 3.14-rc3
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Per comments #167 and #168, it sounds like this bug is resolved in
v3.14-rc4. It also sounds like commit a1227f3c is not what fixes this.
It is probably best for us to perform a reverse bisect to identify the
real commit that fixes this in 3.14. The first step is to identify the
first 3.14 kernel
My system blocked again :( This time screen got black.
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Title:
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Status in “linux” packa
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Committed
** Changed in: linux-lowlatency (Ubuntu)
Status: Confirmed => Fix Committed
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It seems to work OK.
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Title:
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Status in “linux” package in Ubuntu:
Confirmed
Status i
There are also lowlatency kernels available for testing at the link:
http://kernel.ubuntu.com/~jsalisbury/lp1275116/
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Title:
lowlate
Yes, that would be great. I'll also build a lowlatency specific kernel
and post it shortly.
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Title:
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I suppose that we have to test them with "threadirqs"
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Title:
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Status in “linux” packag
I built a Trusty test kernel that has a cherry pick of commit
a1227f3c1030e96ebc51d677d2f636268845c5fb. This test kernel can be
downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1275116/
Can you test this kernel and confirm it resolves this bug? I built an
i386 and amd_64 version of the k
The solution of 3.14-rc5
** Patch added: "patch.patch"
https://bugs.launchpad.net/ubuntu/+source/linux-lowlatency/+bug/1275116/+attachment/4005495/+files/patch.patch
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htt
Thanks for your help Joseph
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Status in “linux” package in Ubuntu:
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S
Great!=)
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Title:
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Status in “linux” package in Ubuntu:
Confirmed
Status in “linux-low
The following commit has landed in upstream v3.14-rc5:
commit a1227f3c1030e96ebc51d677d2f636268845c5fb
Author: Stanislaw Gruszka
Date: Wed Feb 19 10:29:01 2014 +0100
usb: ehci: fix deadlock when threadirqs option is used
It has also been cc'd to stable, so it will make it's way into the
sta
A backport to saucy is needed too.
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https://www.kernel.org/diff/diffview.cgi?file=%2Fpub%2Flinux%2Fkernel%2Fv3.x%2Ftesting%2Fpatch-3.14-rc4.xz;z=8642
This one says something about locks:
https://www.kernel.org/diff/diffview.cgi?file=%2Fpub%2Flinux%2Fkernel%2Fv3.x%2Ftesting%2Fpatch-3.14-rc4.xz;z=8643
https://www.kernel.org/diff/di
nd how can we find the change?
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Status in “linux” package in Ubuntu:
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That is good news that the bug appears to be fixed in 3.14-rc4. If it
is stable and the bug is in fact gone after some time, we can perform a
reverse bisect to identify the commit that fixes this in 3.14-rc4.
@jamie, it should be ok that HDMI is not working with this kernel. We
are only interest
The only bad point is that I don't have HDMI audio
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It seems to be working for me, but it can fail it any moment...
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Title:
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Status in “lin
If 3.14-rc4-lowlatency is as good to set with "threadirqs" as the
generic kernel I can say that 3.14 works as a charm.
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Title:
lowla
Testing
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Title:
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Status in “linux” package in Ubuntu:
Confirmed
Status in “linux-lowl
There is some other bug reports that indicate this may be fixed in the
mainline kernel. Can you see if that is the case by testing 3.14-rc4:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14-rc4-trusty/
If the bug still exists there, then the other bug report may not be
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yes, I filled one. the link is somewhere upwards
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Well then it's clear. Do we have a kernel bug on this?
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3.13.0-generic stucks with threadirqs
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C
But 3.11.0-17-generic seems to work fine with threadirqs
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Title:
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I don't know what changes has gone into the trusty 3.11 or 3.12 kernel.
but if I should bisect based in "threadirqs" I would make 3.12 as good
and 3.13 as bad based on my comment from yesterday :
v3.12-trusty/ seems to work for me. So to me it seem to have broken between
3.12 and 3.13. For sure
so the change that produced the error is there, no?
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v3.11.10.4-saucy + "threadirqs" works OK, but the 3.11-lowlatency that
trusty had back in January did not. This issue is getting me down as far
as managing all the different version. :)
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I have a doubt. In http://kernel.ubuntu.com/~kernel-ppa/mainline/ do
developers of ubuntu post their kernels? Ubuntu uses those kernels
later? I mean, changes done in the ppa are the same that in the ubuntu-
kernel?
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And soren you said
The 3.11 flavour that where upgraded to 3.13 today crashed 10 times this
morning. I have the crashdums, but I figured that it might have been
solved in 3.13. Unfortunatly it seems like it is not.
I will add crashdumps when I get crashes that do not just lockup the
machine but c
BOOT_IMAGE=/boot/vmlinuz-3.11.0-17-lowlatency root=UUID=94224f17-82cd-
44ee-91a4-2243806ae66c ro debug ignore_loglevel threadirqs
has been up for 8 hours. Until now no probs.
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If you mean v3.11.10.4-saucy then it works without problems.
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Status in “linux”
And have you tried actual 3.11 kernel? perhaps now it fails too and we
can find the change that produce the error.
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Title:
lowlatenc
Yes indeed. But that sort of follows the fact that the saucy kernel - in
all version until christmas ran perfectly. That means 3.11 only. There
are 3.12 kernel at the her [1] but it does not look like they ever got
into saucy for real.
[1] http://kernel.ubuntu.com/~kernel-ppa/mainline
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Søren does 3.11 works for you with threadirqs, because i had some
errors. I'm going to try it again.
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Title:
lowlatency-flavour cras
v3.13-rc1-trusty with "threadirqs"crashes with this trace.
** Attachment added: "IMAG0515.jpg"
https://bugs.launchpad.net/ubuntu/+source/linux-lowlatency/+bug/1275116/+attachment/3988700/+files/IMAG0515.jpg
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Title:
lowlatency-
v3.12-trusty/ seems to work for me. So to me it seem to have broken
between 3.12 and 3.13. For sure it did break since where saucy where
around christmas, because I ran that with it's lowlatency until then.
I'll try v3.13-rc1-trusty to check.
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http://pastebin.com/TJ2f83ai
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Title:
lowlatency-flavour crashes and locks up alot
Status in “linux” package in Ubuntu:
Confirmed
Log
** Attachment added: "netconsole3.2.log"
https://bugs.launchpad.net/ubuntu/+source/linux-lowlatency/+bug/1275116/+attachment/3988478/+files/netconsole3.2.log
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https:/
3.2 kernel failed
** Attachment added: "netconsole.log"
https://bugs.launchpad.net/ubuntu/+source/linux-lowlatency/+bug/1275116/+attachment/3988477/+files/netconsole.log
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Trying
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Title:
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Status in “linux” package in Ubuntu:
Confirmed
Status in “linux-lowla
It would be good to know if when using the threadirqs parameter is a
regression. If that is the case, we can bisect to identify the commit
that introduced this.
Can you test the following kernels with the threadirqs parameter enabled
and post back if any do not exhibit the bug:
v3.2 final: http:
On Wed, Feb 19, 2014, at 11:12 AM, Jaime Pérez wrote:
> we have made it and I think results are up
>
> --
I can't see if you tried running linux-generic with threadirqs though.
It seems to have made a difference for Søren.
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we have made it and I think results are up
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Title:
lowlatency-flavour crashes and locks up alot
Status in “linux” package in Ubuntu
I'm the maintainer of the config for linux-lowlatency, btw. And, I had
the kernel freeze only when a certain driver was loaded, with threadirqs
enabled. Here's the bug report
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1279081
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For what it's worth running virtualbox I'm seeing the following.
* NO CRASH with generic kernel.
* CRASH with generic kernel with "threadirqs".
* NO CRASH with latest lowlatency kernel. Running 3 hours now. With previous
lowlatency kernel a crash would happen within minutes..
* CRASH wqith previo
On Wed, Feb 19, 2014, at 07:52 AM, Søren Holm wrote:
> 3.13.0-9.29 and well as 3.13.0-10 contains this change
>
> [Config] lowlatency -- turn CONFIG_IRQ_FORCED_THREADING_DEFAULT off
> temporarily
>
> I wonder if Andy Witcroft could add a comment wheather it relates to
> this bug.
>
We don't kn
3.13.0-9.29 and well as 3.13.0-10 contains this change
[Config] lowlatency -- turn CONFIG_IRQ_FORCED_THREADING_DEFAULT off
temporarily
I wonder if Andy Witcroft could add a comment wheather it relates to
this bug.
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Just to confirm, you can reproduce this bug with the -generic kernel if
you add the threadirqs boot parameter? If that is the case, we may be
able to test some older kernels with threadirqs and see if this is a
regression. If it is, we can then bisect to identify the commit that
introduced this r
I get the lockup using fglrx but not xorg-radeon
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Title:
lowlatency-flavour crashes and locks up alot
Status in “linux” package in
I'm changing a few things.
** Package changed: linux (Ubuntu) => linux-lowlatency (Ubuntu)
** Also affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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http://pastebin.com/Bt6DS7xS
I have gathered all kernel options related to IRQ. So perhaps one of
these options fix the problem. Any idea?
** Package changed: linux-meta (Ubuntu) => linux (Ubuntu)
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http://pastebin.com/nJsi7ZGE
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Status in “linux” package in Ubuntu:
Confirmed
Net console kernel trace output
** Attachment added: "netlog.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1275116/+attachment/3980503/+files/netlog.txt
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http
It's the same problem. CPU got stucked. But now I'm using generic and in
kernel options I have only "debug ignore_loglevel".
** Attachment added: "CPU got stucked"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1275116/+attachment/3980501/+files/netlog.txt
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My system blocked without nothreadirqs activated, so perhaps that wasn't
the problem. I'm using generic now.
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Title:
lowlatency-flav
Well, I think I've understood. This command does that events can stop
what the cpu was doing without making a thread(I don't know what exactly
is that). So it seems that some event is blocking one of the CPUs
because it kidnaps the CPU?
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It seems to be nothreadirqs. I'm reading some info about IRQ:
http://lwn.net/Articles/302043/
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Title:
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Welll I removed "splash" and "quiet" to be able to see what is
going on and then added "threadirqs".
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My cpu bloqued with nothreadirqs
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Status in “linux” package in Ubuntu:
Confir
ah is the same problem! you only put the irq thing?
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My new attachment is btw. created with the virtualbox driver out of the
way just to be sure.
https://launchpadlibrarian.net/166218408/IMAG0510.jpg
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Great suggestion. It crashes 4 out of 5 boots for me. All of them with
simmilar lock during some systemd-udev thing and a stuck CPU.
** Attachment added: "Crash with 3.13.0-8-generic #28 booted with "threadirqs""
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1275116/+attachment/3980049
** Attachment added: "Crash with 3.13.0-8-generic #28 booted with "threadirqs""
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1275116/+attachment/3980047/+files/IMAG0510.jpg
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As an additional data point, can you see if this bug also happens if you
boot the -generic kernel with the threadirqs boot parameter?
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I got a lock in Ubuntu 13.10, when playing half life. 2 on a row. I was
using lowlatency, so perhaps its the same error. I have to install
netconsole again.
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in my view it has to do with ubuntu 14.04, not with the kernel
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Title:
lowlatency-flavour crashes and locks up alot
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The version that was in 13.10 at that time - problably 3.11-lowlatency.
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Status
But, I mean, did you ran 13.10 with 3.13-lowlatency kernel? Or with the
3.11-lowlatency one?
** No longer affects: virtualbox
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Yes - I ran 13.10 from august 2013 until december 2013 with no issues at
all.
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ohh then i was wrong:( if you install ubuntu 13.10 and upgrade the kernel
does the problem fade away?
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Title:
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Well ... virtualbox (and virtualbox-dkms) is uninstalled. Soe the
modules are simply not there anymore.
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https://bugs.launchpad.net/bugs/1275116
Title:
lowlatency-flavour c
you have uninstalled vb? but are its modules disabled?
On Feb 12, 2014 12:16 AM, "Søren Holm" wrote:
> Oh welll I can now conclude that my system can lock during boot
> like in #5. And that even if virtual box is not at all installed.
>
> So virtualbox clearly pushes thing, but the preempt-s
Oh welll I can now conclude that my system can lock during boot
like in #5. And that even if virtual box is not at all installed.
So virtualbox clearly pushes thing, but the preempt-stuff can tip by
itself also.
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@Joseph thats problably correct. I won't need virtualbox tomorrow. So I
will uninstall it and use the latest lowlatency kernel and report back.
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I can't try it without changing of distro. @Soren, can you make a
blacklist for vboxpci vboxnetadp vboxnetflt vboxdrv, please? I tryied it
once, but I should had done something badly, because it didn't seem to
work.
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@Soren, @Jamie,
Ok, so just to confirm, this bug only happens if the virtualbox drivers
are installed and loaded? If they are not, the bug does not happen on a
bare-metal system?
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v3.14-rc2-trusty also crashes.
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https://bugs.launchpad.net/bugs/1275116
Title:
lowlatency-flavour crashes and locks up alot
Status in Virtualbox:
New
Status in “linux” p
The test I made was without virtualbox (bare-metal). In the virtualized
one I don't even have the problem with 3.13.1. So, in my view, the
problem has to do with virtual-box drivers or something related to it.
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So the 3.13.2 kernel does not seem to exhibit this bug? Is that only in
virtual-box? Can you test to see if it also resolves the bug on bare-
metal as well?
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** Also affects: linux
Importance: Undecided
Status: New
** Project changed: linux => virtualbox
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https://bugs.launchpad.net/bugs/1275116
Title:
lowlatency-flavo
It seems to work properly. But virtual-box drivers are not installed,
because dkms failed. Perhaps there lays the problem.
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Title:
l
Ok, I'm testing it. I'll tell you how it was.
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https://bugs.launchpad.net/bugs/1275116
Title:
lowlatency-flavour crashes and locks up alot
Status in “linux” package in Ubu
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