@Bill
Thanks for the feedback. What you are seeing may be a new bug.
Alan and Jorge,
Are you still seeing this bug with the final release of Precise?
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There are still some problems.
After running the kernel from comment 73 for a few days, I have found
that after resuming from suspend on the X220 laptop, the wifi is very
slow to the point of not being usable. The temporary workaround is to
manually disable and re-enable wireless via network
I have a Lenovo X220 running kubuntu 12.04 (64 bit) and after upgrading
to kernel 3.2.0-24-generic it would no longer associate with my OpenWRT
router.
I can confirm that installing kernel 3.3.0-030300rc5-generic from
comment #72 allows the laptop to connect to my wireless router.
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Ok so it seems this problem might manifest either quickly or rarely
depending on the wireless router. At home the stock precise kernel works
for about a day or so and then might start showing this.
Today at the airport it happened right away (10 minutes or so), so I'm
still seeing this on the
Hi Jorge,
It would be great if you could retest the v3.3[0] kernel in a location
where the network drops quickly, like at the airport.
[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3-precise/
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That's the first thing I did. It worked fine for about the two hours
I was testing and also is working fine on the plane, so the problem
still lies somewhere between 3.2 in precise and 3.3. (Also tested
mainline 3.4 and it works there too).
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Did you ever have a drop while using the test kernel mentioned in
comment #62? I'd be surprised if that kernel fixed this issue, like I
mention in comment #65. However, it still would be good to know,
especially if you have a way to reproduce this quickly now.
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I did have a drop, it just took much longer than it did before.
I don't know why sometimes it happens right away and sometimes needs
hours, it's making testing very hit and miss, but I'll keep at it!
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Thanks, Jorge. I'm going to step through the bisect again, to see if we
missed a step.
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Wireless stops passing packets
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Hi Jorge and Alan,
I went back through the bug comments. The bisect was thrown off after I
requested that you test the linux-backports-modules-cw-3.3-precise-
generic package(Comment #15). We realized you still had it installed
and restarted the bisect(Comment #38). However, I didn't have you
Hi Alan and Jorge,
I had the kernel team review the commit that was reverted in the last test
kernel:
f8f54e190ddb4ed697036b60f5e2ae6dd45b801c
That commit is for a cryptography driver and shouldn't affect wireless
connectivity. Can you confirm that you still don't have the linux-
This one is working great on my X220.
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Ok, running that today.
alan@deep-thought:~$ uname -a
Linux deep-thought 3.2.0-20-generic #32~lp937118v1 SMP Mon Mar 26 16:50:22 UTC
2012 x86_64 x86_64 x86_64 GNU/Linux
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** Tags added: kernel-wifi
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Hi Alan and Jorge,
I was wondering if you had a chance to test the kernel mentioned in
comment #54?
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Wireless stops passing packets
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I am testing it today, so far no problems.
On Tue, Apr 10, 2012 at 10:30 AM, Joseph Salisbury
joseph.salisb...@canonical.com wrote:
I was wondering if you had a chance to test the kernel mentioned in
comment #54?
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Sorry, which exact kernel should I be testing?
There's two:-
linux-image-3.2.0-20-generic_3.2.0-20.32~lp937118v1_amd64.deb
linux-image-3.3.0-030300-generic_3.3.0-030300.201203261517_amd64.deb
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Sorry, the following should be tested:
linux-image-3.2.0-20-generic_3.2.0-20.32~lp937118v1_amd64.deb
I removed the other kernels.
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@Jorge,
Just curious if you had a chance to test the kernel mentioned in comment
#54?
Thanks in advance!
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Title:
Wireless stops passing packets
Sorry Joe,
I'm at a conference and I haven't had time to test this, I'm going off
a known good upstream Rc6 kernel, I won't be able to test until this
weekend.
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Have you had a chance to test the latest kernel mentioned in comment
#54?
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I installed it earlier, but just realised my system was booted to the
newer kernel 3.3.0-030300rc5-generic, so I'll reboot and force it to
use the one from #54 this evening. Sorry about that, I wrongly assumed
I'd get the right kernel on a reboot.
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It appears f8f54e190ddb4ed697036b60f5e2ae6dd45b801c is the first bad
commit.
I'll build a test kernel with this commit reverted to see if it is in
fact the source of the regression.
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Hi Jorge and Alan,
I built a test kernel with commit f8f54e190ddb4ed697036b60f5e2ae6dd45b801c
reverted. The kernel is located at:
http://people.canonical.com/~jsalisbury/lp937118/
Can you test out this kernel and report back if it resolves this bug?
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I also built a precise test kernel with that commit reverted. Can you also
test the precise kernel, which is available at:
http://people.canonical.com/~jsalisbury/lp937118/precise-kernel
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3.3.0-030300rc5-generic #201203221252 has dropped for me. Came back to
it after being out for 2 hours and it's exhibiting the same behaviour
again as the original bug report stated.
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3.3.0-030300rc5-generic doesn't drop, but it's really crappy.
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Same here.
On Fri, Mar 23, 2012 at 8:16 AM, Alan Pope alan.p...@canonical.com wrote:
3.3.0-030300rc5-generic doesn't drop, but it's really crappy.
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I posted the next test kernel at:
http://people.canonical.com/~jsalisbury/lp937118/
Thanks again for testing!
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Wireless stops passing
That one works great for me.
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Hi Jorge,
Thanks for updating me on IRC that the last test kernel was good. I'll
actually have a couple more test kernels since that last kernel was part
of the bisect.
I'm building a new kernel now, which is up to commit:
2ce3f2b3b1a646d82b86991c424b5121e0322cb8
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I posted the next test kernel at:
http://people.canonical.com/~jsalisbury/lp937118/
There should only be a couple more test kernels after this one. Thanks
again for testing.
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Hi Jorge and Alan,
Just curious if the latest test kernel seems to have this bug?
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This doesn't make the wireless totally useless but it makes it pretty
terrible.
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I've not noticed any drops with this kernel.
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I should have asked this before having you test kernels. Did you remove
the linux-backports-modules-cw-3.3-precise-generic package? If not, we
would want to do that to test the kernels properly.
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Thanks for the update. Since there have been no dropped packets(Even
thought the performance is terrible), I'll mark this commit as good in
the bisect and build the next kernel.
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I did too. Am rebooting to test again.
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Ah nuts. I had it installed, rebooting and trying again.
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Dropped network here on that kernel 3.3.0-030300rc5-generic
Network manager shows signal, I have an IP but no packets pass over
wlan0.
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Jorge says it sucks for him too :)
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Thanks for the update. I'll update the bisect and build a new test
kernel.
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I posted the next test kernel at:
http://people.canonical.com/~jsalisbury/lp937118/
This test kernel is up to commit:
001f3a48877a24afa7dfead84eb4678c68ab062e
Can you test that kernel and report back if it has the bug. Please test
without having the
Hi Jorge,
I posted the next test kernel at:
http://people.canonical.com/~jsalisbury/lp937118/
This test kernel is up to commit:
62d222b8c8ee0ddd3dd6921ce9c1a5667616dc1c
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Aha, this one feels much more sluggish. Name resolution is taking much
longer. But it's not totally broken like the precise kernel. Alan can
you try this one?
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Ok, I'm running Linux deep-thought 3.3.0-030300rc5-generic #201203200045
SMP Tue Mar 20 00:47:12 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux. Will
see how it goes.
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This one works too.
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Thanks, Jorge. I'm building the next kernel now.
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Hi Jorge,
I was wondering if you had a chance to gets the latest kernel, posted in
comment #24? We'd like to narrow down what exact commit fixes this bug,
so we can pull it prior to beta 2.
Thanks in advance!
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** Tags added: kernel-fixed-upstream
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Ok, that one works, next!
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Just a bug comment:
I had to apply the following patch to build the next bisected kernel:
ae942ae71934fddd0639160c24f6efa703d5784e
@Jorge, the next test kernel is building now. It will be built up to commit:
5e8063d758725a5a6f38ac34a37d13509ccea0da
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Hi Jorge,
I posted the next test kernel at:
http://people.canonical.com/~jsalisbury/lp937118/
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Thanks for testing Jorge. I'll update the bisect and build another test
kernel.
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Hi Jorge,
I posted the next test kernel at:
http://people.canonical.com/~jsalisbury/lp937118/
This test kernel is bisected up to commit:
a223c522805d4e9de4903fdd9c14588e558b2c16
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Thanks, Jorge.
I posted the first test kernel, which is available at:
http://people.canonical.com/~jsalisbury/lp937118/
This test kernel is bisected up to commit:
847854f5988a04fe7e02d2fdd4fa0df9f96360fe
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That kernel's been working for me for the past 6 hours with no issues.
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I haven't had a dropout yet with that backports package.
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Hi Alan and Jorge,
I'd like to perform a kernel bisect to identify what commit upstream
fixed this bug. Would you have the time to try a few test kernels to
confirm when the bug exists or not?
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Line em up Joseph, I'll test them.
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Yes Alan, just install the .deb and boot off your vanilla precise
kernel.
Joseph, I think you got it! Installing that package and running off the
stock kernel does the trick.
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Alan and Jorge,
Would it be possible for you to run one test. Can you try the linux-
backports-modules-cw-3.3-precise-generic package from
https://launchpad.net/ubuntu/precise/+package/linux-backports-modules-
cw-3.3-3.2.0-18-generic
The amd64 .deb is available from:
Sorry, I'm playing catchup a bit here. Do I just need to run the stock
Ubuntu kernel with that backports package installed?
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Thanks for testing Jorge. I'll take a look at the commits to see if I
can identify what fixed it in rc6. If the fix isn't easily spotted, we
can perform a bisect to find it that way.
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There was a merge of wireless patches that may have fixed this bug.
@Alan, does the bug also go away for you if your boot into v3.3-rc6?
Alan, If rc6 fixed the bug for you, I will build a precise test kernel
with the fixes in:
commit eea79e0713d94b02952f6c591b615710fd40a562
Merge: 203738e
Thank you for taking the time to file a bug report on this issue.
However, given the number of bugs that the Kernel Team receives during
any development cycle it is impossible for us to review them all.
Therefore, we occasionally resort to using automated bots to request
further testing. This is
I get this too on 3.2.0.18.28, however when I try it on mainline
3.3.0-030300rc6-generic it works.
This used to take about 10 minutes or so to show up when running the
stock 3.2.0-18.28 kernel. To test it I left an rsync running overnight
on the mainline kernel and it was rock solid.
Thinkpad
Also I suspected dd-wrt since both Alan and I use it but I went and
tested it on 2 stock Linksys APs and a coffee bar's wireless, so I am
reasonably certain this isn't a dd-wrt issue.
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** Changed in: linux (Ubuntu)
Importance: Medium = High
** Tags added: kernel-key
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Wireless stops passing packets
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Hi Jorge,
I'm not sure if you have ample time to test, but I was wondering if you
would be able to test some of the other upstream rc kernels? It would
be good to know what rc introduced the fix. That will narrow down the
number of commits we need to review.
All of the release candidates can
Ok I'm going to go to RC5, then 4, then 3 and so on.
Alan, can you start with RC1 and work your way forward? That outta help
narrow it down quickly.
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Found it right away, RC5 doesn't work but RC6 does.
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Thank you for taking the time to file a bug report on this issue.
However, given the number of bugs that the Kernel Team receives during
any development cycle it is impossible for us to review them all.
Therefore, we occasionally resort to using automated bots to request
further testing. This is
I'm running 3.2.0.17 and it's still dropping.
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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Title:
Wireless stops passing
Hi Alan,
Were you able to test the test kernel listed in comment #51 of bug
911059 ? If so, did that kernel help?
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Title:
Wireless stops
Thank you for taking the time to file a bug report on this issue.
However, given the number of bugs that the Kernel Team receives during
any development cycle it is impossible for us to review them all.
Therefore, we occasionally resort to using automated bots to request
further testing. This is
This may be a duplicate of 911059
There is a test kernel listed in comment #51. Can you test that kernel
and report back if it resolves your issue?
** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
** Tags added: kernel-da-key
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** Changed in: linux (Ubuntu)
Status: New = Confirmed
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