[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1167019
** Changed in: network-manager (Ubuntu)
Status: Confirmed => Invalid
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Title:
wifi packet loss on intel Centrino Wireless-N 1000
To
I had to downgrade to latest 3.10 kernel due to some other issues, but i
managed to compile it with IWLWIFI_DEBUG enabled.
I've attached disconnect_debug.log containing log data from 2 disconnects
(syslog entries and iw event -t entries).
** Attachment added: Contains debug info from 2
I have installed the laest 3.11 kernel (3.11.0-999-generic #201307150405 SMP
Mon Jul 15 08:06:42 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux) and so far there
were no connection drops.
However i see these errors in syslog when the connection freezes or stalls
for a while (no idea if it's related or
I am running ubuntu 12.04 with all latest updates and have intalled the daily
build kernel: 3.10.0-031000-generic #201306301935 SMP Sun Jun 30 23:36:16 UTC
2013 x86_64 x86_64 x86_64 GNU/Linux
from kernel packages:
linux-headers-3.10.0-999_3.10.0-999.201307110431_all.deb
** Attachment added: lspci.log
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1167019/+attachment/3721498/+files/lspci.log
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Title:
I can confirm this bug. It's really quite annoying. For me it started with 3.2
kernel (if i recall correctly) and did not work on any kernel i tried after
that.
I've tried with wireless N disabled and it does not disconnect that often, but
still makes it a pain to use.
I've updated wifi
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: network-manager (Ubuntu)
Status: New = Confirmed
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Hi Alan,
Just curious if you had a chance to test any of the kernels we discussed
in Oakland. If needed, I can provide a list of kernels to test.
It's probably also best to install the latest updates to confirm this
bug still exists as well.
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NetworkManager doesn't push packets on wifi. Could you try to see what
happens to the routing table when you can't reach things?
ip route
The only thing I can say is that this is is most likely not
NetworkManager, which just establishes the connections. It definitely
needs more investigation.
Alan, do you happen to have this laptop in Oakland this week?
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Title:
wifi packet loss on intel Centrino Wireless-N 1000
To manage
Joseph, I do, yes. Feel free
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Title:
wifi packet loss on intel Centrino Wireless-N 1000
To manage notifications about this bug go to:
The fact that the Raring kernel does not exhibit the bug when installed
on Precise indicates an issue with a package other than the kernel.
I've added the network-manager task. We probably want to have
foundations review the bug to get their feedback.
** Also affects: network-manager (Ubuntu)
Ok, Spent the day yesterday on wireless with 802.11n disabled by adding
this to /etc/modprobe.d/iwlwifi.conf
options iwlwifi 11n_disable=1 led_mode=1 swcrypto=1
It didn't drop my ssh connection at all during that time.
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Thanks for the update, Alan. It sounds like you are seeing this with
the Precise kernel as well per comment #15. Do you think you had 11n
disabled in the past when you didn't see this in Precise?
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If I boot to a stock precise install (kernel 3.2) I do _not_ get this
problem.
I don't recall ever having disabled wireless n.
In fact I just checked my backups of this machine and the oldest one I
have is from September 2012, running precise 3.2.0-29-generic. There's
no setting in
Do you still get this issue if you run a 3.2 kernel on Raring, like
mentioned in comment #15? If so, it might be a good test to try the
Raring kernel on a Precise install. Do you have the option of putting
Precise on this machine to perform this test? I would expect the bug to
happen in this
Ok. Booted into a precise install and ran 3.2 kernel (default from
install) and it's fine. Also installed 3.8.0-18-generic kernel from
raring
(https://launchpad.net/ubuntu/+source/linux/3.8.0-18.28/+build/4486060)
, and that seems fine too.
So that implies something other than the kernel has
Just to confirm, did you re-enable 11n for your tests?
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Title:
wifi packet loss on intel Centrino Wireless-N 1000
To manage notifications about
To clarify I am seeing working fine on precise clean install with
precise 3.2 kernel and raring 3.8 kernel. I have seen the issue on this
same machine with an up to date precise install. So the theory is it
regresses during the precise lifecycle. As I have not updated yet, it
therefore follows
I never disabled 11n on my precise usb install. Only on my raring ssd
install.
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Title:
wifi packet loss on intel Centrino Wireless-N 1000
To
3.5.0-23-generic (Ubuntu 12.04.2 live USB) works fine. Small amount of
packet loss compared to previous kernel attempts.
My traceroute [v0.80]
ubuntu (0.0.0.0) Sat Apr 13 22:18:46 2013
Keys: Help Display mode Restart
.. but still enough packet loss to drop an ssh connection annoyinging
frequently.
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Title:
wifi packet loss on intel Centrino Wireless-N 1000
To
Booted to a 12.04 (not .1 or .2) iso and spent ages connected to ssh
(while installing to another USB stick) and didn't drop my ssh
connection once.
So 3.2.0-23-generic seems okay.
After install finished, I booted back into Ubuntu 13.04 running kernel
3.9.0-030900rc6-generic and it dropped the
Back on raring, using kernel 3.2.0-030200-generic (because 3.2 was so
good under precise) I still get the same connection drop. So I'm
officially confused now.
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Back on raring, using kernel 3.2.0-030200-generic (because 3.2 was so
good under precise) I still get the same connection drop. So I'm
officially confused now.
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I will try that kernel.
I don't know how long it's been happening. Unfortunately bug 1157114
means I rarely take the laptop out of the docking station, so it's
mostly on a wired network.
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** Tags added: kernel-bug-exists-upstream
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Title:
wifi packet loss on intel Centrino Wireless-N 1000
To manage notifications about this bug go
wpasupplicant 2.0 from a PPA pointed out at bug #1099755 might be
relevant. That's apparently related to connection drops with specific
access points / environments.
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Tested wpasupplicant 2.0 from the PPA Timo suggested using the stock
raring kernel 3.8.0-17 but unfortunately it made no difference.
Also tried upstream 3.9 as requested and that too makes no difference.
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I should point out I have two access points at opposite ends of the
house, with the same ESSID. The one nearest my laptop right now is the
only one it can see. It's a netgear wndr3700 running dd-wrt. The other
one is the same model but running openwrt.
The fact remains a macbook pro sat next to
I'd like to perform a bisect to figure out what commit caused this
regression. It would be very helpful to know the earliest kernel where
the issue started happening as well as the latest kernel that did not
have this issue.
Can you test the following kernels and report back? We are looking for
Tested those 3 kernels and unfortunately the same problem happens on all
of them. Results attached.
** Attachment added: bisect.tgz
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1167019/+attachment/3638891/+files/bisect.tgz
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Incidentally while booted to 3.8.0-030800rc1-generic my disk became full
due to bug 811604 with /var/log/uvcdynctrl-udev.log spammed up to
55GB...
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Did this just start happening after a recent update, or has it always
happened on Raring?
** Changed in: linux (Ubuntu)
Importance: Undecided = High
** Tags added: kernel-da-key
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Also, would it be possible for you to test the latest upstream kernel?
Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the
latest v3.9 kernel[0]. You will need to install both the linux-image and
linux-image-extra .deb packages.
If this bug is fixed in the mainline kernel,
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