I'm not Ubuntu user but on Sabayon Linux, Thinkpad X201, Centrino 6300,
kernel 3.10.0 I don't think this is fixed. Quite simply there are long
pauses in network activity which makes interactive use a pain and
downloads slow.
For example, some ping statistics of my base station just a few feet
Can someone affected resume the actual situation with the recent
upstream kernels (3.8 / 3.9 / 3.10)
** Changed in: linux (Ubuntu Oneiric)
Status: Triaged = Invalid
** Tags removed: oneiric
** Tags removed: kernel-bug-exists-upstream
** Changed in: linux (Ubuntu Precise)
Status:
intellinuxwireless is dead
** Changed in: linux
Importance: Medium = Undecided
** Changed in: linux
Status: In Progress = New
** Changed in: linux
Remote watch: bugzilla.intellinuxwireless.org/ #2315 = None
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I'm seeing a very similar-looking intermittent packet loss issue on
Precise, with this same wireless interface (Centrino Ultimate-N 6300
[8086:4238] on a Thinkpad X201). I get the error message ping: sendmsg:
No buffer space available when attempting to ping. Asked at:
Stll visible on :
$ lspci|grep Network
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6235 (rev 24)
$ lsb_release -r
Release:13.04
$ uname -a
Linux yoyo-laptop 3.8.0-16-generic #26-Ubuntu SMP Mon Apr 1 19:52:57 UTC 2013
x86_64 x86_64 x86_64 GNU/Linux
$ sudo
I think I have the same problem on a Dell XPS 13 (Centrino Advanced-N 6235). On
12.04 with kernel 3.2, after some activity the connection drops and I have to
reboot. I tried some iwlwifi kernel module options (11n_disable=1, swcrypto=1,
bt_coex_active=0) and turning off power managment
I tried to apply the Intel patch to last ubuntu 13.04 kernel, but it
seems to me that in linux 3.8.0-13.23 package this patch is already
include. If I am correct, then this patch does not solve the bug for me.
Maybe I have a different bug.
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With the bugtracker being down, I have no clue.
I suggest that at least success/failure reports shall go here in the
meantime so that we can give then Intel developers some feedback once we
can talk to them again.
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Bugs,
Will this patch be a part of one of the next kernel (3.8 or 3.9)?
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https://bugs.launchpad.net/bugs/836250
Title:
8086:4238 [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N
The Intel wifi bugzilla is down (DNS record gone). Response from Intel:
The bugzilla has been disabled, we're working to see if we can track
things elsewhere, but it's not clear yet where we could.
I will attach the patch that was posted there, and also a backported
version of the patch for the
** Patch added: Original patch for current Linux master
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/836250/+attachment/3524314/+files/0001-iwlwifi-audit-singles-frame-from-AGG-queue-in-RS.patch
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Bugs, which is
** Patch added: Original Intel patch for current Linux master
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/836250/+attachment/3524315/+files/0001-iwlwifi-audit-singles-frame-from-AGG-queue-in-RS.patch
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Bugs,
** Patch added: 0001-iwlwifi-audit-singles-frame-from-AGG-queue-in-RS.patch
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/836250/+attachment/3524316/+files/0001-iwlwifi-audit-singles-frame-from-AGG-queue-in-RS.patch
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Test (patch attachments don't seem to work for me currently?)
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https://bugs.launchpad.net/bugs/836250
Title:
8086:4238 [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N
And here we have the adjusted patch for Ubuntu 12.04.
It works very well for me so far, connectivity feels way better.
I currently still use options iwlwifi 11n_disable=1 and haven't tried
how it is now with n mode enabled.
** Patch added: Adjusted Intel patch for the Ubuntu 12.04 kernel
I applied the above mentioned patch to rarings 3.8.0-1 and rebuilt.
Unfortunately I still need 11n_disable for a limited but usable
connection.
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https://bugs.launchpad.net/bugs/836250
There finally seems to have been a patch posted at the Intel bugtracker
fixing this particular bug. Could somebody please take a look at it and,
if necessary, update the packages accordingly?
This has been going on for ages it feels like.
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Janne Kronbäck, if you have a bug in Ubuntu, could you please file a new report
by executing the following in a terminal:
ubuntu-bug linux
For more on this, please see the Ubuntu Kernel team article:
https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies#Filing_Kernel_Bug_reports
the Ubuntu
Another thing I have noticed. The ping times to the router on the HP
Elitebook are consistently 3ms when running quantal. The working test
configurations (HP Elitebook/Lucid,HP Elitebook/Windows7,Thinkpad
T61p/Quantal) all show consistently under 1ms. This is when the
connection is working stably,
Seem to have the same problem with Centrino 1030N.
Previously on 12.04, disabling N worked. Then somewhere along the line the
network became bad again.
I upgraded to 12.10, but the problem remains, nor do the solutions above help.
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I tried iwconfig wlan3 power off (for some reason, my wireless interface
is wlan3, not wlan0)
but got:
# iwconfig wlan3 power off
Error for wireless request Set Power Management (8B2C) :
SET failed on device wlan3 ; Operation not supported.
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** Summary changed:
- [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300 poor
networking, packet loss and very slow Lenovo X201 and T500 laptops
+ 8086:4238 [Oneiric] [Regression] Intel Corporation Centrino Ultimate-N 6300
poor networking, packet loss and very slow Lenovo X201
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