wireless connection keeps disconnecting after 15-20 minutes

[Medya]

**Workaround**
sudo rmmod iwlagn
sudo modprobe iwlagn bt_coex_active=0

Ubuntu 11.10 , 6bit , Toshiba Sattelite Laptop
Network controller [0280]: Intel Corporation Centrino Wireless-N + WiMAX 6150 [8086:0885] (rev 67)
Kernel Version 3.3.0-030300rc1-generic

wireless internet connection keeps disconnecting every 20 minutes or 15 minutes and I have to reconnect :

I installed this Kernel version (3.3.0-030300rc1-generic ) because of another bug that it used to crash, and this kernel version is the only version that it wont crash but it has internet problem .
here is the other bug that I am reffering to :
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/918842
---
ApportVersion: 1.23-0ubuntu4
Architecture: amd64DistroRelease: Ubuntu 11.10InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
Package: linux (not installed)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bashTags: oneiric running-unity
Uname: Linux 3.3.0-030300rc1-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernelUpgradeStatus: Upgraded to oneiric on 2011-10-15 (100 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare vboxusers
---
ApportVersion: 1.23-0ubuntu4
Architecture: amd64DistroRelease: Ubuntu 11.10InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
Package: linux (not installed)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bashTags: oneiric running-unity
Uname: Linux 3.3.0-030300rc1-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernelUpgradeStatus: Upgraded to oneiric on 2011-10-15 (100 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare vboxusers

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 920204

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Fabio Marconi (fabiomarconi)]

Hello Medya
Please reproduce the bug and attach here the files:
/var/log/kern.log
/var/log/dmesg
Thanks
Fabio
---
Ubuntu Bug Squad volunteer triager
http://wiki.ubuntu.com/BugSquad

[Fabio Marconi (fabiomarconi)]

Hello,
no more needed, as it seems fixed upstream, try suggested workaround or wait for the fix in the kernel.
http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2325

[Medya (medya)]

those commands dont work on mine , it says NOT FOUND

medya@medya-Satellite-P745:~$ sudo rmmod iwlagn
[sudo] password for medya:
ERROR: Module iwlagn does not exist in /proc/modules
medya@medya-Satellite-P745:~$ sudo modprobe iwlagn bt_coex_active=0
FATAL: Module ucode_alternative=/lib/firmware/iwlwifi_6050_4.ucode not found.
medya@medya-Satellite-P745:~$

[Medya (medya)]

also I should say , when I change to kernel version 2.6 , the problem gets sloved but I need kernel 3.3 for another problem that I have with 2.6

[Anton Anikin (anton-anikin)]

I have the same problem with 3.3 kernels.
3.2 kernel works fine.

[penalvch (penalvch)]

Medya, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.11-rc5

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.