No Wifi on Xubuntu 12.04, Intel Centrino wireless-N 1000
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
| linux (Ubuntu) |
Medium
|
Unassigned |
Bug Description
Acer 1810 TZ; wifi was ok on my previous installation(Ubuntu 10.10).
Fresh install of Xubuntu 12.04, fully updated : cannot connect to my wifi network (Freebox V5)
I have seen here several bug reports that seem to challenge this chipset (centrino wireless-N), but nothing identical.
> https:/
> https:/
Within two hours of testing various (including deactivating wifi N), it hung the network twice for a few seconds (the password is then OK).
He will keep searching and asking for more network password regularly (WPA-TKIP).
As this bug affects (X)Ubuntu 12.04, it is not possible to use it on my laptop.
I have not found any workaround for this problem.
dmesg|grep iwl
[ 3.519565] iwlwifi 0000:02:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
[ 3.519577] iwlwifi 0000:02:00.0: setting latency timer to 64
[ 3.519613] iwlwifi 0000:02:00.0: pci_resource_len = 0x00002000
[ 3.519617] iwlwifi 0000:02:00.0: pci_resource_base = ffffc9000067c000
[ 3.519621] iwlwifi 0000:02:00.0: HW Revision ID = 0x0
[ 3.519717] iwlwifi 0000:02:00.0: irq 44 for MSI/MSI-X
[ 3.519776] iwlwifi 0000:02:00.0: Detected Intel(R) Centrino(R) Wireless-N 1000 BGN, REV=0x6C
[ 3.557500] iwlwifi 0000:02:00.0: L1 Enabled; Disabling L0S
[ 3.577551] iwlwifi 0000:02:00.0: device EEPROM VER=0x15d, CALIB=0x6
[ 3.577557] iwlwifi 0000:02:00.0: Device SKU: 0X50
[ 3.577561] iwlwifi 0000:02:00.0: Valid Tx ant: 0X1, Valid Rx ant: 0X3
[ 3.582693] iwlwifi 0000:02:00.0: Tunable channels: 13 802.11bg, 0 802.11a channels
[ 4.018819] iwlwifi 0000:02:00.0: loaded firmware version 39.31.5.1 build 35138
[ 4.057470] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[ 4.346762] iwlwifi 0000:02:00.0: L1 Enabled; Disabling L0S
[ 4.406942] iwlwifi 0000:02:00.0: L1 Enabled; Disabling L0S
Sea also joinged logs
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-firmware 1.79
ProcVersionSign
Uname: Linux 3.2.0-27-generic x86_64
ApportVersion: 2.0.1-0ubuntu11
Architecture: amd64
Date: Sun Aug 5 19:52:50 2012
Dependencies:
InstallationMedia: Xubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
PackageArchitec
ProcEnviron:
LANGUAGE=fr:en
TERM=xterm
PATH=(custom, no user)
LANG=fr_FR.UTF-8
SHELL=/bin/bash
SourcePackage: linux-firmware
UpgradeStatus: No upgrade log present (probably fresh install)
Joseph Salisbury (jsalisbury) wrote : | #4 |
Would it be possible for you to test the latest upstream kernel? Refer to https:/
Once you've tested the upstream kernel, please remove the 'needs-
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-
If the mainline kernel does not fix this bug, please add the tag: 'kernel-
If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".
Thanks in advance.
[0] http://
affects: | linux-firmware (Ubuntu) → linux (Ubuntu) |
tags: | added: needs-upstream-testing |
Changed in linux (Ubuntu): | |
status: | New → Incomplete |
importance: | Undecided → Medium |
Hello,
I did the tests requested, here is the trace of my manipulations:
---------------
christophe@
christophe@
-rw-rw-r-- 1 christophe christophe 12261522 août 6 18:45 linux-image-
-rw-rw-r-- 1 christophe christophe 24295412 août 6 18:45 linux-image-
christophe@
[sudo] password for christophe:
Selecting previously unselected package linux-image-
(Lecture de la base de données... 200045 fichiers et répertoires déjà installés.)
Dépaquetage de linux-image-
Done.
Selecting previously unselected package linux-image-
Dépaquetage de linux-image-
Paramétrage de linux-image-
Running depmod.
update-initramfs: deferring update (hook will be called later)
Examining /etc/kernel/
run-parts: executing /etc/kernel/
update-initramfs: Generating /boot/initrd.
run-parts: executing /etc/kernel/
run-parts: executing /etc/kernel/
run-parts: executing /etc/kernel/
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-
Found initrd image: /boot/initrd.
Found linux image: /boot/vmlinuz-
Found initrd image: /boot/initrd.
Found linux image: /boot/vmlinuz-
Found initrd image: /boot/initrd.
Found memtest86+ image: /boot/memtest86
done
Paramétrage de linux-image-
Running depmod.
update-initramfs: deferring update (hook will be called later)
Examining /etc/kernel/
run-parts: executing /etc/kernel/
update-initramfs: Generating /boot/initrd.
run-parts: executing /etc/kernel/
run-parts: executing /etc/kernel/
run-parts: executing /etc/kernel/
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-
Found initrd image: /boot/initrd.
Found linux image: /boot/vmlinuz-
Found initrd image...
tags: |
added: kernel-bug-exists-upstream removed: needs-upstream-testing |
Changed in linux (Ubuntu): | |
status: | Incomplete → Confirmed |
Same bug confirmed on Sony VAIO VPC-EB3E1E, with same Wifi chipset : Intel(R) Centrino(R) Wireless-N 1000
Fortunately, the same workaround can resolve the issue by limiting wifi modes to B/G
This bug still exists. How has no one done anything about it yet?
Running Ubuntu 13.04 and I can confirm this STILL EXISTS.
I can confirm that the bug is still present in 3.2.0-40.
I noticed when updating the kernel, the paliatif disappeared and I had to reinstall it.
Fortunately, it is still effective.
Linux altair 3.2.0-40-generic #64-Ubuntu SMP Mon Mar 25 21:22:10 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Christopher M. Penalver (penalvch) wrote : | #9 |
Christophe CATARINA, could you please confirm this issue exists with the latest development release of Ubuntu? ISO images are available from http://
apport-collect -p linux <replace-
Also, could you please test the latest upstream kernel available following https:/
kernel-
kernel-
where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-
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-
If the mainline kernel does not fix this bug, please add the following tags:
kernel-
kernel-
As well, please remove the tag:
needs-upstream-
If you are unable to test the mainline kernel, please comment as to why specifically you were unable to test it and add the following tags:
kernel-
kernel-
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.
tags: | added: needs-kernel-logs needs-upstream-testing |
Changed in linux (Ubuntu): | |
status: | Confirmed → Incomplete |
Launchpad Janitor (janitor) wrote : | #10 |
[Expired for linux (Ubuntu) because there has been no activity for 60 days.]
Changed in linux (Ubuntu): | |
status: | Incomplete → Expired |
I finally found a workaround based on limiting wifi to mode wifi G.
In a terminal :
echo "options iwlwifi 11n_disable = 1" | sudo tee / etc / modprobe.d / iwlwifi.conf
sudo modprobe -rfv iwlwifi
sudo modprobe iwlwifi
Now, the wifi works, even if limited in speed.