Unkown symbol while loading iwl3945

[tonfa]

with linux-backports-modules 2.6.27-7.6, I can't load iwl3945 anymore (unknown symbol on loading).
[68005.582958] iwl3945: disagrees about version of symbol lbm_cw___ieee80211_get_assoc_led_name
[68005.582984] iwl3945: Unknown symbol lbm_cw___ieee80211_get_assoc_led_name
[68005.583584] iwl3945: Unknown symbol lbm_cw_print_ssid

[Geek87 (geek87)]

Same for me.

[Fioravanti Diego (dfioravanti)]

same for me, but dmesg response different error

[Ivan Stetsenko (stetzen)]

Similar problem for me.

stetzen@stetzen-laptop:~$ sudo modprobe iwl3945
FATAL: Error inserting iwl3945 (/lib/modules/2.6.27-7-generic/updates/iwl3945.ko): Unknown symbol in module, or unknown parameter (see dmesg)

stetzen@stetzen-laptop:~$ dmesg | grep iwl
[ 17.901093] iwl3945: Unknown symbol lbm_cw_print_ssid
[ 646.163898] iwl3945: Unknown symbol lbm_cw_print_ssid
[ 703.647053] iwl3945: Unknown symbol lbm_cw_print_ssid
[ 777.757552] iwl3945: Unknown symbol lbm_cw_print_ssid

stetzen@stetzen-laptop:~$ lspci | grep Wire
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)

stetzen@stetzen-laptop:~$ uname -a
Linux stetzen-laptop 2.6.27-7-generic #1 SMP Tue Nov 4 19:33:20 UTC 2008 i686 GNU/Linux

stetzen@stetzen-laptop:~$ dpkg -l | grep linux-backport
ii linux-backports-modules-2.6.27-7-generic 2.6.27-7.6 Ubuntu supplied Linux modules for version 2.6.27 on x86
ii linux-backports-modules-intrepid 2.6.27.7.11 Generic Linux backported drivers.
ii linux-backports-modules-intrepid-generic 2.6.27.7.11 Backported drivers for generic kernel image

It is a Lenovo R61i laptop, wireless does not work at all.

[Marios Karaoulis (marios-hellas-23)]

same here. After updating iwl3945 can't load. With previous version no problem.

modprobe iwl3945
FATAL: Error inserting iwl3945 (/lib/modules/2.6.27-7-generic/updates/iwl3945.ko): Unknown symbol in module, or unknown parameter (see dmesg)

dmesg
.....
[ 4827.114080] iwl3945: Unknown symbol lbm_cw_print_ssid

[Tank (tank85)]

Same for me.

[mxyzptlk (mxyzptlk)]

Add another log to the fire -- my iwl3945 has gone out as well.

Has anyone removed backports and tried again? I may, and will report back if it helps. IF it helps.

[tonfa (bboissin)]

On Fri, Nov 07, 2008 at 07:27:01PM -0000, J Wood wrote:
> Add another log to the fire -- my iwl3945 has gone out as well.
>
> Has anyone removed backports and tried again? I may, and will report
> back if it helps. IF it helps.

It should help. Personally I downgraded backports to the last working
deb and put it on hold until an update is pushed.

--
:wq

[mxyzptlk (mxyzptlk)]

Removing linux-backports-modules (intrepid, generic, etc.) gave me back my wireless.

[ankurnath (ankurnath)]

Removing linux-backports-modules helped me too.

[Marios Karaoulis (marios-hellas-23)]

Removing linux-backports-modules helped me too.

[pablomme (pablomme)]

This bug shouldn't be marked as duplicate, more likely it's the other way around. There is more info in this entry than in #295597 , there are more subscribed people, and this one is older. Marking it as duplicate hides it from search results, so I don't think this is a good call.

On another note, what about people who need linux-backports-modules? In Intrepid I apparently need it to circumvent bug #285128 , so removing it is not a solution for everyone.

[[e-mail] (hilbert-deactivatedaccount-deactivatedaccount)]

See bug #295597, it describes how to solve the problems without removing the linux-backports-modules (by downgrading one version).

[tonfa (bboissin)]

Still happens with 2.6.27-8.7

[Marios Karaoulis (marios-hellas-23)]

after updating to 2.6.27-8.7 i can't use my wifi card. Same problem.

[pablomme (pablomme)]

Try downloading the previous backports module:

http://www.mirrorservice.org/sites/archive.ubuntu.com/ubuntu/pool/main/l/linux-backports-modules-2.6.27/linux-backports-modules-2.6.27-7-generic_2.6.27-7.4_i386.deb

Install it using Gdebi (ie. double-clicking on it or opening it directly from Firefox). Then go to System > Administration > Synaptic Package Manager, locate linux-backports-modules in the package list, select it, and click Packages > Lock Version. Then restart and your wireless card should be OK for the time being, until this bug is fixed.

[Fioravanti Diego (dfioravanti)]

Same problem with 2.6.27-8.7

[pablomme (pablomme)]

Sorry, my previous comment is nonsense. If you want to circumvent the problem, do one of:

1] If you don't need the backports module, remove it.

2] If you do need the backports module, either:

 2a] Downgrade your kernel image package to 2.6.27-7, install version 2.6.27-7.4 of the backports,
     and pin the version of these packages in Synaptic (Package > Fix Version).

 2b] If you really want to stick to kernel 2.6.27-8, install version 2.6.27-7.4 of the
     linux-backports-modules-2.6.27-7-generic package, pin it in Synaptic, and also install package
     linux-backports-modules-intrepid, which will install version 2.6.27-8.7 of the backports. Then on
     a terminal type:
     1$ cd /lib/modules/2.6.27-8-generic/
     2$ sudo mv updates backup_updates
     3$ sudo ln -s ../2.6.27-7-generic/updates
     which effectively replaces one with the other so that Ubuntu "believes" it's using 2.6.27-8 but actually
     it's using 2.6.27-7. It's ugly, yes.
     Then reboot your computer and you should have stable wireless again. Chances are this may not work
     if another backported module is in use which clashes with the ABI of 2.6.27-8, but iwl3945 seems OK
     about this -- the module has certainly loaded, I'm using it at the moment.

     If kernel 2.6.27-9 is released without solving this issue you may need to repeat the commands
     above, replacing the "8" in step 1 with a "9". But I certainly hope it is solved by then.

Hope this helps.

[Charlie Figura (cfigura)]

Just tried the latest updates for 2.6.27-10 - still same problem, iwl3945 won't load.

[pablomme (pablomme)]

Confirming for 2.6.27-10. Also note that my workaround 2b of comment #23 above breaks because of version clashes ("iwl3945: disagrees about version of symbol struct_module"). So do not upgrade if you were relying on that.

[Fioravanti Diego (dfioravanti)]

Confirming for 2.6.27-10, it still not working

[Marios Karaoulis (marios-hellas-23)]

Very annoying. After so much time, this problem is still here. Isn't it important?

[pablomme (pablomme)]

> Very annoying. After so much time, this problem is still here. Isn't it important?

It only affects people who have activated the intrepid-proposed repository, which I guess is a minority of users. I think this should be fixed by the time a new version of the kernel appears in intrepid-updates -- hopefully before that.

[Marios Karaoulis (marios-hellas-23)]

it's and on the 2.6.27-6 version...

[tdflanders (thomasdelbeke)]

This is fixed now:

thomas@thomas-laptop:~$ lsb_release -rd ; uname -a ; apt-cache policy linux linux-source linux-source-2.6.27 linux-headers-2.6.27-10-generic linux-image-2.6.27-10-generic linux-restricted-modules linux-backports-modules-2.6.27-10-generic network-manager
Description: Ubuntu 8.10
Release: 8.10
Linux thomas-laptop 2.6.27-10-generic #1 SMP Fri Nov 21 12:00:22 UTC 2008 i686 GNU/Linux
linux:
  Installed: 2.6.27.10.13
  Candidate: 2.6.27.10.13
  Version table:
 *** 2.6.27.10.13 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/restricted Packages
        100 /var/lib/dpkg/status
     2.6.27.7.11 0
        500 http://gb.archive.ubuntu.com intrepid/restricted Packages
linux-source:
  Installed: 2.6.27.10.13
  Candidate: 2.6.27.10.13
  Version table:
 *** 2.6.27.10.13 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
     2.6.27.7.11 0
        500 http://gb.archive.ubuntu.com intrepid/main Packages
linux-source-2.6.27:
  Installed: 2.6.27-10.20
  Candidate: 2.6.27-10.20
  Version table:
 *** 2.6.27-10.20 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
     2.6.27-7.16 0
        500 http://gb.archive.ubuntu.com intrepid-updates/main Packages
        500 http://security.ubuntu.com intrepid-security/main Packages
     2.6.27-7.14 0
        500 http://gb.archive.ubuntu.com intrepid/main Packages
linux-headers-2.6.27-10-generic:
  Installed: 2.6.27-10.20
  Candidate: 2.6.27-10.20
  Version table:
 *** 2.6.27-10.20 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
linux-image-2.6.27-10-generic:
  Installed: 2.6.27-10.20
  Candidate: 2.6.27-10.20
  Version table:
 *** 2.6.27-10.20 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
linux-restricted-modules:
  Installed: 2.6.27.10.13
  Candidate: 2.6.27.10.13
  Version table:
 *** 2.6.27.10.13 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/restricted Packages
        100 /var/lib/dpkg/status
     2.6.27.7.11 0
        500 http://gb.archive.ubuntu.com intrepid/restricted Packages
linux-backports-modules-2.6.27-10-generic:
  Installed: 2.6.27-10.8
  Candidate: 2.6.27-10.8
  Version table:
 *** 2.6.27-10.8 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
network-manager:
  Installed: 0.7~~svn20081018t105859-0ubuntu1
  Candidate: 0.7~~svn20081018t105859-0ubuntu1
  Version table:
 *** 0.7~~svn20081018t105859-0ubuntu1 0
        500 http://gb.archive.ubuntu.com intrepid/main Packages
        100 /var/lib/dpkg/status
thomas@thomas-laptop:~$

[Psy[H[] (vovik-wfa)]

I see no fix. With latest 2.6.27-10 packages I still get unknown symbol

[tdflanders (thomasdelbeke)]

Fixed in Jaunty:

thomas@ubuntu:~$ lsb_release -rd ; uname -a ; apt-cache policy linux linux-source linux-source-2.6.27 linux-headers-2.6.27-8-generic linux-image-2.6.27-8-generic linux-restricted-modules-2.6.27-8-generic linux-backports-modules-2.6.27-8-generic
Description: Ubuntu jaunty (development branch)
Release: 9.04
Linux ubuntu 2.6.27-8-generic #1 SMP Thu Nov 6 17:33:54 UTC 2008 i686 GNU/Linux
linux:
  Installed: 2.6.27.8.12
  Candidate: 2.6.27.8.12
  Version table:
 *** 2.6.27.8.12 0
        100 /var/lib/dpkg/status
     2.6.27.7.11 0
        500 http://archive.ubuntu.com jaunty/restricted Packages
linux-source:
  Installed: 2.6.27.8.12
  Candidate: 2.6.27.8.12
  Version table:
 *** 2.6.27.8.12 0
        100 /var/lib/dpkg/status
     2.6.27.7.11 0
        500 http://archive.ubuntu.com jaunty/main Packages
linux-source-2.6.27:
  Installed: 2.6.27-9.18
  Candidate: 2.6.27-9.18
  Version table:
 *** 2.6.27-9.18 0
        500 http://archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
linux-headers-2.6.27-8-generic:
  Installed: 2.6.27-8.17
  Candidate: 2.6.27-8.17
  Version table:
 *** 2.6.27-8.17 0
        100 /var/lib/dpkg/status
linux-image-2.6.27-8-generic:
  Installed: 2.6.27-8.17
  Candidate: 2.6.27-8.17
  Version table:
 *** 2.6.27-8.17 0
        100 /var/lib/dpkg/status
linux-restricted-modules-2.6.27-8-generic:
  Installed: 2.6.27-8.13
  Candidate: 2.6.27-8.13
  Version table:
 *** 2.6.27-8.13 0
        100 /var/lib/dpkg/status
linux-backports-modules-2.6.27-8-generic:
  Installed: 2.6.27-8.7
  Candidate: 2.6.27-8.7
  Version table:
 *** 2.6.27-8.7 0
        100 /var/lib/dpkg/status
thomas@ubuntu:~$

[tdflanders (thomasdelbeke)]

Fixed in Intrepid:

thomas@thomas-laptop:~$ lsb_release -rd ; uname -a ; apt-cache policy linux linux-source linux-source-2.6.27 linux-headers-2.6.27-8-generic linux-image-2.6.27-8-generic linux-restricted-modules-2.6.27-8-generic linux-backports-modules-2.6.27-8-generic
Description: Ubuntu 8.10
Release: 8.10
Linux thomas-laptop 2.6.27-10-generic #1 SMP Fri Nov 21 12:00:22 UTC 2008 i686 GNU/Linux
linux:
  Installed: 2.6.27.10.13
  Candidate: 2.6.27.10.13
  Version table:
 *** 2.6.27.10.13 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/restricted Packages
        100 /var/lib/dpkg/status
     2.6.27.7.11 0
        500 http://gb.archive.ubuntu.com intrepid/restricted Packages
linux-source:
  Installed: 2.6.27.10.13
  Candidate: 2.6.27.10.13
  Version table:
 *** 2.6.27.10.13 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
     2.6.27.7.11 0
        500 http://gb.archive.ubuntu.com intrepid/main Packages
linux-source-2.6.27:
  Installed: 2.6.27-10.20
  Candidate: 2.6.27-10.20
  Version table:
 *** 2.6.27-10.20 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
     2.6.27-7.16 0
        500 http://gb.archive.ubuntu.com intrepid-updates/main Packages
        500 http://security.ubuntu.com intrepid-security/main Packages
     2.6.27-7.14 0
        500 http://gb.archive.ubuntu.com intrepid/main Packages
linux-headers-2.6.27-8-generic:
  Installed: 2.6.27-8.17
  Candidate: 2.6.27-8.17
  Version table:
 *** 2.6.27-8.17 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
linux-image-2.6.27-8-generic:
  Installed: 2.6.27-8.17
  Candidate: 2.6.27-8.17
  Version table:
 *** 2.6.27-8.17 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
linux-restricted-modules-2.6.27-8-generic:
  Installed: 2.6.27-8.13
  Candidate: 2.6.27-8.13
  Version table:
 *** 2.6.27-8.13 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/restricted Packages
        100 /var/lib/dpkg/status
linux-backports-modules-2.6.27-8-generic:
  Installed: 2.6.27-8.7
  Candidate: 2.6.27-8.7
  Version table:
 *** 2.6.27-8.7 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
thomas@thomas-laptop:~$

[tdflanders (thomasdelbeke)]

root@thomas-laptop:/home/thomas# lsb_release -rd ; uname -a ; modprobe iwl3945
Description: Ubuntu 8.10
Release: 8.10
Linux thomas-laptop 2.6.27-10-generic #1 SMP Fri Nov 21 12:00:22 UTC 2008 i686 GNU/Linux
WARNING: Error inserting lbm_cw_mac80211 (/lib/modules/2.6.27-10-generic/updates/lbm_cw-mac80211.ko): Unknown symbol in module, or unknown parameter (see dmesg)
root@thomas-laptop:/home/thomas#

root@ubuntu:/home/thomas# lsb_release -rd ; uname -a ; modprobe iwl3945

Description: Ubuntu jaunty (development branch)
Release: 9.04
Linux ubuntu 2.6.27-8-generic #1 SMP Thu Nov 6 17:33:54 UTC 2008 i686 GNU/Linux
FATAL: Error inserting iwl3945 (/lib/modules/2.6.27-8-generic/updates/iwl3945.ko): Unknown symbol in module, or unknown parameter (see dmesg)
root@ubuntu:/home/thomas#
root@ubuntu:/home/thomas#

[tdflanders (thomasdelbeke)]

thomas@thomas-laptop:~$ lsb_release -rd ; uname -a ; modprobe iwl3945
Description: Ubuntu 8.10
Release: 8.10
Linux thomas-laptop 2.6.27-10-generic #1 SMP Fri Nov 21 12:00:22 UTC 2008 i686 GNU/Linux
WARNING: Error inserting lbm_cw_cfg80211 (/lib/modules/2.6.27-10-generic/updates/lbm_cw-cfg80211.ko): Operation not permitted
WARNING: Error inserting lbm_cw_mac80211 (/lib/modules/2.6.27-10-generic/updates/lbm_cw-mac80211.ko): Operation not permitted
thomas@thomas-laptop:~$

thomas@ubuntu:~$ lsb_release -rd ; uname -a ; modprobe iwl3945
Description: Ubuntu jaunty (development branch)
Release: 9.04
Linux ubuntu 2.6.27-8-generic #1 SMP Thu Nov 6 17:33:54 UTC 2008 i686 GNU/Linux
FATAL: Error inserting iwl3945 (/lib/modules/2.6.27-8-generic/updates/iwl3945.ko): Operation not permitted
thomas@ubuntu:~$

[tdflanders (thomasdelbeke)]

I think this might be ufw related:

thomas@thomas-laptop:~$ lsb_release -rd ; uname -a ; apt-cache policy linux linux-backports-modules-2.6.27-8-generic ufw ; dmesg > dmesg-intrepid.log
Description: Ubuntu 8.10
Release: 8.10
Linux thomas-laptop 2.6.27-10-generic #1 SMP Fri Nov 21 12:00:22 UTC 2008 i686 GNU/Linux
linux:
  Installed: 2.6.27.10.13
  Candidate: 2.6.27.10.13
  Version table:
 *** 2.6.27.10.13 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/restricted Packages
        100 /var/lib/dpkg/status
     2.6.27.7.11 0
        500 http://gb.archive.ubuntu.com intrepid/restricted Packages
linux-backports-modules-2.6.27-8-generic:
  Installed: 2.6.27-8.7
  Candidate: 2.6.27-8.7
  Version table:
 *** 2.6.27-8.7 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
ufw:
  Installed: 0.23.2
  Candidate: 0.23.2
  Version table:
 *** 0.23.2 0
        500 http://gb.archive.ubuntu.com intrepid/main Packages
        100 /var/lib/dpkg/status
thomas@thomas-laptop:~$

[tdflanders (thomasdelbeke)]

thomas@ubuntu:~$ lsb_release -rd ; uname -a ; apt-cache policy linux linux-backports-modules-2.6.27-8-generic ufw ; dmesg > dmesg-jaunty.log
Description: Ubuntu jaunty (development branch)
Release: 9.04
Linux ubuntu 2.6.27-8-generic #1 SMP Thu Nov 6 17:33:54 UTC 2008 i686 GNU/Linux
linux:
  Installed: 2.6.27.8.12
  Candidate: 2.6.27.8.12
  Version table:
 *** 2.6.27.8.12 0
        100 /var/lib/dpkg/status
     2.6.27.7.11 0
        500 http://archive.ubuntu.com jaunty/restricted Packages
linux-backports-modules-2.6.27-8-generic:
  Installed: 2.6.27-8.7
  Candidate: 2.6.27-8.7
  Version table:
 *** 2.6.27-8.7 0
        100 /var/lib/dpkg/status
ufw:
  Installed: 0.23.2
  Candidate: 0.23.2
  Version table:
 *** 0.23.2 0
        500 http://archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
thomas@ubuntu:~$
thomas@ubuntu:~$

[tdflanders (thomasdelbeke)]

root@ubuntu:/home/thomas# lsb_release -rd ; uname -a ; apt-cache policy linux linux-backports-modules-2.6.27-8-generic ufw ; ufw status
Description: Ubuntu jaunty (development branch)
Release: 9.04
Linux ubuntu 2.6.27-8-generic #1 SMP Thu Nov 6 17:33:54 UTC 2008 i686 GNU/Linux
linux:
  Installed: 2.6.27.8.12
  Candidate: 2.6.27.8.12
  Version table:
 *** 2.6.27.8.12 0
        100 /var/lib/dpkg/status
     2.6.27.7.11 0
        500 http://archive.ubuntu.com jaunty/restricted Packages
linux-backports-modules-2.6.27-8-generic:
  Installed: 2.6.27-8.7
  Candidate: 2.6.27-8.7
  Version table:
 *** 2.6.27-8.7 0
        100 /var/lib/dpkg/status
ufw:
  Installed: 0.23.2
  Candidate: 0.23.2
  Version table:
 *** 0.23.2 0
        500 http://archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
Status: not loaded
root@ubuntu:/home/thomas#

[tdflanders (thomasdelbeke)]

root@thomas-laptop:/home/thomas# lsb_release -rd ; uname -a ; apt-cache policy linux linux-backports-modules-2.6.27-8-generic ufw ; ufw status
Description: Ubuntu 8.10
Release: 8.10
Linux thomas-laptop 2.6.27-10-generic #1 SMP Fri Nov 21 12:00:22 UTC 2008 i686 GNU/Linux
linux:
  Installed: 2.6.27.10.13
  Candidate: 2.6.27.10.13
  Version table:
 *** 2.6.27.10.13 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/restricted Packages
        100 /var/lib/dpkg/status
     2.6.27.7.11 0
        500 http://gb.archive.ubuntu.com intrepid/restricted Packages
linux-backports-modules-2.6.27-8-generic:
  Installed: 2.6.27-8.7
  Candidate: 2.6.27-8.7
  Version table:
 *** 2.6.27-8.7 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
ufw:
  Installed: 0.23.2
  Candidate: 0.23.2
  Version table:
 *** 0.23.2 0
        500 http://gb.archive.ubuntu.com intrepid/main Packages
        100 /var/lib/dpkg/status
Status: loaded

To Action From
-- ------ ----
31356/tcp ALLOW Anywhere
31356/udp ALLOW Anywhere
8080/tcp ALLOW Anywhere
8080/udp ALLOW Anywhere

root@thomas-laptop:/home/thomas#

[tdflanders (thomasdelbeke)]

Please see this bug:

Bug #301923:

This report is public
[UFW ALLOW INPUT]: IN=wlan0 OUT= MAC=00:19:d2:c7:0f:dd:00:1c:df:73:37:f8:08:00 SRC=192.168.2.1 DST=192.168.2.4 LEN=251 TOS=0x00 PREC=0x00 TTL=64 ID=62085 PROTO=UDP SPT=1900 DPT=8008 LEN=231 [edit]

[pablomme (pablomme)]

@tdflanders: As per the (massive amounts of) data you've pasted, this bug is not fixed. That's what comment #34 says. In comment #35 you didn't even use the root account, and what's the difference with comment #34 anyway?

[tdflanders (thomasdelbeke)]

Hi there,

do you know how to add numbers to the comments in the launchpad gui? I had to count the permalinks in a text editor. Anyway,

The difference between comment 34 and 35 is:

lbm_cw_cfg80211

Are you annoyed by the amount of data? Sorry about that, I am just trying to help in debugging. What do you suggest?

Anyway,

I had some rather atypical stuff happening. Since I only use wireless through the Intel wireless card and 3 USB modem (which I am using right now) I could not connect to the internet for a while. I mistakenly judged that this bug was fixed as adding the backports and doing modprobe after 'root# dpkg-reconfigure linux-backports-modules-2.6.27-8-generic' did reveal the symbols errors, but did not make my wifi connection disappear. That happened only after rebooting, and is still not fixed yet.

In contrast with the last time I experienced this bug, and also had the connectivity issues, I cannot restore this with '$ sudo apt-get remove linux-backports-modules-2.6.27-8-generic'. Maybe this is because apt-get build-dep linux-backports-modules-2.6.27-8-generic prompted me to install linux-headers-2.6.27-10-server, which I did. I have since removed both packages and ran root# dpkg-reconfigure -au. I have deconf configured to readline and -p low.

I will search for other 2.6.27-10-server packages now and try to uninstall/delete them.

I have just downloaded a lot of dbgsym's and will try to get a Backtrace of sudo nm-connection-editor. I get WARNING: resetting 'something' with page size more than zero is deprecated. Also one of the build-dep's of network-manager network-manager-gnome or gnome-keyring was automake1.9 I believe.

This package is known to cause problems with installing build-dep's for virtualbox-ose. The problem is that there is specifically referred to automake 1.9 and not 'any automake'. I think installing backports may actually refer to this previous automake, and some program will not be able to use a later version of automake instead of that program.

I think that program is gnome-keyring or gnome-keyring-daemon. I know this because I had 'sudo NetworkManager' access to gnome-keyring made subject to a password, which is my old gnome-session (and sudo) password. I changed this login password, but I still had to give in the old password for access to the gnome-keyring for NetworkManager, after startup. I can now start both NetworkManager and gnome-keyring, as well as nm-applet, dbus-launch, nm-connection-editor and gnome-keyring-daemon. I am no longer prompted for my old password however. I think that is ample proof.

Anyway, I also got the compiz.real bug again, which is still related to the Alsa mixer I see, but that is possibly not causally related to this bug (but maybe also to automake?).

Please pardon me also for the referral to the UFW kernel crash bug. I saw the same output in dmesg in Intrepid, but not in Jaunty. I guess it is unrelated.

Cheers,

Thomas

[Jisakiel (jisakiel)]

Just for the record (as I understood that someone had it working in the report), with latest kernel as of "right now" from proposed (2.6.27-10.20 -generic) + latest backports for that kernel (2.6.27-10.8) I still get unknown symbol lbm_cw_print_ssid, though none of the others.

I tried compat-wireless but they seem quite broken, as in "module dies sometimes and then cannot be removed", "suspend doesn't work", etc. With stock iwl3945 wifi works pretty bad, with around 30% packet loss in quite-optimal situations (and not working at all in my university, for instance).

I got so tired from this (as my laptop is useless without wifi and none of the kernels I keep, nor zen-sources ones, seem to work properly) that I just installed fedora core 10 on a separate partition (where, for the record as well, wifi works wonderfully in their 2.6.27.5-117.fc10 kernel but I get some unrelated suspend / resume problems related to compiz).

[pablomme (pablomme)]

@tdflanders:
> do you know how to add numbers to the comments in the launchpad gui?

Nope.. I just hover my mouse over the "(permalink)" link and look at the status bar.

>The difference between comment 34 and 35 is: lbm_cw_cfg80211

The reason why lbm_cw_cfg80211 does not load in comment #35 is because you didn't run as root ("Operation not permitted"). What I meant is: what did you intend to show when you ran the commands in #35 that wasn't already in #34?

> Are you annoyed by the amount of data? Sorry about that, I am just trying to help in debugging. What do you suggest?

Not annoyed at all.. amused, if anything. I don't see how this data is particularly helpful, but supplying plenty of information is important in solving problems, so please do post any information that you think is useful.

@Jisakiel: have you tried using the backports from intrepid-main instead of intrepid-proposed? Go to Synaptic, install the 2.6.27-7 kernel (if it's not installed already), then select the 2.6.27-7 backports, go to Packages > Force Version... and select the one from Intrepid (2.6.27-7.4). After installing, update /boot/grub/menu.lst so that the correct version is pre-selected (if you want -- else remember to select it in the grub menu). Reboot and enjoy. My iwl3945 works fine that way, as it did in Hardy. Without the backports I get bug #285128, which is even worse that poor performance...

@Leann: thanks for the priority change!

[tdflanders (thomasdelbeke)]

Hi all,

I removed the backports now and everything is back to normal:

root@thomas-laptop:/home/thomas# apt-cache policy linux-backports-modules-2.6.27-10-generic linux-backports-modules-2.6.27-8-generic ; modprobe iwl3945
linux-backports-modules-2.6.27-10-generic:
  Installed: (none)
  Candidate: 2.6.27-10.8
  Version table:
     2.6.27-10.8 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
linux-backports-modules-2.6.27-8-generic:
  Installed: (none)
  Candidate: 2.6.27-8.7
  Version table:
     2.6.27-8.7 0
        500 http://gb.archive.ubuntu.com intrepid-proposed/main Packages
        100 /var/lib/dpkg/status
root@thomas-laptop:/home/thomas#

Thanks for the feedback pablomme. I am using wireless again, so if you do not need the backports, please remove them.

I will try to debug this further now and get a backtrace, this is still necessary right?

Cheers,

Thomas

[pablomme (pablomme)]

> I am using wireless again, so if you do not need the backports, please remove them.

Some people do need the backports, though, in which case the temporary solution is to stick to the 2.6.27-7.4 version as stated earlier. BTW, if you encounter a complete system freeze 5 minutes after starting a wireless connection (which happens only with particular networks), reinstall the backports :-)

> I will try to debug this further now and get a backtrace, this is still necessary right?

What do you want to get a backtrace of? You do a backtrace of a program when it crashes, to determine what it was doing when things went wrong. In this particular bug we don't have a crash. There is a mismatch between the symbols in the iwl3945 module and those in the kernel, so the kernel rejects loading the module (thankfully the kernel's smart; it could indeed load it and crash the entire machine!). That's pretty much diagnosed, the fix is to resynchronize the symbols referenced in the backports modules with those in the current version of the kernel, so we just need to wait for a developer in the kernel team to find some time to fix it.

[Psy[H[] (vovik-wfa)]

Yes, sometimes backports are vital. For example, my friend have to choose between wifi and ethernet on his Dell Inspiron 640m:
With LBM 2.6.27-7.6 and higher broadcom ethernet card works, but intel wireless does not, due to this bug. With LBM 2.6.27-7.5 and lower - wireless works, but ethernet does not. %(
so, thanks for high priority! :)

[Jisakiel (jisakiel)]

@pablomme: Thanks a lot for your suggestion. Finally I found a version of backports that works: 2.6.27-7-generic=2.6.27-7.4 . Summing up, each and every one of the -proposed versions are broken, both 2.6.27-10.8 and 2.6.27-7.6 , with linux-image-generic 2.6.27-7.16 and 2.6.27-10.20 kernels respectively.

I will try this one to see if the iwl3945 wifi works better (by now I'm not seeing the packet loss I'm used to and it associated fine, but I won't declare this a win yet until it gets more testing).

BTW it sucks that update-manager will not take into account the forbid-version from aptitude...

[pablomme (pablomme)]

> BTW it sucks that update-manager will not take into account the forbid-version from aptitude...

Yep, I had noticed this both for this backports issue, and for another problem with some piece of hardware needing a custom-compiled module (which I don't want overwritten!). Because of this problem I do the updates using apt-get. I've found an associated bug: see bug #210210.

[pablomme (pablomme)]

This problem does _not_ happen for kernel 2.6.27-9 from intrepid-updates. It still does for 2.6.27-10 from intrepid-proposed. This suggests that the updates repository is better looked into than the proposed one, which is somewhat encouraging.

Also, my dirty trick 2b of comment 23 can be used again (with 2.6.27-9 and 2.6.27-10 instead of 2.6.27-7 and 2.6.27-8, respectively), should you want to use 2.6.27-10 for any reason. Hopefully this problem will go away with the next proposed kernel...

[eidam655 (eidam655)]

i confirm this bug for 2.6.27-10. however, in 2.6.27-9, the wifi works.

[Psy[H[] (vovik-wfa)]

hope to test it with 2.6.27-11, but whole lbm-related packages for it are missing 20 hours now...
https://launchpad.net/ubuntu/+source/linux-backports-modules-2.6.27/2.6.27-11.10/+build/817570

[Psy[H[] (vovik-wfa)]

OK. It appears that bug is fixed with 2.6.27-11
...if lbm packages are still not in repos, they can be downloaded by link above and installed manually

[pablomme (pablomme)]

The packages are now in the repos, and indeed the problem is fixed. (Yay!)

[Fioravanti Diego (dfioravanti)]

Ok, It work with 2.6.27-11

[Launchpad Janitor (janitor)]

Per a decision made by the Ubuntu Kernel Team, bugs will longer be assigned to the ubuntu-kernel-team in Launchpad as part of the bug triage process. The ubuntu-kernel-team is being unassigned from this bug report. Refer to https://wiki.ubuntu.com/KernelTeamBugPolicies for more information. Thanks.