[SWLUG] Ubuntu/KDE lost internet connectivity-KNetworkManager etc

[Rich Colquhoun]

It does look as though you've got a conflict between your
kernel headers that are installed and the ones you need for
the kernel you're running. Do you have more than one kernel
option from the boot-up GRUB screen? if so try selecting
the older one...

Does your connection work if you connect it using a CAT5
cable? 
If you're able to access your samba shares then it means
you are connected to the network though, which is a good
start.
Do you know your route/gateway and DNS settings? on my
system I just set those as the router itself (192.168.1.1)

arfab

--- Stephen Constantinou <stephanos at writeme.com> wrote:

> Dear All
> 
> I appear to have lost internet connectivity.  I was using
> my Ubuntu/KDE
> laptop on an internal network via a switch that connected
> to a
> Smoothwall firewall.  It had a static IP.  All was well
> and I sometimes
> made a wireless internet connection as well by attaching
> a wireless/4
> port router to the switch. I stopped using wireless for a
> while.
> 
> I was using KNetworkManger to configure ethernet and
> wireless
> connections.  I right click and chose Manual Connections
> to do this.
> Now the interface has stopped appearing and nothing
> happens.
> The other application I was using was Wireless Assistant
> 0.5.7.  When I
> click this it does not start either.  Previously I had
> difficulty with
> these applications and I uninstalled and reinstalled
> them.  I must have
> retained internet connectivity to be able to do this.
> 
> During boot up a message to screen alerts me to look at
> /tmp/dgcconfig-building.txt.  The contents of which are
> below:
> <content of dgcconfig-building.txt>
> cd /lib/modules/2.6.24-16-generic/build && make
> "CNXT_KERNELSRC=/lib/modules/2.6.24-16-generic/build"
> "M=/usr/lib/dgcmodem/modules" "CC=gcc" clean)
> make[1]: Entering directory
> `/usr/src/linux-headers-2.6.24-16-generic'
> make[1]: Leaving directory
> `/usr/src/linux-headers-2.6.24-16-generic'
> rm -rf *.o GPL/*.o *.ko GPL/*.ko *.mod.c GPL/*.mod.c
> .*.cmd GPL/.*.cmd
> .tmp_versions .tmp_versions
>
/lib/modules/2.6.24-16-generic/build/.tmp_versions/dgcusbdcp.mod
> Modules.symvers GPL/hda/Modules.symvers
> (cd /lib/modules/2.6.24-16-generic/build && make
> "CNXT_KERNELSRC=/lib/modules/2.6.24-16-generic/build"
> "M=/usr/lib/dgcmodem/modules" "CC=gcc" modules)
> make[1]: Entering directory
> `/usr/src/linux-headers-2.6.24-16-generic'
> scripts/Makefile.build:46: *** CFLAGS was changed in
> "/usr/lib/dgcmodem/modules/Makefile". Fix it to use
> EXTRA_CFLAGS.  Stop.
> make[1]: *** [_module_/usr/lib/dgcmodem/modules] Error 2
> make[1]: Leaving directory
> `/usr/src/linux-headers-2.6.24-16-generic'
> make: *** [all] Error 2
> </content of dgcconfig-building.txt>
> 
> With no internet connectivity I did not want to uninstall
> those
> applications as I would not be able to reinstall.  I
> purchased the
> laptop pre installed with Ubuntu 7.1 and since then it
> had an online
> upgrade to 8.?.  This is my first attempt to use wireless
> since the
> upgrade to 8.?
> 
> However, smb://dell/c in Konqueror still connects me to
> the file system
> of the windows machine on the network.
> 
> Any help appreciated
> 
> Stephen
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