networking & wifi disabled/fails after close laptop & system hang. KU 10.4 jor

[giovanni_re]

On Tue, 4 May 2010 08:38:50 +0200, "Kevin Krammer" <kevin.krammer at gmx.at> said:
> On Tuesday, 2010-05-04, giovanni_re wrote:
> > 2 Problems:
> > 1) Close laptop (Power management system?) locks up, causing disabled
> > networking on reboot.
> > 2) When reboot: Unable to reenable wifi networking.
> > 
> > I got no replies on the KUbuntu & Ubuntu mailing lists. I thought I'd
> > ask here on the KDE lists, because perhaps people who know about the KDE
> > interface to the network management system, or power management, or any
> > other KDE stuff, might have some insight.
> > 
> > Can you think of some likely problems?  Heard of any problems like, or
> > related to this?  Troubleshooting suggestions?  Thanks :)
> 
> It could be something I have seen as well.
> 
> NetworkManager seem to have been extented to understand suspend/resume
> cycles 
> but sometimes gets it wrong and doesn't get the resume.
> 
> In such cases you can try to explicitly tell to "wake" like this:
> 
> qdbus --system org.freedesktop.NetworkManager \
>     /org/freedesktop/NetworkManager org.freedesktop.NetworkManager.wake
> 
> Cheers,
> Kevin
> -- 
> Kevin Krammer, KDE developer, xdg-utils developer
> KDE user support, developer mentoring


Thanks Kevin :)  - maybe it would be good for KDE people to join the NetworkManager list & follow the issue there.  

Here's some other info from the SVLUG list:

==

On Tue, 4 May 2010 21:20:56 -0700, "Joel Seidman" <jseidman at dslextreme.com> said:
> I don't have an answer, but this sounds similar to a problem I had last
> week. 
> I had Kubuntu 10.04 beta on my netbook, which had been working well, but 
> apparently after a package update, I lost all networking, including I
> think 
> eth0. ifconfig showed only lo.  I assumed something wrong with 
> networkmanager. (I didn't try iwconfig.)
> 
> To resolve, I ended up installing the latest Kubuntu 10.04 (Plasma
> Netbook 
> variety) from scratch, and now all is well again.

Thanks Joel & Peter for your input :)

Joel - your info adds to the accretion of knowledge that as to that there may be some bug(s) here that need removing :)

> Kevin Krammer, KDE developer, xdg-utils developer
> KDE user support, developer mentoring
over on the KDE list had this useful info (to which I have been too busy to reply yet :(  )

"> > Can you think of some likely problems?  Heard of any problems like, or
> > related to this?  Troubleshooting suggestions?  Thanks :)
> 
> It could be something I have seen as well.
> 
> NetworkManager seem to have been extented to understand suspend/resume
> cycles 
> but sometimes gets it wrong and doesn't get the resume.
> 
> In such cases you can try to explicitly tell to "wake" like this:
> 
> qdbus --system org.freedesktop.NetworkManager \
>     /org/freedesktop/NetworkManager org.freedesktop.NetworkManager.wake  "


I'm thinking 
1) this might be merely a network manager issue, affecting gnome & kde desktops, or
2) It might be only a KDE issue, arising from that the KDE people are front ending the gnome developed NeteworkManager, but haven't fully implemented all kde specific adjustments (perhaps focusing on power management, suspend issues arising when a laptop cover is closed) that the gnome people have implemented in a related way, but that hasn't been propagated to KDE technology, leaving the KDE system with network manager lacking functionality as to how handle properly dealing with wifi when laptop cover is closed.

I'm too busy to flesh this out more right now.  I'd suggest people follow this issue on the KDE & NetworkManager & KUbuntu lists, & there's a kubuntu forum were I'm seeing 1 or more similar issues mentioned.  This may be a KDE-NetworkManager joint issue that needs resolution.

:)

See this I noticed:
Network Manager Disabled
A friend of mine put kubuntu on my laptop. I have no idea how to fix things, and now it says 'Network Manager Disabled' how do i re enable?
http://ubuntuforums.org/showthread.php?p=9219714

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