F22 Gnome freezing on network change

[Shawn Badger]

I can see apps utilizing the network interface (other than loopback)
hanging but this the entire gnome interface minus the mouse/keyboard and
the app with focus freezing.


On Fri, Oct 16, 2015 at 10:08 AM, Rick Stevens <ricks at alldigital.com> wrote:

> On 10/16/2015 08:23 AM, Shawn Badger wrote:
>
>> I have been searching this off and on for a while but haven't put a
>> bunch of time into it. On both my desktop and laptop Gnome will
>> occasionally freeze for a few seconds to minutes when the network is
>> changed (VPN disconnect or connect, wireless network change, unplug
>> network cable). Every time the keyboard and mouse remain functional as
>> does the app that has focus but I can not switch apps. On occasion the
>> laptop will actually freeze long enough (>10 minutes) that I just get
>> tired of waiting for it and have to do a hard shutdown.
>>
>> Has anyone else seen this?
>>
>> A little info on the computers i'm seeing this on:
>>
>> Desktop
>> Asus desktop with a I5, 16GB memory and a 512GB SSD for the OS. Nvidia
>> and Virtual box proprietary kernel modules from RPM Fusion
>>
>>
>> Laptop
>> IBM T61 with 4gb and a 512GB SSD. Virtual box proprietary kernel module
>> from RPM Fusion
>>
>
> For one possibility, there are a number of things that depend on DNS
> resolution which will stall until a) DNS starts working again; or b)
> the DNS timeout expires (up to a minute generally). There are other
> things that may be dependent on the network being there and may pause
> or lock up if you yank the rug out from under them, network-wise. Just
> think of all the stuff that's trying to sort out their routes, or your
> machine having to invalidate all its ARP cache entries, etc.
>
> I use XFCE for the most part and I've seen similar things, but I
> understand what's dependent on the network so it doesn't surprise me.
> I also manage somewhere around 300 servers (no desktops) and odd things
> can occur if the network isn't solid. After a period of time, most sort
> themselves out, but sometimes it takes a network restart or a complete
> reboot to get back into some form of order.
> ----------------------------------------------------------------------
> - Rick Stevens, Systems Engineer, AllDigital    ricks at alldigital.com -
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