[ale] remote x apps crash X11

[Geoffrey Myers]

On 09/29/2010 12:42 PM, Lightner, Jeff wrote:
> I use ssh with X for display back to Cygwin/X on my Windows laptop from
> multiple UNIX/Linux servers all the time and haven't seen X11 apps crash
> like that.   (I never do the full XDMCP though - just individual apps -
> I prefer to work in a single desktop environment.)

Let me be clear.  It's not the app that crashes, it's X11 on the laptop. 
  X11 crashes and I'm looking at a login screen.

>
> -----Original Message-----
> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
> Geoffrey Myers
> Sent: Wednesday, September 29, 2010 12:23 PM
> To: sergio.chaves at gmail.com; Atlanta Linux Enthusiasts - Yes! We run
> Linux!
> Subject: Re: [ale] remote x apps crash X11
>
> On 09/29/2010 12:02 PM, Sergio Chaves wrote:
>> Apparently there is a bug with a remote X session running over SSH.
>> Quick Google search "ssh -x crash local session" provided +-6K results
> for
>> infinite amount of distributions.
>
> Hmm, well quite interesting as I do this on Red Hat, Mandriva, SuSE on
> various machines, but only have that problem on Fedora 12.
>
> I'll check the links.
>
>>
>> Interesting links to look at:
>> http://www.x.org/wiki/Development/Documentation/ServerDebugging
>> and
>> http://linux.die.net/man/5/sshd_config  (sshd man page (5) ).
>> Looking at the TCPKeepAlive config option, it reads: "Specifies
> whether the
>> system should send TCP keepalive messages to the other side. If they
> are sent,
>> death of the connection or crash of one of the machines will be
> properly
>> noticed. However, this means that connections will die if the route is
> down
>> temporarily, and some people find it annoying. On the other hand, if
> TCP
>> keepalives are not sent, sessions may hang indefinitely on the server,
> leaving
>> ''ghost'' users and consuming server resources."
>>
>> Hope that helps :o)
>>
>>
>> On Wednesday, September 29, 2010 08:54:06 am Geoffrey Myers wrote:
>>> So, I've got Fedora 12 installed on a laptop.  If I run an remote X
>>> application as in:
>>>
>>> ssh -X mac thunderbird
>>>
>>> It crashes my X11 session on the laptop.  Not immediately, but
>>> eventually.  Anyone have a clue why this might be happening?
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>


-- 
Until later, Geoffrey

"I predict future happiness for America if they can prevent
the government from wasting the labors of the people under
the pretense of taking care of them."
- Thomas Jefferson