[R-SIG-Mac] loading Rcmdr, R-Tcl/Tk errors due to X11

[stefano iacus]

On 20/ott/05, at 17:49, Thomas Lumley wrote:

> On Thu, 20 Oct 2005, stefano iacus wrote:
>
>>
>> I completely missed this point in James' mail...but now I read it :)
>> I don't know if this helps or not but this my experience: I  
>> personally have x11.app launched at boot and I reboot my pbook  
>> only when "software update" asks me, otherwise my machine is  
>> always running (and occasionally sleeping).
>> I change network settings 3 to 4 four times a day (at least in the  
>> last month) and I never needed to restart X11.
>>
>> As I never experienced a failure I need some clarification from  
>> you: what I understand from James' mail is that the problem arises  
>> if you start X11 after changing network connection.
>>
>
> What I experience is that when I connect to a network via ethernet  
> any X11 that is already running will stop allowing connnections.   
> Switching between different wireless nodes doesn't seem to cause this.
and indeed I'm always using wireless connections

>
>
>> So, is this a X11 bug or what? If so, it is probably a good idea  
>> to fill a bug report to apple.
>> If not, please explain.
>>
>
> It is documented by Apple and therefore not a bug.
>  http://developer.apple.com/qa/qa2001/qa1232.html  says
>
> Q: Why can't I connect to the X Server after a network config  
> change? It requires a restart of the X server.
>
> A: This is expected behavior in the Xauthority authentication  
> mechanism which X11 for Mac OS X uses by default. The problem is  
> that Xauth uses two keys, the ip address and hostname of the system  
> running the X server. But these keys don't get updated if you  
> change the network configuration. You can disable authentication  
> from the "Security" tab of X11.app's preferences. Be aware that  
> doing so may create a security hole.
>


thanks Thomas. So the answer to James' problem is that we can't do  
anything special in R/R.app to solve this as this is a general OS X  
issue.

stefano
>
>     -thomas
>