xdpyinfo | grep RENDER question

[Rick Stevens]

Mark Knecht wrote:
> Rick Stevens wrote:
> 
>>>    Should we possibly update the ssh tunneling page we did to reflect 
>>> this change as of openssh-3.8?
>>
>>
>>
>> Absolutely!  You don't even need to ask.  Will you handle it or do you
>> want me to?
> 
> 
> Either way. It's probably only a line or two. I don't have access to the 
> server so you or someone else would have to add it, but I'd be happy to 
> write some text. In fact maybe just a note more or less like this:
> 
> 
> 
> NOTE: Since the release of openssh Ver 3.8 a standard ssh tunnel opened 
> with the command
> 
> ssh -X -C -c blowfish -l user  target-address
> 
> no longer allows high speed rendering on the remote display. to enable 
> high speed rending on the remote display add the '-Y' option to your 
> command line and shown here:
> 
> ssh -X -Y -C -c blowfish -l user  target-address
> 
> -Y tells the ssh program that the target-address is a trusted X11 source.
> 
> Use this option to eliminate the message:
> 
> Xlib: extension "RENDER" missing on display "localhost:10:0"
> 
> As an option there is an option (possibly undocumented at this time) 
> that allows you to place the line
> 
> ForwardX11Trusted yes
> 
> in your local /etc/ssh/ssh_config file to tell ssh that all X11 targets 
> are trusted. I don't recommend using it as the -Y option is very easy, 
> but it is there if you need it.

I've included similar text into the document as of 1300PDT, 3 May 2004.

Thanks for sorting that out, Mark.
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- Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
- VitalStream, Inc.                       http://www.vitalstream.com -
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