TurboVNC 1.2 and later support RANDR. It might be fruitful to try the TurboVNC 
2.0 pre-release, however, since it supports the latest version of RANDR. I am 
out of the office but will try to reproduce this when I get back, assuming it 
isn't resolved by then.

> On Nov 11, 2014, at 3:18 PM, Nathan Kidd <nathan...@spicycrypto.ca> wrote:
> 
>> On 11/11/14 11:09 AM, Ben Avdicevic wrote:
>> # vglrun ./heaven
>> 
>> The error I get is following:
>> 
>> Xlib:  extension "XINERAMA" missing on display ":1.0".
>> X Error of failed request:  BadRequest (invalid request code or no such
>> operation)
>>  Major opcode of failed request:  138 (RANDR)
>>  Minor opcode of failed request:  8 (RRGetScreenResources)
>>  Serial number of failed request:  10
>>  Current serial number in output stream:  10
>> AL lib: ALc.c:1879: exit(): closing 1 Device
>> AL lib: ALc.c:1808: alcCloseDevice(): destroying 1 Context(s)
> 
> 1) This is really about TurboVNC, not VirtualGL, and should be on the
> turbovnc-users list
> 
> 2) The error is not about XINERAMA, but RANDR.  It appears heaven  tries
> to use RANDR without first checking its availability. You need an X
> proxy that supports RANDR.  Perhaps you can add an option to your
> TurboVNC startup to enable RANDR.
> 
> -Nathan
> 
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