[elrepo] NVIDIA and RHEL 6.5 issue (libglamoregl)

[Phil Perry]

On 02/12/13 17:54, Michael Lampe wrote:
> Phil Perry wrote:
>
>> [root at rhel6b64 ~]# /usr/sbin/lsof | grep X | grep libGL
>> X         1970      root  mem       REG                9,1  1165272
>> 797319 /usr/lib64/nvidia/libGL.so.331.20
>>
>>
>> I see this on RHEL6.5 with glamoregl loaded. If I disable glamor then
>> libGL is no longer loaded into the X process.
>
> That's then the unsupported use case. Maybe it's not a problem, because
> actually Nvidia's driver doesn't use glamor, so libGL is just loaded
> into the X server doing nothing.
>
> Maybe the problem is the other way around. You have integrated Intel
> graphics and an Nvidia card: Multi Head, Optimus, whatever. If you now
> enable glamor acceleration in the Intel driver (they invented glamor
> after all, but it's optional and not the default there) it will use
> Nvidia's libGL for 2D via glamor -- which I'm sure will fail horribly.
>
> Maybe one should ask Nvidia for clarification here. Or just wait and
> see. :)
>

Indeed. The system appears to be running normally and I've not 
experienced any problems in normal usage but I've not been overly 
adventurous in deliberately trying to cause a crash. Like you say, it 
appears an unsupported use case rather than instantly fatal. I shall be 
disabling glamor for real usage, I'm just playing atm to see what we can 
discover about the issue.

BTW - this is a straight nvidia system - no Optimus/Intel hardware 
present :-)