On Thu, 14 Feb 2019 11:52:39 -0600
DRC <[email protected]> wrote:

> Unfortunately no dice.  The latest driver available to my Mobile Radeon
> is still the old Catalyst 15.9 proprietary driver, and the latest driver
> available to my FirePro V5700 is v8.911.3.4 from 2012.  I tested the
> former and can't reproduce any issues with glXCreatePbuffer(), so this
> appears to be specific to the amdgpu driver, which I unfortunately have
> no ability to test.  Referring to
> https://github.com/VirtualGL/virtualgl/issues/93, the issue was also
> observed with an AMD A10-7860 APU.  The driver appears to be exporting
> GLXFBConfigs that support Pbuffers.  It simply isn't handling the
> glXCreatePbuffer() X11 request properly.
> 
> If someone wants to provide me temporary SSH access to a machine that
> demonstrates the problem, I can try to diagnose it remotely.  The
> machine would need to have a 64-bit VirtualGL build environment and
> TurboVNC installed.
> 
> On 2/9/19 9:56 PM, DRC wrote:
> > Ugh.  I noticed that AMD has new drivers that might actually support my
> > old FirePro card, so I'll give those a try and see if I can reproduce
> > the Pbuffer issue (I also have a Mobile Radeon that might reproduce it.)
> >  I struggle to believe that any modern GPU would truly lack Pbuffer
> > support.  Back in the day, the fglrx drivers did some funky things,
> > though, like supporting Pbuffers but not exporting the
> > glXCreatePbuffer() function from libGL, so you had to use
> > glXGetProcAddress() to load the symbol for that function before you
> > could call it.  At this point, given that VirtualGL has existed for 15
> > years and is at the heart of a bunch of commercial remote desktop
> > solutions for Linux, I don't think it's too much to ask that both nVidia
> > and AMD test VGL against their Linux drivers and report any issues to me.
> > 
> > DRC
> > 
> > On 2/9/19 11:52 AM, MartinLB wrote:
> >> Hi Everyone,
> >>    Follow up: Using a search for Radeon (as opposed to amdgpu) I found
> >> the solution here:
> >> https://groups.google.com/d/topic/virtualgl-users/TbMAhKq84yw/discussion
> >>
> >>    Exporting VGL_DRAWABLE=pixmap before running vglrun is necessary, but
> >> I can attest that I am getting very good performance with a Radeon RX
> >> Vega M.
> >>
> >> Thank you everyone for your support.
> >> -Martin
> >>
> >>
> >> On Saturday, February 9, 2019 at 9:37:52 AM UTC-8, MartinLB wrote:
> >>
> >>     Hello,
> >>        I'm new to VirtualGL, and trying to get it to work with an AMD
> >>     Radeon Vega M.   Looking through the server config files for VGL
> >>     server, I see lots of options for for NVIDIA modules, but nothing
> >>     related to the amdgpu drivers.   Has anyone had any luck with using
> >>     VGL with amdgpu? 
> >>     Thanks in advance,
> >>     Martin
> 
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I have a system I would be happy for you to play on. At the moment I
have only a sacrificial user account and a ssh key set but give me a
couple of days to get TurboVNC built and tested (I use X2Go) and I can
send you the connection information and public key.

This is the A10-7860 system currently running kernel 4.20 amdgpu driver
and Mesa 19.0 rc something. I have built VGL from git on this box and I
don't think it will be too hard to do the same for TurboVNC.

The OS is  Mageia 7 Cauldron which is currently a beta release and will
be updated daily. This shouldn't be a problem but it may get several
kernel and mesa updates over the next week or so... oh, and I am on GMT+0

-- 
Richard <[email protected]>

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