Bug#815888: nvidia-detect: GF119M [GeForce 610M] nvidia-detect=ok for nvidia-driver . . . not ok

[Luca Boccassi]

On Sat, 2016-04-09 at 23:41 +1000, Fulano Diego Perez wrote:
> hi all
> 
> you wrote:
> >>> Going back to my other suspicion, it might be incompatibility with the
> >>> rootless xorg that's in stretch/sid.
> >>>
> >>> Can you please try to install:
> >>>
> >>> xserver-xorg-legacy
> >>
> >> it is installed
> > 
> > Hi,
> > 
> > I had finally time to get a Sid partition up and running on my optimus
> > laptop (GT550M). Contrary to what I was expecting, the default
> > configuration of rootless Xorg works just fine with bumblebee. But I
> > had problems once I installed xserver-xorg-legacy.
> > 
> > So, could you please try to apt-get remove --purge xserver-xorg-legacy
> > and restart your X session (logout of Gnome or reboot) and try again?
> > 
> > Kind regards,
> > Luca Boccassi
> 
> 
> $ apt-get remove --purge xserver-xorg-legacy
> 
> this worked - thanks luca a lot

Great! So it looks like Bumblebee is not compatible with the SUID
wrapper in xserver-xorg-legacy. I will try to investigate as soon as I
have time.

Thanks for helping confirm this!

> in firefox-esr 45.0.1 about:support
> 
> 
> 
> Graphics
> 
> Adapter Description	NVIDIA Corporation -- GeForce 610M/PCIe/SSE2
> Asynchronous Pan/Zoom	none
> Device ID	GeForce 610M/PCIe/SSE2
> Driver Version	4.5.0 NVIDIA 352.79
> GPU Accelerated Windows	0/1 Basic (OMTC) Blocked for your graphics
> driver version. Try updating your graphics driver to version <Anything
> with EXT_texture_from_pixmap support> or newer.
> Supports Hardware H264 Decoding	No;
> Vendor ID	NVIDIA Corporation
> WebGL Renderer	NVIDIA Corporation -- GeForce 610M/PCIe/SSE2
> windowLayerManagerRemote	true
> AzureCanvasBackend	cairo
> AzureContentBackend	cairo
> AzureFallbackCanvasBackend	none
> AzureSkiaAccelerated	0
> CairoUseXRender	1
> 
> 
> the card supports H.264, VC1, MPEG2 1080p video decorders
> 
> but doesn't _specifically_ say if hardware/software
> 
> http://www.geforce.com/hardware/notebook-gpus/geforce-610m/specifications
> 
> from above
> 
> Supports Hardware H264 Decoding No;
> 
> is this to be expected ?

The upstream primus developer mentions this in a bug report about the
same message you get [1]. From what I can understand, both Primus and
VirtualGL (the 2 bridges supported by bumblebee) only supports GL calls,
but GLX is needed by Firefox to enable WebGL. So it looks like it's not
supported by upstream, sorry.

Anyway, my personal recommendation would be to just use the integrated
card for browsing/video playback. These days the Intel GPUs are more
than well equipped to handle that kind of workload. Optimus/Bumblebee
come in handy for games and Cuda/OpenCL :-)

Kind regards,
Luca Boccassi

[1] https://github.com/amonakov/primus/issues/43#issuecomment-13932246
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