Yakui what requirements exist for the motherboard and graphics configuration for running DRM? We're trying to use Intel processors for h264 video encoding in a headless setup. We have everything working fine in our desktop X environment, but moving to headless mode is proving tricky.
My impression is that this would be the standard: * motheboard with a video output (in order to create /dev/dri/card0) * intel CPU with integrated graphics * i965 drivers installed to linux Whereas this case would not be possible: * motherboard with no video output * intel CPU with integrated graphics * i965 drivers can't be installed because there's no output to reference? * discrete graphics card (ati or nvidia) -- creates /dev/dri/card0 but of the wrong type And this would also not be possible: *motherboard with no video output, but booted in headless mode * intel CPU with integrated graphics *i965 drivers are installed, but because no video output is present, /dev/dri/card0 cannot be created What sort of hardware/software setups are people successfully using DRM in? We have a mishmash of configurations we're trying, but are still learning the connections between X server, DRM, VAAPI, and the hardware . On Thu, May 9, 2013 at 12:41 AM, ykzhao <yakui.z...@intel.com> wrote: > On Wed, 2013-05-08 at 16:27 -0600, Matt Pekar wrote: > > Is it possible to take an intel CPU, motheboard w/out video output, > > and use VAAPI through it? > > > > > > I'm trying to use a custom xorg.conf along these lines: > > > > > > Section "Device" > > Identifier "intel0" > > Driver "intel" > > EndSection > > > > > > Section "Screen" > > Identifier "screen0" > > Device "intel0" > > > > EndSection > > > > > > But I'm unable to start X with this: > > > > > > [ 5507.348] (II) intel: Driver for Intel Integrated Graphics > > Chipsets: i810, > > i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G, > > E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G, > > 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45, > > 4 Series, G45/G43, Q45/Q43, G41, B43, B43, Clarkdale, Arrandale, > > Sandybridge Desktop (GT1), Sandybridge Desktop (GT2), > > Sandybridge Desktop (GT2+), Sandybridge Mobile (GT1), > > Sandybridge Mobile (GT2), Sandybridge Mobile (GT2+), > > Sandybridge Server, Ivybridge Mobile (GT1), Ivybridge Mobile (GT2), > > Ivybridge Desktop (GT1), Ivybridge Desktop (GT2), Ivybridge Server, > > Ivybridge Server (GT2) > > [ 5507.348] (--) using VT number 7 > > > > > > [ 5507.353] (EE) No devices detected. > > [ 5507.353] > > Fatal server error: > > [ 5507.353] no screens found > > [ 5507.354] > > > > > > Does X check that there is a physical video out on the motherboard for > > it to load a device? Has anyone been able to use X and VAAPI in this > > sort of headless mode? Would a better approach be to ditch X entirely > > and use VAAPI through DRM? > > The current libva/intel-vaapi driver can be used even when the X is not > started. > > For example: vainfo/avcenc can work without X. > > You can see the corresponding test case of libva about how to use vaapi > under DRM mode. > > thanks. > > > > > > > > > > > > >
_______________________________________________ Libva mailing list Libva@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/libva
