[Beignet] few questions on Beignet-OpenCL-ICD v1.2.0 regarding X11 and kernel patches

[Yang, Rong R]

>but it seems like the DRI is only available together with X.
As my understanding, /dev/dri is create by drm's kernel space driver, and it is not only available together with X.
Actually X is one of /dev/dri's clients, all graphics stack such as wayland and vaapi use it.


>[    0.879802] [drm] Initialized drm 1.1.0
drm.ko is loaded, but drm module is not enough, also need i915.ko.

> 20060810
> -----Original Message-----
> From: Beignet [mailto:beignet-bounces at lists.freedesktop.org] On Behalf Of
> Weng, Chuanbo
> Sent: Monday, September 26, 2016 12:49
> To: Seva Gluschenko <gvs at webkontrol.ru>; beignet at lists.freedesktop.org
> Subject: Re: [Beignet] few questions on Beignet-OpenCL-ICD v1.2.0
> regarding X11 and kernel patches
> 
> 
> How did you work out a non-X ubuntu? Installed an ubuntu server edition?
> /dev/dri is supported by linux kernel, try this command to see whether there
> is drm and i915 module:
> 	lsmod | grep i915
> Maybe you can update your linux kernel to latest version and try again.
> 
> Thanks,
> Chuanbo Weng
> 
> -----Original Message-----
> From: Beignet [mailto:beignet-bounces at lists.freedesktop.org] On Behalf Of
> Seva Gluschenko
> Sent: Saturday, September 24, 2016 1:02 AM
> To: beignet at lists.freedesktop.org
> Subject: Re: [Beignet] few questions on Beignet-OpenCL-ICD v1.2.0
> regarding X11 and kernel patches
> 
> Hi Weng,
> 
> 
> I might be missing something, but it seems like the DRI is only available
> together with X. That's why I'm specifically interested if you know how to
> make /dev/dri appear in non-X environment.
> 
> On the other hand, I made all my exercises as root, and I've just figured out,
> though, that I don't have /dev/drm either, even though kernel reports it was
> initialized in my system:
> 
> Sep 23 10:15:24 srv1204 kernel: [    0.879802] [drm] Initialized drm 1.1.0
> 20060810
> 
> That's what I'm going to dig next. Thank you very much again for your time
> and patience.
> 
> 
> Best,
> 
> Seva
> 
> 
> 23.09.2016, 12:33, "Weng, Chuanbo" <chuanbo.weng at intel.com>:
> > Hi Seva,
> >         What Rong means is that Beignet will try to open drm device
> > exposed in /dev/dri/ (Actually, In non-X environment, Beignet will try
> > to open render node such as /dev/dri/renderD128, if failed it will then try
> to open prime primary node such as /dev/dri/card0).
> >         Beignet can run on DRM mode, but you should better be a root user.
> >         You can try to run utest as suggested by Rong, and report the message
> to us (if running utest failed).
> >         I strongly suggest you take a look at README.md, which
> > includes many basic info of Beignet usage. : )
> >
> > Thanks,
> > Chuanbo Weng
> >
> > -----Original Message-----
> > From: Beignet [mailto:beignet-bounces at lists.freedesktop.org] On Behalf
> > Of Seva Gluschenko
> > Sent: Friday, September 23, 2016 4:57 PM
> > To: beignet at lists.freedesktop.org
> > Subject: Re: [Beignet] few questions on Beignet-OpenCL-ICD v1.2.0
> > regarding X11 and kernel patches
> >
> > Thank you very much for the hint. So, in fact, even though I succeeded in
> compiling Beignet without X, I still need X to run it because DRI is only
> available with X? No chance to use DRM or DirectFB?
> >
> > 23.09.2016, 06:12, "Yang, Rong R" <rong.r.yang at intel.com>:
> >>  There is only beignet-opencl-icd's output, can't find the error message
> from beignet, can you try beignet's utest directly?
> >>  To run utest, you need "make utest", then run ". ./utests/setenv.sh" and
> at last " ./utests/utest_run".
> >>
> >>  It seems open device failed, can you also list the device under /dev/dri?
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