[Libva] using libva video compression on system with no monitor

[rlandle at gdrs.com]

I agree with Gwenole.
I verified that I am in the video group, and I changed the file mode and group of /dev/dri/card0 but it did not help.

>>ls -l /dev/dri/card0
crw-rw----+ 1 root video 226, 0 Aug 16 07:46 /dev/dri/card0

I can only get this to work with "root" privileges.




-----Original Message-----
From: Gwenole Beauchesne [mailto:gb.devel at gmail.com] 
Sent: Thursday, August 16, 2012 4:25 AM
To: Xiang, Haihao
Cc: Robert J. Landle; libva at lists.freedesktop.org
Subject: Re: [Libva] using libva video compression on system with no monitor

Hi,

2012/8/16 Xiang, Haihao <haihao.xiang at intel.com>:

>> I see a comment in /va/drm/va_drm_auth.c
>>
>>  /* Default: root + master privs are needed for the following call */
>
> Master is enough.

Master requires "root" privileges.

> That is because the permission is wrong for you. Usually the file mode
> of /dev/dri/card0 is
>
> crw-rw---- 1 root video 226, 0 2012-08-16 08:55 /dev/dri/card0
>
> So either add the user into video group or change the file mode.

The other condition is to *not* have any X server running, or that you
provide a valid DISPLAY in that case.

Regards,
Gwenole.

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