r297297 Haswell, libGL error: failed to open drm device, driver i965

[Alexander Mishurov]

Yep, this is a more secure option than chmod 666 on /dev/dri.

On 27/03/16 19:47, Conrad Meyer wrote:
> Add yourself to the group that owns the /dev/drm device. This changed
> between 10 and CURRENT.
>
> Best,
> Conrad
> On Mar 27, 2016 9:21 AM, "Anton Shterenlikht" <mexas at bris.ac.uk> wrote:
>
>> This is an amd64 laptop with 11.0-CURRENT #0 r297297.
>> pciconf -lv gives:
>>
>> vgapci0 at pci0:0:2:0:     class=0x030000 card=0x061f1028 chip=0x0a168086
>> rev=0x0b hdr=0x00
>>      vendor     = 'Intel Corporation'
>>      device     = 'Haswell-ULT Integrated Graphics Controller'
>>      class      = display
>>      subclass   = VGA
>>
>> Am I right that I need x11-drivers/xf86-video-intel for it?
>>
>> Xorg.log doesn't show any errors:
>>
>> http://eis.bris.ac.uk/~mexas/logs/Xorg.0.log
>>
>> On launching firefox I get:
>>
>> libGL error: failed to open drm device: Permission denied
>> libGL error: failed to load driver: i965
>>
>> Is this supposed to work?
>> Have I forgotten some setup step?
>>
>> Also, will this driver support a single
>> logical screen made of two monitors,
>> i.e. laptop's + HDMI attached?
>>
>> Many thanks
>>
>> Anton
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