Ken Moffat wrote:
> Sat, Apr 07, 2012 at 04:49:18PM -0500, Bruce Dubbs wrote:
>> Ken Moffat wrote:
>>
>> Which device is that? /dev/dri/card0? I'd think the kernel/udev would
>> create it at boot. I don't have an ATI graphics card to test, but I'm
>> interested. I'll look at the source, but I need to know what to look for.
> Seems to be. Note that it isn't specific to ati, it's for *all*
> cards or vm's supported by Mesa.
> And in case anyone missed what started this - even a user NOT in the
> video group can use the Software Rasterizer (Mesa's swrast driver),
> but not hardware acceleration.
>
> ken@ac4tv ~ $ls -lr /dev/dri/
> total 0
> crw-rw---- 1 root video 226, 64 Apr 7 18:29 controlD64
> crw-rw---- 1 root video 226, 0 Apr 7 18:29 card0
In mesa, I see three places that use card0. They are all of the form
fd = open("/dev/dri/card0", O_RDWR);
I see in rules.d/50-udev-default.rules an entry
SUBSYSTEM=="drm", GROUP="video"
The default udev permissions is 0660. I think a rule in 55-lfs.rules like:
SUBSYSTEM=="drm", MODE="0666"
may work.
-- Bruce
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