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#1 2009-02-01 23:16:10

odf
Member
From: Canada / Québec
Registered: 2008-07-17
Posts: 13

libGL error: open DRM failed (Operation not permitted)

odf ~ $ glxinfo | grep direct
libGL error: open DRM failed (Operation not permitted)
libGL error: reverting to (slow) indirect rendering

odf ~ $ sudo glxinfo | grep direct
Password:
direct rendering: Yes

Hmmmm ?

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#2 2009-02-01 23:33:47

wonder
Developer
From: Bucharest, Romania
Registered: 2006-07-05
Posts: 5,941
Website

Re: libGL error: open DRM failed (Operation not permitted)

post the output of the command groups


Give what you have. To someone, it may be better than you dare to think.

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#3 2009-02-01 23:55:26

odf
Member
From: Canada / Québec
Registered: 2008-07-17
Posts: 13

Re: libGL error: open DRM failed (Operation not permitted)

lp wheel video audio optical storage power users

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#4 2009-02-02 00:12:06

kludge
Member
Registered: 2008-08-03
Posts: 294

Re: libGL error: open DRM failed (Operation not permitted)

post the output of

ls -al /dev/dri/

[23:00:16]    dr_kludge | i want to invent an olfactory human-computer interface, integrate it into the web standards, then produce my own forked browser.
[23:00:32]    dr_kludge | can you guess what i'd call it?
[23:01:16]    dr_kludge | nosilla.
[23:01:32]    dr_kludge | i really should be going to bed.  i'm giggling madly about that.

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#5 2009-02-02 00:15:38

odf
Member
From: Canada / Québec
Registered: 2008-07-17
Posts: 13

Re: libGL error: open DRM failed (Operation not permitted)

total 0
drwxr-xr-x  2 root root      0 2009-02-02 17:47 ./
drwxr-xr-x 19 root root      0 2009-02-02 17:47 ../
crw-rw----  1 root root 226, 0 2009-02-02 18:10 card0

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#6 2009-02-02 00:35:31

odf
Member
From: Canada / Québec
Registered: 2008-07-17
Posts: 13

Re: libGL error: open DRM failed (Operation not permitted)

My xorg was missing :

Section "DRI"
    Mode 0666
EndSection

Thx for the help smile

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#7 2009-02-02 00:50:42

kludge
Member
Registered: 2008-08-03
Posts: 294

Re: libGL error: open DRM failed (Operation not permitted)

as a side note, belonging to the video group wouldn't do you any good if the dri devices belong to the root group.


[23:00:16]    dr_kludge | i want to invent an olfactory human-computer interface, integrate it into the web standards, then produce my own forked browser.
[23:00:32]    dr_kludge | can you guess what i'd call it?
[23:01:16]    dr_kludge | nosilla.
[23:01:32]    dr_kludge | i really should be going to bed.  i'm giggling madly about that.

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#8 2009-07-20 11:42:18

cinan
Member
From: Slovakia
Registered: 2008-07-04
Posts: 251
Website

Re: libGL error: open DRM failed (Operation not permitted)

I have the same problem.

glxinfo | grep rend

libGL error: open DRM failed (Operation not permitted)
libGL error: reverting to (slow) indirect rendering
direct rendering: No (If you want to find out why, try setting LIBGL_DEBUG=verbose)
OpenGL renderer string: ATI Radeon HD 3850

But if sudo glxinfo | grep rend

direct rendering: Yes

ls -al /dev/dri/

crw-r--r--  1 root users 226, 0 2009-07-20 13:37 card0

groups

wheel dbus network video audio optical storage power users vboxusers anonymous

in xorg.conf is "Section "DRI"
    Mode 0666
EndSection"


#edit:
I set permissions "sudo chmod 666 /dev/dri/card0" and it's OK. Seems to be libdrm problem.

Last edited by cinan (2009-07-20 11:58:51)

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