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-   -   Slackware 12.1, AMD ATI Driver Update, Open DRM Failed (

tronayne 06-29-2008 11:24 AM

Slackware 12.1, AMD ATI Driver Update, Open DRM Failed

I've upgraded from to and get

Using GLX_SGIX_pbuffer
libGL error: open DRM failed (Operation not permitted)
libGL error: reverting to (slow) indirect rendering
Memory fault

when running as a user (it works just fine as root and the previous version worked just fine as anybody).

Did I miss adding users to some group, a permission somewhere or other or something?

EDIT: I Found the Answer (that I forgot about from a couple of years ago)

There are two choices to deal with this: first, allow any user access, edit /etc/X11/xorg.conf and append

Section "dri"
        Mode    0666

Or, edit /etc/X11/xorg.conf and append

Section "dri"
        Group  "video"
        Mode    0666

Works fine.

Bruce Hill 06-30-2008 12:33 AM

Okay, you're now also off the Zero Replies list.

tronayne 06-30-2008 06:06 AM

Aw, phooey -- shoulda' coulda replied instead of edit, my bad, thanks for the reminder.

Bruce Hill 06-30-2008 07:03 AM

No, problem. Thanks for posting the solution, so the next
person who finds your thread by searching will have the answer.

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