Description of problem: when I run glxgears stuff on this computer (which is an Intel 82915G/GV/910GL Integrated Graphics Controller) I get this: libGL error: open DRM failed (Operation not permitted) libGL error: reverting to (slow) indirect rendering When I run glxgears as root, it works as expected (without this error). This machine was running FC6 and has been upgraded to F7. glxgears worked without this error under FC6. I don't know if this error is present on something that was initially installed with F7. Version-Release number of selected component (if applicable): xorg-x11-drv-i810-2.0.0-4.fc7 How reproducible: Every time Steps to Reproduce: 1. Upgrade from FC6 to F7 2. Run glxgears as a user 3. Actual results: libGL error: open DRM failed (Operation not permitted) libGL error: reverting to (slow) indirect rendering Expected results: No error message Additional info: My /etc/X11/xorg.conf contains this: Section "DRI" Group 0 Mode 0666 EndSection Removing the "Group 0" line solves this problem and the error message no longer appears. I don't know if this is the correct way to fix this or not, but it appears to work, so far.
That's very strange. Mode 0666 should allow _anyone_ who can connect to the X server to use DRI, regardless of group membership. What are the permissions on /dev/dri/card0 when you can't use DRI as a normal user?
crw------- 1 frankcox root 226, 0 2007-06-14 00:03 card0
Maybe there's something else that's claimed DRM master status? Doesn't sound like an intel bug at any rate...
Possible relation to bug 428078.
Seems fixed in today's fedora-devel...