Comment 36 for bug 34590

Your hint seems to have brought me one step further. I compiled both modules successfully, rebooted, and now have some lines in the Xorg.log that indicate that DRI should work -

drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: open result is 8, (OK)
drmOpenByBusid: Searching for BusID pci:0000:01:00.0
drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: open result is 8, (OK)
drmOpenByBusid: drmOpenMinor returns 8
drmOpenByBusid: drmGetBusid reports pci:0000:01:00.0
(WW) AIGLX: 3D driver claims to not support visual 0x23
(WW) AIGLX: 3D driver claims to not support visual 0x24
(WW) AIGLX: 3D driver claims to not support visual 0x25
(WW) AIGLX: 3D driver claims to not support visual 0x26
(WW) AIGLX: 3D driver claims to not support visual 0x27
(WW) AIGLX: 3D driver claims to not support visual 0x28
(WW) AIGLX: 3D driver claims to not support visual 0x29
(WW) AIGLX: 3D driver claims to not support visual 0x2a
(WW) AIGLX: 3D driver claims to not support visual 0x2b
(WW) AIGLX: 3D driver claims to not support visual 0x2c
(WW) AIGLX: 3D driver claims to not support visual 0x2d
(WW) AIGLX: 3D driver claims to not support visual 0x2e
(WW) AIGLX: 3D driver claims to not support visual 0x2f
(WW) AIGLX: 3D driver claims to not support visual 0x30
(WW) AIGLX: 3D driver claims to not support visual 0x31
(WW) AIGLX: 3D driver claims to not support visual 0x32
(II) AIGLX: Loaded and initialized /usr/lib/dri/mach64_dri.so
(II) GLX: Initialized DRI GL provider for screen 0
Atom 4, CARD32 4, unsigned long 4

However, enabling Desktop effects does not work. As you guessed, I have a 1024x768 TFT LCD with 8megs of RAM. I moved to 16bits beforehand.

roland@roland-laptop:/var/log$ glxinfo | grep direct
Locking assertion failure. Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0xb7c61767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0xb7c618b1]
#2 /usr/lib/libX11.so.6 [0xb7cf7421]
#3 /usr/X11R6/lib/libGL.so.1(__glXInitialize+0x596) [0xb7f2d3cc]
#4 /usr/X11R6/lib/libGL.so.1 [0xb7f29fc8]
#5 /usr/X11R6/lib/libGL.so.1(glXChooseVisual+0x29) [0xb7f2b124]
#6 glxinfo [0x8049448]
#7 glxinfo [0x8049b23]
#8 /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe0) [0xb7db5450]
#9 glxinfo [0x8048d51]
direct rendering: No (If you want to find out why, try setting LIBGL_DEBUG=verbose.