I spoke too fast. After playing longer witrh experimental, the bug is still there:
Backtrace: 0: /usr/X11R6/bin/X(xf86SigHandler+0x80) [0x8088b60] 1: [0xffffe500] 2: /usr/X11R6/lib/modules/extensions/libGLcore.so [0x55752c9b] 3: /usr/X11R6/lib/modules/extensions/libGLcore.so(_swrast_DrawPixels+0x255) [0x557532b5] 4: /usr/X11R6/lib/modules/extensions/libGLcore.so(_mesa_DrawPixels+0x22b) [0x556b993b] 5: /usr/X11R6/lib/modules/extensions/libGLcore.so(glDrawPixels+0x35) [0x55675d75] 6: /usr/X11R6/lib/modules/extensions/libglx.so(__glXDisp_DrawPixels+0x93) [0x5562ac23] 7: /usr/X11R6/lib/modules/extensions/libglx.so(__glXRenderLarge+0x2ba) [0x5560f25a] 8: /usr/X11R6/lib/modules/extensions/libglx.so [0x55611696] 9: /usr/X11R6/bin/X(Dispatch+0x172) [0x80c6dc2] 10: /usr/X11R6/bin/X(main+0x414) [0x80d3734] 11: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xd0) [0x4102deb0] 12: /usr/X11R6/bin/X [0x80700b1] Fatal server error: Caught signal 11. Server aborting -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
