https://bugs.freedesktop.org/show_bug.cgi?id=34626
--- Comment #9 from Peter Weber peter.weber@ttyhoney.com 2011-11-19 09:40:14 PST --- I've tested this in the meantime also with a Intel based grapcis solution (Ironlake), it is not affected. But the Intel driver doesn't need the var vblank_mode for switching vsync off (only SwapbuffersWait). Maybe the setting of the var gets "lost" during suspend cycle?