Many Closed GPU Hung Bugs (at fd.o): Bug 55984 - Chris fixed this bug. Bug 50619 - "sounds like the original issue was a combination of busted hw/bios, and we're robbed of any chances to do further debug" Daniel Bug 59951 - "For 845g, you need to be either using SNA from xf86-video-intel-2.20.19 (or later) or kernel-3.8 (or later)." Chris Bug 54964 - I confirmed this bymyself last week. Got same cpu stepping here and verified both WAs fixed this bug: drm/i915: Implement WaSetupGtModeTdRowDispatch && drm/i915: Implement WaDisableHiZPlanesWhenMSAAEnabled Bug 50545: Also fixed by Daniel's patch: drm/i915: Implement WaDisableHiZPlanesWhenMSAAEnabled Rodrigo still have to playing with his old (and new) VGA modes bugs. fd.o resolved bug list: http://tinyurl.com/b8ukswa fd.o open bugs order by update date: http://tinyurl.com/afxbovg Thanks, -- Rodrigo Vivi Blog: http://blog.vivi.eng.br