search for: nvkm_rdvgac

...; if (disable & (1ULL << NVKM_ENGINE_DISP)) - init->base.post = true; + base->post = true; } /* magic to detect whether or not x86 vbios code has executed * the devinit scripts to initialise the board */ - if (!init->base.post) { + if (!base->post) { if (!nvkm_rdvgac(device, 0, 0x00) && !nvkm_rdvgac(device, 0, 0x1a)) { nvkm_debug(subdev, "adaptor not initialised\n"); - init->base.post = true; + base->post = true; } } } -- 2.7.1

...e->post) { + u64 disable = nvkm_devinit_disable(base); + /* magic to detect whether or not x86 vbios code has + * executed the devinit scripts to initialise the + * board. only works if there's a display engine. + */ + if (!(disable & (1ULL << NVKM_ENGINE_DISP))) { + if (nvkm_rdvgac(device, 0, 0x00) || + nvkm_rdvgac(device, 0, 0x1a)) { + base->post = false; + } + } + } } static const struct nvkm_devinit_func -- 2.10.2

...e->post) { + u64 disable = nvkm_devinit_disable(base); + /* magic to detect whether or not x86 vbios code has + * executed the devinit scripts to initialise the + * board. only works if there's a display engine. + */ + if (!(disable & (1ULL << NVKM_ENGINE_DISP))) { + if (nvkm_rdvgac(device, 0, 0x00) || + nvkm_rdvgac(device, 0, 0x1a)) { + base->post = false; + } + } + } } static const struct nvkm_devinit_func -- 2.10.2

https://bugs.freedesktop.org/show_bug.cgi?id=97620 Bug ID: 97620 Summary: [REGRESSION] KMS having issues after kernel upgrade (4.5.1-1 to 4.6.4-1) Product: xorg Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: critical Priority: medium