From: Jesse Barnes <jbarnes at virtuousgeek.org> If the BIOS was in VGA mode, the planes may have been disabled, so we need to enable them when the first update_plane call comes in. Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org> --- drivers/gpu/drm/i915/intel_display.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 9a29604..7ef55d7 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1841,6 +1841,7 @@ static int i9xx_update_plane(struct drm_crtc *crtc, struct drm_framebuffer *fb, reg = DSPCNTR(plane); dspcntr = I915_READ(reg); + dspcntr |= DISPLAY_PLANE_ENABLE; /* Mask out pixel format bits in case we change it */ dspcntr &= ~DISPPLANE_PIXFORMAT_MASK; switch (fb->bits_per_pixel) { -- 1.7.10