[Bug 66516] [845g regression] No output on LVDS

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66516

--- Comment #8 from Chris Wilson <chris at chris-wilson.co.uk> ---
Working hack:

diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 1a8a01b..e77acf1 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3717,7 +3717,7 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc)
     int pipe = intel_crtc->pipe;
     int plane = intel_crtc->plane;

-    if (!intel_crtc->active)
+    if (!intel_crtc->active && 0)
         return;

     for_each_encoder_on_crtc(dev, crtc, encoder)
@@ -4597,6 +4597,7 @@ static void i8xx_update_pll(struct intel_crtc *crtc,
     if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_LVDS)) {
         dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
     } else {
+        dpll |= DPLL_DVO_HIGH_SPEED;
         if (clock->p1 == 2)
             dpll |= PLL_P1_DIVIDE_BY_TWO;
         else
@@ -9431,7 +9432,7 @@ static struct intel_quirk intel_quirks[] = {
     { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },

     /* 830/845 need to leave pipe A & dpll A up */
-    { 0x2562, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
+    //{ 0x2562, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
     { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },

     /* Lenovo U160 cannot use SSC on LVDS */

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