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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [VLV bisected] Screen goes blank on rotate using xrandr"
href="https://bugs.freedesktop.org/show_bug.cgi?id=84974#c11">Comment # 11</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [VLV bisected] Screen goes blank on rotate using xrandr"
href="https://bugs.freedesktop.org/show_bug.cgi?id=84974">bug 84974</a>
from <span class="vcard"><a class="email" href="mailto:ws@xell.at" title="ws@xell.at">ws@xell.at</a>
</span></b>
<pre>Reverting this single method call (which was added as part of the bisected
patch) from the 3.17.1 kernel makes rotation work again:
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index d8324c6..057b6be 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4609,7 +4609,6 @@ static void valleyview_modeset_global_resources(struct
drm_device *dev)
if (req_cdclk != dev_priv->vlv_cdclk_freq)
valleyview_set_cdclk(dev, req_cdclk);
- modeset_update_crtc_power_domains(dev);
}</pre>
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