This kernel patch fixes it for me. I'm working with the maintainers
upstream to get it merged
--- intel_tv.c.orig 2012-05-19 16:32:21.000000000 +1000
+++ intel_tv.c 2012-05-19 16:33:23.000000000 +1000
@@ -1186,6 +1186,9 @@ intel_tv_detect_type(struct intel_tv *in
I915_WRITE(TV_DAC, save_tv_dac & ~TVDAC_STATE_CHG_EN);
I915_WRITE(TV_CTL, save_tv_ctl);
+ intel_wait_for_vblank(intel_tv->base.base.dev,
+ to_intel_crtc(intel_tv->base.base.crtc)->pipe);
+
/* Restore interrupt config */
if (connector->polled & DRM_CONNECTOR_POLL_HPD) {
spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/763688
Title:
[915GM] S-video output doesn't work in Natty (i386)
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https://bugs.launchpad.net/linux/+bug/763688/+subscriptions
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