I recently upgraded to ubuntu 12.04 and noticed the TV out no longer works with kernel 3.2.0.
Tracing back through old kernels, I found the last working kernel was 2.6.35. Now 4 years ago I fixed a similar issue in the user space intel driver by waiting for vblank after writing to the TV_CTL register via http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/src/i830_tv.c?id=1142be53eb8d2ee8a9b60ace5d49f0ba27332275 Low and behold, it appears 2 years later this same issue was reintroduced in kernel 2.6.36 and has led to some very unhappy users eg https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/763688 Could someone please apply the following which I have confirmed re-fixes the issue for my TV output via component video connection. --- 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); _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
