On Mon, Apr 14, 2014 at 05:21:28PM +0200, Philipp Zabel wrote: > Repeatedly enabling and disabling the display currently can lead to a state > in which the IPU doesn't produce a valid signal anymore because we disable > IPU submodules before they can finish their interaction. I'm afraid to say that after adding these patches, I find that when Xorg starts, the thing appears to lock up. Bisecting points at: imx-drm: ipu-dc: Wait for DC_FC_1 / DP_SF_END interrupt being the culpret - booting with the patches up to and including: imx-drm: ipu-dmfc: Wait for FIFOs to run empty before disabling works fine. -- FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly improving, and getting towards what was expected from it. _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel