On Fri, Mar 27, 2015 at 07:57:52PM +0100, Thomas Richter wrote: > Hi Daniel, hi Ville, > > thanks for your help. I used now the debug output to research how to > enable dithering on the intel VCH. Apparently, it is bit #4 in register > VR01 that enables dithering. This is cross-checked by enabling in the > dvo_ivch.c file, which greatly improves image quality for 24bpp output. > The bit itself is documented as "reserved" in the intel documentation, > though it works quite nicely here. > > I will now cross-check a little bit which other side effects this bit > has if combined with other DVO features (16bpp output, and scaler > enabled). As soon as I have more, I'll prepare a small kernel patch for > it. > > Thanks and have a nice weekend, BTW I think this bug is about failure to restore the ivch to proper state after suspend (on X30): https://bugs.freedesktop.org/show_bug.cgi?id=49838 Just in case you're looking for more stuff to do around the ivch ;) -- Ville Syrjälä Intel OTC _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
