On Mon, 2014-07-14 at 17:29 +1000, Benjamin Herrenschmidt wrote: > On Mon, 2014-07-14 at 09:24 +0200, Peter Lieven wrote: > > it seems you have digged into the cirrus code recently. Have you an idea > > how to > > fix the issue with the graphics corruption for cirrus vga and recent X > > Server versions? > > > > E.g. take an Ubuntu 14.04 Desktop CD, boot it into live mode and open > > terminal. > > > > I have tried to debug it a little, but I have no clue how to solve this. I > > tried to get > > hands on a real hardware Cirrus Logic Graphics card and test if this > > happens there as well, > > but I had no chance to get one. > > I *think* it is a X server side bug. They broke 24bpp packed pixel > format. I've seen patches submitted to the Xorg list fairly recently by > somebody from canonical. > > You can test by creating an xorg.conf to force the display to 16bpp > instead of 24 and see if that helps.
Look for patches from "Robert Ancell <robert.anc...@canonical.com>" on the xorg-devel list. In fact I'd suggest you test and report if that works for you, that might give Keithp an incentive for actually merging them :-) Cheers, Ben.
