We are considering as a fix to change the AccelMethod to "uxa"
localhost ~ # find / -name xorg-intel-sna.conf /mnt/stateful_partition/crouton/chroots/trusty/etc/crouton/xorg-intel-sna.conf /run/crouton/mnt/stateful_partition/crouton/chroots/trusty/etc/crouton/xorg-intel-sna.conf localhost ~ # cat $(find / -name xorg-intel-sna.conf) # Copyright (c) 2015 The crouton Authors. All rights reserved. # Use of this source code is governed by a BSD-style license that can be # found in the LICENSE file. # On Intel platforms with FBC enabled, in order to see anything we need to use # the SNA driver with the TearFree option. Section "Device" Identifier "Intel Graphics SNA+TearFree" Driver "intel" Option "AccelMethod" "uxa" Option "TearFree" "true" EndSection