The commit 6a5a4e60373c from xserver v1.19.1 removes SIGIO support for input [1]. The current patch coming from Open Embedded [2] removes a check of 'useSIGIO'. This check was producing a segfault error while using X11 and Vivante driver [3]. Thanks to Gary Bisson to point out this patch! [1] https://cgit.freedesktop.org/xorg/xserver/commit/?id=6a5a4e60373c1386b311b2a8bb666c32d68a9d99 [2] https://patchwork.openembedded.org/patch/136696/ [3] http://lists.busybox.net/pipermail/buildroot/2017-February/183994.html Signed-off-by: Mylène Josserand <mylene.josserand@free-electrons.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>