seg fault in Fedora 25 with all desktop managers marco error 4 in libX11-xcb.so.1.0.0

[Felix Miata]

Robert Kudyba composed on 2017-04-03 09:53 (UTC-0400):

>> Felix Miata wrote:

>> Give 'agp=off' on kernel cmdline a try:

> GRUB_CMDLINE_LINUX="rd.md=0 rd.dm=0 SYSFONT=True  KEYTABLE=us rd.lvm.lv=vg_curie/lv_swap rd.luks=0 rd.lvm.lv=vg_curie/lv_root LANG=en_US.UTF-8 rhgb quiet elevator=noop zswap.enabled=1 transparent_hugepage=madvise iomem=relaxed agp=off"

> I ran grub2-mkconfig -o /boot/grub2/grub.cfg rebooted and no matter what I > try, sddm, xdm, kdm, all set fault

You could try removing rhgb and quiet, but I think your best bets are either 
filing a Fedora bug, or asking elsewhere, either on xorg-driver-ati at lists.x.org 
or http://www.forums.fedoraforum.org/forumdisplay.php?f=8 or one of the 
@lists.fedoraproject.org mailing lists.
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