xilinx@pynq:~$ cat /var/log/Xorg.0.log
[ 146.739]
X.Org X Server 1.21.1.3
X Protocol Version 11, Revision 0
[ 146.740] Current Operating System: Linux pynq 5.15.19-xilinx-v2022.1 #1 SMP PREEMPT Mon Apr 11 17:52:14 UTC 2022 armv7l
[ 146.740] Kernel command line: root=/dev/mmcblk0p2 rw earlyprintk rootfstype=ext4 rootwait devtmpfs.mount=1 uio_pdrv_genirq.of_id=“generic-uio” clk_ignore_unused
[ 146.742] xorg-server 2:21.1.3-2ubuntu2 (For technical support please see http://www.ubuntu.com/support)
[ 146.742] Current version of pixman: 0.40.0
[ 146.743] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 146.743] Markers: (–) probed, () from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 146.745] (==) Log file: “/var/log/Xorg.0.log”, Time: Mon Oct 27 07:03:19 2025
[ 146.750] (==) Using system config directory “/usr/share/X11/xorg.conf.d”
[ 146.762] (==) ServerLayout “Layout0”
[ 146.762] () |–>Screen “Screen0” (0)
[ 146.763] () | |–>Monitor “Monitor0”
[ 146.765] () | |–>Device “Framebuffer”
[ 146.765] (==) Automatically adding devices
[ 146.765] (==) Automatically enabling devices
[ 146.765] (==) Automatically adding GPU devices
[ 146.765] (==) Automatically binding GPU devices
[ 146.766] (==) Max clients allowed: 256, resource mask: 0x1fffff
[ 146.779] (WW) `fonts.dir’ not found (or not valid) in “/usr/share/fonts/X11/misc”.
[ 146.779] Entry deleted from font path.
[ 146.779] (Run ‘mkfontdir’ on “/usr/share/fonts/X11/misc”).
[ 146.779] (WW) The directory “/usr/share/fonts/X11/cyrillic” does not exist.
[ 146.779] Entry deleted from font path.
[ 146.779] (WW) The directory “/usr/share/fonts/X11/100dpi/” does not exist.
[ 146.779] Entry deleted from font path.
[ 146.779] (WW) The directory “/usr/share/fonts/X11/75dpi/” does not exist.
[ 146.779] Entry deleted from font path.
[ 146.780] (WW) The directory “/usr/share/fonts/X11/100dpi” does not exist.
[ 146.781] Entry deleted from font path.
[ 146.781] (WW) The directory “/usr/share/fonts/X11/75dpi” does not exist.
[ 146.781] Entry deleted from font path.
[ 146.781] (==) FontPath set to:
/usr/share/fonts/X11/Type1,
built-ins
[ 146.781] (==) ModulePath set to “/usr/lib/xorg/modules”
[ 146.781] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 146.781] (II) Loader magic: 0x5e1008
[ 146.781] (II) Module ABI versions:
[ 146.781] X.Org ANSI C Emulation: 0.4
[ 146.781] X.Org Video Driver: 25.2
[ 146.781] X.Org XInput driver : 24.4
[ 146.781] X.Org Server Extension : 10.0
[ 146.785] (++) using VT number 1
[ 146.793] (II) systemd-logind: took control of session /org/freedesktop/login1/session/c2
[ 146.796] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 146.796] (II) Platform probe for /sys/devices/soc0/axi/axi:zyxclmm_drm/drm/card0
[ 146.801] (II) systemd-logind: got fd for /dev/dri/card0 226:0 fd 11 paused 0
[ 146.801] (EE)
[ 146.801] (EE) Backtrace:
[ 146.803] (EE)
[ 146.804] (EE) Segmentation fault at address 0x0
[ 146.804] (EE)
Fatal server error:
[ 146.804] (EE) Caught signal 11 (Segmentation fault). Server aborting
[ 146.804] (EE)
[ 146.804] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 146.805] (EE) Please also check the log file at “/var/log/Xorg.0.log” for additional information.
[ 146.805] (EE)
[ 146.827] (EE) Server terminated with error (1). Closing log file.
I attempted to use the simplefb driver to control my screen.But unfortunately, this error occurred. It was too brief. I didn’t see much useful information. How should I go about debugging this?