cat /var/log/Xorg.0.log
[ 122.379]
X.Org X Server 1.20.8
X Protocol Version 11, Revision 0
[ 122.388] Build Operating System: Linux 4.4.0-177-generic armv7l Ubuntu
[ 122.388] Current Operating System: Linux recip 5.10.87-bone-rt-r59 #3 SMP PREEMPT_RT Thu Feb 3 15:37:27 IST 2022 armv7l
[ 122.389] Kernel command line: console=ttyS0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M quiet
[ 122.392] Build Date: 06 April 2020 09:39:29AM
[ 122.392] xorg-server 2:1.20.8-2ubuntu2 (For technical support please see http://www.ubuntu.com/support)
[ 122.392] Current version of pixman: 0.38.4
[ 122.392] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 122.392] Markers: (–) probed, () from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 122.393] (==) Log file: “/var/log/Xorg.0.log”, Time: Sat Feb 5 11:06:27 2022
[ 122.394] (==) Using config file: “/etc/X11/xorg.conf”
[ 122.394] (==) Using system config directory “/usr/share/X11/xorg.conf.d”
[ 122.400] (==) ServerLayout “Builtin Default Layout”
[ 122.400] () |–>Screen “Builtin Default fbdev Screen 0” (0)
[ 122.400] () | |–>Monitor “Builtin Default Monitor”
[ 122.402] () | |–>Device “Builtin Default fbdev Device 0”
[ 122.402] (==) Automatically adding devices
[ 122.402] (==) Automatically enabling devices
[ 122.402] (==) Automatically adding GPU devices
[ 122.402] (==) Automatically binding GPU devices
[ 122.402] (==) Max clients allowed: 256, resource mask: 0x1fffff
[ 122.403] (WW) `fonts.dir’ not found (or not valid) in “/usr/share/fonts/X11/misc”.
[ 122.403] Entry deleted from font path.
[ 122.403] (Run ‘mkfontdir’ on “/usr/share/fonts/X11/misc”).
[ 122.403] (WW) The directory “/usr/share/fonts/X11/cyrillic” does not exist.
[ 122.403] Entry deleted from font path.
[ 122.403] (WW) The directory “/usr/share/fonts/X11/100dpi/” does not exist.
[ 122.403] Entry deleted from font path.
[ 122.403] (WW) The directory “/usr/share/fonts/X11/75dpi/” does not exist.
[ 122.403] Entry deleted from font path.
[ 122.403] (WW) The directory “/usr/share/fonts/X11/100dpi” does not exist.
[ 122.403] Entry deleted from font path.
[ 122.403] (WW) The directory “/usr/share/fonts/X11/75dpi” does not exist.
[ 122.403] Entry deleted from font path.
[ 122.403] (==) FontPath set to:
/usr/share/fonts/X11/Type1,
built-ins
[ 122.403] (==) ModulePath set to “/usr/lib/xorg/modules”
[ 122.406] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 122.406] (II) Loader magic: 0x5a2008
[ 122.406] (II) Module ABI versions:
[ 122.406] X.Org ANSI C Emulation: 0.4
[ 122.406] X.Org Video Driver: 24.1
[ 122.406] X.Org XInput driver : 24.1
[ 122.406] X.Org Server Extension : 10.0
[ 122.420] (++) using VT number 7
[ 122.420] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[ 122.427] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 122.441] (II) no primary bus or device found
[ 122.441] falling back to /sys/devices/platform/ocp/48000000.interconnect/48000000.interconnect:segment@300000/4830e000.target-module/4830e000.lcdc/drm/card0
[ 122.441] (II) LoadModule: “glx”
[ 122.442] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 122.459] (II) Module glx: vendor=“X.Org Foundation”
[ 122.459] compiled for 1.20.8, module version = 1.0.0
[ 122.459] ABI class: X.Org Server Extension, version 10.0
[ 122.459] (II) LoadModule: “fbdev”
[ 122.465] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[ 122.466] (II) Module fbdev: vendor=“X.Org Foundation”
[ 122.466] compiled for 1.20.1, module version = 0.5.0
[ 122.466] Module class: X.Org Video Driver
[ 122.466] ABI class: X.Org Video Driver, version 24.0
[ 122.466] (II) FBDEV: driver for framebuffer: fbdev
[ 122.467] (WW) Falling back to old probe method for fbdev
[ 122.467] (II) Loading sub module “fbdevhw”
[ 122.467] (II) LoadModule: “fbdevhw”
[ 122.468] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[ 122.469] (II) Module fbdevhw: vendor=“X.Org Foundation”
[ 122.469] compiled for 1.20.8, module version = 0.0.2
[ 122.469] ABI class: X.Org Video Driver, version 24.1
[ 122.470] (II) FBDEV(0): using default device
[ 122.470] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
[ 122.470] (II) FBDEV(0): Creating default Display subsection in Screen section
“Builtin Default fbdev Screen 0” for depth/fbbpp 24/32
[ 122.470] () FBDEV(0): Depth 24, (–) framebuffer bpp 32
[ 122.470] (==) FBDEV(0): RGB weight 888
[ 122.470] (==) FBDEV(0): Default visual is TrueColor
[ 122.470] (==) FBDEV(0): Using gamma correction (1.0, 1.0, 1.0)
[ 122.471] (II) FBDEV(0): hardware: tilcdcdrmfb (video memory: 2000kB)
[ 122.471] (DB) xf86MergeOutputClassOptions unsupported bus type 0
[ 122.471] (II) FBDEV(0): checking modes against framebuffer device…
[ 122.471] (II) FBDEV(0): checking modes against monitor…
[ 122.471] (II) FBDEV(0): Virtual size is 1280x800 (pitch 1280)
[ 122.471] () FBDEV(0): Built-in mode “current”
[ 122.471] (==) FBDEV(0): DPI set to (96, 96)
[ 122.471] (II) Loading sub module “fb”
[ 122.471] (II) LoadModule: “fb”
[ 122.476] (II) Loading /usr/lib/xorg/modules/libfb.so
[ 122.477] (II) Module fb: vendor=“X.Org Foundation”
[ 122.477] compiled for 1.20.8, module version = 1.0.0
[ 122.477] ABI class: X.Org ANSI C Emulation, version 0.4
[ 122.478] (**) FBDEV(0): using shadow framebuffer
[ 122.478] (II) Loading sub module “shadow”
[ 122.478] (II) LoadModule: “shadow”
[ 122.478] (II) Loading /usr/lib/xorg/modules/libshadow.so
[ 122.479] (II) Module shadow: vendor=“X.Org Foundation”
[ 122.479] compiled for 1.20.8, module version = 1.1.0
[ 122.479] ABI class: X.Org ANSI C Emulation, version 0.4
[ 122.479] (EE) FBDEV(0): FBIOPUT_VSCREENINFO: Invalid argument
[ 122.484] (EE) FBDEV(0): mode initialization failed
[ 122.484] (EE)
Fatal server error:
[ 122.484] (EE) AddScreen/ScreenInit failed for driver 0
[ 122.484] (EE)
[ 122.484] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 122.484] (EE) Please also check the log file at “/var/log/Xorg.0.log” for additional information.
[ 122.485] (EE)
[ 122.535] (EE) Server terminated with error (1). Closing log file.
I have been using Ubuntu 16.04 LTS, and everything worked fine on 16.04, Now Ubuntu 20.04 is available so I am upgrading my build setup.