How to get Ubuntu GUI(Deskstop) on HDMI?

[FPGA_TEST]

Hello,

I used design:

https://digilent.com/reference/programmable-logic/zybo-z7/demos/linux-pcam-5c

Build the .xsa 2019.2 and generate the petalinux (2019.2) image .

sd card has two parations:

1.BOOT: image.ub, system.dtb, BOOT.BIN

2. rootfs: Ubuntu 18.04.2 (files) ( https://rcn-ee.com/rootfs/eewiki/minfs/)

Please let me know where I am wrong? I tried many ways still no OS on HDMI.

 

/include/ "system-conf.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/media/xilinx-vip.h>
 
/ {
	model = "Zynq Zybo Z7 Development Board";
	compatible = "digilent,zynq-zyboz7", "xlnx,zynq-7000";
 
	chosen {
		bootargs = "console=ttyPS0,115200n8 consoleblank=0 root=/dev/mmcblk0p2 rw earlyprintk rootfstype=ext4 rootwait devtmpfs.mount=1 uio_pdrv_genirq.of_id=generic-uio";
	};
 
	usb_phy0: usb_phy@0 {
		compatible = "ulpi-phy";
		#phy-cells = <0>;
		reg = <0xe0002000 0x1000>;
		view-port = <0x0170>;
		drv-vbus;
	};
 
 
};
 
&gem0 {
	phy-handle = <&ethernet_phy>;
/*	phy-reset-gpio = <&axi_gpio_eth 0 0>;
	phy-reset-active-low;	
	phy-reset-duration = <10>; */
	ethernet_phy: ethernet-phy@1 { /* rtl8211e-vl */
		reg = <1>;
		device_type = "ethernet-phy";
	};
};
 
&usb0 {	
	dr_mode = "host";
	usb-phy = <&usb_phy0>;
};
&sdhci0 {
	u-boot,dm-pre-reloc;
};
&uart1 {
	u-boot,dm-pre-reloc;
};
 
&qspi {
	u-boot,dm-pre-reloc;
};
&flash0 {
	compatible = "micron,m25p80", "s25fl128s", "spi-flash";
};
 
 
&vtg {
	compatible = "xlnx,v-tc-6.02";
};
 
&video_dynclk {
	compatible = "digilent,axi-dynclk";
	#clock-cells = <0>;
	clocks = <&clkc 15>;
};
 
 
&axi_vdma_0 {
		dma-ranges = <0x00000000 0x00000000 0x40000000>;	
};
 
&amba_pl {
	encoder_0: digilent_encoder {
		compatible = "digilent,drm-encoder";
		digilent,fmax = <150000>;
		digilent,edid-i2c = <&i2c0>;
	};
 
	xilinx_drm {
		compatible = "xlnx,drm";
		xlnx,vtc = <&vtg >;
		xlnx,connector-type = "HDMIA";
		xlnx,encoder-slave = <&encoder_0>;
		clocks = <&video_dynclk>;
		planes {
			xlnx,pixel-format = "rgb888";
			plane0 {
				dmas = <&axi_vdma_0 0>;
				dma-names = "dma0";
			};
		};
	};
};
 
 
 
 
&amba_pl {
	i2s_clk: i2s_clk {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <12000000>;
		clock-output-names = "i2s_clk";
	};
 
	sound {
		compatible = "simple-audio-card";
		simple-audio-card,name = "Zybo-Z7-Sound-Card";
		simple-audio-card,format = "i2s";
		simple-audio-card,bitclock-master = <&dailink0_master>;
		simple-audio-card,frame-master = <&dailink0_master>;
		simple-audio-card,widgets =
			"Microphone", "Microphone Jack",
			"Headphone", "Headphone Jack",
			"Line", "Line In Jack";
		simple-audio-card,routing =
			"MICIN", "Microphone Jack",
			"Headphone Jack", "LHPOUT",
			"Headphone Jack", "RHPOUT",
			"LLINEIN", "Line In Jack",
			"RLINEIN", "Line In Jack";
		dailink0_master: simple-audio-card,cpu {
			clocks = <&i2s_clk>;
		};
		simple-audio-card,codec {
			clocks = <&i2s_clk>;
			sound-dai = <&ssm2603>;
		};
	};
};
 
&i2c0 {
	clock-frequency = <100000>;
	status = "okay";
};
 
&i2c1 {
	ssm2603: ssm2603@1a{
		#sound-dai-cells = <0>;
		compatible = "adi,ssm2603";
		reg = <0x1a>;
	};
};
/ {
 
	pcam_clk: pcam_clk {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <12000000>;
	};
	DOVDD: fixed_regulator_DOVDD@0 {
		compatible = "regulator-fixed";
		regulator-name = "DOVDD_reg";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
		gpio = <&gpio0 56 GPIO_ACTIVE_HIGH>;
		startup-delay-us = <50000>;  
		enable-active-high;
	};
	AVDD: fixed_regulator_AVDD@1 {
		compatible = "regulator-fixed";
		regulator-name = "AVDD_reg";
		regulator-min-microvolt = <2800000>;
		regulator-max-microvolt = <2800000>;
 
	};
	DVDD: fixed_regulator_DVDD@2 {
		compatible = "regulator-fixed";
		regulator-name = "DVDD_reg";
		regulator-min-microvolt = <1500000>;
		regulator-max-microvolt = <1500000>;
	};
};
 
 
 
/*
&v_proc_ss_0 {
	compatible = "xlnx,v-vpss-scaler";
	clocks = <&clkc 15>;
	xlnx,num-hori-taps = <8>;
	xlnx,num-vert-taps = <8>;
	xlnx,max-num-phases = <64>;
	xlnx,max-lines = <2160>;
	xlnx,max-pixels = <3840>;
	xlnx,pix-per-clk = <1>;
	reset-gpios = <&gpio0 55 GPIO_ACTIVE_LOW>;
 
	ports {
		#address-cells = <1>;
		#size-cells = <0>;
 
		port@0 {
			reg = <0>;
 
			xlnx,video-format = <XVIP_VF_YUV_422>;
			xlnx,video-width = <8>;
 
			scaler_in: endpoint {
				remote-endpoint = <&mipi_csi2_out>;
			};
		};
		port@1 {
			reg = <1>;
 
			xlnx,video-format = <XVIP_VF_YUV_422>;
			xlnx,video-width = <8>;
 
			scaler_out: endpoint {
				remote-endpoint = <&vcap_in>;
			};
		};
	};
};
*/

 

[Ionel]

In first menuconfig image, shouldn't `Xilinx DRM HDMI subsystem Driver` option be enabled ?
Also using logs, searchable text instead of screenshots  is much easier.  (Ctrl+Shift+C to copy selected text form terminal).

[FPGA_TEST]

Quote

Quote

Hello,

Thanks for the reply 

I Enabled the xilinx DRM HDMI subsystem driver.

still no signal on hdmi

terminal info:
U-Boot 2022.01 (Sep 20 2022 - 06:35:33 +0000)

CPU:   Zynq 7z020
Silicon: v3.1
Model: Zynq Zybo Development Board
DRAM:  ECC disabled 1 GiB
Flash: 0 Bytes
NAND:  0 MiB
MMC:   mmc@e0100000: 0
Loading Environment from FAT... *** Error - No Valid Environment Area found
*** Warning - bad env area, using default environment

In:    serial@e0001000
Out:   serial@e0001000
Err:   serial@e0001000
Net:   No ethernet found.
Hit any key to stop autoboot:  0 
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
Found U-Boot script /boot.scr
2776 bytes read in 14 ms (193.4 KiB/s)
## Executing script at 03000000
Trying to load boot images from mmc0
4606940 bytes read in 268 ms (16.4 MiB/s)
## Loading kernel from FIT Image at 10000000 ...
   Using 'conf-system-top.dtb' configuration
   Verifying Hash Integrity ... OK
   Trying 'kernel-1' kernel subimage
     Description:  Linux kernel
     Type:         Kernel Image
     Compression:  uncompressed
     Data Start:   0x100000fc
     Data Size:    4582664 Bytes = 4.4 MiB
     Architecture: ARM
     OS:           Linux
     Load Address: 0x00200000
     Entry Point:  0x00200000
     Hash algo:    sha256
     Hash value:   2cada0b4c9f61ea7858912ad4dcfe06fcd530ce76d124930d79b100a63465dcf
   Verifying Hash Integrity ... sha256+ OK
## Loading fdt from FIT Image at 10000000 ...
   Using 'conf-system-top.dtb' configuration
   Verifying Hash Integrity ... OK
   Trying 'fdt-system-top.dtb' fdt subimage
     Description:  Flattened Device Tree blob
     Type:         Flat Device Tree
     Compression:  uncompressed
     Data Start:   0x1045ef10
     Data Size:    22373 Bytes = 21.8 KiB
     Architecture: ARM
     Hash algo:    sha256
     Hash value:   543382b95a01120f2d5cee32a69929d45b08a9001ebdfc569bcd01ba472dc009
   Verifying Hash Integrity ... sha256+ OK
   Booting using the fdt blob at 0x1045ef10
   Loading Kernel Image
   Loading Device Tree to 2fff7000, end 2ffff764 ... OK

Starting kernel ...

Booting Linux on physical CPU 0x0
Linux version 5.15.36-xilinx-v2022.2 (oe-user@oe-host) (arm-xilinx-linux-gnueabi-gcc (GCC) 11.2.0, GNU ld (GNU Binutils) 2.37.20210721) #1 SMP PREEMPT Mon Oct 3 07:50:07 UTC 2022
CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
OF: fdt: Machine model: Zynq Zybo Development Board
Memory policy: Data cache writealloc
cma: Reserved 16 MiB at 0x3f000000
Zone ranges:
  Normal   [mem 0x0000000000000000-0x000000002fffffff]
  HighMem  [mem 0x0000000030000000-0x000000003fffffff]
Movable zone start for each node
Early memory node ranges
  node   0: [mem 0x0000000000000000-0x000000003fffffff]
Initmem setup node 0 [mem 0x0000000000000000-0x000000003fffffff]
percpu: Embedded 12 pages/cpu s16588 r8192 d24372 u49152
Built 1 zonelists, mobility grouping on.  Total pages: 260608
Kernel command line: console=ttyPS0,115200n8 consoleblank=0 root=/dev/mmcblk0p2 rw earlyprintk rootfstype=ext4 rootwait devtmpfs.mount=1 uio_pdrv_genirq.of_id=generic-uio
Unknown kernel command line parameters "earlyprintk", will be passed to user space.
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
mem auto-init: stack:off, heap alloc:off, heap free:off
Memory: 1010892K/1048576K available (7168K kernel code, 246K rwdata, 1924K rodata, 1024K init, 121K bss, 21300K reserved, 16384K cma-reserved, 245760K highmem)
rcu: Preemptible hierarchical RCU implementation.
rcu:     RCU event tracing is enabled.
rcu:     RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.
    Trampoline variant of Tasks RCU enabled.
rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
efuse mapped to (ptrval)
slcr mapped to (ptrval)
GIC physical location is 0xf8f01000
L2C: platform modifies aux control register: 0x72360000 -> 0x72760000
L2C: DT/platform modifies aux control register: 0x72360000 -> 0x72760000
L2C-310 erratum 769419 enabled
L2C-310 enabling early BRESP for Cortex-A9
L2C-310 full line of zeros enabled for Cortex-A9
L2C-310 ID prefetch enabled, offset 1 lines
L2C-310 dynamic clock gating enabled, standby mode enabled
L2C-310 cache controller enabled, 8 ways, 512 kB
L2C-310: CACHE_ID 0x410000c8, AUX_CTRL 0x76760001
random: get_random_bytes called from start_kernel+0x364/0x5d8 with crng_init=0
zynq_clock_init: clkc starts at (ptrval)
Zynq clock init
sched_clock: 64 bits at 166MHz, resolution 6ns, wraps every 4398046511103ns
clocksource: arm_global_timer: mask: 0xffffffffffffffff max_cycles: 0x26703d7dd8, max_idle_ns: 440795208065 ns
Switching to timer-based delay loop, resolution 6ns
Console: colour dummy device 80x30
Calibrating delay loop (skipped), value calculated using timer frequency.. 333.33 BogoMIPS (lpj=1666666)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
CPU: Testing write buffer coherency: ok
CPU0: Spectre v2: using BPIALL workaround
CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
Setting up static identity map for 0x100000 - 0x100060
rcu: Hierarchical SRCU implementation.
smp: Bringing up secondary CPUs ...
CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
CPU1: Spectre v2: using BPIALL workaround
smp: Brought up 1 node, 2 CPUs
SMP: Total of 2 processors activated (666.66 BogoMIPS).
CPU: All CPU(s) started in SVC mode.
devtmpfs: initialized
VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
futex hash table entries: 512 (order: 3, 32768 bytes, linear)
pinctrl core: initialized pinctrl subsystem
NET: Registered PF_NETLINK/PF_ROUTE protocol family
DMA: preallocated 256 KiB pool for atomic coherent allocations
thermal_sys: Registered thermal governor 'step_wise'
cpuidle: using governor menu
amba f8801000.etb: Fixing up cyclic dependency with replicator
amba f8803000.tpiu: Fixing up cyclic dependency with replicator
amba f8804000.funnel: Fixing up cyclic dependency with replicator
amba f889c000.ptm: Fixing up cyclic dependency with f8804000.funnel
amba f889d000.ptm: Fixing up cyclic dependency with f8804000.funnel
hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
hw-breakpoint: maximum watchpoint size is 4 bytes.
e0001000.serial: ttyPS0 at MMIO 0xe0001000 (irq = 33, base_baud = 6249999) is a xuartps
printk: console [ttyPS0] enabled
vgaarb: loaded
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
mc: Linux media interface: v0.10
videodev: Linux video capture interface: v2.00
pps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
PTP clock support registered
EDAC MC: Ver: 3.0.0
FPGA manager framework
Advanced Linux Sound Architecture Driver Initialized.
clocksource: Switched to clocksource arm_global_timer
NET: Registered PF_INET protocol family
IP idents hash table entries: 16384 (order: 5, 131072 bytes, linear)
tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
TCP established hash table entries: 8192 (order: 3, 32768 bytes, linear)
TCP bind hash table entries: 8192 (order: 4, 65536 bytes, linear)
TCP: Hash tables configured (established 8192 bind 8192)
UDP hash table entries: 512 (order: 2, 16384 bytes, linear)
UDP-Lite hash table entries: 512 (order: 2, 16384 bytes, linear)
NET: Registered PF_UNIX/PF_LOCAL protocol family
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
PCI: CLS 0 bytes, default 64
armv7-pmu f8891000.pmu: hw perfevents: no interrupt-affinity property, guessing.
hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counters available
workingset: timestamp_bits=30 max_order=18 bucket_order=0
jffs2: version 2.2. (NAND) (SUMMARY)  © 2001-2006 Red Hat, Inc.
bounce: pool size: 64 pages
io scheduler mq-deadline registered
io scheduler kyber registered
zynq-pinctrl 700.pinctrl: zynq pinctrl initialized
dma-pl330 f8003000.dmac: Loaded driver for PL330 DMAC-241330
dma-pl330 f8003000.dmac:     DBUFF-128x8bytes Num_Chans-8 Num_Peri-4 Num_Events-16
xilinx-vdma 43000000.dma: Xilinx AXI VDMA Engine Driver Probed!!
brd: module loaded
loop: module loaded
spi_master spi0: cannot find modalias for /axi/spi@e000d000/flash@0
spi_master spi0: Failed to create SPI device for /axi/spi@e000d000/flash@0
CAN device driver interface
e1000e: Intel(R) PRO/1000 Network Driver
e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-pci: EHCI PCI platform driver
usbcore: registered new interface driver usb-storage
ULPI transceiver vendor/product ID 0x0424/0x0007
Found SMSC USB3320 ULPI transceiver.
ULPI integrity check: passed.
ci_hdrc ci_hdrc.0: EHCI Host Controller
ci_hdrc ci_hdrc.0: new USB bus registered, assigned bus number 1
ci_hdrc ci_hdrc.0: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
i2c_dev: i2c /dev entries driver
at24 0-0050: supply vcc not found, using dummy regulator
cdns-i2c e0004000.i2c: 400 kHz mmio e0004000 irq 30
cdns-i2c e0005000.i2c: 400 kHz mmio e0005000 irq 31
cdns-wdt f8005000.watchdog: Xilinx Watchdog Timer with timeout 10s
EDAC MC: ECC not enabled
Xilinx Zynq CpuIdle Driver started
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
sdhci-pltfm: SDHCI platform and OF driver helper
ledtrig-cpu: registered to indicate activity on CPUs
clocksource: ttc_clocksource: mask: 0xffff max_cycles: 0xffff, max_idle_ns: 537538477 ns
timer #0 at (ptrval), irq=47
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
fpga_manager fpga0: Xilinx Zynq FPGA Manager registered
mmc0: SDHCI controller on e0100000.mmc [e0100000.mmc] using ADMA
NET: Registered PF_INET6 protocol family
Segment Routing with IPv6
In-situ OAM (IOAM) with IPv6
sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
NET: Registered PF_PACKET protocol family
can: controller area network core
NET: Registered PF_CAN protocol family
can: raw protocol
can: broadcast manager protocol
can: netlink gateway - max_hops=1
Registering SWP/SWPB emulation handler
mmc0: new high speed SDHC card at address 1234
mmcblk0: mmc0:1234 SA16G 14.4 GiB 
of-fpga-region fpga-full: FPGA Region probed
 mmcblk0: p1 p2
of_cfs_init
of_cfs_init: OK
ALSA device list:
  No soundcards found.
EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null). Quota mode: disabled.
VFS: Mounted root (ext4 filesystem) on device 179:2.
devtmpfs: mounted
Freeing unused kernel image (initmem) memory: 1024K
Run /sbin/init as init process
random: fast init done
systemd[1]: System time before build time, advancing clock.
systemd[1]: Failed to look up module alias 'autofs4': Function not implemented
systemd[1]: systemd 245.4-4ubuntu3 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=hybrid)
systemd[1]: Detected architecture arm.

Welcome to Ubuntu 20.04 LTS!

systemd[1]: Set hostname to <arm>.
systemd[1]: /lib/systemd/system/dbus.socket:5: ListenStream= references a path below legacy directory /var/run/, updating /var/run/dbus/system_bus_socket → /run/dbus/system_bus_socket; please update the unit file accordingly.
random: systemd: uninitialized urandom read (16 bytes read)
systemd[1]: system-modprobe.slice: unit configures an IP firewall, but the local system does not support BPF/cgroup firewalling.
systemd[1]: (This warning is only shown for the first unit using IP firewalling.)
systemd[1]: Created slice system-modprobe.slice.
[  OK  ] Created slice system-modprobe.slice.
random: systemd: uninitialized urandom read (16 bytes read)
systemd[1]: Created slice system-serial\x2dgetty.slice.
[  OK  ] Created slice system-serial\x2dgetty.slice.
random: systemd: uninitialized urandom read (16 bytes read)
systemd[1]: Created slice User and Session Slice.
[  OK  ] Created slice User and Session Slice.
systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[  OK  ] Started Dispatch Password …ts to Console Directory Watch.
systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[  OK  ] Started Forward Password R…uests to Wall Directory Watch.
systemd[1]: Condition check resulted in Arbitrary Executable File Formats File System Automount Point being skipped.
systemd[1]: Reached target Local Encrypted Volumes.
[  OK  ] Reached target Local Encrypted Volumes.
systemd[1]: Reached target Paths.
[  OK  ] Reached target Paths.
systemd[1]: Reached target Remote File Systems.
[  OK  ] Reached target Remote File Systems.
systemd[1]: Reached target Slices.
[  OK  ] Reached target Slices.
systemd[1]: Reached target Swap.
[  OK  ] Reached target Swap.
systemd[1]: Listening on Syslog Socket.
[  OK  ] Listening on Syslog Socket.
systemd[1]: Listening on initctl Compatibility Named Pipe.
[  OK  ] Listening on initctl Compatibility Named Pipe.
systemd[1]: Condition check resulted in Journal Audit Socket being skipped.
systemd[1]: Listening on Journal Socket (/dev/log).
[  OK  ] Listening on Journal Socket (/dev/log).
systemd[1]: Listening on Journal Socket.
[  OK  ] Listening on Journal Socket.
systemd[1]: Listening on udev Control Socket.
[  OK  ] Listening on udev Control Socket.
systemd[1]: Listening on udev Kernel Socket.
[  OK  ] Listening on udev Kernel Socket.
systemd[1]: Condition check resulted in Huge Pages File System being skipped.
systemd[1]: Condition check resulted in POSIX Message Queue File System being skipped.
systemd[1]: Condition check resulted in Kernel Debug File System being skipped.
systemd[1]: Condition check resulted in Kernel Trace File System being skipped.
systemd[1]: Starting Journal Service...
         Starting Journal Service...
systemd[1]: Starting Set the console keyboard layout...
         Starting Set the console keyboard layout...
systemd[1]: Condition check resulted in Create list of static device nodes for the current kernel being skipped.
systemd[1]: Condition check resulted in Load Kernel Module drm being skipped.
systemd[1]: Condition check resulted in Set Up Additional Binary Formats being skipped.
systemd[1]: Starting Load Kernel Modules...
         Starting Load Kernel Modules...
systemd[1]: Starting Remount Root and Kernel File Systems...
         Starting Remount Root and Kernel File Systems...
systemd[1]: Starting udev Coldplug all Devices...
         Starting udev Coldplug all Devices...
systemd[1]: Finished Load Kernel Modules.
[  OK  ] Finished Load Kernel Modules.
systemd[1]: Finished Remount Root and Kernel File Systems.
[  OK  ] Finished Remount Root and Kernel File Systems.
systemd[1]: Condition check resulted in FUSE Control File System being skipped.
systemd[1]: Mounting Kernel Configuration File System...
         Mounting Kernel Configuration File System...
systemd[1]: Condition check resulted in Rebuild Hardware Database being skipped.
systemd[1]: Condition check resulted in Platform Persistent Storage Archival being skipped.
systemd[1]: Starting Load/Save Random Seed...
         Starting Load/Save Random Seed...
systemd[1]: Starting Apply Kernel Variables...
         Starting Apply Kernel Variables...
systemd[1]: Starting Create System Users...
         Starting Create System Users...
systemd[1]: Mounted Kernel Configuration File System.
[  OK  ] Mounted Kernel Configuration File System.
[  OK  ] Finished Apply Kernel Variables.
[  OK  ] Started Journal Service.
[  OK  ] Finished Create System Users.
         Starting Flush Journal to Persistent Storage...
         Starting Create Static Device Nodes in /dev...
[  OK  ] Finished Set the console keyboard layout.
[  OK  ] Finished udev Coldplug all Devices.
[  OK  ] Finished Create Static Device Nodes in /dev.
[  OK  ] Reached target Local File Systems (Pre).
[  OK  ] Reached target Local File Systems.
         Starting Set console font and keymap...
         Starting udev Kernel Device Manager...
[  OK  ] Finished Flush Journal to Persistent Storage.
[  OK  ] Finished Set console font and keymap.
         Starting Create Volatile Files and Directories...
[  OK  ] Started udev Kernel Device Manager.
[  OK  ] Finished Create Volatile Files and Directories.
         Starting Network Name Resolution...
         Starting Network Time Synchronization...
         Starting Update UTMP about System Boot/Shutdown...
[  OK  ] Finished Update UTMP about System Boot/Shutdown.
[  OK  ] Found device /dev/ttyPS0.
[  OK  ] Finished Load/Save Random Seed.
[  OK  ] Started Network Time Synchronization.
[  OK  ] Reached target System Initialization.
[  OK  ] Started Daily Cleanup of Temporary Directories.
[  OK  ] Reached target System Time Set.
[  OK  ] Reached target System Time Synchronized.
[  OK  ] Started Periodic ext4 Onli…ata Check for All Filesystems.
[  OK  ] Started Discard unused blocks once a week.
[  OK  ] Started Daily rotation of log files.
[  OK  ] Started Message of the Day.
[  OK  ] Reached target Timers.
[  OK  ] Listening on Avahi mDNS/DNS-SD Stack Activation Socket.
[  OK  ] Listening on D-Bus System Message Bus Socket.
[  OK  ] Reached target Sockets.
[  OK  ] Reached target Basic System.
         Starting Avahi mDNS/DNS-SD Stack...
[  OK  ] Started Regular background program processing daemon.
[  OK  ] Started D-Bus System Message Bus.
         Starting Network Manager...
[  OK  ] Started Save initial kernel messages after boot.
         Starting Remove Stale Onli…t4 Metadata Check Snapshots...
         Starting Dispatcher daemon for systemd-networkd...
[  OK  ] Started Set the CPU Frequency Scaling governor.
         Starting Authorization Manager...
         Starting System Logging Service...
         Starting Login Service...
         Starting WPA supplicant...
[  OK  ] Started Network Name Resolution.
[  OK  ] Reached target Host and Network Name Lookups.
[  OK  ] Finished Remove Stale Onli…ext4 Metadata Check Snapshots.
[  OK  ] Started System Logging Service.
[  OK  ] Started Login Service.
[  OK  ] Started Avahi mDNS/DNS-SD Stack.
[  OK  ] Started WPA supplicant.
[  OK  ] Started Network Manager.
[  OK  ] Started Authorization Manager.
[  OK  ] Reached target Network.
         Starting Modem Manager...
         Starting A high performanc… and a reverse proxy server...
         Starting OpenBSD Secure Shell server...
         Starting Hostname Service...
         Starting Permit User Sessions...
[  OK  ] Finished Permit User Sessions.
[  OK  ] Started Serial Getty on ttyPS0.
         Starting Set console scheme...
[  OK  ] Finished Set console scheme.
[  OK  ] Created slice system-getty.slice.
[  OK  ] Started Getty on tty1.
[  OK  ] Reached target Login Prompts.
[  OK  ] Started Modem Manager.
[  OK  ] Started OpenBSD Secure Shell server.
[  OK  ] Started A high performance…er and a reverse proxy server.
[  OK  ] Started Hostname Service.
         Starting Network Manager Script Dispatcher Service...
[  OK  ] Started Network Manager Script Dispatcher Service.
[  OK  ] Started Dispatcher daemon for systemd-networkd.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Finished Update UTMP about System Runlevel Changes.

Ubuntu 20.04 LTS arm ttyPS0

default username:password is [ubuntu:temppwd]

arm login: 

Please let me know where the exact issue