Chan Kim's questions

I am running a script which looks like this.

#!/bin/bash
dat=$(date +%Y%m%d%H%M)
run_sim xmsclst gemm dcs s xec -post_min -d |& tee logx.$dat

The run_sim is another csh script and it calls make program to run a long simulation.(A simulation envoling rtl files and gate-level model for our chip development). The problem I found is :
Normally, the simulation progress is displayed on the shell immediately as the simulation model prints something using the verilog's $display system call. But if I use the above command, which is using pipeline and tee command, the text output is buffered somewhere and it is not seen on the screen right away so I cannot know the status of the simulation. Only when I press ctrl-C to stop the simulation, then come out the buffered display lines on the screen, but then I cannot resume my simulation, because it's already stopped. I know if I don't use the pipeline and tee command, I could see the output as the simulation progresses But I have already started the simulation and it's already passed more than 2 hours and I don't have much time for repeating this simulation process today.
Is there any way I can see the simulation progress without killing the simulation? and hopefully without killing the tee process? (Having asked this, I think maybe I can kill just the tee process and the text may come out normally again.)

To write a document I need to put a picture that I can capture from the screen. The picture is supposed to have an xterm which displayout uart output during rtl simulation. But I didn't capture it when I did the simulation and it takes very long time to run the simulation again and I want to finish the document now. I have the log file that was displayed in the xterm and I thought maybe I could run xterm and read the log file there faking like it was put on there during simulation. I found I can set the title of the xterm like 'UART0_TERMINAL' by giving -title UART0_TERMINAL option but when I open the log file inside the terminal, the title of the xterm changes to like 'log/zeus_uart0.log (~/prj/chip/...)' which I don't want. I want the title bar remain as 'UART0_TERMINAL' like in simulation. Can I make the title of the xterm unchanged?

If I do ls -ltrd * I can list the files or directories sorted in the modified time order (recent ones at the end, because of the r option). Now I have a file containing list of this files or directories like this (by the way this list contains only files). Suppose this is the file list.txt.

simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/aa
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/ab_file_o.dat
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/bpad_40930.err
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/cds.lib
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/doctags
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/doctags_sw
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/env1
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/hdl.var
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/inc_list.txt
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/logx
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/makefileslist
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/scp_fw/abts.bin
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/sim_cmd.txt
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/sim_cmd/sim_cmd_defines.tcl
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/sim_cmd/sim_cmd_gui_fpga.tcl
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/src_list.txt
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/tags_sw
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/xemis_inc_list.txt
simab21m/sim_rtl_xmm_gemm_f32_spm_test_fpga/xemis_src_list.txt

I want to list up these files in reverse modified time order. How should I do it? I have tried

ls -ltrd < cat list

but it gives me

bash: cat: No such file or directory

or when I tried

ls -ltrd < `cat list.txt`

it gives me

bash: `cat list.txt`: ambiguous redirect

How should I do it?

To access files in a directory from another directory, I often set a variable for that directory. For example (so you can try it your self),

export dir1=/usr/local/bin

and then type ls $dir1/ followed by tab. I wanted the shell to show the files under /usr/local/bin but by the tab, the character $ is escaped with \ to become \$dir1 and the shell doesn't understand it as $dir1 anymore and doesn't expand it to /usr/local/bin not showing the files there. This is quite annoying (I used to do these things with no problem before but is it happening from ubuntu-22.04?). Is there any way I can stop this auto escaping during the file name auto completion?
p.s. - I saw https://lists.gnu.org/archive/html/bug-bash/2011-02/msg00280.html but found no answer, just non essential long discussions that are not to the point..

I use two machines often using vnn. One is ubuntu 20.04 unity the other is ubuntu 22.04 xfce4. I used terminator window on both systems.
But in the xfce4 case, the character is not 100% white and the black is not 100% black. The contrast isn't big enough so it always looks a little dimmed. But in the unity case, it is clear and more comfortable to my eyes. I tried to change the font color in the terminator's preference window but couldn't find the menu(only unfocused terminal font brightness setting is there. And in Profiles tab, 'use the system fixed width font' is checked, I tried setting it to another font, but it didn't make big difference). I tried to find it in the 'Desktop' settings but there was no font setting.
How can I give the fonts in xfce more contrast? (100% white characters on 100% black backgroud on the terminal).

I saw https://medium.com/@kadek/understanding-vims-jump-list-7e1bfc72cdf0. So when I did :jumps, I could see the jumps in the past and in the future from where I am. I wanted to go back to the jump 6 in the past.

:jumps
 jump line  col file/text

  12     1    0 /tmp/uu
  11    10    0 /tmp/uu
  10  4832   27 * Writing CBASER resets CREADR to 0, so make CWRITER and
   9   128   63 arch/arm64/include/asm/io.h
   8   125   41 arch/arm64/include/asm/arch_gicv3.h
   7  2284   11 gits_write_baser(val, its->base + GITS_BASER + (idx << 3));
   6  5011    1 its->base = its_base;
   5  4967    0
   4  4680   11 its->pre_its_base = pre_its_window[0];
   3  4968   25 static int __init its_probe_one(struct resource *res,
   2  5238    2 its_probe_one(&res, &np->fwnode, of_node_to_nid(np));
   1  5233   37 if (of_address_to_resource(np, 0, &res)) {
>

But when I type 6g; as the above link said, nothing happens. What should I do to go back to 6 times back? (6 times ctrl-o).

I wanted to change the mount point name from /hdd_ext to /data1. So I checked what processes are using that directory. (ref : https://www.golinuxcloud.com/how-to-change-mount-point-name-in-linux/) But when i do `fuser -cu /hdd_ext/', I see so many somethings as below. They don't look like process IDs. I closed all the apps and opened only one terminal. How can I make those disappear??

ckim@ckim-ubuntu:~$ fuser -cu /hdd_ext/ /hdd_ext:
2584rce(ckim) 2590rce(ckim) 2592re(ckim) 2601re(ckim) 2618re(ckim) 2633re(ckim) 2640re(ckim) 2687re(ckim) 2707re(ckim) 2730re(ckim) 2734re(ckim) 2768re(ckim) 2781re(ckim) 2872re(ckim) 2886re(ckim) 2895re(ckim) 2896re(ckim) 2899rce(ckim) 2900rce(ckim) 2907rce(ckim) 2912rce(ckim) 2916rce(ckim) 2990re(ckim) 3037re(ckim) 3041re(ckim) 3042re(ckim) 3044re(ckim) 3046rce(ckim) 3058rce(ckim) 3063rce(ckim) 3068rce(ckim) 3077rce(ckim) 3085rce(ckim) 3095rce(ckim) 3099rce(ckim) 3104rce(ckim) 3113rce(ckim) 3119rce(ckim) 3126rce(ckim) 3133rce(ckim) 3137rce(ckim) 3139rce(ckim) 3172re(ckim) 3174re(ckim) 3175re(ckim) 3176re(ckim) 3177re(ckim) 3179re(ckim) 3182re(ckim) 3185re(ckim) 3186re(ckim) 3187re(ckim) 3192re(ckim) 3195re(ckim) 3199re(ckim) 3200re(ckim) 3210re(ckim) 3211re(ckim) 3221re(ckim) 3222re(ckim) 3286re(ckim) 3287re(ckim) 3288re(ckim) 3296re(ckim) 3309re(ckim) 3313re(ckim) 3393re(ckim) 3432re(ckim) 3588rce(ckim) 3591re(ckim) 5237rce(ckim) 12764rce(ckim) 48534re(ckim) 48541rce(ckim) 48546re(ckim) 48645re(ckim) 48654re(ckim)

I have tightvnc server on my new ubuntu-22.04 machine and can use vnc.
VNC xstartup is configured to use Xfce4.
How can I disable the automatic screen lock of the Xfce4 window? I tried setting 'Display Power Management' to 'off' in Applications->Settings->Power Manager menu, but it doesn't work.

I tried updating my cross tools for arm64 on my x86-64 ubuntu 20.04 machine.
The installed cross tools gcc-arm-11.2-2022.02-x86_64-aarch64-none-elf from arm.
When I run the aarch64-none-elf-gdb, it gives me this message.

ckim@ckim-ubuntu:~/test$ aarch64-none-elf-gdb
aarch64-none-elf-gdb: error while loading shared libraries: libpython3.6m.so.1.0: cannot open shared object file: No such file or directory

I found I have some libpython packages on my system.

ckim@ckim-ubuntu:~/test$ dpkg -l | grep libpython
ii  libpython2-stdlib:amd64                    2.7.17-2ubuntu4                     amd64        interactive high-level object-oriented language (Python2)
ii  libpython2.7:amd64                         2.7.18-1~20.04.1                    amd64        Shared Python runtime library (version 2.7)
ii  libpython2.7-minimal:amd64                 2.7.18-1~20.04.1                    amd64        Minimal subset of the Python language (version 2.7)
ii  libpython2.7-stdlib:amd64                  2.7.18-1~20.04.1                    amd64        Interactive high-level object-oriented language (standard library, version 2.7)
ii  libpython3-dev:amd64                       3.8.2-0ubuntu2                      amd64        header files and a static library for Python (default)
ii  libpython3-stdlib:amd64                    3.8.2-0ubuntu2                      amd64        interactive high-level object-oriented language (default python3 version)
ii  libpython3.8:amd64                         3.8.10-0ubuntu1~20.04.4             amd64        Shared Python runtime library (version 3.8)
ii  libpython3.8-dev:amd64                     3.8.10-0ubuntu1~20.04.4             amd64        Header files and a static library for Python (v3.8)
ii  libpython3.8-minimal:amd64                 3.8.10-0ubuntu1~20.04.4             amd64        Minimal subset of the Python language (version 3.8)
ii  libpython3.8-stdlib:amd64                  3.8.10-0ubuntu1~20.04.4             amd64        Interactive high-level object-oriented language (standard library, version 3.8)

and when I do sudo apt search libpython, I see only libpython3.8 or libpython3.9 stuff. What should I do in this case?

ADD

I found by dpkg -L libpython3.8, I have libpython3.8.so.1.0 in /usr/lib/x86_64-linux-gnu directory. So I went there and did
sudo ln -s libpython3.8.so.1.0 libpython3.6m.so.1.0
and the debugger runs (though I couldn't see the change I wanted from this new version). I'm not sure this is the correct method.

In bash, I wish I could output sum of two input values, all the input and output string represented in hex format as follows.
This is what I want to do.

$ script1 0x80200000 0x800
sum = 0x80200800
$

How should I write the script 'script1' for this? Of course this doesn't work.

sum = $1 + $2
echo "sum = " $sum

For example, I have seen the term "LiveCD" in this web page: https://help.ubuntu.com/community/LiveCDCustomization

Why is it called a "LiveCD"?

And is ubuntu-20.04.2.0-desktop-amd64.iso also a LiveCD image?

I'm trying to install ubuntu 18.04 on a qemu virtual machine which is a modified version of qemu's arm virt machine. I checked that I can install ubuntu 18.04 on arm virt machine as directed here, a very helpful page.
But when I try to install it on a modified machine, it fails, so I wanted to debug (follow) the ubuntu install procedures, if it's possible.
I thought I need to access the source code or scripts data for ubuntu install and found this interesting page for making ubuntu .iso file. (If I can compile some executable in debug mode and follow it, I might be able to see where the problem is.)
It tells me to use debootstrap command to extract all the bootstrap files to a directory. The command is below.

sudo debootstrap --arch=$ARCH $RELEASE chroot

I tried extracting for ubuntu 20.04 (focal fosa) because my ultimate goal is to install 20.04 on my virtual machine. So I tried sudo deboostrap --arch=arm64 focal chroot and it extracts the bootstrap data to directory chroot. The guide instructs me to install futher packages inside the chroot directory by entering bash with command sudo chroot chroot. But soon I found the bash executable inside the chroot directory is for arm64 when my host is amd64. I'm almost sure I need to do the job of installing ubuntu packages inside the chroot directory using an arm64 computer (whch I have one really) that can execute the bash and other arm64 binaries in the chroot file system. Is my understanding correct? And this page looks very old (talking about versions from 2011 or 2012). Can anyone direct me to a more up-to-date information? Thank you!

I have fresh-installed Ubuntu 20.04 with GNOME lately, and installed ddd yesterday. The ddd font size is too small (12) so I changed the defaultFontSize value to 200 (from 120, in units of 1/10 points) in the preferences, but it doesn't have any effect. I also tried setting variableWidthFont which the manual says "is specified as an X font spec". It has no effect either.

This is the output when I start ddd:

Warning: Cannot convert string "-*-helvetica-medium-r-*-*-*-200-*-*-*-*-iso8859-*" to type FontStruct
(Annoyed?  Try 'Edit->Preferences->General->Suppress X Warnings'!)
Warning: Cannot convert string "-*-helvetica-medium-r-*-*-*-170-*-*-*-*-iso8859-*" to type FontStruct
Warning: Cannot convert string "-*-lucidatypewriter-medium-r-*-*-*-200-*-*-*-*-iso8859-*" to type FontStruct
Warning: Cannot convert string "-*-lucidatypewriter-bold-r-*-*-*-200-*-*-*-*-iso8859-*" to type FontStruct
Warning: Cannot convert string "-*-helvetica-bold-r-*-*-*-200-*-*-*-*-iso8859-*" to type FontStruct
Warning: Cannot convert string "-*-helvetica-medium-*-*-*-*-200-*-*-*-*-iso8859-*" to type FontStruct
Warning: Cannot convert string "-*-helvetica-bold-*-*-*-*-200-*-*-*-*-iso8859-*" to type FontStruct
Warning: Cannot convert string "-*-helvetica-bold-r-*-*-*-300-*-*-*-*-iso8859-*" to type FontStruct
Warning: Cannot convert string "-*-symbol-*-*-*-*-*-200-*-*-*-*-adobe-*" to type FontStruct
Warning: Could not load font "-*-lucidatypewriter-medium-*-*-*-*-200-*-*-*-*-iso8859-*", using font "fixed" instead
Warning: Could not load font "-*-lucidatypewriter-medium-r-*-*-*-200-*-*-*-*-iso8859-*", using font "fixed" instead
Warning: Could not load font "-*-lucidatypewriter-bold-*-*-*-*-200-*-*-*-*-iso8859-*", using font "fixed" instead

Do I have to install any font package in Ubuntu 20.04 for this to work?

I fresh installed ubuntu 20.04 today and found the alt+mouse drag for move and ctrl+mouse drag for resize doesn't work. How can I turn the function on? (I don't know why ubuntu people didn't set it as default).
ADD : I found under setting-keyboard short - windows, the default window move is Alt+F7 and window resize is Alt+F8. I want to change it to Alt+mouse and Ctrl+mouse which is quicker. How can I change it? (I tried but didn't work)

I'm trying to upgrade my desktop from ubuntu 16.04 to 18.04.
(I regret not having upgraded it earlier before the ubuntu 16.04 EOL arrived. Two weeks ago I have upgraded two 16.04 notebooks to 18.04 though eventhough it was after the EOL, at that time there was just small problems I could solve).
I did sudo apt update but I'm getting the error below during apt upgrade after that.

ckim@chan-ubuntu:~/prj/abdsn$ sudo apt upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
  cpp-5-aarch64-linux-gnu cpp-aarch64-linux-gnu cuda-command-line-tools-10-0 cuda-compiler-10-0 cuda-cublas-10-0 cuda-cublas-dev-10-0 cuda-cudart-10-0
  cuda-cudart-dev-10-0 cuda-cufft-10-0 cuda-cufft-dev-10-0 cuda-cuobjdump-10-0 cuda-cupti-10-0 cuda-curand-10-0 cuda-curand-dev-10-0 cuda-cusolver-10-0
  cuda-cusolver-dev-10-0 cuda-cusparse-10-0 cuda-cusparse-dev-10-0 cuda-documentation-10-0 cuda-driver-dev-10-0 cuda-gdb-10-0
  cuda-gpu-library-advisor-10-0 cuda-libraries-10-0 cuda-libraries-dev-10-0 cuda-license-10-0 cuda-memcheck-10-0 cuda-misc-headers-10-0 cuda-npp-10-0
  cuda-npp-dev-10-0 cuda-nsight-10-0 cuda-nsight-compute-10-0 cuda-nvcc-10-0 cuda-nvdisasm-10-0 cuda-nvgraph-10-0 cuda-nvgraph-dev-10-0 cuda-nvjpeg-10-0
  cuda-nvjpeg-dev-10-0 cuda-nvml-dev-10-0 cuda-nvprof-10-0 cuda-nvprune-10-0 cuda-nvrtc-10-0 cuda-nvrtc-dev-10-0 cuda-nvtx-10-0 cuda-nvvp-10-0
  cuda-samples-10-0 cuda-toolkit-10-0 cuda-tools-10-0 cuda-visual-tools-10-0 gcc-5-aarch64-linux-gnu-base gcc-5-cross-base libasan2-arm64-cross
  libatomic1-arm64-cross libc6-arm64-cross libc6-dev-arm64-cross libclang1-3.6 libgcc-5-dev-arm64-cross libgcc1-arm64-cross libgomp1-arm64-cross libgsoap8
  libitm1-arm64-cross libllvm3.6v5 libnunit-cil-dev libnunit-console-runner2.6.3-cil libnunit-core-interfaces2.6.3-cil libnunit-core2.6.3-cil
  libnunit-framework2.6.3-cil libnunit-mocks2.6.3-cil libnunit-util2.6.3-cil libpng16-16 libpython-dbg libpython2.7-dbg libstdc++-5-dev-arm64-cross
  libstdc++6-arm64-cross libubsan0-arm64-cross libvncserver1 libxmu-dev libxmu-headers linux-libc-dev-arm64-cross python-dbg python-kerberos python2.7-dbg
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] 
Setting up ubuntu-advantage-tools (27.0~16.04.1) ...
Traceback (most recent call last):
  File "<string>", line 2, in <module>
ModuleNotFoundError: No module named 'uaclient'
dpkg: error processing package ubuntu-advantage-tools (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 ubuntu-advantage-tools
E: Sub-process /usr/bin/dpkg returned an error code (1)

The command python is linked to python2.7 and python3 is linked to python3.5 using alternative system.(update-alternatives). What can I do next?

ADD :
I saw somewhere I have to reinstall opca-client so did this,

ckim@chan-ubuntu:~$ sudo pip3 install --upgrade opcua-client

and then I saw a warning about pip version, so I did sudo pip install --upgrade pip
and then sudo pip3 install --upgrade opcua-client but now see this error below :

....
Do you want to continue? [Y/n] 
Setting up ubuntu-advantage-tools (27.0~16.04.1) ...
Traceback (most recent call last):
  File "<string>", line 2, in <module>
ModuleNotFoundError: No module named 'uaclient.entitlements'
dpkg: error processing package ubuntu-advantage-tools (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 ubuntu-advantage-tools
E: Sub-process /usr/bin/dpkg returned an error code (1)

While trying to install qemu-5.2.0, I found the build method has changed to mesa.(I don't know why they change things sometimes to make our lives difficult... :) ) Under build directory, I did ../configure --target-list=aarch64-softmmu --enable-debug as usual, and it gave me at the last line

ERROR: Could not detect Ninja v1.7 or newer

I tried installing ninja by sudo apt-get install ninja and in removed old version and re-installed ninja. But as you can see, the installed ninja version is too low. (it expects 1.7 or newer)

ckim@chan-ubuntu:~$ dpkg -l | grep ninja
ii  ninja                                                       0.1.3-2                                                     amd64        Privilege escalation detection system for GNU/Linux
rc  ninja-build                                                 1.5.1-0.1ubuntu1                                            amd64        small build system closest in spirit to Make

What is the best way to install Ninja 1.7 or newer? (I'm on ubuntu 16.04)

ADD :
I found you can install ninja 1.7 on ubuntu 16.05 : git clone github.com/ninja-build/ninja.git, then cd ninja; git checkout v1.7.0; ./configure --bootstrap. now ninja is built on that local directory. you link to previous ninja executable like /usr/bin/ninja. this works ok. (but as others said, upgrading to higher version of ubuntu might be better)

I have pip 8.1 installed and I wanted to upgrade to > 9.0.1 (to install matplotlib for python 2.7). I saw How to upgrade pip to latest? and did

sudo -H pip3 install --upgrade pip
sudo -H pip2 install --upgrade pip

but after than, if I type pip --version, I get

ckim@chan-ubuntu:~$ pip --version
Traceback (most recent call last):
  File "/usr/bin/pip", line 9, in <module>
    from pip import main
ImportError: cannot import name main

This had I experienced before and I knew the solution(Hmm. sounds like German word order..:)) , so I did

sudo python3 -m pip uninstall pip && sudo apt install python3-pip --reinstall
sudo python -m pip uninstall pip && sudo apt install python-pip --reinstall

and then I type pip --version and get

pip 8.1.1 from /usr/lib/python2.7/dist-packages (python 2.7)

This is back to 8.1.1. How can I upgrade to newest version?

ADD : I'm using 16.04.5 LTS. This in system environment.(ok in python 2.7 virtual environment)

I know in ubuntu, I can use Screenshot application using which I can take a screen shot for selected window. This means there is the application already on ubuntu. What's the command line command for that application? (I know gnome-screenshot lets us take the whole screenshot, but I want to select a region when taking the shot.)

I recently received a new ubuntu 16.04 machine.
I installed tightVNC server and acccessing it using RealVNC from my windows 10 machine. For window manger, I'm using Xfce4. But when I press alt-tab (set to switch windows), very often the VNC is disconnected and I have restart the VNC connection (remove /tmp/.X1-lock and /tmp/.X11-unix .. and vncserver -geometry.. :1).
And this happens so often this morning and drives me crazy. I used to use centos and I expected everything will be breeze in installing but I seem to have more problems in ubuntu 16.4. How can I fix this problem?

I've been using VNC for many years but I don't know why this happens sometimes. With a new Ubuntu 16.04 machine, I first tried using Vino. It worked well, but I decided it is rather slow, so I decided to use TightVNC with the Xfce4 window manger. However I get this "grey screen" (I have experienced it before couple of times..) again.
My xstartup is :

#!/bin/sh

xrdb $HOME/.Xresources
xsetroot -solid grey
startxfce4 &

and the log file is :

24/08/18 09:47:09 Xvnc version TightVNC-1.3.10
24/08/18 09:47:09 Copyright (C) 2000-2009 TightVNC Group
24/08/18 09:47:09 Copyright (C) 1999 AT&T Laboratories Cambridge
24/08/18 09:47:09 All Rights Reserved.
24/08/18 09:47:09 See http://www.tightvnc.com/ for information on TightVNC
24/08/18 09:47:09 Desktop name 'X' (kimchan:1)
24/08/18 09:47:09 Protocol versions supported: 3.3, 3.7, 3.8, 3.7t, 3.8t
24/08/18 09:47:09 Listening for VNC connections on TCP port 5901
Font directory '/usr/share/fonts/X11/75dpi/' not found - ignoring
Font directory '/usr/share/fonts/X11/100dpi/' not found - ignoring
/usr/bin/startxfce4: X server already running on display :1
Xlib:  extension "RANDR" missing on display ":1".
xfce4-session: Another session manager is already running

24/08/18 09:48:08 Got connection from client 129.254.132.39
24/08/18 09:48:08 Using protocol version 3.8
24/08/18 09:48:12 Full-control authentication passed by 129.254.132.39
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding 16
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding 22
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding 21
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding 15
24/08/18 09:48:12 Using zlib encoding for client 129.254.132.39
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding -314
24/08/18 09:48:12 Enabling full-color cursor updates for client 129.254.132.39
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding -223
24/08/18 09:48:12 Pixel format for client 129.254.132.39:
24/08/18 09:48:12   32 bpp, depth 24, little endian
24/08/18 09:48:12   true colour: max r 255 g 255 b 255, shift r 16 g 8 b 0
24/08/18 09:48:12   no translation needed
24/08/18 09:48:12 Using raw encoding for client 129.254.132.39
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding 22
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding 21
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding 16
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding 15
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding -314
24/08/18 09:48:12 Enabling full-color cursor updates for client 129.254.132.39
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding -223
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding 16
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding 22
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding 21
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding 15
24/08/18 09:48:12 Using zlib encoding for client 129.254.132.39
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding -314
24/08/18 09:48:12 Enabling full-color cursor updates for client 129.254.132.39
24/08/18 09:48:12 rfbProcessClientNormalMessage: ignoring unknown encoding -223

What is wrong here? Is X server already running on display :1 an error? And how about "RANDR" missing on display:1? And what are those many ignoring unknown encoding messages?