Expanding setupTermuxArch so visually impaired users can install Orca screen reader (assistive technology) and have VNC support added easily. about termuxarch HOT 70 CLOSED

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I have very very positive experience with newly shared memory implementation which work directly in Proot binary module. Screen reader Orca work much more stable and I can for example. Switch to The desktop by pressing CTRL}}+ALT+d much more faster even if mate-terminal display many lines when some app is being compiled. I can also interrupt speech very often while building some app without issues at all. When Proot shared memory function have not been implemented, it have caused issues. Orca have frozen. I did not compared with android-shmem.so but currently, it is real Linux miracle on Android. Tigervnc can be run with no need to disable shared memory. And VNC protocol is using memory mapping very often. I Am very surpriced, that even so intensive memory tasks are not causing conflicts with Android kernel or with Android apps which run in background. I have very positive emotions thanks to team work of experienced developers. I Am also dreaming how to limit amount of memory blocks and its syzes which are being transferred when using X11 apps. I will try to set The resolution of Tigervnc to The 640 x480 and I will set colour depth to 8 Bit colours. Since I do not see at all and I need to save CPU cycles and memory allocations. It will make build in phone multichip more happy. Really thank all of you, who are intensively debugging complex C code. I have observed MR Bednarski during his programmers work. And I feel that I Am among elite professionals. In some cases, my ideas are not very easy to proceed, but I will always do my best to debug and test with you to bring professional opensource Linux operating system for every one.

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I have next good notice for you.
It is even possible to use Espeak-ng with Pulseaudio even if user is using Qemu emulated architecture.
No speech bad noise, sure there is some time delay when comparing with Linux distro which run directly by using Proot and CPU which is not emulated. But to be honest, I AM very nicely surpriced by Qemu, that it do not cause crashes while using speech engine and sound. Sure. It is very probably caused by The important fact, that Qemu do not execute Linux kernel and its related various kernel loops and other background threads. So it have more system resources. I will try to install Mate desktop and I will also try orcaconf script. I must finish its job because I have terminated installation of Mate yesterday, because I have been tired.

_ have some positively meaned suggestion for you.
Please try to make The lifes of users more easier. COnfigure download repository mirror to The world wide server for example to avoid The necessary manipulation with nano and Bash script. I do not know, if it is possible to use some Android fully accessible text editor for such task, because using Windows terminals based on SSH protocol causes severe issues with screen readers. So I will try to use some ANdroid text editor, if it will allow Me to access /termux folder. But if Android data isolation routines will prevent other app to access The space used by Termux, it would be a good compromise to simply set default worldwide mirror. Since slow connection is better than The situation, when user will accidentally corrupt configuration files, ETC.

Thank you very much for yours time and for yours help. So I will install mate and I will try The sound. Sure, I will have to wait more than one second before speech will be pronounced, but it work and this is A miracle on non rooted device without Kqemu kernel module, which is able to run accelerated Qemu. Unicorn is good app, but I Am afraid, that it will not be able to run too much faster than Qemu. It will very probably never replace so fast execution of emulated environment like Kqemu kernel module can achieve. But now, we are near to The next epoch. We can run foreign architecture on a non rooted Android device without severe stability issues. And this is very very good situation. I will be patiently testing.

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I have started to test The new command visualshortcut. I have removed previously installed ArchLinux system by using purge option. I will let you know about The result. To find The best option name. Its aim is to allow visually impaired user to run Emulated distro by using Qemu with orca. So may be, that it would be good to name it orcaqe or viorcaqe as visually impaired orca Qemu.

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citing Originally posted by @xeffyr in termux/termux-app#376 (comment)

Look my answers above. No one here will bother to implement a tool for userspace image mounting. Please understand that possibilities of Termux maintainers are finite.

Those who really needs mounting as non-root can use QEMU system-mode.

citing Originally posted by @xeffyr in termux/termux-packages#6141 (comment)

Start with these:

• x86 (32bit): https://dl-cdn.alpinelinux.org/alpine/v3.12/releases/x86/alpine-virt-3.12.2-x86.iso
• x86_64 (64bit): https://dl-cdn.alpinelinux.org/alpine/v3.12/releases/x86_64/alpine-virt-3.12.2-x86_64.iso

Boot downloaded image (basic):

qemu-system-i386 -m 512M -nographic -cdrom alpine-virt-3.12.2-x86.iso

Modified to boot from URL with no local image:

qemu-system-i386 -m 512M -nographic -boot d -drive file=https://dl-cdn.alpinelinux.org/alpine/v3.12/releases/x86/alpine-virt-3.12.2-x86.iso,readonly=on,media=cdrom

In both cases output is printed directly to console as image supports serial line emulated by QEMU.
CTRL+a x to terminate VM.

Extending command line by switching to VirtIO devices (rng, nic, drives), increasing TCG cache (e.g. by -accel tcg,tb-size=512), using musl-based & non-systemd distributions like Alpine Linux makes execution under QEMU faster.

Arch Linux can be booted too, yet it is slower and ISO will require many RAM (1-2 GB, maybe more). Probably will have issues with text-only mode and you will need a VNC.

Originally posted by @SDRausty in SDRausty/termux-archlinux#74 (comment)

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The TermuxArch commands mateconf and orcaconf are added so visually impaired users can use these programs in their smartphones easier. Testing commands mateconf and orcaconf is requested.

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@JanuszChmiel for sharing. I will take a look and see what can be done.

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This commit 8a930a2 enhances support for orcaconf. It is ready for retesting.

Error: target not found : vncserver

Do you know what the correct package name should be for vncserver or is tigervnc sufficient?

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This code:

_ADDorcaconf_() {
_CFLHDR_ root/bin/orcaconf "# orcaconf contributor https://github.com/JanuszChmiel" "# Reference SDRausty/termux-archlinux#66 Let us expand setupTermuxArch so users can install Orca screen reader (assistive technology) and also have VNC sup
port added easily." cat >> root/bin/orcaconf <<- EOM [ -d $HOME/bin/lock ] && printf "%s\\n" "Already confugured orca: DONE 🏁" && exit
[ -f $HOME/bin/lock/orcaconf.lock ] && printf "%s\\n" "Already configured orca: DONE 🏁" && exit
nice -n 18 pci espeak-ng mate mate-extra orca pulseaudio-alsa tigervnc || printf ”%s\n" "failed" && exit
printf ”%s\n" "export DISPLAY=:0
export PULSE_SERVER=127.0.0.1
unset DBUS_SESSION_BUS_ADDRESS
unset SESSION_MANAGER" >> $HOME/.profile
[ ! -f $HOME/bin/lock/orcaconf.lock ] && touch $HOME/orcaconf.lock # orcaconf EOF EOM
chmod 700 root/bin/orcaconf
_ADDmateconf_() {
_CFLHDR_ root/bin/mateconf "# mateconf contributor https://github.com/JanuszChmiel " "# Reference https://github.com/SDRausty/termux-
archlinux/issues/66 Let's expand setupTermuxArch so users can install Orca screen reader (assistive technology) and also have VNC sup
port added easily." cat >> root/bin/mateconf <<- EOM vncserver -kill :0
vncserver -extension MIT-SHM -localhost -geometry 1024x768 -depth 24 -name remote-desktop :0 -SecurityTypes=None
# mateconf EOF
EOM
chmod 700 root/bin/mateconf
}
_ADDmateconf_
}

creates both mateconf and orcaconfig.

Thanks to The error, script fail to continue to work.
Error: target not found : vncserver

@JanuszChmiel thank you for sharing the command output. I think the refinement is quite an improvement over the initial version. Please run orcaconfig and let us know whether it functions as expected. As far as mateconf is concerned, it's fine to try this command too. It should be run after orcaconfig completes its task successfully. Thanks for helping to build this interesting topic.

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@JanuszChmiel are you familiar with the exd command:
cat bin/exd; export DISPLAY=:0 PULSE_SERVER=tcp:127.0.0.1:4712

It was developed from this issue, "A few questions about Arch Linux in Termux PRoot #59". Are you familiar with the exd command?

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More information about the exd command:
https://github.com/SDRausty/TermuxArch/issues?q=is%3Aissue+exd

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You have made excellent script.

Thank you @JanuszChmiel very much. The excellency of the TermuxArch script would not be possible without help from TermuxArch users and developers like you.

I am currently testing the new TermuxArch command orcaconf in Arch Linux x86 and x86_64 with QEMU emulation; setupTermuxArch qemu. Since orcaconf also installs python, it appears prudent that the TermuxArch command csystemctl should also be integrated into orcaconf. Do you agree?

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I can only
choose The architecture. How to run some chosen architecture?

Thank you for the comment @JanuszChmiel; The option that you mentioned is awaiting future implementation.

At present setupTermuxArch qemu is a way of accessing this feature:

1. If you are on 32-bit Android or mixed 32-bit 64-bit architecture, choose option for 4) x86 for best compatibility.
2. If you are on 64-bit Android architecture, you can easily choose option 5) x86_64.

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I agree. Command is very important too.

Implemented with this e4c644e#diff-14a8a6d6a93e31b5c315b01ec9d90f19dff8d888862fe9fb34aace02d8001805R780 commit. Thank you for sharing your opinion.

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What is your impression of QEMU emulation in Android?

I would like to add one more emulator; It is called Unicon. Have you tried Unicon emulation in your smartphone?

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pkg list-a|f corn

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

1195:unicorn/stable,now 1.0.1-7 aarch64 [installed]
1196:unicorn-static/stable,now 1.0.1-7 aarch64 [installed]

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My goal is to allow visually impaired users with really basic Linux knowledge to have fully automated ArchLinux setup.
What could I do to make my dream real?

I very glad you are pursuing your dream right here and now 🎼 🎵 🎶

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You have mentioned versions of Linux that are not Arch Linux during our conversations. Installation for many versions of Linux is supported with TermuxArch. Download and configuration is not presently implemented, and hopefully will be in the future.

The copy feature supports all versions of Linux that publish a root file system. Command setupTermuxArch h has more information:

setupTermuxArch h|f copying

56: [./path/systemimage.tar.gz [customdir]] Install directory argument is optional. Network install can be substituted by copying systemimage.tar.gz and systemimage.tar.gz.md5 files with 'setupTermuxArch ./[path/]systemimage.tar.gz' and 'setupTermuxArch /absolutepath/systemimage.tar.gz'. Both '*.tar.gz' and '*.tar.gz.md5' files are required for this process to complete successfully. Installation for many versions of Linux that publish a root file sysytem is supported with this TermuxArch festure. Download and configuration is not presently implemented, and hopefully will be in the future. Create an issue and pull request at GitHub to implement these features.

58: [systemimage.tar.gz [customdir]] Install directory argument is optional. Network install can be substituted by copying systemimage.tar.gz and systemimage.tar.gz.md5 files with 'setupTermuxArch systemimage.tar.gz'. Both '*.tar.gz' and '*.tar.gz.md5' files are required for this process to complete successfully. Installation for many versions of Linux that publish a root file sysytem is supported with this TermuxArch festure. Download and configuration is not presently implemented, and hopefully will be in the future. Create an issue and pull request at GitHub to implement these features.

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it appears prudent that the TermuxArch command csystemctl should also be integrated into orcaconf. Do you agree?

sure I agree. Command is very important too.

It seemed to cause an error in the emulated environment very similar to the one sudo creates as well. Hence csystemctl has been dropped from orcaconf, pending further testing...

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How to run some chosen architecture?

Choosing the correct mirror is the next step. The command getprop might be very useful in answering the next question for the visually impaired user.

Do you have a suggestion to resolve for the visually impaired user?

How to run some chosen architecture?

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The command setupTermuxArch v[isuallyimpared] [optionemulatedarchitecture] [optioncountrycode] might be able to assist the visuallyimpared user. The two options can be absorbed by the v command.

The user then would only want to use setupTermuxArch v as the startup command as both the emulated architecture and the nearby mirror would be chosen for them. @JanuszChmiel do you agree with this concept of accessing this feature?

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The first implementation of command setupTermuxArch [v[isualshortcut] [refresh] [customdir]] is now accessible with this 8359287 commit.

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This 199ea40 commit renames script mateconf to orcarun. I hope that I am following up with the commands you have shared correctly @JanuszChmiel. If you have comments, please share them here.

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The new command orcarun runs orcaconf if orcaconf was not used:

The new setupTermuxArch option visualshortcut currently defaults to x86 emulated architecture. I hope to get this automated for x86_64 emulation sometime in the future.

The choose nearby mirror function currently wants automation; What are all the possible Android getprop country codes?

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How to identify the android device is 32-bit or 64-bit?

https://software.intel.com/content/www/us/en/develop/blogs/how-to-identify-the-image-is-32-bit-or-64-bit-user-space.html

This information should be useful in automating which architecture to install:

The new setupTermuxArch option visualshortcut currently defaults to x86 emulated architecture.

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The new setupTermuxArch option visualshortcut currently defaults to x86 emulated architecture.

This af60218 commit adds x86_64 architecture emulation support for this option. The user does not need to choose the optimal emulation type as this is now derived from the smartphone:

1. 32-bit defaults to x86
2. 64-bit defaults to x86_64

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This ef04f9a commit revises option visualshortcut so x86 and x86_64 Android devices do not use architecture emulation.

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@JanuszChmiel this new option is ready for retesting; The visually impaired user will still want assistance when choosing the correct mirror:

What are all the possible Android getprop country codes?

Should either command orcaconf or orcarun also be run for the visually impaired user?

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Can you also please suggest a new name for this option we are working on?

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I have installed fresh system by using visualshortcut command. Firstly, system have downloaded The archlinuxbootstrap archive. After system have unpacked it, script have recalled nano editor with special configuration lines. I have removed # character before worldwide server. And system have downloaded other needed tarbal. But many work will be required.

1. none of The repositories are working. so pacman is unusable for now when running.
   But it seems to Me, that it really run Qwemu and X86 architecture.

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Here is detailed screen output from The installation process.

visualshortcut.txt

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Thank you for sharing; The names you suggest sound very good. Recent extensive multiple tests seem to confirm that QEMU is bit specific. 32bit on 32bit is ok. 64bit on 64bit is ok too. Mixing 32bit on 64bit, or visa versa does not seem to be recommended; Are you finding similar results @JanuszChmiel?

that it really run Qwemu and X86 architecture.

What is the output of um in Arch Linux please?

none of The repositories are working

Can you ping these repositories? Do the come up in an Internet browser?

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I will try ping command.

If the ping command is not found, please use setupTermuxArch u: [u[pdateTermuxTools] [refresh] [customdir]] Developing implementation : Update installation with Termux tools. The ping command should be accessible after running this command if it is not initially present in Arch Linux in Termux PRoot.

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Do you think, that we have chances to configure repositories for X86 64

Please make sure one of the mirrors is uncommented in the mirrorlist file. If the mirror pings, you should be able to use the mirror.

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positive experience with newly shared memory implementation

Thank you for confirming; This is important information.

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You are welcome @JanuszChmiel and your help is helping to usher in this new epoch. Thank you very much.

very very positive experience with newly shared memory implementation which work directly in Proot binary module

Yes, I agree. This new change is a milestone!

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CPU will over burn quickly,

This does not appear to be possible on modern devices. Smartphones have many temperature sensors on board that throttle usage if the temperature gets too high.

This can have nothing to do with usage 🧑‍🏭; Just leaving a smartphone in the 🌞 sun can trigger CPU throttling. If you want to see CPU throttling in action, you can generate an image with Povray in Termux like this one:

This will require much time and many resources when generating images from source code at higher resolutions (+4K). You can view the code used to create this image at this link. I do not exactly remember how I was monitoring the smartphones building Povray images more than three years ago, and exactly which Android versions they were.

The TermuxPovray project was first published more than three years ago. If you are interested in the the topic of CPU throttling, I was monitoring readings directly from the /proc directory in Termux then, and I am not sure if temperature monitoring in the way employed during testing directly from /proc then is still possible on newer Androids today.

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Dear Mr Rausty,
Thank you for yours excellent setupTermuxArch.bash script update. Which allow to use v option with no need to manually edit some file with nano text editor. And image is perfectly downloaded and Qemu is running. I have also found out, how makeyay is useful. When I install non emulated distro, I can install many packages available for now only by using .pkg script files from Aur. YAY even allow Me to build package even if .pkg script contain other architecture than my phone is using. So I do not have to change architecture manually by editing .pkg scripts. Very well done. I will open new topic on Github. It will contain step by step instructions how to make LXDE usable with Orca and ArchLinux on Android devices. Because LXDE do not use system bus communication at all, so no errors and it allocate less Ram than Mate. I will labour to make Orca speaking on LXDE and then I will introduce The procedure how to make LXDE working by changing Openbox window manager hot keys assingment. So I will begin with new work.

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I am @grieving loss; My service animal Harper was shot downtown while riding buses (as she is allowed to) by a uniformed police officer in Flint, Michigan USA; https://serviceanimals.github.io/Harper/

I asked the discharging officer, "Would you get two notches in your grip was she a guide dog?"

Addressing the discharging officer; Mam, "You do great work! Had you asked your supervisor, 'Can I work with my service dog too?'" I believe Service Animal Natalie Harper would be doing well today.

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Here are important information to make Orca to work with LXDE desktop and its apps.
I have found those info on Lubuntu Wiky page.
export SAL_USE_VCLPLUGIN="gtk" GTK_MODULES="gail:atk-bridge"
dbus-run-session orca &
Or you can type
dbus-launch orca &
I do not know, what is better. Using dbus-launch or dbus-run session. Dbus experts could tell Me The advice.
then,
dbus-launch lxappearance &
choose The others TAB. Locate The checkbox allow accessibility in GTK+ apps. I Am experiencing severe problem. startlxde refuses to run normally. I Am getting error related to session. And Apply button.Very important task! It is also necessary to edit lxde-rc.xml configuration file. File is located in /home/username/.config/openbox
It is necessary to remap many hot keys. Instead to use ALT it is necessary to add other key modifiers. TO prevent errors while manually editing, there is obkey Python app which uses GTk. I have used makeyay and yay obkey to install and compile this app.
But to edit .xml file, user have to rename The .xml file from lxde-rc.xml to rc.xml. In other case, obkey app will crash because of I/O error. I will test if Obkey will be compatible with up to date rc.xml if it will not crash for other reasons. ALT key uses other scan code for physical keyboards available by connecting those keyboards to IBM/PC compatible computer. So Lxde do not react on such hot keys. Next problem is, that Android accessibility suite and Android system UI app reserves ALT for important operations. So it is not possible to use ALT for creating hot keys by this kind.

Now I must solve startlxde some session pid error and I will be very near to The goal, that Lxde will work with Orca. LXDE have some accessibility issues which do not depend on The fact, that we are using striclty userspace variant of Linux without Kernel and Udev. C programmers of Lxde do not have The time to solve those issues, but it is sad, because Lxde would be 100 % ideal desktop environment for visually impaired Orca users. But it is possibility for advanced visually impaired programmers who knows C language in dddetail and somebody have The chance to solve those issues.
LXDE uses not only less RAm than Mate, but it also do not call system bus at all. So no terminal output errors. LXDE also do not contain so much background processes like Mate. For example, various applets or panels.
Ideal state will be when hotkeys will recall LXDE main menu and when user will have The chance to browse Desktop. It will be The last desktop environment whivch I will want to make usable with Proot and ArchLinux, because other desktop environments are using much more RAm, much more CPU cycles and its accessibility is not good and The reactivity while using then even on standard systems. So user will have The freedom to choose between Mate or LXDE.

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@JanuszChmiel have you heard the news regarding the death of our coder helper Harper? She was shot dead on 20201201 @1630. No water quality specialists are allowed to live in Flint, Michigan USA @present, only human set free water quality forgers!

Why was my water qualty specialist https://serviceanimals.github.io/Harper/ shot dead by Flint City Michigan USA police?

I asked the Flint City Mayor. They have not replied.

Do you have a guide dog? Why not?

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I have opened this qemu-user-i386 error #6141 issue which is currently closed regarding this error when using qemu-user:
proot info: vpid 1: terminated with signal 11

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The newly created script qemugeti686.bash attempts to download an i686 architecture ISO file, and then attempts to boot it with QEMU in Termux.

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output disappear

As boot boots mute; ⬛ :blankscreen:

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Command taqemualpinex86.bash is ready for testing with this 3aab88c commit:

Welcome to Alpine Linux 3.12
Kernel 5.4.83-0-virt on an i686 (/dev/ttyS0)

localhost login: root
Welcome to Alpine!

The Alpine Wiki contains a large amount of how-to guides and general
information about administrating Alpine systems.
See <http://wiki.alpinelinux.org/>.

You can setup the system with the command: setup-alpine

You may change this message by editing /etc/motd.

localhost:~#

Please share your experience here.

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Thank you for testing and sharing.

CTRL+c do not return me to a Termux session.

[user22:58TermuxArch]$ f CTRL taqemualpinex86.bash 31:printf "%s\\n\\n" "To exit the QEMU session, please use the 'CTRL+a x' keys; Sleeping 4 seconds... " 33:printf "%s\\n\\n" "Please be patient as file '$X86REALEASE' is booting; Feel free to work at a new Termux session while this session completes its task. To exit the QEMU session, please use the CTRL+a x' keys; Sleeping 8 seconds... "

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proot info: vpid 1: terminated with signal 11 #141

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Stale issue message

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