Starteck KVM to USB crashcart install on Ubuntu 18.04 python issue - python-2.7

After installing the Startech USB Crash Cart Adapter I try to run the adapter by double clicking on the icon, and it never loads. I tried rebooting and the issue persists. When I run the adapter from the Terminal using usb-crash-cart-adapter I get the following Error:
I downloaded the Linux package from https://www.startech.com/Server-Management/KVM-Switches/Portable-USB-PS-2-KVM-Console-Adapter-for-Notebook-PCs~NOTECONS01. And I installed it using gdebi.
It appears to be a python dependency issue, but I am not sure where.

I had the same issue, which resulted in a phone call to startech and them publishing an updated driver, but that still didn't resolve the issue.
To fix it do the following steps.
CD to your directory where the file is located. Run cd /opt/usb-crash-cart-adapter/20180327/guts
In here you will see the libz.so.1 file. It is always good to make a copy of the original file just in case, so run cp libz.so.1 libz.so.1.old
Create a link to the existing libz.so.1 file on your system. Run, sudo ln -s /lib/x86_64-linux-gnu/libz.so.1
Reboot the machine.
After that your crash cart adapter should be good to go. In my case the icons where also not showing before, but were resolved with this fix.

Related

unknown error: call function result missing 'value' for Selenium Send Keys even after chromedriver upgrade

I am getting the below error while sending keys.
Result Message:
System.InvalidOperationException : unknown error: call function result missing 'value'
(Session info: chrome=65.0.3325.146)
(Driver info: chromedriver=2.33.506120 (e3e53437346286c0bc2d2dc9aa4915ba81d9023f),platform=Windows NT 10.0.14393 x86_64)
I have updated the chrome driver to 2.36 but still my code search for 2.33?
Any idea ?
I've gotten the same error, please download the last ChromeDriver version and/or update chrome browser version and it will be working fine :)
https://chromedriver.storage.googleapis.com/index.html?path=2.36/
After updating the Google Chrome browser to Version 65.0.3325.146 (Official Build) (64-bit), I'm also encountered with the same error
while sending values to the input field, here's the error message...
selenium.common.exceptions.WebDriverException: Message: unknown error: call function result missing 'value'
using Chromedriver 2.32 and Google Chrome 65.0
As I did some research on the same, I found a recent commit on Google chrome v65 changelogs which help me to resolve the issue.
Solution:
Update Google Chrome to latest stable version (in my case it's v65 on 9/mar/2018)
Download and configure latest chromedriver (v2.36).
For configuring chromedriver (on Ubuntu) follow these steps...
Extract the downloaded zip file.
Copy the extracted chromedriver file to /usr/local/bin or to the location where you usually store the executable binaries.
Add the same path (where you place the chromedriver file) to environment variable PATH as
export PATH=$PATH:/usr/local/bin
For testing the installation, restart the terminal and type this command
chromedriver --version
it would show the version of chromedriver that you just installed.
Note: If the chromedriver already installed and configured then just replace the existing driver file and If you don't know where the Chromedriver binaries already stored then try to find the file using following command
sudo find -H / -type f -iname chromedriver
It is because of the update of chrome browser version from 64.xx to 65.xx
Now you have 2 options to run your tests successfully.
Downgrade your chrome browser to previous version and with the old chromedriver which you have now.
Upgrade your Chromedriver to 2.36 version with the updated Chrome browser.
visit https://chromedriver.storage.googleapis.com/index.html?path=2.36 and download the new chromedriver.
Option 2 is better.
Replace your ChromeDriver.exe with latest version.. Same can be downloaded from Google easily.
Also its better to get it done automatically by using webDriver manager as explained below -
1. Add Mvn dependency to your project POM:
<dependency>
<groupId>io.github.bonigarcia</groupId>
<artifactId>webdrivermanager</artifactId>
<version>${webdrivermanager.version}</version>
<scope>test</scope>
</dependency>
Now in your Browser instantiation class instead of using traditional way to create driver i.e. by using System.setProperty(See belwo)...
System.setProperty("webdriver.chrome.driver","src/test/resources/drivers/chromedriver.exe");
Use below approach:
WebDriverManager.chromedriver().setup();
webDriver = new ChromeDriver(chromeOptions);
And that's all, you are done!
Use below links for your reference-
What is Browser Binary Manager how to use it for Selenium
or chkout git project for same-
https://github.com/bonigarcia/webdrivermanager#webdrivermanager-as-java-dependency
Need to update chromedriver :
In console, run: chromedriver-update 2.36
The error says it all :
System.InvalidOperationException : unknown error: call function result missing 'value'
(Session info: chrome=65.0.3325.146)
(Driver info: chromedriver=2.33.506120
The error clearly complains about InvalidOperationException
Your main issue is the version compatibility between the binaries you are using as follows :
You are using chromedriver=2.33
Release Notes of chromedriver=2.33 clearly mentions the following :
Supports Chrome v60-62
You are using chrome=65.0
Release Notes of ChromeDriver v2.37 clearly mentions the following :
Supports Chrome v64-66
Your Selenium Client version is unknown to us.
So there is a clear mismatch between the ChromeDriver version (v2.33) and the Chrome Browser version (v65.0)
Solution
Upgrade Selenium to current levels Version 3.11.0.
Upgrade ChromeDriver to ChromeDriver v2.37 level.
Keep Chrome version in between Chrome v64.x-66.x levels. (as per ChromeDriver v2.37 release notes)
Clean your Project Workspace through your IDE and Rebuild your project with required dependencies only.
Use CCleaner tool to wipe off all the OS chores before and after the execution of your test Suite.
If your base Web Browser/Web Client version is too old, then uninstall it through Revo Uninstaller and install a recent GA and released version of Web Browser/Web Client.
Execute your #Test.
If you are on Mac:
brew upgrade selenium-server-standalone
brew upgrade chromedriver
if the above two are not installed:
brew install selenium-server-standalone
brew install chromedriver
I'm running Protractor and have encountered the same issue.
The solution in my case was rather simple.
$ npm update protractor -g
$ webdriver-manager update
If you are on the latest stable Google Chrome (e.g. 67) I recommend to:
brew uninstall chromedriver
brew tap homebrew/cask
brew cask install chromedriver
These set of commands will uninstall your current chromedriver, check for updates and install the latest found (e.g. 2.40).
Use xpaths instead of class names to locate elements
After updating chrome and its drivers it didn't helped me at all!!
I don't know how much it makes sense but it worked for me when i replaced class name with xpath. This is the xpath , i used to automate sending whatsapp message using python.
driver.find_element_by_xpath('//*[#id="main"]/footer/div[1]/div[2]/div')
previously i Was Using
driver.find_element_by_class_name('Some class Name Here')
In my case the team I'm on points selenium to a specific chromedriver file we had. In order to get Selenium to use the updated chromedriver, I first installed it with brew and then created a symbolic link to point where Selenium looks for it:
brew install chromedriver
ln -s /usr/local/Cellar/chromedriver/2.36/bin/chromedriver /path/where/selenium/expects/chromedriver
On the chance this might be helpful to someone I needed an additional step:
I am on MacOS X. I did
brew upgrade chromedriver
bundle exec chromedriver-upgrade
I have the chromedriver-helper gem installed, but it is stashed and requires the "bundle exec" prefix or the shell can't find the command.
The above fixed my problem.
As mentioned by others, the latest chromedriver did the trick for me. In case you downloaded the driver manually and want to tell appium to use the new chromedriver you can do so by this command:
appium --chromedriver-executable /path/to/driver/chromedriver ....
I'm running Protractor (webdriver-manager) with Selenium in a Windows environment, and I had to do the following:
webdriver-manager update --versions.chrome="2.36" (This downloaded the new Chromedriver to the right path but didn't enable it in protractor.)
Edit %userprofile%\AppData\Roaming\npm\node_modules\protractor\config.json and changed the chromedriver value from 2.32 to 2.36.
Delete my old chromedriver_2.32.exe from %userprofile%\AppData\Roaming\npm\node_modules\protractor\selenium for good measure (not sure if that was required.)
Or:
When another Chromedriver update became needed, I was no longer able to update this way. A configuration setting still expected the old path and filename, and I couldn't figure out where to change that setting. So I just renamed the latest chromedriver to "chromedriver.exe" and stuck it in C:\Windows\system32 (which is always referenced by PATH). Crude, but effective.
If you're using gulp-protractor plugin, make sure to update it as well.
I don't know if you're still on this, but I was receiving a similar error. I had the latest version of chromedriver in my PATH and Google Chrome was updated. I run Python 3.6 on windows 10 x64 bit. What I was getting trying to select a value from a dropdown menu on a webpage. The weird thing was, it would select the dropdown value correctly and the page would be updated nicely, but I'd receive that stupid error anyway and my script would freeze. So I just made an exception error handler for it, because like I said it selected the dropdown value correctly, so I just wanted to bypass that dumb error message:
# select by value
try:
select.select_by_value('100')
except:
pass
hopefully someone finds this helpful.
The issue is because of mismatch in chromedriver and chrome browser version.
Below link specifies the versions of chromedriver supporting the chrome browser's version.
http://chromedriver.chromium.org/downloads

How to uninstall Redash

My current installation of Redash is somehow corrupted (installing it in a new PC worked fine so I know my local copy is broken), and I want to basically remove it fully and install it again.
I cannot find any documentation of how to uninstall it,
I don't find it installed as a service
I don't find it installed as a application
So how do I reinstall it???
Deleting the redash installation folder will uninstall the redash but if your installation executable is damaged then reinstalling it again alone might not help.
Check if you have any errors with your supervisor demon:
This supervisor demon is automatically started on port number 9001 on your local machine.
Go to http://127.0.0.1:9001/ and see if all the services/workers are up.
If there are any errors post back the log here.
Check if redash has created dir - /opt/redash/, Remove it if exists.
Run this bash for re-install - https://github.com/getredash/redash/blob/master/setup/ubuntu/bootstrap.sh

Installing VirtualBox on CentOS 7

error: file /lib/modules/3.14.32-xxxx-grs-ipv6-64/kernel: No such file or directory
This system is not currently set up to build kernel modules (system extensions).
Running the following commands should set the system up correctly:
yum install devel-
(The last command may fail if your system is not fully updated.)
yum install devel
vboxdrv.sh: failed: Look at /var/log/vbox-install.log to find out what went wrong.
error: file /lib/modules/3.14.32-xxxx-grs-ipv6-64/kernel: No such file or directory
This system is not currently set up to build kernel modules (system extensions).
There were problems setting up VirtualBox. To re-start the set-up process, run
/sbin/vboxconfig
as root.
Please try to disable the secure boot option and try to install the virtual box in CentOS. I've also tried the following command with root but it didn't solve the problem. After disabling the secure boot option in bios fixed the problem.
/sbin/vboxconfig

VAGRANT SHARED FOLDERS DO NOT MOUNT - Windows 7 - Vagrant 1.7.4 - Ubuntu 12.04 precise64 - VirtualBox 5.0.10 with Guest Additions

I'm following the old tutorials off of gettingstartedwithdjango.com.
This series is quite old and I'm new to Django which is why I hit that site in the first place. It became my first introduction to Vagrant. Because the series is old and there are now new versions of Django, Vagrant, etc, I've found just getting through the first tutorial was quite difficult. This was mainly just the gap between Django v1.4 and the current version 1.9 which is what I'm running, including some syntax differences in settings.py and also some discrepancies between the text errata and the video which I had to sort through. It's a pretty detailed exercise if you're completely new to all of this (which I am), so it was quite challenging, and I was thrilled when after probably 12 hours of solid effort I was able to get everything working as was being described in the video but using all new versions of software. Once I got it all set up and working, I halted my Vagrant VM for the night and when I turned it back up (vagrant up) the next morning, I found that the VM would no longer mount its shared folders, essentially rendering the Vagrant VM useless to me as I'm then unable to run code which resides on the host machine (I'm running Windows 7) from within the VM (which is accomplished via the VirtualBox shared folders feature).
Not knowing what was wrong, this prompted me to completely reinstall my Vagrant VM. I was able to get things redeployed successfully with about one hour worth of effort, backtracking through steps I had taken to successfully complete the first tutorial in the first place, in order to back to the same point where I started (before I did the previous vagrant halt). When reinstalling the Vagrant VM I noticed messages that my VirtualBox Guest Additions (4.2.0) did not match the version of VirtualBox I have installed (5.0.10), which I recalled seeing the first time but ignored because it also said this isn't usually a problem and should work (if it weren't for bad luck, I'd have no luck at all). Since for me it didn't work, this led me down a whole rabbit hole of posts from various websites including SO, which ultimately had me updating my Vagrant VM, downloading/mounting/building/installing a new version of VirtualBox Guest Additions, and reloading my Vagrant VM only to wind up in the same boat. Shared folders were still not working!
To be very specific, this is more or less what I tried based on information from many websites:
cd /home/vagrant
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install dkms build-essential linux-headers-generic
sudo apt-get install linux-headers-3.2.0-23-generic
# mounted VBoxGuestAdditions_5.0.10.iso to Vagrant VM
cd /media/cdrom
sudo sh ./VBoxLinuxAdditions.run
sudo reboot
sudo /etc/init.d/vboxadd setup
sudo reload
c:\VAGRANT\vagrant plugin install vagrant-vbguest
c:\VAGRANT\vagrant reload
I was utterly convinced this was going to resolve the issue but it didn't.
Then I found this gem:
http://ddelizia.blogspot.com/2011/02/how-to-share-folder-on-virtual-box-with.html
This shows how to, from within the Vagrant VM, mount the shared folders back to your Windows 7 host. To be specific, here's what I did when I found things were working again:
cd /vagrant
ls -la
<this yielded nothing>
sudo mount.vboxsf vagrant /vagrant # see your VirtualBox Shared Folders settings
cd ~ # /home/vagrant
cd - # /vagrant
ls -la
# this yielded the expected folders from my Win7 host
In the mount.vboxsf command above, the first vagrant (without the /) came from the Name column in my VirtualBox shared folders settings. This is essentially an alias which is used to refer to the actual path on the Win7 host, in my case: C:/VAGRANT. The second vagrant (with the /) in that command is the /vagrant folder on the Vagrant VM (linux).
Given that I spent most of today messing with this and I figure there are plenty of people who are going to run into this same or related problem, I thought I would try to help out and save you all a bunch of time. Good luck.

Vagrant / Virtualbox, shared folder out of sync when there are many file-related operation

This is not about vagrant or virtualbox guest running slowly due to slow shared folder access, we know that can be resolved more or less by enabling nfs.
It's rather about mounted shared folder go out of sync when there are many file operations within the vm (enable nfs does not prevent it from happening) .
For example, when we are installing packages, like with php composer or node.js npm inside the vm, there is a certain probability that normal composer update or npm install will fail, and once it failed, only vagrant reload will help to restore the sync folder and allow the same command to pass without problem.
Such random failure only happens when executing on shared folder (nfs or not), so apt-get upgrade won't trigger the same problem as it runs within the vm folders.
Since the same sync problem does not appear when we run composer or npm from the host server, I am wondering what could have caused it and how do we go about debugging it?
Our vagrant setup and config:
if Vagrant::Util::Platform.windows?
config.vm.synced_folder "www", "/var/www", :extra => "dmode=777,fmode=777", :owner => "vagrant", :group => "vagrant"
else
config.vm.synced_folder "www", "/var/www", :extra => "dmode=777,fmode=777", :nfs => true
end
Guest: Ubuntu 12.04 LTS x64
Host: Windows 8, Mac OSX 10.8, Ubuntu 13 (yes, they all run into the same problem randomly)
Think we have more or less discover the source of problem:
Guest Addition version (4.1.x) that comes with our Ubuntu 12 LTS box does not match current Virtualbox version (4.2.x) installed on host machine. So file sync failed.
The easy fix:
run this command within vm sudo apt-get -y -q purge virtualbox-guest-dkms virtualbox-guest-utils virtualbox-guest-x11 to remove old guest addition
install vagrant vbguest plugin so future update is taken care of automatically during up: https://github.com/dotless-de/vagrant-vbguest