Dual booting ubuntu 20.04 LTS version alongside with windows 10

I have a great problem with regard dual booting. I have successfully downloaded Ubuntu 20.04 version, and with the help of application named Rufus I prepared bootable flash drive, then I restarted my computer and went to BIOS menu. I chose bootable flash drive and went ahead. So it was where the problem started. After checking files the entire system got stuck, and it was written that “failed to create karnel channel -22” and “Initramfs unpacking failed: Decoding failed” and after waiting for 2 hours I shut down computer manually. I have completely disappointed as I tried so many ways and searched a lot via youtube, groupmates, etc. My BIOS mode is UEFI, not Legasy. My computer model is Asus Tuf-gaming-505gt. It has a very great capacity. I allocated 1 TB entire free space for it. Before that I had installed Ubuntu 19.04 version if I remember exactly, and it was successful enough, but it could not be updated and upgraded; therefore I deleted it. Other criterions for my computer:

Intel core i7 9th generation.
RAM 16 GB
512 GB and 1 TB SSD disks
Please help me solve this problem as Linux is important for my educational life.

iso image – Is it recommended to put a custom Windows install or keep the brand’s one?

Heelo everyone,

I’ve read some thread about that, but I’m still not get a real answer.
I just got an Acer with an I7 8xxx, and a good SSD. The PC is quick, but if it can be better, that better! I’m making customs windows 10 iso with WinToolsKit to light it up, and remove all the unnecessary package to run on low config PC. I hesitate to make one for this PC, but I don’t know if I can get issues with hardware like the battery or just a bad windows build. I’m using it for study and programming.

For you, with your experience, do you recommend me to put a custom W10 iso on it?
And do you are in “let it on battery when you can” or “cable power it at soon as you can” ? (to save the battery life).

Thanks for your time.

windows – How the hell is it possible that Bitcoin Core keeps saying “X days left” every single day?

I turn my PC on every day. I don’t sleep more than 8 hours. Yet Bitcoin Core, after I verify that it has fully synced every day, keeps saying “7 days remaining” for example, as if it deletes the last week’s data every time I shut down the computer and starts over from that point every time I turn it back on again.

What gives? This has started happening only recently. 0.20.1.

How to Access a Windows VPS using Remote Desktop

How to Access a Windows VPS using Remote DesktopWindows VPS’s are widely used nowadays. They can be used for numerous purposes and could be set up according to your needs.

A typical scenario is to use Windows VPS as a web host for a website. This provides much better control and customization options compared to using a shared hosting server. You can install any application and service on a Windows VPS to better your experience. Moreover, a VPS provides a consistent performance for your website.

Other than web hosting, a Windows VPS can be used as a server for multiplayer games. A VPS is essential if you want to host multiplayer games such as CS: GO.

Another popular use of a Windows VPS is to use it as a backup for your main computer.

You can access your Windows VPS through the remote desktop protocol. RDP was developed by Microsoft to connect two remote computers through the internet.

How do I access a VPS using Remote Desktop?

Today, we will tell you how you can access your Windows VPS through various operating systems via RDP.

Windows:

Let’s start with Windows. Open the start menu, then search for “Remote Desktop Connection.” Open the program, and you would be prompted for the remote VPS’s IP address or hostname. Once you enter the IP address, it will ask you for a password if you have set one on your VPS. You can also select the resolution and color depth from the display tab.

You can also open this program by typing “mstsc” in the Run program.

macOS:

On macOS, you would need to download the “Microsoft Remote Desktop.” Open the App Store, search for the app, and download it.

When the Microsoft Remote Desktop is installed and opened, click on the “New” option. It would then prompt you for the IP address, user name, and password for the remote desktop. There are also several other options, such as the resolution and full-screen mode.

Moreover, you can also forward your local printing devices, and even swap the mouse buttons. You can also choose a local folder to be available to the remote desktop.

Ubuntu:

On computers running on Ubuntu, you can access the remote Windows VPS with the default app that is called Remmina.

Search for Remmina or RDP in the apps list and open it. Then click on the “+” icon in the top left of the app. It would then prompt you for the server’s IP address, user name, and password. You can also select the resolution and color depth. Click “Save and connect” to start the connection.

As you can see, Windows VPS’s are accessible from multiple platforms, the best part about it is with a Windows VPS RDP, you can start your work on one computer, and resume it and pick up where you left off even if you transition to a different workstation or computer.

Jon Biloh

I’m Jon Biloh and I own LowEndBox and LowEndTalk. I’ve spent my nearly 20 year career in IT building companies and now I’m excited to focus on building and enhancing the community at LowEndBox and LowEndTalk.

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windows – Oracle listener does not restart because port 1521 is not released fast enough after stop

I’m running Oracle 11g on a Windows 2012R2 server. For some reason we have some code that try to restart the listener and then perform a connection. This code has been working for years on many different servers but on one particular server, the listener cannot restart.

Here is the error found in the listener.log file when the listener tries to restart:

Started with pid=5132
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\.pipeEXTPROCipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=thehostname)(PORT=1521)))
TNS-12542: TNS:address already in use
 TNS-12560: TNS:protocol adapter error
  TNS-00512: Address already in use
   64-bit Windows Error: 48: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\.pipeEXTPROCipc)))

I’ve managed to reproduce the issue using this command:

net stop OracleOraDb11g_home1TNSListener && net start OracleOraDb11g_home1TNSListener

If I modify the command line like this:

net stop OracleOraDb11g_home1TNSListener && sleep 30 && net start OracleOraDb11g_home1TNSListener

The listener restarts correctly.

I suppose that the port 1521 is not released fast enough after stop, but I don’t know how to fix it.

For information here is the content of the listener.ora file:

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:somepathdatabaseproduct11.2.0dbhome_1)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = somevalue)
      (SID_NAME = somevalue)
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
      )
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = thehostname)(PORT = 1521))
      )
    )
  )

LOGGING_LISTENER=on
VALID_NODE_CHECKING_REGISTRATION_LISTENER=on

windows – Filtrar Usuário AD – PowerShell/CSV

Caros colegas,

Preciso ler um arquivo de CSV e filtrar os usuários dentro do AD com as informações contidas no CSV. Preciso comparar o campo CSV com o UserPrincipalName dentro do AD.

Meu script está assim:

Import-Module ActiveDirectory

$Users = “C:Scriptleiaute.csv”

Import-CSV $Users -Header UserPrincipalName | Foreach-Object {

Get-ADUser -Filter “UserPrincipalName -like ‘$‘” -SearchBase ‘OU=BHZ,OU=MG,DC=elv,DC=intranet’ | % {Set-ADUser -Identity $.’UserPrincipalName’ -Enabled $false}

Não me retorna nenhuma mensagem de erro, mas não realiza a tarefa desejada.

DNS queries from Linux failing, Windows succeeding – How to Troubleshoot?

On a small network, the router is acting as the pass-through DNS server proxy. When acting as such, DNS queries from Linux are failing, while DNS queries from Windows are succeeding with no delay.

Questions: Ultimately the question is: is there a way to get the Linux DNS queries to work through my router. Failing that, then what is causing only Linux DNS queries to fail, or if unknown then what are steps I can take to take to troubleshoot further to find out the root failure cause(s).

Network design: 192.168.2.X is the subnet. Standard cable modem with Netgear R6700v2 router at 192.168.2.1. Router supplies its own IP address as the DNS server to connected devices and passes queries through to the upstream DNS server as provided by ISP.

Several Apple, Android, Roku, and Windows devices connect and function properly. Notably, though, one native Linux machine and two Linux virtual machines running different versions of Linux Mint are failing DNS queries. The two VMs are running on other-wise functioning Windows hosts. In Windows “ping example.com” works as expected with no delay in name resolution. In Linux, even on a VM running on the same machine, “ping example.com” has a 15 second delay and fails with “temporary failure in name resolution”.

All Linux machines can have resolv.conf edited to point to the upstream DNS servers or public DNS servers and then function properly. However when they point to the router, DNS queries from only the Linux machines fail. Windows machines have been verified to be set to the router as the DNS server and all function properly.

Curiously, when resolv.conf points to the router then dig fails when run directly but succeeds when manually pointed to the same router DNS server IP address that resolv.conf it set to:

~ $ cat /etc/resolv.conf
nameserver 196.168.2.1

~ $ ping example.com
ping: example.com: Temporary failure in name resolution

~ $ dig example.com
; <<>> DiG 9.16.1-Ubuntu <<>> example.com
;; global options: +cmd
;; connection timed out; no servers could be reached

~ $ dig example.com @192.168.2.1
; <<>> DiG 9.16.1-Ubuntu <<>> example.com @192.168.2.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43446
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;example.com.           IN  A

;; ANSWER SECTION:
example.com.        72211   IN  A   93.184.216.34

;; Query time: 39 msec
;; SERVER: 192.168.2.1#53(192.168.2.1)
;; WHEN: Wed Sep 23 13:35:13 ADT 2020
;; MSG SIZE  rcvd: 56

But when resolv.conf points to a public DNS server directly…

~ $ cat /etc/resolv.conf
nameserver 1.1.1.1

~ $ ping example.com
PING example.com (93.184.216.34) 56(84) bytes of data.
64 bytes from 93.184.216.34 (93.184.216.34): icmp_seq=1 ttl=54 time=30.0 ms


 $ dig example.com

; <<>> DiG 9.16.1-Ubuntu <<>> example.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5675
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;example.com.           IN  A

;; ANSWER SECTION:
example.com.        82272   IN  A   93.184.216.34

;; Query time: 39 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Wed Sep 23 13:47:49 ADT 2020
;; MSG SIZE  rcvd: 56

~ $ dig example.com @192.168.2.1

; <<>> DiG 9.16.1-Ubuntu <<>> example.com @192.168.2.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 65116
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;example.com.           IN  A

;; ANSWER SECTION:
example.com.        82267   IN  A   93.184.216.34

;; Query time: 39 msec
;; SERVER: 192.168.2.1#53(192.168.2.1)
;; WHEN: Wed Sep 23 13:47:57 ADT 2020
;; MSG SIZE  rcvd: 56

windows server 2008 – Can’t connect to network share

For some reason we can’t connect to the shares on our server. Trying to investigate the problem we noticed the following. If we use command prompt and type in

net view 127.0.0.1

we get a list of the shares on our server, as expected. However when we type in

net view 10.0.0.1 (ip address of network card)

It takes the server very long to respond and eventually we get an 53 error. We have no idea why. We tried disabling the firewall because we thought this may cause it, but it had no effect. Any thoughts on what might cause this behaviour?

Network card:

  • Ip address: 10.0.0.1
  • Subnet mask: 255.255.255.0
  • Default Gateway: 10.0.0.254

OS: Windows SBS 2008