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I think there is a /var/log/secure log file for sshd. May you can see what's happening there. 
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I think there is a /var/log/secure log file for sshd. May you can see what's happening there.

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how you are trying to connect to the ubuntu virtual machine? first you do ssh to the server using normal user and change to root using su. or directly connect to the server using root credentials?<br />
apart from the error stated by the dfke, also check the virtual machine error log, vmware.log, which you can find in the root folder of the virtual machine.<br />

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how you are trying to connect to the ubuntu virtual machine? first you do ssh to the server using normal user and change to root using su. or directly connect to the server using root credentials?
apart from the error stated by the dfke, also check the virtual machine error log, vmware.log, which you can find in the root folder of the virtual machine.


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Hello, <br />
<br />
I am using SSH to connect to an Ubuntu 10.04 LTS virtual machine running on top of VMWare ESXi. When installing programs or initiating some X11 screens, the SSH session abruptly terminates and breaks the connection. &nbsp;This does not happen to all program installations or X11 screens, but it will consistently happen to many unrelated screens.<br />
<br />
Are there any suggestions on what might cause this problem or ways I might diagnose the cause?<br />
<br />
Thank you
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Hello, 

I am using SSH to connect to an Ubuntu 10.04 LTS virtual machine running on top of VMWare ESXi. When installing programs or initiating some X11 screens, the SSH session abruptly terminates and breaks the connection.  This does not happen to all program installations or X11 screens, but it will consistently happen to many unrelated screens.

Are there any suggestions on what might cause this problem or ways I might diagnose the cause?

Thank you

SSH session terminates unexpectedly

A Linux distribution is an operating system made as a software collection based on the Linux kernel and, often, on a package management system and are available for a variety of systems. A typical Linux distribution comprises a Linux kernel, GNU tools and libraries, additional software, documentation, a window system (the most common being the X Window System), a window manager, and a desktop environment. Most Linux systems are open-source software made available both as compiled binaries and in source code form, allowing modifications to the original software. Over three hundred distributions are in active development, including commercially backed distributions (such as Fedora, openSUSE and Ubuntu) and community-driven distributions (such as Debian, Slackware, Gentoo and Arch Linux).

Linux Distributions

VMware, a software company founded in 1998,  was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies.

VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture.  Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.