![]() I was reading, switched tabs in one browser window, and upon clicking the tab everything froze but for the few things just described. But Ctrl+ Alt+ F3 did switch to a text term, Ctrl+ Alt+ F1 brought back the X windows session. Not even moving the cursor onto another window, when I have focus-follows-mouse, changes the window frame highlighting. The PrtScn made a popup saying I could drag a rectangle (but not) or hit ESC (works). In this article, let me give you a closer look at it. In my case, just minutes ago, everything was hung except the mouse moved the cursor, but the mouse did no more. Based on what you see on the screen you can find out what GUI you are using right now. System Monitoring Center is a useful GUI tool that provides plenty of necessary insights. ![]() ![]() Now everything's back to normal, no reboot or loss of anything involved. ![]() You can install Postman on Linux by manually downloading it, using the Snap. I think 15. Ubuntu gui is typically on F7, other F keys are virtual terminals. I could then switch back to the first workspace, kill Chromium, which I had by then figured had crashed and was hogging all keyboard and mouse events. You may encounter a Library not loaded error if you unzip and install. Try pressing various combination of Ctrl+Alt+Fkey. This did switch workspaces, and doing so somehow unhitched whatever was blocking mouse and keyboard actions. Not yet mentioned but might work in some cases - try CTRL+ ALT+ RIGHTARROW or LEFTARROW. "Call oom_kill, which kills a process to alleviate an O ut O f M emory condition", which (at least for me) often kills the program that is causing the issue, as it is the largest RAM consuming process running at the time. In the Software Center window, type task manager in the search bar. then assuming MagicSysRq support is compiled into the kernel (From ), on a QWERTY keyboard (alternatives for the below f are provided in the aforementioned article), one can try: Hit the super key on your keyboard and then click on the Software Cente r icon from the Favorites applications on the left sidebar. Switch to another virtual console ( Ctrl+ Alt+any one of F1-6), to initiate a pkill (or similar, as detailed above).Use keyboard/mouse to A) Run the Ctrl+ Alt+ * option above, B) Navigate to a utility that can be used to terminate the offending program, C) Launch a terminal to initiate a pkill (or similar, as detailed above).It’s become something of a standard in the community as a show of performance on a system.Adding one more possible solution to the mix, and (apart from the accepted answer) one of the least destructive of the answers so far. Htop is a tool that builds a little on top without making it too complicated. These are great tools that didn’t quite make the list for one reason or another. Netdata is an amazing tool that gives you very fine-tuned resource usage statistics with the option to set up alerts as well. Additionally, it’s available to install as a container via Docker, so those who are interested are more than welcome to pull down the container and run it with a simple command. One of the great parts is that, aside from dependencies needed, it’s essentially one command to install. This is easily the most granular of all the tools on the list, automatically pulling in information on hardware usage across the machine as well as per-core CPU usage graphs, network packet tracing separated by IPv4 vs. Another web-based system monitor for Linux, Netdata is an incredible tool.
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