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Pages with category X11

  • My Story

    I have had this problem for a while now.

    On my server, I run X11 whenever I work with it. Otherwise, I quit X11 since it otherwises uses a lot of resources. This gives my users a much better experience (i.e. better browsing and a lot of it happen at night for me because I live in California and I have loads of hits from France, Algeria, Tunisia, Marocco, etc.)

    So... my wife and I both have a Unix account and we both start our own version of X11.

    Hers rarely get stuck, mine seems to get stuck once a week or once a month.

    Often, it is because after she quits I have to wait for

  • Under X-Windows, I use the QWERTY keyboard because I'm so used to it. But once in a while I want to write something with an accent or a special character. To do that I use the compose key. In my case the compose key is the Caps Lock key. So I push the Caps Lock once, and then two other keys to get the character I want. For example, the c with a cedilla is c with a comma: ç.

    The following is the content of the Compose file available on Linux Ubuntu (/usr/share/X11/locale/en_US.UTF-8/Compose):

    # UTF-8 (Unicode) compose sequence
    # by David.Monniaux
    #
    
    # Part 1 - Manual ...
  • Getting the OS

    First go to http://www.ubuntu.com and get the latest version you're interesting in. They offer server version that they support for 5 years or so. I suggest one of those if you want to run a server. This is an ISO, in generate around 600Mb so be ready to wait a few hours... Even with a really fast connection, because the transfer will be limited by the mirror in most cases.

    WARNING
    Unless you know better, I strongly suggest you get the Ubuntu Server version. Maybe a bit more annoying to use BUT it works on ALL computers. And ...
  • Argh! It happened again and I just couldn't remember the key strokes. And it's hard to find the docs about it so I write my own right here. What's all that about?!

    In X11, when you inadvertendly hit "Num Lock" on your keypad while you're holding the Shift key down, you actually turn ON this special Keypad feature: the Keypad becomes a mouse!

    Hit Shift + NumLock again, and you get out of that mode (i.e. a toggle)

  • When you use Ubuntu X11 you at times want to start an application as Root.

    In your console you'd use the sudo tool which gives the command temporary super-user powers.

    sudo my-command

    In Ubuntu Gnome you can do the same using the gksu command. So add an icon, enter the usual information, and for your command, add gksu in front of it. When clicked, you'll first get a prompt asking you your sudo password, then the command is executed as if the root user had started it.

    gksu faxanwer ttyS0
  • I got a bad one today with Debian which took me an extra hour (at least) to find out.

    It can happen to you and that's why I'm writing this page:

    X11 starts and quits right away without any error — I had some errors about the system not being able to load some modules, I removed them by fixing my XFree86 configuration file. Really, there was no errors.

    Ha! But there was ONE error. 

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  • reboot

    The action of restarting a computer is called reboot. This reloads the operating system and your different auto-start software.

    There are two types of reboots: a cold reboot and a warm reboot.

    The cold reboot is the one where you turn your computer all the way off and back on. It is considered to be the ultimate reboot which ensures that everything is alright.

    The warm reboot is when you just reboot your operating system. This means some of the hardware parts may not be fully reset as expected in a cold reboot. There are several reasons for this, at times the BIOS of your system does not give the correct signals to all the parts, and at times the signal doesn't propagate to all the parts as it should.

    This is why a warm reboot does not always work (i.e. think when you change a driver and the new driver is not able to properly reset the state of a board or chip... turning the computer all the way off and back on may resolve the problem.)