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Martin Hope
mit
Asked: 2013-11-03 15:33:58 +0800 CST
  • 1

I am trying to change the keyboard layout for ubuntu 13.10 ltsp clients.

I edited /var/lib/tftpboot/ltsp/i386/lts.conf (which was empty after the install).

What works is de/german, but this is the keyboard setting that the system was installed with:

[default]
XKBLAYOUT=de

I can also change the file to

[default]
XKBLAYOUT=us

This changes all clients to an us-keyboard. But how can different clients/users use different layouts or even switch during a session?

keyboard
Martin Hope
mit
Asked: 2012-08-10 02:43:03 +0800 CST
  • 1

I am compiling erld, a program to run Erlang programs as a UNIX daemon, see

https://github.com/ShoreTel-Inc/erld/wiki

The make instructions which I followed are here:

https://github.com/ShoreTel-Inc/erld/blob/master/README

In the middle of the make step there is an error:

In file included from slay.c:25:0:
debug.h:41:6: warning: conflicting types for built-in 
  function ‘log’ [enabled by default]
slay.c:29:45: fatal error: proc/readproc.h: No such file or directory
compilation terminated.
make[1]: *** [erld-slay.o] Error 1
make[1]: Leaving directory `/home/ad/erld/c_src'
make: *** [all-recursive] Error 1

This is ubuntu 12.04 server 64:

$ uname -a
Linux lfe1 3.2.0-26-virtual #41-Ubuntu SMP Thu Jun 14 18:08:54 UTC 2012 
  x86_64 x86_64 x86_64 GNU/Linux

I was not able to add the tag "erlang" to this question. Maybe someone with more points can do it.

services
Martin Hope
mit
Asked: 2012-03-26 04:31:10 +0800 CST
  • 14

What is the standard way to turn numlock on by default on startup on lubuntu 10.04?

Lubuntu installs LXDE. I saw some aother solutions for other flavours, but maybe there is a special setting for the lubuntu flavour.

I tried already numlock=0 and numlock=1 in /etc/lxdm/lxdm.conf , but numlock stays off on the next boot.

All other operating systems, also other ubuntu systems, do have numlock turned on on the same machine after booting.

I installed numlockx, and it can change the value, but is this the standard lubuntu way to go? If so, what is the standard place in the lubuntu startup sequene to insert 'numlockx on', how do I set this up correctly?

I also looked at the included lxde keyboard configuration system gui tool, but there are only few options, numlock default not among them.

(Please before you mark this as duplicate consider if it really fits, I could not find this answered in this way. I am interestd to know the standard way for lubuntu (and not kubuntu or gnome) in detail.)

There is also an explanation of the lxdm config file here, but it does not really explain what "lxde numlock suport" means (how could a gui not support numlock?) and what the settings 0 and 1 mean:

http://manpages.ubuntu.com/manpages/lucid/man1/lxdm.1.html

If there is no other LXDE or lubuntu standard way to do it, I am planning to use numlockx and add this line:

/usr/bin/numlockx on

at the beginning of either

/etc/X11/xinit/xinitrc

or

~/.xinitrc

following the instructions found here:

http://www.cyberciti.biz/faq/how-to-linux-turn-on-num-lock-on-gnome-startup/

lubuntu numlock
Martin Hope
mit
Asked: 2011-11-15 04:50:42 +0800 CST
  • 2

I am looking for a way to create archives on the commandline with some minimal ASCII interface.

Could be for tar, zip or rar files, but should provide miniml ncurses (or other) "fake" graphical interface. I tried with midnight commander but could not find an entry in the menu to create an archive from selected files.

Also great would be to have an option "archive and test" or even better "arcive and test and delete originals on success".

software-recommendation
Martin Hope
mit
Asked: 2011-04-12 05:41:03 +0800 CST
  • 2

I am booting a 32 bit laptop with ubuntu 10.04.

I see only a splash screen during boot, in the end theer is a message that the main filesystem is mounted read only (there is only one harddisk).

I could grasp a message saying that the last check time of the harddisk is in the future. The message also told me the time that was set there. But the message disappearde to quickly and I cannot bring it back.

I checked cmos time, but it is set to UTC and correct.

(Could it be that somehow my local time and UTC was not applied correctly?)

Where can I see the messages from boot?

  • I cannot see them on the secreen because there is only an ubuntu logo while it should display interesting messages (see also grub2 deadlock situation where I am asking how to change the boot process )

  • dmesg does not show any of the harddsik problems at all

  • /var/log/boot is empty (I did not enable bootlogd yet, see http://ubuntuforums.org/showthread.php?t=49925 )

boot
Martin Hope
mit
Asked: 2011-04-12 05:16:26 +0800 CST
  • 1

During 10.04 starts it does a filesystem check. For some reason that I want to figure out, but this is another question, the harddisk is mounted read only.

I would like to boot to a rescue shell, but the grub2 menu is hidden

I cannot change the grub default config, because I have read only access to the harddisk.

I will now try and manually mount the harddsik readable to change the grub option.

Is there a secret key combination to:

  • show the grub menu anyway during boot?

  • make the splash go away during boot and see the interesting console output?

EDIT:

The answer is to hold the shift key, after the Grub Message "Starting Grub" appears.

This is also a good article about understanding grub2 or switching form grub to grub2:

http://maketecheasier.com/mastering-grub-2-the-easy-way/2009/11/19

10.04
Martin Hope
mit
Asked: 2011-02-15 15:55:23 +0800 CST
  • 5

I have the following configuration:

P == U ---------------- W

P is a HP Laserjet, connected to U, which is an Ubuntu 10.04 desktop machine with a standard gnome setup from the live cd. I just selected the HP Laserjet in the gnome printer admin and it works, I can print locally.

W is a remote windows machine, server 2003, and --- is an untrusted connection.

I wonder if I can create an ssh tunnel between U and W, so W can print using U's printer service. Which ports will I need to forward and what kind of printer must I add then on the windows machine?

EDIT: I found out I can go to http://localhost:631/ on the U machine and there is the CUPS browser gui. I will try and forward port 631 to W, and add a printer on W like http://localhost:631/printers/hp

ssh
Martin Hope
mit
Asked: 2011-02-14 13:13:30 +0800 CST
  • 8

I have installed ubuntu 10.04 on a laptop. Wifi is switched on by default on startup. I can disable it rightclicking the network manager icon in the gnome bar.

How can I set it to have wifi switched off as default?

Alternatively, how can I switch off wifi on the console?

I tried already the rfkill command but it does not list any devices and it does not switch off wifi, I tried different parameters.

This is a standard install of the Ubuntu 10.04 i386 Desktop Live CD on an IBM T40 Laptop.

EDIT A: This is the output of some rfkill commands on my system, and it does not affect the wifi of the laptop:

$ rfkill --help
Usage:  rfkill [options] command
Options:
    --version   show version (0.4)
Commands:
    help
    event
    list [IDENTIFIER]
    block IDENTIFIER
    unblock IDENTIFIER
where IDENTIFIER is the index no. of an rfkill switch or one of:
    <idx> all wifi wlan bluetooth uwb ultrawideband wimax wwan gps fm
$ rfkill list
$ rfkill list wifi
$ rfkill list all
$ rfkill list wlan
$ sudo rfkill list all
$ sudo rfkill block all
$ sudo rfkill block wlan
$ sudo rfkill block wifi
$

EDIT B: Now I found out that 

sudo ifconfig eth1 down

turns it off.

And I can turn it on through the gnome network applet again. But the applet does not reflect the change from the commandline, it stills believes wifi is switched on. I have to switch it off and on again on the applet to switch it on again, when I switched it off from the console.

Is there a better way?

This is what the syslog looks like when I switch wireless off and on again from the network manager:

NetworkManager: <info>  (eth1): device state change: 3 -> 2 (reason 0)
NetworkManager: <info>  (eth1): deactivating device (reason: 0).
NetworkManager: <info>  Policy set '24' (eth0) as default for routing and DNS.
NetworkManager: <info>  (eth1): taking down device.
avahi-daemon[660]: Withdrawing address record for fe80::202:8aff:feba:d798 on eth1.
kernel: [  971.472116] airo(eth1): cmd:3 status:7f03 rsp0:0 rsp1:0 rsp2:0


NetworkManager: <info>  (eth1): bringing up device.
NetworkManager: <info>  (eth1): supplicant interface state:  starting -> ready
NetworkManager: <info>  (eth1): device state change: 2 -> 3 (reason 42)
avahi-daemon[660]: Registering new address record for fe80::202:8aff:feba:d798 on eth1.*.
kernel: [  965.512048] eth1: no IPv6 routers present

EDIT C: It works somehow now, but in a hacky way, not very nice. I added a line to rc.local, just before exit 0:

$ cat /etc/rc.local 
#!/bin/sh -e

# turn off wifi on boot:
ifconfig eth1 down

exit 0

When I start the machine, wifi comes up, and after an instance it is turned off. This must be the effect of the standard configuration of ubuntu that turns it on, then my script ifconfig eth1 down kicks in and turns it off. And network manager does not realize that it was turned off and thinks it is still on.

It would be desirable to configure network manager's so that the standard state when turning on the machine can be on or off, and not only on

10.04
Martin Hope
mit
Asked: 2010-08-20 06:42:13 +0800 CST
  • 2

I am starting emacs remotely over an ssh connection.

But on the emacs window I cannot find a way to resize or move it. There is no fluxbox title bar visible, and I guess the title bar is above the visible viewport, because emacs starts vertically with more height than the screen has. The lower border of the emacs window is also below the viewport border, so I cannot resize the window.

I am starting emacs like this:

emacs23

This is the emacs version:

This is GNU Emacs 23.1.1 (x86_64-pc-linux-gnu, GTK+ Version 2.20.0)
of 2010-03-29 on yellow, modified by Debian

The remote system that runs emacs is 10.04 Lucid Lynx amd64. The local system is running 9.10 Karmic Koala 32 bit and Fluxbox 1.1.1-2

xorg ssh emacs fluxbox