Changing resolution in linux

Jan 20, 2009 by mohamed hanoosh

Use the command xrandr to list all possible resolutions available.For eg;

hanoosh@hash>xrandr
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 1280 x 1280
VGA connected 1280x1024+0+0 (normal left inverted right x axis y axis) 338mm x 270mm
 1280x1024      60.0*+   75.0     59.9
 1152x864       74.8
 1024x768       75.1     60.0
 800x600        75.0     60.3
 640x480        75.0     60.0
 720x400        70.1




To change the resolution to one of them, say 1152x864 , type
$xrandr -s 1

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TATA Indicom wireless modem in linux

Jan 10, 2009 by mohamed hanoosh

Outline
TATA indicom wireless modem is a dial up connection. The utility wvdial is used to connect to internet. The tool require several parameters (username , password, modem type, phone number ..) to be specified. The parameters required can be kept in a config file and wvdial can be called specifying that file. The file can be created manually or using other tools.


The steps are explained below.

  1. Connect usb modem

  2. Type wvdialconf

    3. This will create a file called wvdial.conf (either in current directory or in /etc ). Better you keep the file /etc (just move it).
  3. Modify the wvdial.conf to update the following

    4. username , password, and phone number . For TATA Indicom modem the values are internet,internet and #777 respectively (please look at manual)
  4. Type wvdial

    5. This will take the config file from default location (/etc/wvdial.conf ) . Otherwise you specify the path with -C switch.

    Now the connection would have started if signal is available. If everything is ready it will display default route OK.

  5. To disconnect press Ctrl+c in the terminal where wvdial was started.

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