Solving video resolution problems on Boot
Translated by Nelson.G.Silveira - BR
14/04/07

 


 

Solving video resolution problems on Boot

If you're experiencing troubles when booting your DL LiveCD, or difficulties in getting the proper resolution/correct
driver try following the next procedures:


1) Boot the LiveCd and select VESA MODE on the first screen. Hit Enter and wait. If the system reboots before opening the graphical environment try again the previous procedure on the first screen and, on the command line, where you read: xmodule=vesa, replace fbdev for vesa:xmodule=fbdev

Hit Enter and wait the system start up in graphics mode. Complete your installation.

2) After having installed DL, rebooted it to start via HDD and enabled sudo the first time the system came up,
type in Terminal:

sudo dpkg-reconfigure xserver-xorg

NOTE: From the Multimedia 2.2 GL RC3 release Dreamlinux adds a new resource
( Video Settings ),
incorporated to DCP ( Dreamlinux Control Panel ), to facilitate the invoke
"dpkg-reconfigure xserver-xorg".

This resource works after HDD installation.


In this very moment you shall provide information about your video card and monitor.





On the first screen, look for the video driver that corresponds to your video card.

We have tested the drivers i810 ( Intel ), nv ( Nvidia ) and Ati ( radeon ).

Click on Forward and proceed responding to the questions with the default values.
It's not necessary to fill up the blank fields. On the field "Emulate 3 Buttons", if it's marked, clear the
mark if you have a three buttons mouse.

When asked "Write Default Files section to configuration file?", answer yes. Now you'll be asked about your monitor type.




Enable "Attempt monitor autodetection?" and carry on. Select the desired resolution.
When asked "Method for selecting the monitor characteristics", click on "Simple".

Select your monitor's size: 15, 17, etc. Proceed.





Eventually accept the default value when asked "Desired default color depth".

Restart your computer or type in the Terminal:

sudo /etc/init.d/gdm stop and then, as user root (su) /etc/init.d/gdm start.

Note to whoever have the intel video card:
using the above procedures we succeeded in obtaining 3D acceleration with the i810 ( Inte l) driver.


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Making the modifications BEFORE INSTALLING, through CD:

You can try to change the video driver even while you're running through CD.

To do that, after following the steps above, do this:

1) On the terminal, type: sudo passwd morph
2) Put in a password and repeat it
3) Also on the same terminal, type: sudo init 3

The graphical environment will be closed and you'll go to the text mode, where the system asks, on the command line,
the user's name.

Type: morph

Finally type, also on the command line: sudo /etc/init.d/gdm restart

The graphical environment will be reopened and you can log yourself using user 'morph' and its password.

Note: if your video card supports 3D acceleration with free drivers (as the Intel cards),
type to test them: glxgears, or Alt+1 to enable the 3DDesktop.

IMPORTANT: The changes made to the video driver during a LiveCD session will remain after installing the system.




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