resolution wont go beyond 1024x780

doronkimchi · 04-22-2008, 04:17 PM

Hi
i have installed Ubuntu 8.04 Beta on my IBM T-60 with Intel 945gm chipset.
Where can i find a driver that can help me increase the resolution beyond 1024x780.

Doron

elliott678 · 04-22-2008, 04:34 PM

Would this be a widescreen laptop?

The Intel driver that ships with Ubuntu shouldn't have a problem.

doronkimchi · 04-22-2008, 04:37 PM

Quote:

Originally Posted by elliott678

Would this be a widescreen laptop?

The Intel driver that ships with Ubuntu shouldn't have a problem.

no, it is 15' 4:3.

elliott678 · 04-22-2008, 04:39 PM

You are sure it is capable of a higher resolution, right? That could have came with a 1024x768 15" screen.

http://www.thinkwiki.org/wiki/Category:T60

lukost · 04-22-2008, 04:43 PM

Hi! Which driver do you use now? Probably "i810" while "intel" would be much better for you. Just check your /etc/X11/xorg.conf for section 'Driver' and try changing "i810" to "intel". The intel driver autodetects available resolutions. If this doesn't help try adding the desired resolution into xorg.conf ("Screen" section).

The last thing worth trying is using xrandr extension. Xrandr would make it possible to use any resolution/rotate the screen or even use the second display. The bad news is that it works properly with 'intel' driver only (as for i945gm). First check your display name (call xrandr in terminal window). You should get output similar to this:
LVDS connected 1280x800+0+0 (normal left inverted right) 331mm x 207mm
1280x800 60.0*+ 60.0
1280x768 60.0
1024x768 60.0
800x600 60.3
640x480 59.9
It simply means that your output is named LVDS and supports the listed resolutions (mine is set to 1280x800). You can the change mode using:
xrandr --output LVDS --mode 1280x768

Note that you can change only to supported mode. For some reason the 'intel' driver seems to wrongly detect available resolutions. There are two ways to fix the glitch. None is perfect.

1) use xrandr and add the mode... This one is somewhat hardcore as you need to know what you are doing. The syntax is like this:

xrandr --output LVDS --newmode "1280x1024" 108.0 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync

Note the red numbers. They are not random and are highly specific to your display.

2) install 915resolution tool. It might help. So:
sudo apt-get install 915resolution
sudo reboot

As I have mentioned before - this may not work. If not - give some more information on the driver you use and post your xorg.conf.

As a last attempt you could generate the xorg.conf from beginning. Just remember to backup the old one...
sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.old
sudo dpkg-reconfigure -phigh xserver-xorg

then switch to the X console and press ctrl+alt+backspace (to restart X - logging out won't help)

Cheers,
lukost

doronkimchi · 04-22-2008, 04:46 PM

Quote:

Originally Posted by elliott678

You are sure it is capable of a higher resolution, right? That could have came with a 1024x768 15" screen.

http://www.thinkwiki.org/wiki/Category:T60

I got the laptop from my work place.
how can i find the max resolution of my laptop ?

elliott678 · 04-22-2008, 04:47 PM

Quote:

Originally Posted by lukost

Note that you can change only to supported mode. For some reason the 'intel' driver seems to wrongly detect available resolutions. There are two ways to fix the glitch. None is perfect.

That happens when the correct modes aren't defined in the chipset's VBIOS, Windows doesn't pay attention to that, so the hardware guys got lazy. The driver detects them just fine, it is just being told the wrong information.

Quote:

Originally Posted by doronkimchi

I got the laptop from my work place.
how can i find the max resolution of my laptop ?

You could try checking the BIOS, they usually have the model number of the LCD in there, then you can search for the specifications of that.

doronkimchi · 04-22-2008, 04:50 PM

Quote:

Originally Posted by lukost

Hi! Which driver do you use now? Probably "i810" while "intel" would be much better for you. Just check your /etc/X11/xorg.conf for section 'Driver' and try changing "i810" to "intel". The intel driver autodetects available resolutions. If this doesn't help try adding the desired resolution into xorg.conf ("Screen" section).

The last thing worth trying is using xrandr extension. Xrandr would make it possible for using any resolution/rotate the screen or even use the second display. The bad news is that it works properly with 'intel' driver only. First check for your display name (call xrandr in terminal window). You should get output similar to this:
LVDS connected 1280x800+0+0 (normal left inverted right) 331mm x 207mm
1280x800 60.0*+ 60.0
1280x768 60.0
1024x768 60.0
800x600 60.3
640x480 59.9
It simply means, that your output is named LVDS and supports listed resolutions (mine is set to 1280x800). You can change mode using:
xrandr --output LVDS --mode 1280x768

Note that you can change only to supported mode. For some reason the 'intel' driver seems to wrongly detect available resolutions. There are two ways to fix the glitch. None is perfect.

1) use xrandr and add the mode... This one is somewhat hardcore as you need to know what you are doing. The syntax is like this:

xrandr --output LVDS --newmode "1280x1024" 108.0 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync

Note the red numbers. They are not random and are highly specific to your display.

2) install 915resolution tool. It might help. So:
sudo apt-get install 915resolution
sudo reboot

As I have mentioned before - this may not work. If not - give me some more information on the driver you use and post me your xorg.conf. I'll try to help.

As a last attempt you could generate the xorg.conf from beginning. Just remember to backup the old one...
sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.old
sudo dpkg-reconfigure -phigh xserver-xorg

then switch to the X console and press ctrl+alt+backspace (to restart X - logging out won't help)

Cheers,
lukost

Thank you, I will try to apply your solutions.