[ltp] thinkpad 760xl + X Windows

James Mckenzie linux-thinkpad@www.bm-soft.com
Mon, 07 Aug 2000 19:56:27 -0700


goatboy@chemicalwarfare.net wrote:
> 
>         Greetings.
> 
>         Yesterday i procured a thinkpad 760xl and installed Slackware 7.1
> on it. All was well until i thought "hrmm, i can probably run gnome or
> something on this." Needless to prattle on, for some reason, when i fire
> up X (via either startx or the 4th runlevel), it will black out the
> screen. The weirdness continues in that i threw on an external monitor
> and it showed up on the monitor, working perfectly. 

Looks like you do not have the correct timing settings.  You did not
specify which LCD you have, but the 'secret' is to select a monitor with
60hz timing.  I used a NEC LCD 300 HiRes as it had a 60hz timing
setting.  If I choose a higher speed refresh, I was greeted with a
'black' screen.  Most monitors support at least 75Hz refresh and will
display just fine.  

>I disconnected the
> monitor, killed X, restarted, and tried fn + f7. This was a tip that i
> read on a linux for thinkpad website. well, it didn't bloody
> work. Following this, i installed tpctl and tried to turn off CRT and such
> things, but the same occurs. I plead for any help that you can lend to me,

The Fn+F7 'trick' works if you have no output to the screen, but can
drive a monitor.  Try connecting the monitor again, and press Fn+F7
until the monitor is 'blank' and then see what the LCD screen displays. 
If there is no display, you have the refresh rate set too high.

James Mckenzie
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