Re: [9fans] 00E & projector

[Sam <sah@softcardsystems.com>]

The TP600E, like many laptops, has 3 modes for
display: lcd, lcd+external, and external.

I can hook up the laptop to the projector
and get a wall display - which is much farther
than I thought I'd get off the bat - but when
I toggle back to lcd display, the screen
goes an eggshell white and I lose the display
until reboot.  I see little diagonal dots
corresponding to the mouse which move about
on mouse motion.  Toggling back to external
just exports this lovely display to the wall.

Tips?

Cheers,

Sam

On Sat, 1 Feb 2003, Ronald G. Minnich wrote:

> On Sat, 1 Feb 2003, Russ Cox wrote:
>
> > Are you running your screen at a higher resolution
> > than the projector supports?  That's what it sounds
> > like.  It's also possible we screwed up the CRT
> > code -- it doesn't get exercised much -- but usually
> > if you Fn-F7 to get it working before aux/vga,
> > it keeps working.
>
> Another common problem when you go to graphics mode on older thinkpads --
> there is a "feature" that doesn't work with all projectors in which the
> thinkpad hardware tries to autodetect external vga, and won't drive it
> unless it detects it. Well, guess what, it didn't always work, as I found
> at one conference where I went through three projectors and had to give up
> and "talk to my slides" while the audience watched a blank screen for 45
> minutes. I doubt more than 75% of them fell asleep, but I'm an optimist --
> oh, no, wait, I'm not.
>
> There was a linux utility to fix this on the 570, and I wonder if the same
> problem exists on the 600. The linux utility just jammed some random magic
> hardware bit and all was well (disabled the hardware mis-feature).
> So it can look like a resolution problem but actually be something else.
> Best bet is try 640x480 first, and if that doesn't fix it, then the
> problem is something else.
>
> ron
>