[ltp] Strange LCD issue

[Petr Praus]

What's the GPU temperature difference when placed on the table and on the book?
In my opinion, this issue might be caused by overheated GPU rather
than broken LCD display.

Peter

On 12/31/07, Jim Rockford <jim.rockford1@gmail.com> wrote:
>
> I have been experiencing some ugly LCD flicker and blinking kaleidoscopes on
> my T41p screen, a problem that gets progressively worse the longer
> the machine as on (which I presume means that the hotter the machine gets
> the worse the problem is).  However, today I made a puzzling observation.
> When I have my Thinkpad placed on my desk, the flicker occurs as usual (and
> it's at its worst when I browse the web and encounter flash-intensive
> websites).
> However, if I place the laptop on a book, raising it in the air above my
> desk by 3 or 4 inches, then the flicker is almost completely absent, and it
> remains that way.  I should note that if I tilt the computer a little then
> the flickering behavior can return.  However, if it sits level on this book
> (which does not encompass the
> entire underneath surface area of the machine), then the LCD has no
> problems.  If I put it back directly on the desk, then the problems occur in
> a 100% reproducible way.
>
> Can anyone explain this?  Is it a matter of the machine needing to "breathe"
> or something?  Why does tilting the machine exaggerate the LCD flickerings?
>
> Thanks,
> Jim
>
>
>