My T40 has the XGA display (1024x768), and I have noticed that the upper left hand corner pixel (0,0) never displays anything.
At first, I thought the pixel might be dead, but I ran the following experiment:
(1) I set the screen NOT to expand at a lower resolution. This means if I told the display to run in 800x600 mode, it would only use an 800x600 portion in the center of the screen (rest of screen is black band).
(2) I set the resolution to 800x600. And Guess what? The pixel in the upper left corner of the displayed area is not shown!
IBM support staff claim not to know what is going on.
Illustration:
+ = pixel where image is displayed, * = no image displayed, - = sidebands
*++++++
+++++++
+++++++
+++++++
+++++++
when the screen is runing in full mode, it doesn't display at (0,0)
------------
-*++++--
-+++++--
-+++++--
------------
when the screen is running at a lower res, but set NOT to expand, the (0,0) pixel still isn't displayed (left black). I know this pixel isn't dead because in full mode it is working...
At first, I thought the pixel might be dead, but I ran the following experiment:
(1) I set the screen NOT to expand at a lower resolution. This means if I told the display to run in 800x600 mode, it would only use an 800x600 portion in the center of the screen (rest of screen is black band).
(2) I set the resolution to 800x600. And Guess what? The pixel in the upper left corner of the displayed area is not shown!
IBM support staff claim not to know what is going on.
Illustration:
+ = pixel where image is displayed, * = no image displayed, - = sidebands
*++++++
+++++++
+++++++
+++++++
+++++++
when the screen is runing in full mode, it doesn't display at (0,0)
------------
-*++++--
-+++++--
-+++++--
------------
when the screen is running at a lower res, but set NOT to expand, the (0,0) pixel still isn't displayed (left black). I know this pixel isn't dead because in full mode it is working...