Re: Re[2]: [Thinkpad] Thinkpad A31p Screen Corruption - an update

In message <513A882C4B95574FB9575CEBCC0787CEFE7CFB@bulldog.uhc.cc>, "Greg Langh
am" writes:
>Along those lines, the A3x line does not co-exist with a second video
>card in the docking station (at least with several cards I tested.) Same
>card and same dock work fine with an A2x series. I agree there are some
>video subsystem design issues on the A3x series.

Hmm.

Mine's gotten a lot worse.

Notes:

1. If this happens in text mode, it affects the font rendering. So, for
instance, every letter 'o' on the screen will get a little dot in the middle
of the 'o'. If you push a corner of the laptop, or lift the laptop a bit,
this will go away from all of them at once.
2. I can't make it happen on CRT, but I may just not have tried enough yet.
3. There is no "permanent" corruption in graphics mode. If you do whatever
it is (lift one corner a bit, or lift the front left corner and push down a
bit on the front right) that makes it go away, everything becomes correct
again.

The second seems to point to the LCD cable. The third seems to point very
strongly towards something near the DAC or whatever; if video memory were
actually being corrupted, it would stay corrupted even once the problem
was fixed; it would need to be redrawn to recover. The first, however,
happens in a curious place, because the font rendering part of the graphics
subsystem... Well, I always thought that was rendering *to* video memory, so
there's something screwed up there too.

Anyway, I'm gonna see if it keeps getting worse, but pretty soon I'll want to
call IBM and ask them to swap parts until it gets better.

Annoying, this. I'm now officially glad I sprung for the 3-year extended
warranty, because this had BETTER be covered, but I'm at a year and four
months. :)

-s
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Received on Mon Feb 9 00:09:18 2004