[GRLUG] screen problem (continued from November)

[Eric Beversluis]

On 2/15/2011 10:30 AM, John Wesorick wrote:
>
> I'm no expert, but it sounds to me like a bulb problem. A burned out 
> lamp will work for a couple minutes, then turn off, but since it is 
> only the backlight, you can still faintly see the image. I've seen it 
> a few times in monitors/TVs. Also, if you wanted, I have an external 
> floppy drive you could borrow (Jenison).
>
> ----------------------------------------------------------------------------
>
> Sent from my Android phone, please forgive my brevity
>
> On Feb 15, 2011 10:23 AM, "Eric Beversluis" 
> <ebever at researchintegration.org 
> <mailto:ebever at researchintegration.org>> wrote:
> > On 2/15/2011 9:15 AM, Michael Mol wrote:
> >> On Tue, Feb 15, 2011 at 2:29 AM, Eric Beversluis
> >> <ebever at researchintegration.org 
> <mailto:ebever at researchintegration.org>> wrote:
> >>> On Thu, 2010-11-25 at 08:22 -0500, Eric Beversluis wrote:
> >>> Just today the screen popped back on after not working for several
> >>> weeks. During that time, there would occasionally be a flicker of life
> >>> in the screen (typically the Lenovo splash screen showing just for a
> >>> second or so); there seems always to be a very faint image (eg, I can
> >>> just make out the form of the logon screen and once I log in I can
> >>> ever-so-faintly make out the Desktop).
> >>>
> >>> What happened just before screen popped on: I had been running an NX
> >>> session as usual. From terminal in NX I did 'sudo init 0'. Then before
> >>> the Lenovo had completely shut down I removed the power cable to 
> use it
> >>> on another box. Just as the shutdown completed I saw 
> ever-so-briefly the
> >>> Ubuntu logo. When I rebooted after a couple of hrs (without the power
> >>> cable), the screen worked perfectly. Plugging the power cable in 
> after a
> >>> bit did not affect screen operation.
> >>>
> >>> Experiment: hibernate and restart. Result: screen came back fine. But,
> >>> based on past experience, I'm expecting it to go out again at any 
> time.
> >>>
> >>> Web research suggested that this kind of problem related to the screen
> >>> power inverter. After a frustrating month, I finally got a new 
> inverter
> >>> delivered and that did not make any difference.
> >>>
> >>> Lenovo 3000 N100.
> >>>
> >>> Thanks.
> >> Sounds like it might be an electrical or mechanical problem. Outside
> >> the power inverter, I'd guess your cable might be flaky, or possibly
> >> the video controller. We've got similar problems with one of our
> >> laptops. Though our case is probably slightly different; if you leave
> >> it alone long enough, it looks like this:
> >>
> >> http://www.flickr.com/photos/28208534@N07/3767294627/
> > Right about electrical or mechanical, I'm thinking. Mine doesn't show
> > that much image when it's "out"--much fainter image.
> >
> > This morning it was "on" for about two or three minutes after startup
> > and logon and then went "out" again. When I shut it down remotely using
> > "sudo init 0" the screen came back on during the shutdown. Haven't
> > restarted since then. Does this suggest that it may be software?
> >
> > I'll probably bring it in to a repair shop; hopefully they'll have some
> > diagnostic equipment that can see what's happening. The Lenovo
> > supposedly has something called PC-Doctor built in, but (1) I don't 
> know
> > if it would work with a Linux install and (2) the instructions say to
> > create a set of floppy disks--but there's no floppy drive on the box 
> and
> > I'm not about to go out and buy an external one, from which they might
> > not boot anyway.
> >
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Thanks for the loan offer--I'm only occasionally in GR.
The screen ran fine for several hours last night, which doesn't sound 
like a bulb problem.

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