[GRLUG] screen problem (continued from November)

[John Wesorick]

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).

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Sent from my Android phone, please forgive my brevity
On Feb 15, 2011 10:23 AM, "Eric Beversluis" <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> 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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