Pete Zahut wrote:
> Paul wrote:
>> Pete Zahut wrote:
>>> PS, just flashed BIOS from V2.90 to 3.60 and VGA BIOS from Intel
>>> V1264 to V1377 - but no different.
>>>
>> If you run the monitor info program here, without the external monitor
>> connected, and with just the internal LCD panel, does it say the
>> panel is 1280 x 800 ? An EDID might be a way for the laptop
>> manufacturer, to provide plug and play info about the panel,
>> its native size and resolutions. Not having an EDID on some
>> I2C bus, is not the end of the world, and is not a defect.
>>
>> http://www.entechtaiwan.com/util/moninfo.shtm
>
> Right Paul, we're getting into major stuff that I know nothing about here
> mate :o)
>
> Having run the moninfo program you mention above, there seems to be varying
> info (mentions Philips, NEC, Microsoft - can't all have manufactured it can
> they?) so I'll apologise now for making this post so long but I thought
> you'd need all the info. Here's a "cut and paste" from that program:
>
<<snip>>

> &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& &&&&&&&&&&
>
> LPL0000 (registry)
>
> Monitor
> Windows description...... Plug and Play Monitor
> Manufacturer............. LPL
> Plug and Play ID......... LPL0000
> Data string.............. LGPhilipsLCD LP154W01-TLA1

> Screen size.............. 330 x 210 mm (15.4 in)
> Preferred timing......... Yes
> Native/preferred timing.. 1280x800p at 60Hz
> Modeline............... "1280x800" 71.250 1280 1328 1360 1440 800 802
> 808 823 -hsync -vsync
>
>
> Thanks again for your time mate,
>
> Pete
>

The second entry (LPL0000) looks like the info for
the panel (LGPhilipsLCD LP154W01-TLA1 15.4") and it
looks OK, because it is 1280 x 800. So that doesn't explain
it.

Paul

On Mon, 27 Apr 2009 10:01:00 -0500, "BillW50"
<BillW50@aol.kom> wrote:

>In news:k19av4h8t3l8r8vddlkfbe5qltj1du9j2u@4ax.com,
>kony typed on Sun, 26 Apr 2009 23:21:01 -0400:
>> On Sun, 26 Apr 2009 09:44:06 -0500, "BillW50"
>> <BillW50@aol.kom> wrote:
>>
>>> In news:U9PIl.87027$GU6.14111@newsfe09.iad,
>>> Barry Watzman typed on Sat, 25 Apr 2009 21:55:00 -0400:
>>>> Re: "Well after the external video jack (which is analog video), it
>>>> gets converted to digital and fed to the LCD display."
>>>>
>>>> This is a driver issue, but that explanation of how things work is
>>>> wrong (although irrelevant to the issue). The digital video is
>>>> produced natively. The analog video is then produced from that.
>>>> Not the other way around.
>>>
>>> But Pete (the OP), also stated on the 23rd that he booted up with :
>>> "TuffTest Pro (http://www.tufftest.com/ttp01.htm) that is
>>> self-booting, operating system independent and never goes anywhere
>>> near Windows". So how can it be a Windows driver issue if the
>>> problem still exists without Windows?
>>
>> Becaues the display adapter isn't stretching non-native
>> resolutions to fill the entirety of the screen, instead it
>> is keeping the correct aspect ratio and upsampling.
>>
>>> And it is converted to digital, to analog, and back partially into
>>> digital (a mix of the two). Same thing happens when you plug into an
>>> external LCD monitor as well. As the pixels live in a digital matrix,
>>> while the contrast is controlled by analog means.
>>
>> It is not converted to analog and then back to digital. It
>> starts digital and stays digital to output to the LCD panel
>> built in, or is converted to analog for the output to an
>> external monitor.
>
>Are you saying the brightness and contrast (also gray scales) are
>adjusted digitally? How can that be? As it is an analog voltage that
>controls this on every pixel on a LCD screen.

The distinction I was making was the output from the display
adapter, since we were trying to point the finger at one
subsystem or another.

There should be a digital input to the panel driver board,
which is separate from the display adapter as it is mated to
the panel it comes with. Display adapter typically uses
LVDS signals to transmit absolute digital values including
greyscales, then the integral laptop brightness and contrast
controls (if using buttons rather than software settings
which would instead alter the display adapter digitized
value it outputs) would effect the panel board. Between the
panel board and the panel itself, at the last stage I
suppose that may be analog but what are we considering the
significance of that to be in pinpointing the problem the OP
is seeing?

Active matrix LCD panels do not have a "contrast" adjustment. They only
have a brightness adjustment (and, sometimes, not even that). Only
older DSTN displays (no longer made for laptops) had a "contrast"
adjustment.


BillW50 wrote:

>
> Are you saying the brightness and contrast (also gray scales) are
> adjusted digitally? How can that be? As it is an analog voltage that
> controls this on every pixel on a LCD screen.
>

I don't believe that it is either the cable or the panel (in the sense
that the panel is truly defective).

This is not a case where part of the panel is dark in the sense that
part of the image is missing; rather, this is a case where the entire
image is present but it's not filling the entire screen. That does not
suggest either cable or, in the sense that it's defective, the panel
itself either. Rather, it suggests some kind of configuration or
software (BIOS, DMI or ACPI) configuration problem.

Fixer wrote:
> For christs sake stop trying to reinvent the wheel. The problem has been
> solved he has the answer, its the panel or cable he knows what it is stop
> confusing the guy
>
>
>
>
> "Barry Watzman" <WatzmanNOSPAM@neo.rr.com> wrote in message
> news:CCiJl.56835$g%5.28803@newsfe23.iad...
>> Well, I take back what I said about it being a driver issue. It's clearly
>> a hardware issue. Any chance that it was flashed with the wrong bios or
>> that someone changed the LCD panel?
>>
>>
>> Pete Zahut wrote:
>>> Barry Watzman wrote:
>>>> Can you post a screen shot of what the BIOS looks like?
>>> Photo of BIOS screen here:
>>>
>>> http://s137.photobucket.com/albums/q...=lappyBIOS.jpg
>>>
>>>> Is there any chance that at some point someone replaced the LCD panel
>>>> with a different model?
>>> Just asked my niece and she said no, it's never had a replacement LCD
>>> panel.
>>>
>>> Pete.
>>>
>>>> Pete Zahut wrote:
>>>>> Thanks Fixer. The problem is still there when looking in the BIOS
>>>>> and even when running a Linux LiveCD so it's not a Windows driver
>>>>> issue. The problem is *NOT* there when viewing on an external
>>>>> monitor, so thanks to your suggestions I'll try a new screen cable
>>>>> first as that's the cheapest :o) Thanks mate,
>>>>>
>>>>> Pete
>

In news:xtDJl.109020$e_5.57841@newsfe03.iad,
Barry Watzman typed on Tue, 28 Apr 2009 09:25:42 -0400:
> Active matrix LCD panels do not have a "contrast" adjustment. They
> only have a brightness adjustment (and, sometimes, not even that).
> Only older DSTN displays (no longer made for laptops) had a "contrast"
> adjustment.

Whether you know there are there or not, the driver still adjusts the
contrast. My external monitor has a contrast adjustment. In my laptops
it is controlled by the driver adjustments. For example, this EeePC...
the contrast is set at 50% (through the Intel Graphics Media Accelerator
Driver for Mobile). And I can adjust it between 40% to 100% through the
driver.

--
Bill
Asus EEE PC 701G4 ~ 2GB RAM ~ 16GB-SDHC
Windows XP SP2

Re: "My external monitor has a contrast adjustment."

Your external monitor has a contrast adjustment only becuase it has an
analog input (VGA input). If you use a digital input (DVI), the
contrast adjustment has no effect on the picture. it is there only for
the analog input, it's part of the A-to-D conversion circuitry. This
circuitry does not exist in a laptop and a laptop with a TFT (active
matrix) display has no contrast adjustment anywhere ... not in hardware,
not in software (the driver).


BillW50 wrote:
> In news:xtDJl.109020$e_5.57841@newsfe03.iad,
> Barry Watzman typed on Tue, 28 Apr 2009 09:25:42 -0400:
>> Active matrix LCD panels do not have a "contrast" adjustment. They
>> only have a brightness adjustment (and, sometimes, not even that).
>> Only older DSTN displays (no longer made for laptops) had a "contrast"
>> adjustment.
>
> Whether you know there are there or not, the driver still adjusts the
> contrast. My external monitor has a contrast adjustment. In my laptops
> it is controlled by the driver adjustments. For example, this EeePC...
> the contrast is set at 50% (through the Intel Graphics Media Accelerator
> Driver for Mobile). And I can adjust it between 40% to 100% through the
> driver.
>

In news:aCFJl.79706$LA7.40467@newsfe20.iad,
Barry Watzman typed on Tue, 28 Apr 2009 11:51:27 -0400:
> Re: "My external monitor has a contrast adjustment."
>
> Your external monitor has a contrast adjustment only becuase it has an
> analog input (VGA input). If you use a digital input (DVI), the
> contrast adjustment has no effect on the picture. it is there only
> for the analog input, it's part of the A-to-D conversion circuitry.
> This circuitry does not exist in a laptop and a laptop with a TFT
> (active matrix) display has no contrast adjustment anywhere ... not
> in hardware, not in software (the driver).
>
>
> BillW50 wrote:
>> In news:xtDJl.109020$e_5.57841@newsfe03.iad,
>> Barry Watzman typed on Tue, 28 Apr 2009 09:25:42 -0400:
>>> Active matrix LCD panels do not have a "contrast" adjustment. They
>>> only have a brightness adjustment (and, sometimes, not even that).
>>> Only older DSTN displays (no longer made for laptops) had a
>>> "contrast" adjustment.
>>
>> Whether you know there are there or not, the driver still adjusts the
>> contrast. My external monitor has a contrast adjustment. In my
>> laptops it is controlled by the driver adjustments. For example,
>> this EeePC... the contrast is set at 50% (through the Intel Graphics
>> Media Accelerator Driver for Mobile). And I can adjust it between
>> 40% to 100% through the driver.

Well I think you are not thinking. But on the slim chance your universe
is different than mine. Here is where you change the contrast on my
EeePC 702.

http://img183.imageshack.us/img183/2...0428111323.gif

Same is true under any Intel CPU based system. If you system doesn't
allow for this, I believe Windows Display Driver Color Management
profile can adjust the contrast as well.

--
Bill
Asus EEE PC 701G4 ~ 2GB RAM ~ 16GB-SDHC
Windows XP SP2

On Tue, 28 Apr 2009 11:51:27 -0400, Barry Watzman
<WatzmanNOSPAM@neo.rr.com> wrote:

>Re: "My external monitor has a contrast adjustment."
>
>Your external monitor has a contrast adjustment only becuase it has an
>analog input (VGA input). If you use a digital input (DVI), the
>contrast adjustment has no effect on the picture. it is there only for
>the analog input, it's part of the A-to-D conversion circuitry. This
>circuitry does not exist in a laptop and a laptop with a TFT (active
>matrix) display has no contrast adjustment anywhere ... not in hardware,
>not in software (the driver).


Most full featured video drivers do now have a contrast
adjustment, but it directly changes the digital output
values, not an analog voltage change telling the LCD panel
to do anything different than represent the digital values
the display adapter sends.

Fixer wrote:
> "Pete Zahut" <dont@bother> wrote in message
> news:9qidnbzMK-EsA2zUnZ2dnUVZ8vSdnZ2d@bt.com...
>> Paul wrote:
>>> Pete Zahut wrote:
>>>> Got the above laptop and it's just developed a problem with the
>>>> screen/display - there's a 65mm column at the right-hand side of
>>>> the display that's gone dark. Applications open up properly and
>>>> you can see the whole width of the app, but it doesn't go the
>>>> whole width of the screen - sort of full display but not full
>>>> screen if you see what I mean. Also, don't know if it's relevant
>>>> or not but the taskbar at the bottom seems to be twice as tall as
>>>> normal and isn't drag-able back to it's usual size - cursor also
>>>> distorts in this area. I'm not explaining it very well, so have a
>>>> look at this photo:
>>>> http://s137.photobucket.com/albums/q...nt=laptop1.jpg
>>>>
>>>> At first I thought it may be a display driver issue but I've
>>>> uninstalled and reinstalled without success. I've also used a
>>>> program called #1-TuffTest Pro (http://www.tufftest.com/ttp01.htm)
>>>> that is self-booting, operating system independent and never goes
>>>> anywhere near Windows, but shows the same results, so I would say
>>>> that that rules out any Windows driver issues. Picture of that test
>>>> here:
>>>> http://s137.photobucket.com/albums/q...nt=laptop2.jpg
>>>>
>>>> Any ideas what's wrong and how to fix it?
>>>>
>>>> TIA,
>>>>
>>>> Pete
>>>
>>> Have you done a graphics driver update recently ?
>>
>> No - uninstalled and reinstalled driver to try to fix the problem,
>> but not updated.
>>
>>> It looks like a mismatch, between the actual LCD panel,
>>> and what the software thinks it is driving.
>>>
>>> Paul
>>
>> Yeah, I'd agree with you there Paul - except for the fact that I've
>> even used the Recovery CD/Partition to restore the laptop to the
>> state it was in when it left the factory and the display is still
>> faulty even then.
>
>
> Ok the way to tell if its hardware or software causing the problem
> is when the machine starts to boot drop into the BIOS whatever it is
> for your laptop, F2 for Dells , Del for some others but anyway
> whatever it is for your machine. If the problem is there in when you
> look in the BIOS its the LCD panel or Cable or Motherboard port. IF
> it's not there then it's a driver/application, error. Of course you
> could also connect it to an external monitor and again if its there
> then its the grapghics card or motherboard port or software/drivers
> and if its not there then it's the LCD or cable

Fixer, I owe you a pint - a £12GBP secondhand LCD cable from Ebay sorted the
problem. Thanks very much mate, and to all who took the time to try and help
:o)

Pete

"Pete Zahut" <dont@bother> wrote in
news:f6ydneNw36CLwmHUnZ2dnUVZ8j-dnZ2d@bt.com:

> Fixer, I owe you a pint - a œ12GBP secondhand LCD cable from Ebay
> sorted the problem. Thanks very much mate, and to all who took the
> time to try and help
>:o)
>
> Pete
>

Don't you just love the look on the other people's faces around you when
you've troubleshot some complex problem successfully on the other side of
the planet by remote control?......(c;]



I fixed a Russian TV set in Siberia for a guy who was stumped, from here in
South Carolina. One of my friends, here, was sitting in my little messy
computer room when the Skype call from Siberia came in thanking me for
fixing his TV.

The look on my friend's face was simply PRICELESS. He still thinks I'm
some kind of genius....hee hee...(c;]



--
-----
Larry
You can tell there's very intelligent life in the Universe
because none of them have ever tried to contact us.....

Larry wrote:
> "Pete Zahut" <dont@bother> wrote in
> news:f6ydneNw36CLwmHUnZ2dnUVZ8j-dnZ2d@bt.com:
>
>> Fixer, I owe you a pint - a o12GBP secondhand LCD cable from Ebay
>> sorted the problem. Thanks very much mate, and to all who took the
>> time to try and help
>>> o)
>>
>> Pete
>>
>
> Don't you just love the look on the other people's faces around you
> when you've troubleshot some complex problem successfully on the
> other side of the planet by remote control?......(c;]
>
>
>
> I fixed a Russian TV set in Siberia for a guy who was stumped, from
> here in South Carolina. One of my friends, here, was sitting in my
> little messy computer room when the Skype call from Siberia came in
> thanking me for fixing his TV.
>
> The look on my friend's face was simply PRICELESS. He still thinks
> I'm some kind of genius....hee hee...(c;]

Yeah, it truly is the spirit of USENET and the internet and it gives you a
warm fuzzy feeling knowing that you've helped someone. This particular
problem was well beyond me (never messed with laptops before) but in general
I'm not so bad with computers and I use PCHelpware to remotely access
friends and family member's computers when they need help.

One particular friend believes I'm in league with Satan and should be burned
at the stake as he sits there, 200 miles away, watching me move his cursor
and doing what needs to be done :o)

"Pete Zahut" <dont@bother> wrote in
news:mbGdnRyt9I8nx2DUnZ2dnUVZ8sSdnZ2d@bt.com:

> One particular friend believes I'm in league with Satan and should be
> burned at the stake as he sits there, 200 miles away, watching me move
> his cursor and doing what needs to be done :o)
>
>
>

I run my boxes remotely from my little N800 Linux tablet using rdesktop to
WinXP's Remote Desktop quite a bit. The Winbox is always online, so why
not let it do all the heavy lifting and storage then access just one email
client, for example, instead of all this multiple email clients and the
troubles associated with "syncing" the remote computer to the main
computers. Because the tablet's rdesktop requires a separate keyboard, or
use the crappy virtual keyboard on the WinXP box over the net, I use a
rollup rubber keyboard stored in the car if I need it to type something.

Works great for me. No syncing, less wasted space on the remote box....you
just can hear the audio and the link's not near fast enough for any videos.

"Let me check that email from 1998 on my main computer.", I say popping up
the main email on the little tablet way off somewhere. They always look so
astonished I have such remote access. They really need to learn how to USE
Windows or Linux past the basic web browser and desktop....



--
-----
Larry
You can tell there's very intelligent life in the Universe
because none of them have ever tried to contact us.....

Pete,

Having the same issue here with exactly the same laptop, and also tried opening it for inspection earlier.
Could you tell me how you opened and replace the LCD cable ?

Thanks,
Jan Bernard

jbcmarsman wrote:
> Pete,
>
> Having the same issue here with exactly the same laptop, and also
> tried opening it for inspection earlier.
> Could you tell me how you opened and replace the LCD cable ?
>
> Thanks,
> Jan Bernard

Sorry about the late reply Jan Bernard, been away for a few days.
Instructions emailed to you.

Pete

Hi Pete,

I've got exactly the same fault with my beloved 5920g as you had... one
day the screen just seemed to be squeezed into part of the TFT. All of the
desktop is displayed but a fair portion of the screen is black down one
side. I was massively relieved to see you had found a solution, but having
looked for a cable in the UK and failed... I'm starting to lose hope.

Any suggestions for where I can track one down, and what the procedure is
to replace it?

Cheers,

Mark.

Pete Zahut wrote:

> Fixer wrote:
>> "Pete Zahut" <dont@bother> wrote in message
>> news:9qidnbzMK-EsA2zUnZ2dnUVZ8vSdnZ2d@bt.com...
>>> Paul wrote:
>>>> Pete Zahut wrote:
>>>>> Got the above laptop and it's just developed a problem
>>>>> with the
>>>>> screen/display - there's a 65mm column at the
>>>>> right-hand side of
>>>>> the display that's gone dark. Applications open up
>>>>> properly and
>>>>> you can see the whole width of the app, but it doesn't
>>>>> go the
>>>>> whole width of the screen - sort of full display but
>>>>> not full
>>>>> screen if you see what I mean. Also, don't know if
>>>>> it's relevant
>>>>> or not but the taskbar at the bottom seems to be twice
>>>>> as tall as
>>>>> normal and isn't drag-able back to it's usual size -
>>>>> cursor also
>>>>> distorts in this area. I'm not explaining it very
>>>>> well, so have a
>>>>> look at this photo:
>>>>>
>>>>>
http://s137.photobucket.com/albums/q...nt=laptop1.jpg
>>>>>
>>>>> At first I thought it may be a display driver issue
>>>>> but I've
>>>>> uninstalled and reinstalled without success. I've also
>>>>> used a
>>>>> program called #1-TuffTest Pro
>>>>> (http://www.tufftest.com/ttp01.htm)
>>>>> that is self-booting, operating system independent and
>>>>> never goes
>>>>> anywhere near Windows, but shows the same results, so
>>>>> I would say
>>>>> that that rules out any Windows driver issues. Picture
>>>>> of that test
>>>>> here:
>>>>>
>>>>>
http://s137.photobucket.com/albums/q...nt=laptop2.jpg
>>>>>
>>>>> Any ideas what's wrong and how to fix it?
>>>>>
>>>>> TIA,
>>>>>
>>>>> Pete
>>>>
>>>> Have you done a graphics driver update recently ?
>>>
>>> No - uninstalled and reinstalled driver to try to fix the
>>> problem,
>>> but not updated.
>>>
>>>> It looks like a mismatch, between the actual LCD panel,
>>>> and what the software thinks it is driving.
>>>>
>>>> Paul
>>>
>>> Yeah, I'd agree with you there Paul - except for the fact that
>>> I've
>>> even used the Recovery CD/Partition to restore the laptop to
>>> the
>>> state it was in when it left the factory and the display is
>>> still
>>> faulty even then.
>>
>>
>> Ok the way to tell if its hardware or software causing the
>> problem
>> is when the machine starts to boot drop into the BIOS whatever it
>> is
>> for your laptop, F2 for Dells , Del for some others but anyway
>> whatever it is for your machine. If the problem is there in when
>> you
>> look in the BIOS its the LCD panel or Cable or Motherboard port.
>> IF
>> it's not there then it's a driver/application, error. Of course
>> you
>> could also connect it to an external monitor and again if its
>> there
>> then its the grapghics card or motherboard port or
>> software/drivers
>> and if its not there then it's the LCD or cable

> Fixer, I owe you a pint - a £12GBP secondhand LCD cable from Ebay
> sorted the
> problem. Thanks very much mate, and to all who took the time to try and
> help
> :o)

> Pete




--





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