Acer Aspire 5630 Laptop screen/display problem
Pete Zahut
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/q235/darkdoo/?action=view¤t=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/q235/darkdoo/?action=view¤t=laptop2.jpg
Any ideas what's wrong and how to fix it?
TIA,
Pete
BillW50
Pete Zahut typed on Thu, 23 Apr 2009 20:42:46 +0100:
Hi Pete! Wow that is weird. An external monitor I can see this
happening. Internal monitor, I never saw this. Any chance you can hook
it up to an external? I suspect the same result. Although you may adjust
it to display correctly. In either case, I believe you have to take it
in for service. It is still under warrantee, right?
--
Bill
Asus EEE PC 701G4 ~ 2GB RAM ~ 16GB-SDHC
Windows XP SP2
Paul
Have you done a graphics driver update recently ?
It looks like a mismatch, between the actual LCD panel,
and what the software thinks it is driving.
Paul
Pete Zahut
I haven't as yet hooked it up to an external monitor, but will do later
today when I have chance, and let you know what I find. Unfortunately, it's
not in warranty so whatever it is, I'll have to pay for the repair if it's a
hardware fault :o(
Thanks Bill
Pete Zahut
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.
Pete Zahut
Bill (and anyone else who's interested, of course), further to the above
I've now hooked it up to an external monitor and the display on the external
monitor is perfect.
Photo at
http://s137.photobucket.com/albums/q235/darkdoo/?action=view¤t=laptop2a.jpg
Don't know what that means though :o(
Pete
BillW50
Pete Zahut typed on Sat, 25 Apr 2009 13:22:24 +0100:
Hi Pete! Well now we know. I doubt this laptop has a separate video card
and it is all on the motherboard. If somebody knows differently, please
let us know. Wait... I found a picture of the motherboard...
http://www.notebooksolutions.ca/zc/index.php?main_page=product_info&products_id=2775
Nope, it looks like it is on the motherboard to me. Well after the
external video jack (which is analog video), it gets converted to
digital and fed to the LCD display. So we are talking about the
motherboard, ribbon cable, and the LCD display itself. And I don't think
it could be the last two, but I could be wrong. So that is what I think
anyway.
Pete Zahut
Thanks for that Bill, looks like a very expensive repair that isn't really
worth it - not yet anyway.
Cheers my friend,
Pete
BillW50
Pete Zahut typed on Sat, 25 Apr 2009 16:01:12 +0100:
Hi Pete! Well another ribbon cable should be cheap enough to try. I
don't think it is that though. If it were me, I would find one on eBay
working or with some other problem. Best if the other problem wasn't
something wrong with the motherboard. That way you could swap parts
until you find out which one of the three it was. I really think it is
the motherboard though.
I don't know what you want to do with it. But if you are not interested
in it, I would sell it or something. As somebody can use it as is or
with an external monitor. Or even fix it. <grin>
Pete Zahut
Oh I'll keep it, it's quite useable as it is, just annoying :o)
BillW50
Pete Zahut typed on Sat, 25 Apr 2009 16:57:11 +0100:
Yup, that would be my choice too Pete. <grin>
Paul
When you bought the laptop, the panel may have been declared as "1440x900"
or the like. What does the control panel currently claim for the resolution
setting ? Do you see any "tearing" in the screen, as if there is resampling
of the image, in order to squish it into a smaller area on the screen ?
Do the resolution numbers add up ?
Another test you can try, is to boot a Linux LiveCD and do some testing
there. If the same weird effect is present, then the problem is hardware
(panel doing something it shouldn't). If the machine appears to work normally,
running something like Knoppix Linux, then that would suggest the driver
is doing something strange in Windows.
Paul
Sheldon
"Pete Zahut" <dont@bother> wrote in message
news:9qidnbzMK-EsA2zU...@bt.com...
Assuming it is a faulty video card, they usually throw the entire display
out of sync. I went nuts with my Acer the other day when I couldn't move
the mouse. Turned out to be an accidental function key hit that kept its
setting even when restarted and even held after using system recovery.
Barry Watzman
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."
That is a driver problem. As an example, if I move a hard drive from a
Toshiba 1415 to a 2415 (or vice-versa), I have seen the same problem.
Sometimes reinstalling the driver fixes it, sometimes I have to
reinstall WINDOWS. The 1415 and 2415 are substantially identical
computers but one has a Celeron and the other a full Pentium 4. No
explanation, but it's a driver issue (the resolution is set to an odd
[TRULY odd] value and cannot be reset to the correct value).
Barry Watzman
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.
BillW50
Barry Watzman typed on Sat, 25 Apr 2009 21:55:00 -0400:
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?
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.
--
Bill
Gateway MX6124 - Windows XP SP2
Fixer
"Pete Zahut" <dont@bother> wrote in message
news:9qidnbzMK-EsA2zU...@bt.com...
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
Pete Zahut
Actually the laptop belongs to my niece (or it did until recently when she
decided to get a new one and gave this one to me :o)) so I don't know what
it was declared as when new. When I look in Control Panel, there's a choice
of only two resolutions, 800x600 and 1024x768. There's a tick-box with the
words "Hide resolutions that this panel cannot display" (or something to
that effect) and there is currently a tick in that box. When I deselect that
choice, other resolutions become available, but selecting any of them makes
no change to the width of the display - that 65mm strip of "darkness" is
still there.
Do you see any "tearing" in the screen, as if
> there is resampling of the image, in order to squish it into a
> smaller area on the screen ?
No
> Do the resolution numbers add up ?
>
> Another test you can try, is to boot a Linux LiveCD and do some
> testing there. If the same weird effect is present, then the problem
> is hardware (panel doing something it shouldn't). If the machine
> appears to work normally, running something like Knoppix Linux, then
> that would suggest the driver is doing something strange in Windows.
I tried a Linux LiveCD as you suggested Paul and there's no change, the
problem is still there - so it's hardware then. Oh dear :o(
Cheers mate,
Pete
Pete Zahut
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
>>>>> 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/q235/darkdoo/?action=view¤t=laptop2.jpg
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
>>>>>
>>>>> Any ideas what's wrong and how to fix it?
>>>>>
>>>>> TIA,
>>>> Hi Pete! Wow that is weird. An external monitor I can see this
>>>> happening. Internal monitor, I never saw this. Any chance you can
>>>> hook it up to an external? I suspect the same result. Although you
>>>> may adjust it to display correctly. In either case, I believe you
>>>> have to take it in for service. It is still under warrantee, right?
>>> I haven't as yet hooked it up to an external monitor, but will do
>>> later today when I have chance, and let you know what I find.
>>> Unfortunately, it's not in warranty so whatever it is, I'll have to
>>> pay for the repair if it's a hardware fault :o(
>>>
>>> Thanks Bill
>>
>> Bill (and anyone else who's interested, of course), further to the
>> above I've now hooked it up to an external monitor and the display
>> on the external monitor is perfect.
>>
>> Photo at
>> http://s137.photobucket.com/albums/q235/darkdoo/?action=view¤t=laptop2a.jpg
>>
>> Don't know what that means though :o(
>>
>> Pete
Problem is though Barry, I've tried it outside of Windows as I explain above
(delineated with &&&&&). I also get the same result if I just go into the
BIOS at bootup or run a Linux LiveCD as suggested by Paul, so I'm
unfortunately resigned to it being an expensive hardware problem now. Thanks
anyway mate.
Pete
Pete Zahut
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
Barry Watzman
Is there any chance that at some point someone replaced the LCD panel
with a different model?
kony
<dont@bother> wrote:
>> When you bought the laptop, the panel may have been declared as
>> "1440x900" or the like. What does the control panel currently claim for
>> the
>> resolution setting ?
>
>Actually the laptop belongs to my niece (or it did until recently when she
>decided to get a new one and gave this one to me :o)) so I don't know what
>it was declared as when new. When I look in Control Panel, there's a choice
>of only two resolutions, 800x600 and 1024x768. There's a tick-box with the
>words "Hide resolutions that this panel cannot display" (or something to
>that effect) and there is currently a tick in that box. When I deselect that
>choice, other resolutions become available, but selecting any of them makes
>no change to the width of the display - that 65mm strip of "darkness" is
>still there.
You need to uninstall (if one is installed) the video driver
then reinstall it again. It may be found on Acer's site or
Intels. I'd go with Intel's since it is probably newer.
Appears to be Intel 950 video.
Because the driver is not working if present at all, you
won't have the 1280x800 resolution needed. It appears then
that what you see on the right side is simply 1280-1024=256
unused columns of pixels.
>> Another test you can try, is to boot a Linux LiveCD and do some
>> testing there. If the same weird effect is present, then the problem
>> is hardware (panel doing something it shouldn't). If the machine
>> appears to work normally, running something like Knoppix Linux, then
>> that would suggest the driver is doing something strange in Windows.
>
>I tried a Linux LiveCD as you suggested Paul and there's no change, the
>problem is still there - so it's hardware then. Oh dear :o(
This is not proof it is hardware, the LiveCD may simply lack
support for the Intel GMA video it appears to use. The bios
is the wild-card, it should fill the whole screen but
because it doesn't offer the native resolution in windows
there does seem to be a driver problem.
One last thought, is it possible the screen on this laptop
has been replaced (presumably due to damage) with the wrong
one?
kony
<Bil...@aol.kom> wrote:
>In news:U9PIl.87027$GU6....@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.
Pete Zahut
> Can you post a screen shot of what the BIOS looks like?
Photo of BIOS screen here:
http://s137.photobucket.com/albums/q235/darkdoo/?action=view¤t=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
V1377 - but no different.
Barry Watzman
clearly a hardware issue. Any chance that it was flashed with the wrong
bios or that someone changed the LCD panel?
Paul
> 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
This article mentions that the BIOS can declare some info
about the panel, using an ACPI entry. The BIOS passes ACPI tables
to the operating system. You can look in Device Manager, or
alternately, use Everest Free Edition, to dump a text file
with a lot of that stuff.
http://www.microsoft.com/whdc/archive/mobiledisplay.mspx
http://majorgeeks.com/download4181.html
I also noticed, when looking at the Intel driver on the
Acer 5630 download page (acer.co.uk), that it has an option
to define the resolution and refresh rate during installation.
Which is a pretty strange option to see. You'd think that
info would be fixed in some other way. Maybe it is for
development purposes or something, or used to override
some default ?
Paul
BillW50
kony typed on Sun, 26 Apr 2009 23:21:01 -0400:
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.
Pete Zahut
> 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:
MS_0003 (Registry*)
Monitor
Windows description...... Digital Flat Panel (1024x768)
Manufacturer............. Microsoft
Plug and Play ID......... MS_0003
Serial number............ 3
Manufacture date......... 2002, ISO week 0
-------------------------
EDID revision............ 1.3
Input signal type........ Digital
Color bit depth.......... Undefined
Display type............. RGB color
Screen size.............. 2550 x 2550 mm
Power management......... Standby, Suspend
Extension blocs.......... None
-------------------------
DDC/CI................... n/a
Color characteristics
Default color space...... sRGB
Display gamma............ 3.55
Red chromaticity......... Rx 0.625 - Ry 0.340
Green chromaticity....... Gx 0.285 - Gy 0.605
Blue chromaticity........ Bx 0.148 - By 0.063
White point (default).... Wx 0.281 - Wy 0.309
Additional descriptors... None
Timing characteristics
Horizontal scan range.... 0-235kHz
Vertical scan range...... 0-60Hz
Video bandwidth.......... 70MHz
CVT standard............. Not supported
GTF standard............. Supported
Additional descriptors... None
Preferred timing......... Yes
Native/preferred timing.. 1024x768p at 60Hz
Modeline............... "1024x768" 65.000 1024 1048 1184 1344 768 769
775 806 -hsync -vsync
Standard timings supported
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
LPL0000 (registry)
Monitor
Windows description...... Plug and Play Monitor
Manufacturer............. LPL
Plug and Play ID......... LPL0000
Data string.............. LGPhilipsLCD LP154W01-TLA1
Serial number............ n/a
Manufacture date......... 2005, ISO week 0
-------------------------
EDID revision............ 1.2
Input signal type........ Digital
Color bit depth.......... Undefined
Display type............. RGB color
Screen size.............. 330 x 210 mm (15.4 in)
Power management......... Not supported
Extension blocs.......... None
-------------------------
DDC/CI................... n/a
Color characteristics
Default color space...... Non-sRGB
Display gamma............ 2.20
Red chromaticity......... Rx 0.590 - Ry 0.344
Green chromaticity....... Gx 0.323 - Gy 0.534
Blue chromaticity........ Bx 0.156 - By 0.138
White point (default).... Wx 0.313 - Wy 0.328
Additional descriptors... None
Timing characteristics
Range limits............. Not available
GTF standard............. Not supported
Additional descriptors... None
Preferred timing......... Yes
Native/preferred timing.. 1280x800p at 60Hz
Modeline............... "1280x800" 71.250 1280 1328 1360 1440 800 802
808 823 -hsync -vsync
Standard timings supported
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
NEC61BE (registry)
Monitor
Windows description...... Plug and Play Monitor
Manufacturer............. NEC
Plug and Play ID......... NEC61BE
Serial number............ 1278
Manufacture date......... 2001, ISO week 27
-------------------------
EDID revision............ 1.3
Input signal type........ Digital
Color bit depth.......... Undefined
Display type............. RGB color
Screen size.............. 2550 x 2550 mm
Power management......... Standby, Suspend
Extension blocs.......... None
-------------------------
DDC/CI................... n/a
Color characteristics
Default color space...... sRGB
Display gamma............ 3.55
Red chromaticity......... Rx 0.625 - Ry 0.340
Green chromaticity....... Gx 0.285 - Gy 0.605
Blue chromaticity........ Bx 0.148 - By 0.063
White point (default).... Wx 0.281 - Wy 0.309
Additional descriptors... None
Timing characteristics
Horizontal scan range.... 27-60kHz
Vertical scan range...... 56-75Hz
Video bandwidth.......... 90MHz
CVT standard............. Not supported
GTF standard............. Not supported
Additional descriptors... None
Preferred timing......... Yes
Native/preferred timing.. 1024x768p at 75Hz
Modeline............... "1024x768" 81.800 1024 1080 1192 1360 768 769
772 802 -hsync +vsync
Detailed timing #1....... 640x480p at 56Hz
Modeline............... "640x480" 22.220 640 656 720 800 480 481 484
496 -hsync +vsync
Standard timings supported
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
NUL0001 (registry)
Monitor
Windows description...... Plug and Play Monitor
Manufacturer............. NUL
Plug and Play ID......... NUL0001
Serial number............ 1
Manufacture date......... 2002, ISO week 32
-------------------------
EDID revision............ 1.3
Input signal type........ Analog 0.700,0.300 (1.0V p-p)
Sync input support....... Separate
Display type............. RGB color
Screen size.............. 340 x 270 mm (17.1 in)
Power management......... Standby, Suspend
Extension blocs.......... None
-------------------------
DDC/CI................... n/a
Color characteristics
Default color space...... Non-sRGB
Display gamma............ 1.00
Red chromaticity......... Rx 0.609 - Ry 0.352
Green chromaticity....... Gx 0.303 - Gy 0.550
Blue chromaticity........ Bx 0.148 - By 0.128
White point (default).... Wx 0.305 - Wy 0.342
Additional descriptors... None
Timing characteristics
Range limits............. Not available
GTF standard............. Not supported
Additional descriptors... None
Preferred timing......... Yes
Native/preferred timing.. 1280x1024p at 60Hz (5:4)
Modeline............... "1280x1024" 108.000 1280 1328 1440 1688 1024
1025 1028 1066 +hsync +vsync
Standard timings supported
720 x 400p at 70Hz - IBM VGA
640 x 480p at 60Hz - IBM VGA
640 x 480p at 72Hz - VESA
640 x 480p at 75Hz - VESA
800 x 600p at 56Hz - VESA
800 x 600p at 60Hz - VESA
800 x 600p at 72Hz - VESA
800 x 600p at 75Hz - VESA
1024 x 768p at 60Hz - VESA
1024 x 768p at 70Hz - VESA
1024 x 768p at 75Hz - VESA
1280 x 1024p at 75Hz - VESA
1280 x 1024p at 60Hz - VESA STD
Sorry again for such a long post.
> This article mentions that the BIOS can declare some info
> about the panel, using an ACPI entry. The BIOS passes ACPI tables
> to the operating system. You can look in Device Manager, or
> alternately, use Everest Free Edition, to dump a text file
> with a lot of that stuff.
>
> http://www.microsoft.com/whdc/archive/mobiledisplay.mspx
>
> http://majorgeeks.com/download4181.html
Everest says that it doesn't fully support my chipset (Intel Calistoga
i945GM/PM) but it's probably just as well or there would be much more info
:o)
> I also noticed, when looking at the Intel driver on the
> Acer 5630 download page (acer.co.uk), that it has an option
> to define the resolution and refresh rate during installation.
> Which is a pretty strange option to see. You'd think that
> info would be fixed in some other way. Maybe it is for
> development purposes or something, or used to override
> some default ?
>
> Paul
Thanks again for your time mate,
Pete
Fixer
solved he has the answer, its the panel or cable he knows what it is stop
confusing the guy
"Barry Watzman" <Watzma...@neo.rr.com> wrote in message
news:CCiJl.56835$g%5.2...@newsfe23.iad...
Paul
> 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:
>
> &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
>
> 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
kony
<Bil...@aol.kom> wrote:
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?
Barry Watzman
have a brightness adjustment (and, sometimes, not even that). Only
older DSTN displays (no longer made for laptops) had a "contrast"
adjustment.
Barry Watzman
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.
BillW50
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.
Barry Watzman
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
Barry Watzman typed on Tue, 28 Apr 2009 11:51:27 -0400:
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/img183/298/20090428111323.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.
kony
<Watzma...@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.
kony
<Watzma...@neo.rr.com> wrote:
>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.
Based on the linked picture, the distortion on the bottom of
the displayed image does make it look like more than just a
lack of the image filling the entire screen.
Pete Zahut
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
Larry
> 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
>
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.....
Pete Zahut
>> 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)
Larry
> 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....
malarky
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:
> Pete
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Conor
says...
>
> 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?
>
--
Conor
www.notebooks-r-us.co.uk
I only please one person per day. Today is not your day. Tomorrow isn't
looking good either. - Scott Adams
Pete Zahut
All I can say is Ebay for the cable and then download a manual from here
http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-acer
HTH,
Pete
bhaceruser
Thanks to everyone for this very useful thread.
Had the same problem on my Acer Aspire 5630. Only 1024x768 area of the
1280x800 display was useable, with a wide black margin on the right and
an area at the bottom where the last row of the display is stretched
down to the bottom of the screen.
After seeing this thread, I bought a second hand cable off ebay (3.50
GBP delivered - bargain!). Changing the cable has solved the problem,
and the display now works correctly.
New cable was advertised as coming from an Acer Aspire 5680, but it had
the same text on the label:
HBL51/HBL50 15.4" WXGA
DC020007O00
MEC REV: 2.1
I unpicked the tape from the faulty cable and found a broken yellow
wire, right where the cable bends in the hinge as you would expect.
Thanks again - laptop is now fixed for minimal cost.
pvkaru
Hi Pete Zahut,
In your case. Could you please try following options.
1. Connect your laptop to a external display such as pc monitor or Your
home TV. If it doesn't works Then
2. You can boot your system to safe mode and see it gives you the full
screen. If it gives you full screen then try to install correct graphic
driver.
Before you change your hardware parts better if you do above steps.
Good luck,
Pradeep
pvk...@yahoo.com