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#21
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Acer Aspire 5630 Laptop screen/display problem
Can you post a screen shot of what the BIOS looks like?
Is there any chance that at some point someone replaced the LCD panel with a different model? 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 ) Thanks mate, Pete |
#22
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Acer Aspire 5630 Laptop screen/display problem
On Sun, 26 Apr 2009 19:44:03 +0100, "Pete Zahut"
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 )) 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 ( 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? |
#23
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Acer Aspire 5630 Laptop screen/display problem
On Sun, 26 Apr 2009 09:44:06 -0500, "BillW50"
wrote: In , Barry Watzman typed on Sat, 25 Apr 2009 21:55:00 -0400: "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. |
#24
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Acer Aspire 5630 Laptop screen/display problem
Barry Watzman wrote:
Can you post a screen shot of what the BIOS looks like? Photo of BIOS screen he 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 ) Thanks mate, Pete |
#25
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Acer Aspire 5630 Laptop screen/display problem
PS, just flashed BIOS from V2.90 to 3.60 and VGA BIOS from Intel V1264 to
V1377 - but no different. Pete Zahut wrote: Barry Watzman wrote: Can you post a screen shot of what the BIOS looks like? Photo of BIOS screen he 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 ) Thanks mate, Pete |
#26
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Acer Aspire 5630 Laptop screen/display problem
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 he 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 ) Thanks mate, Pete |
#27
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Acer Aspire 5630 Laptop screen/display problem
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 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/archiv...ledisplay.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 |
#28
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Acer Aspire 5630 Laptop screen/display problem
In ,
kony typed on Sun, 26 Apr 2009 23:21:01 -0400: On Sun, 26 Apr 2009 09:44:06 -0500, "BillW50" wrote: In , Barry Watzman typed on Sat, 25 Apr 2009 21:55:00 -0400: "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. -- Bill Asus EEE PC 701G4 ~ 2GB RAM ~ 16GB-SDHC Windows XP SP2 |
#29
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Acer Aspire 5630 Laptop screen/display problem
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 ) 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/archiv...ledisplay.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 ) 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 |
#30
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Acer Aspire 5630 Laptop screen/display problem
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" wrote in message ... 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 he 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 ) Thanks mate, Pete |
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