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Thread Tools | Display Modes |
#1
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Dim backlight in XP on Gateway laptop
I've got a new Gateway T-6815 laptop. This machine comes from Gateway with
Vista pre-installed. The first thing I want to do is wipe Vista and install XP Pro SP2. I've got XP installed and mostly working... Still need to find audio drivers. My problem is the display. I've got the latest video drivers from Intel - 965 chipset - and they installed fine. Unfortunately, these drivers turn the backlight WAY down and I can't find any way to correct this. I know the backlight is working because the display is great when in the BIOS. Anyone have any ideas how to correct this? |
#2
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Dim backlight in XP on Gateway laptop
On Jan 6, 4:08 pm, "Calab" wrote:
I've got a new Gateway T-6815 laptop. This machine comes from Gateway with Vista pre-installed. The first thing I want to do is wipe Vista and install XP Pro SP2. I've got XP installed and mostly working... Still need to find audio drivers. My problem is the display. I've got the latest video drivers from Intel - 965 chipset - and they installed fine. Unfortunately, these drivers turn the backlight WAY down and I can't find any way to correct this. I know the backlight is working because the display is great when in the BIOS. Anyone have any ideas how to correct this? Interesting. Could it be due to XP's bad battery management? Vista increased my battery life by about 45 minutes or so on my laptop. Maybe the power management is throttling back the LCD due to low battery? Does it still do it on AC mains? |
#3
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Dim backlight in XP on Gateway laptop
My problem is the display. I've got the latest video drivers from Intel -
965 chipset - and they installed fine. Unfortunately, these drivers turn the backlight WAY down and I can't find any way to correct this. I know the backlight is working because the display is great when in the BIOS. Anyone have any ideas how to correct this? Interesting. Could it be due to XP's bad battery management? Vista increased my battery life by about 45 minutes or so on my laptop. Maybe the power management is throttling back the LCD due to low battery? Does it still do it on AC mains? Doesn't matter if it's on battery or AC. Tried adjusting power modes in the Intel settings and Windows power management with no luck. : ( |
#4
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Dim backlight in XP on Gateway laptop
On Jan 6, 4:50 pm, "Calab" wrote:
My problem is the display. I've got the latest video drivers from Intel - 965 chipset - and they installed fine. Unfortunately, these drivers turn the backlight WAY down and I can't find any way to correct this. I know the backlight is working because the display is great when in the BIOS. Anyone have any ideas how to correct this? Interesting. Could it be due to XP's bad battery management? Vista increased my battery life by about 45 minutes or so on my laptop. Maybe the power management is throttling back the LCD due to low battery? Does it still do it on AC mains? Doesn't matter if it's on battery or AC. Tried adjusting power modes in the Intel settings and Windows power management with no luck. : ( Strange - one would think the latest drivers would be the same whether using XP or Vista. Did you back up the original drivers and so on that came with the laptop, or do you have them on a CD or something? Perhaps there is some utility program that is intended to be installed to manage backlight settings or something? I don;t think the backlight is part of the display driver system. Could it be an issue with the display driver, though, like a gamma correction error or a brightness\contrast setting thats wrong? |
#5
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Dim backlight in XP on Gateway laptop
Calab wrote:
I've got a new Gateway T-6815 laptop. This machine comes from Gateway with Vista pre-installed. The first thing I want to do is wipe Vista and install XP Pro SP2. I've got XP installed and mostly working... Still need to find audio drivers. My problem is the display. I've got the latest video drivers from Intel - 965 chipset - and they installed fine. Unfortunately, these drivers turn the backlight WAY down and I can't find any way to correct this. I know the backlight is working because the display is great when in the BIOS. Anyone have any ideas how to correct this? Look into the bios settings. There are likely to be two levels settable, one for battery power, and one for AC power. Also consider installing Linux. I suggest Ubuntu. You can get the whole schmeer free as a CD from shipit.ubuntu.com. -- Chuck F (cbfalconer at maineline dot net) http://cbfalconer.home.att.net Try the download section. -- Posted via a free Usenet account from http://www.teranews.com |
#6
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Dim backlight in XP on Gateway laptop
Calab wrote:
My problem is the display. I've got the latest video drivers from Intel - 965 chipset - and they installed fine. Unfortunately, these drivers turn the backlight WAY down and I can't find any way to correct this. I know the backlight is working because the display is great when in the BIOS. Anyone have any ideas how to correct this? Interesting. Could it be due to XP's bad battery management? Vista increased my battery life by about 45 minutes or so on my laptop. Maybe the power management is throttling back the LCD due to low battery? Does it still do it on AC mains? Doesn't matter if it's on battery or AC. Tried adjusting power modes in the Intel settings and Windows power management with no luck. : ( I don't have a laptop here, so cannot look for Device Manager entries and the like. For some hardware, the BIOS knows the specifics of what is underneath. The BIOS may pass certain information, in the ACPI tables. For example, if I use Everest, and look in Physical Devices, I may see PNP0xxx (plug and play) devices with "ACPI" in the name. It could be that the backlight setting is passed as one of these. It may not necessarily be covered by a chipset driver. Ideally, it should be managed under the ACPI system, because then, when you switch between AC and battery, a whole bunch of policies can be set in one shot. It doesn't make sense to have a bunch of non-uniform, separate drivers, for every bit of custom hardware they happened to add. Perhaps if you review what ACPI or PNP stuff is visible in Vista, then you'll have a better idea what to look for in WinXP. Paul |
#7
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Dim backlight in XP on Gateway laptop
On Sat, 5 Jan 2008 20:18:32 -0800 (PST), AdenOne
wrote: Strange - one would think the latest drivers would be the same whether using XP or Vista. Did you back up the original drivers and so on that came with the laptop, or do you have them on a CD or something? Perhaps there is some utility program that is intended to be installed to manage backlight settings or something? There should be a utility to adjust the power managed features such as clockspeed, display brightness, turning off unused functions based on profiles that correspond to user-set scenarios or whether running off battery or AC power. These settings might also be in the bios to a more limited extent. The OP should seek this power management utility from Gateway or install it if already in possession of it. The same util that works on vista may work on XP. I don;t think the backlight is part of the display driver system. Correct, the backlight is not part of the display driver, but display drivers do often have brightness settings so it is possible that is an issue but the power management util should be tried first. Could it be an issue with the display driver, though, like a gamma correction error or a brightness\contrast setting thats wrong? Possible, looking in Display Properties would be one thing to do but I would expect the defaults for these were a middling correct value and it's more likely the power managed settings causing lower brightness. |
#8
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Dim backlight in XP on Gateway laptop
"Calab" wrote in message news:OCXfj.17645$uV6.14541@pd7urf1no... I've got a new Gateway T-6815 laptop. This machine comes from Gateway with Vista pre-installed. The first thing I want to do is wipe Vista and install XP Pro SP2. I've got XP installed and mostly working... Still need to find audio drivers. My problem is the display. I've got the latest video drivers from Intel - 965 chipset - and they installed fine. Unfortunately, these drivers turn the backlight WAY down and I can't find any way to correct this. I know the backlight is working because the display is great when in the BIOS. Anyone have any ideas how to correct this? This might help. Look for fn key, then there should be a key elsewhere with either a sun or other brightness up and down indicator on it. Depress fn and brightness up if you have that option. Could do it if somehow the brightness level has been turned down. JG |
#9
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Dim backlight in XP on Gateway laptop
Calab wrote:
I've got a new Gateway T-6815 laptop. This machine comes from Gateway with Vista pre-installed. The first thing I want to do is wipe Vista and install XP Pro SP2. Laptops are designed to work with the OS they came with. -- http://www.bootdisk.com/ |
#10
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Dim backlight in XP on Gateway laptop
Plato wrote:
Calab wrote: I've got a new Gateway T-6815 laptop. This machine comes from Gateway with Vista pre-installed. The first thing I want to do is wipe Vista and install XP Pro SP2. Laptops are designed to work with the OS they came with. Don't repeat this particular idiocy. -- Chuck F (cbfalconer at maineline dot net) http://cbfalconer.home.att.net Try the download section. -- Posted via a free Usenet account from http://www.teranews.com |
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