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#1
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Random display flicker on laptop
Hi, been troubleshooting this display flicker problem on a new laptop
assigned to me by my company ever since I got it a few months ago. (My internal IT dept is like working with overseas Dell support, so I'd rather do it myself, if you know what I mean.) I have the problem narrowed down but still need help diagnosing how to fix it. The laptop is a Compaq NC8430. In troubleshooting, I've updated to the latest versions of the bios and the ATI Radeon X1600 driver. I also have the Catalyst Control Center. The flicker is best described as a quick flash to black, although sometimes it looks like the display shifts to the left a bit and then returns to position. It's very quick, and happens on both the laptop screen and the secondary monitor that I have plugged in. It happens randomly, roughly every 5 seconds to several minutes. I've narrowed it down to this cause: If I go into Windows display properties, click the secondary monitor and check "extend my desktop to this display", then I get the flicker behavior. As long as that box is NOT checked, then the display is fine. Of course this means that if I want to use all that yummy screen real estate of the second monitor, I have to put up with the flicker. None of the other display settings have made a difference, nor have things like resolution or refresh rate. Oh, and I should say that since this is a work machine, there are no games on it so it's not (I think) a problem with 3d or anything like that. Any ideas would be hugely appreciated! |
#2
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Random display flicker on laptop
wrote in message
oups.com... Hi, been troubleshooting this display flicker problem on a new laptop assigned to me by my company ever since I got it a few months ago. (My internal IT dept is like working with overseas Dell support, so I'd rather do it myself, if you know what I mean.) I have the problem narrowed down but still need help diagnosing how to fix it. The laptop is a Compaq NC8430. In troubleshooting, I've updated to the latest versions of the bios and the ATI Radeon X1600 driver. I also have the Catalyst Control Center. The flicker is best described as a quick flash to black, although sometimes it looks like the display shifts to the left a bit and then returns to position. It's very quick, and happens on both the laptop screen and the secondary monitor that I have plugged in. It happens randomly, roughly every 5 seconds to several minutes. I've narrowed it down to this cause: If I go into Windows display properties, click the secondary monitor and check "extend my desktop to this display", then I get the flicker behavior. As long as that box is NOT checked, then the display is fine. Of course this means that if I want to use all that yummy screen real estate of the second monitor, I have to put up with the flicker. None of the other display settings have made a difference, nor have things like resolution or refresh rate. Oh, and I should say that since this is a work machine, there are no games on it so it's not (I think) a problem with 3d or anything like that. Any ideas would be hugely appreciated! What version of Windows and what monitor? Do you have the correct .INF file installed to set the parameters for the monitor. Should be able to get it from MFG website if not. Any problems in Device Manager? |
#3
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Random display flicker on laptop
Captain Midnight wrote: wrote in message oups.com... Hi, been troubleshooting this display flicker problem on a new laptop assigned to me by my company ever since I got it a few months ago. (My internal IT dept is like working with overseas Dell support, so I'd rather do it myself, if you know what I mean.) I have the problem narrowed down but still need help diagnosing how to fix it. The laptop is a Compaq NC8430. In troubleshooting, I've updated to the latest versions of the bios and the ATI Radeon X1600 driver. I also have the Catalyst Control Center. The flicker is best described as a quick flash to black, although sometimes it looks like the display shifts to the left a bit and then returns to position. It's very quick, and happens on both the laptop screen and the secondary monitor that I have plugged in. It happens randomly, roughly every 5 seconds to several minutes. I've narrowed it down to this cause: If I go into Windows display properties, click the secondary monitor and check "extend my desktop to this display", then I get the flicker behavior. As long as that box is NOT checked, then the display is fine. Of course this means that if I want to use all that yummy screen real estate of the second monitor, I have to put up with the flicker. None of the other display settings have made a difference, nor have things like resolution or refresh rate. Oh, and I should say that since this is a work machine, there are no games on it so it's not (I think) a problem with 3d or anything like that. Any ideas would be hugely appreciated! What version of Windows and what monitor? Do you have the correct .INF file installed to set the parameters for the monitor. Should be able to get it from MFG website if not. Any problems in Device Manager? The secondary monitor is a ViewSonic VP171b. I'm running Win XP Pro SP2. There are no problems in device manager. The secondary monitor seems to work fine, and in fact flickers less than the laptop screen when I use it. I first reported this on HP's laptop support forum and haven't gotten any help yet, but lots of other people reporting the same problem. |
#4
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Random display flicker on laptop
wrote in message
oups.com... Captain Midnight wrote: wrote in message oups.com... Hi, been troubleshooting this display flicker problem on a new laptop assigned to me by my company ever since I got it a few months ago. (My internal IT dept is like working with overseas Dell support, so I'd rather do it myself, if you know what I mean.) I have the problem narrowed down but still need help diagnosing how to fix it. The laptop is a Compaq NC8430. In troubleshooting, I've updated to the latest versions of the bios and the ATI Radeon X1600 driver. I also have the Catalyst Control Center. The flicker is best described as a quick flash to black, although sometimes it looks like the display shifts to the left a bit and then returns to position. It's very quick, and happens on both the laptop screen and the secondary monitor that I have plugged in. It happens randomly, roughly every 5 seconds to several minutes. I've narrowed it down to this cause: If I go into Windows display properties, click the secondary monitor and check "extend my desktop to this display", then I get the flicker behavior. As long as that box is NOT checked, then the display is fine. Of course this means that if I want to use all that yummy screen real estate of the second monitor, I have to put up with the flicker. None of the other display settings have made a difference, nor have things like resolution or refresh rate. Oh, and I should say that since this is a work machine, there are no games on it so it's not (I think) a problem with 3d or anything like that. Any ideas would be hugely appreciated! What version of Windows and what monitor? Do you have the correct .INF file installed to set the parameters for the monitor. Should be able to get it from MFG website if not. Any problems in Device Manager? The secondary monitor is a ViewSonic VP171b. I'm running Win XP Pro SP2. There are no problems in device manager. The secondary monitor seems to work fine, and in fact flickers less than the laptop screen when I use it. I first reported this on HP's laptop support forum and haven't gotten any help yet, but lots of other people reporting the same problem. You want the .INF file for the ViewSonic even if it doesn't affect the problem. Sounds like you'll have to wait for Dell to fix it. Don't know how Dell support works but with standard M/B I'd also make sure to have the latest chipset drivers. |
#5
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Random display flicker on laptop
Captain Midnight wrote: wrote in message oups.com... Captain Midnight wrote: wrote in message oups.com... Hi, been troubleshooting this display flicker problem on a new laptop assigned to me by my company ever since I got it a few months ago. (My internal IT dept is like working with overseas Dell support, so I'd rather do it myself, if you know what I mean.) I have the problem narrowed down but still need help diagnosing how to fix it. The laptop is a Compaq NC8430. In troubleshooting, I've updated to the latest versions of the bios and the ATI Radeon X1600 driver. I also have the Catalyst Control Center. The flicker is best described as a quick flash to black, although sometimes it looks like the display shifts to the left a bit and then returns to position. It's very quick, and happens on both the laptop screen and the secondary monitor that I have plugged in. It happens randomly, roughly every 5 seconds to several minutes. I've narrowed it down to this cause: If I go into Windows display properties, click the secondary monitor and check "extend my desktop to this display", then I get the flicker behavior. As long as that box is NOT checked, then the display is fine. Of course this means that if I want to use all that yummy screen real estate of the second monitor, I have to put up with the flicker. None of the other display settings have made a difference, nor have things like resolution or refresh rate. Oh, and I should say that since this is a work machine, there are no games on it so it's not (I think) a problem with 3d or anything like that. Any ideas would be hugely appreciated! What version of Windows and what monitor? Do you have the correct .INF file installed to set the parameters for the monitor. Should be able to get it from MFG website if not. Any problems in Device Manager? The secondary monitor is a ViewSonic VP171b. I'm running Win XP Pro SP2. There are no problems in device manager. The secondary monitor seems to work fine, and in fact flickers less than the laptop screen when I use it. I first reported this on HP's laptop support forum and haven't gotten any help yet, but lots of other people reporting the same problem. You want the .INF file for the ViewSonic even if it doesn't affect the problem. Sounds like you'll have to wait for Dell to fix it. Don't know how Dell support works but with standard M/B I'd also make sure to have the latest chipset drivers. Sorry, you're a bit confused. I said that working with my internal IT dept was *LIKE* Dell support. I don't work for Dell, and the laptop is an HP/Compaq. :-) I have the latest chipset drivers, fully updated BIOS, and it is using the Viewsonic .inf file. I just think it's wierd that it only happens when I have the "extend my desktop to this monitor" box checked. There's no flicker if if that box isn't checked, even if the monitor is plugged in and on. |
#6
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Random display flicker on laptop
Make sure both the laptop screen and the secondary monitor are running at
the same refresh rate when you extend the desktop. If possible, set both to 60 Hz. -- "War is the continuation of politics by other means. It can therefore be said that politics is war without bloodshed while war is politics with bloodshed." wrote in message ps.com... The secondary monitor is a ViewSonic VP171b. I'm running Win XP Pro SP2. There are no problems in device manager. The secondary monitor seems to work fine, and in fact flickers less than the laptop screen when I use it. I first reported this on HP's laptop support forum and haven't gotten any help yet, but lots of other people reporting the same problem. You want the .INF file for the ViewSonic even if it doesn't affect the problem. Sounds like you'll have to wait for Dell to fix it. Don't know how Dell support works but with standard M/B I'd also make sure to have the latest chipset drivers. Sorry, you're a bit confused. I said that working with my internal IT dept was *LIKE* Dell support. I don't work for Dell, and the laptop is an HP/Compaq. :-) I have the latest chipset drivers, fully updated BIOS, and it is using the Viewsonic .inf file. I just think it's wierd that it only happens when I have the "extend my desktop to this monitor" box checked. There's no flicker if if that box isn't checked, even if the monitor is plugged in and on. |
#7
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Random display flicker on laptop
First of One wrote: Make sure both the laptop screen and the secondary monitor are running at the same refresh rate when you extend the desktop. If possible, set both to 60 Hz. -- Ok, thanks for the suggestion. I double checked and made sure that both monitors are on the same refresh rate. It still has the problem. I guess for now I'll use just the laptop screen for the most part, and only extend the desktop when I need to use both screens. Kind of a bummer, but I'm out of ideas... |
#8
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Random display flicker on laptop
Did you try to change the video overlay mode to standard dual mode?
I also have the problem, and it seems to be related to the overlay windows used by players, tv cards etc. Only when using clone or extended dual screen. wrote in message oups.com... First of One wrote: Make sure both the laptop screen and the secondary monitor are running at the same refresh rate when you extend the desktop. If possible, set both to 60 Hz. -- Ok, thanks for the suggestion. I double checked and made sure that both monitors are on the same refresh rate. It still has the problem. I guess for now I'll use just the laptop screen for the most part, and only extend the desktop when I need to use both screens. Kind of a bummer, but I'm out of ideas... |
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