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  • alexsupraJune 14, 2010 8:44 AM PDT   
    problem with 640x480 4bit on Mobile Intel Graphics

    i have the problem with 640x480 4bit on Mobile Intel 945 and 965 Graphics chipset family adapters.

    driver is being installed correctly with no error messages during installation. but after the first reboot (or after other device drivers installation and reboot, sometimes it takes place after several reboots) screen mode switches to 640x480 4 bit (16 colors) with no possibility to enable higher screen resolution or color depth.

    there are no exlamation marks in device manager, no failures or errors in drivers installation log.

    trying to setup normal video mode manually or automatically via wizard (system tray notification in case of low-res) is useless too. 640x480 4bit stays unchangable. it may look like it is able to apply 1280x800 32bit or another common video mode via screen control applet but nothing happens after pressing apply button.

    in case of removing original device drivers and using standard vga everything is ok. also in case of booting in safe mode vga driver normally works at standard 1024x768 32bit with no problems.

    various versions of compatible Intel Graphics drivers were tested (2007, 2008, 2009, 2010) with no effect.

    IEGD drivers is impossible to use cause they are mixing video outputs on notebooks and netbooks.

    now we got the problem on Toshiba notebook, earlier there were HP/Compaq, Asus and other notebooks and netbooks with on-board graphics of 9-series.

    in all cases Windows XP Pro SP3 was used with no antivirus software.

    any ideas?



    //stay tuned

    ildottoreAugust 22, 2010 6:17 AM PDT
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    		 #1
    problem with 640x480 4bit on Mobile Intel Graphics
    I have the same problem.
    Everything worked fine until one day when the driver wouldn't work. The OS is Win XP SP3, updated with all patches. I tried reinstalling the OS but the problem stays the same even if the kit for the OS and the drivers used are still the ones used to install intially the system about 2 years ago. The only difference is that I made a BIOS update in the mean time.
    I changed the OS to Windows 7 Ultimate and the driver looks ok except that the performance is worst than on XP. I've searched the internet and tried all I could try but nothing worked. I also tried the last versions of all the drivers but nothing worked.
    Who found any solution please put them online.

    alexsupraAugust 22, 2010 6:32 AM PDT
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    		 #2 Reply To #1
    problem with 640x480 4bit on Mobile Intel Graphics
    one possible solution was found by our team but it is not tested enough on various Intel Mobile Graphics adapters. you coluld help your self and other people with the same problem by testing the following Windows XP configuration changed via system registry (reg-file):

    Windows Registry Editor Version 5.00
    ; igfxpatch
    [hkey_local_machine\system\currentcontrolset\control\session manager\memory management]
    "largesystemcache"=dword:00000000
    "disablepagingexecutive"=dword:00000000

    its evident that system works slower with these settings but the problem with video adapter can be solved. check this out on your machine. it seems to me that its better to apply settings before the driver installation or during the driver setup to be activated on the next system boot. its also possible by including settings inside the driver inf-file e.g.:

    ; igfxpatch
    [igfxpatch.AddReg]
    HKLM,"system\currentcontrolset\control\session manager\memory management","largesystemcache",0x10001,00,00,00,00
    HKLM,"system\currentcontrolset\control\session manager\memory management","disablepagingexecutive",0x10001,00,00,00,00

    //stay tuned

    ildottoreAugust 23, 2010 1:25 AM PDT
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    		 #3 Reply To #2
    problem with 640x480 4bit on Mobile Intel Graphics
    Hi.

    I tested both solutions. It worked fine on XP. I've put the text into a .reg file and then started installing the driver and during the installation I executed the .reg file. After the restart, the resolution was the one expected.

    On windows 7 I've added the header of the file that was missing. The .reg file was this one:

    Windows Registry Editor Version 5.00
    ; igfxpatch
    [igfxpatch.AddReg]
    HKLM,"system\currentcontrolset\control\session manager\memory management","largesystemcache",0x10001,00,00,00,00
    HKLM,"system\currentcontrolset\control\session manager\memory management","disablepagingexecutive",0x10001,00,00,00,00

    I've tried the same method (while installing the driver, I've ran the .reg). After the restart, I've tried to refresh the Computer rating, but the result was still the same.

    If you have other solutions I have images for the 2 OS and I cand switch to the one I need fast enough and test.

    Thanks for your help.

    alexsupraAugust 23, 2010 1:47 AM PDT
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    		 #4 Reply To #3
    problem with 640x480 4bit on Mobile Intel Graphics
    would you mind to create empty text file, call it igfxpatch.reg, add the following strings:

    Windows Registry Editor Version 5.00
    ; igfxpatch
    [hkey_local_machine\system\currentcontrolset\control\session manager\memory management]
    "largesystemcache"=dword:00000000
    "disablepagingexecutive"=dword:00000000
    ;

    and save it?
    please, apply this reg-file (via double click) before the first driver installation procedure.

    as to your previous test as i understood you had mixed strings given for inf-file with reg-file syntax thus it couldnt influence at all. thank you a lot for your interest to problem and help in its investigation.

    //stay tuned

    ildottoreAugust 23, 2010 10:40 PM PDT
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    		 #5 Reply To #4
    problem with 640x480 4bit on Mobile Intel Graphics
    I did that. I can't apply the reg file before the first driver installation because Win7 has the driver for the video card and the driver is already there and all I can do is uninstall it apply the reg-file and then install the driver. The performance of the card got a little better I could say, but I think there's place for more. My test is a 720p mkv movie (in full screen) that runs just fine on XP but on 7 it isn't able to process it at the speed it should.

    alexsupraAugust 24, 2010 1:35 AM PDT
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    		 #6 Reply To #5
    problem with 640x480 4bit on Mobile Intel Graphics
    thank you again for information but the problem with low screen resolution 640x480 and low color depth 4bit occured in Windows XP. thus we are trying to find the solution of problem for Windows XP not for Windows 7. so Windows XP doesnt include by default device drivers for Mobile Intel Graphics of 9-series and its possible to apply settings via reg-file before the drivers installation procedure.


    //stay tuned
     Attachments 
    igfxpatch.reg

    ildottoreSeptember 28, 2010 11:43 AM PDT
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    		 #8 Reply To #6
    problem with 640x480 4bit on Mobile Intel Graphics
    Hi there.

    Did you miss me? Well, I'm back, with the same problem. Everything worked fine until today when the problem reappeared, even if this morning I used my laptop and it was working fine. Now, even if I try to install the latest driver from the Intel download site and even if adding the registry suggested, it doesn't work :(
    ... any other ideas or suggestions?

    alexsupraSeptember 28, 2010 2:28 PM PDT
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    		 #9 Reply To #8
    problem with 640x480 4bit on Mobile Intel Graphics
    hi bro. i'm happy to say that with using of Windows XP Service Pack 3 and chosen versions of device drivers i got the fully working variant tested on many desktops and laptops by the project team and myself. everything is ok. please try USETOOLS GENERIC device drivers installer (for Windows XP and 2003 only):


    //stay tuned

    ildottoreSeptember 28, 2010 10:55 PM PDT
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    		 #10 Reply To #9
    problem with 640x480 4bit on Mobile Intel Graphics
    I will try and return with a feedback.
    Thanks.

    alexsupraSeptember 29, 2010 12:47 AM PDT
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    		 #11 Reply To #10
    problem with 640x480 4bit on Mobile Intel Graphics
    before trying this driver installer please remove the current video adapter device driver and reboot machine. optionally you can backup your current system settings via built-in system restore function or another utility.
    please note that you must have full administrator rights in your system for running and using it.
    now i have uploaded the most recent video drivers package which is available via GENERIC drivers installer.
    as allways your feedback is appreciated very much for the following investigations and development.


    //stay tuned

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