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Amphibulus
Posts: 75
Registered: ‎07-22-2011
Location: Canada
0

Re: x300 crashes after upgrading to Win7 only when unplugged

Buy a new X220 or reinstall your X300 in Vista...

ThinkPad X220, I7 2620M, 8GB RAM, Intel 320 160GB SSD, IPS screen, USB 3.0, Bluethoot, Cam, Win 7 pro 64, BIOS: 1.17, Model: 4286-CTO, Fabrication date: 07/11
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ccl13
Posts: 152
Registered: ‎10-12-2008
Location: Adelaide, Australia
0

Re: x300 crashes after upgrading to Win7 only when unplugged

It is a software issue with the driver of Intel GM965 Integrated Graphics. You should disable the Refresh Rate switch at plug/unplug in the driver's control panel. It is used as a power saving feature to switch from 60Hz to 50Hz at unplug, but it conflicts with the driver's other power saving features and something from Lenovo.

I don't have a X300 at hand so I cannot give out any instruction for you. But I think right click on desktop and there should be a menu looks like "Display Properties..." will bring you the interface that contains the said options.
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[2011]X220-4286-CTO(Brand new, hope nothing bad will happen to it...)[2008]X61-7673-CV2(Slipped upon it, but also working)[2002]X31-2672-BCH(Broke screen, but still working!)
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nothappy1
Posts: 15
Registered: ‎08-12-2011
Location: san francisco
0

Re: x300 crashes after upgrading to Win7 only when unplugged

Does that have anything to do with the screen dimming when I unplug? I was unable to disable the feature just switched to 50Hz. Thanks

lead_org
Posts: 20,895
Topics: 128
Kudos: 1,249
Solutions: 1,341
Registered: ‎12-19-2008
Location: Australia, Melbourne
0

Re: x300 crashes after upgrading to Win7 only when unplugged

send the laptop in, and ask the depot to install the Windows Vista and test the machine under Vista.

Only this way can you really have a footing to argue for a replacement machine.
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
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ccl13
Posts: 152
Registered: ‎10-12-2008
Location: Adelaide, Australia
0

Re: x300 crashes after upgrading to Win7 only when unplugged

@nothappy1 No I think screen dimming is because on AC/Battery uses different setting for brightness. You can adjust the brightness with FN+PgDn/PgUp. The refresh rate setting may be in the Power Saving tab of the Display Properties interface.
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[2011]X220-4286-CTO(Brand new, hope nothing bad will happen to it...)[2008]X61-7673-CV2(Slipped upon it, but also working)[2002]X31-2672-BCH(Broke screen, but still working!)
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nothappy1
Posts: 15
Registered: ‎08-12-2011
Location: san francisco
0

Re: x300 crashes after upgrading to Win7 only when unplugged

it works under Vista albeit slower....

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nothappy1
Posts: 15
Registered: ‎08-12-2011
Location: san francisco
0

Re: x300 crashes after upgrading to Win7 only when unplugged

yes i know the settings, just puzzled that screen brightness on full for unplugged as well and it still dimms, thanks
lead_org
Posts: 20,895
Topics: 128
Kudos: 1,249
Solutions: 1,341
Registered: ‎12-19-2008
Location: Australia, Melbourne
0

Re: x300 crashes after upgrading to Win7 only when unplugged

so it works under Vista with no BSOD when you are on battery?
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
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nothappy1
Posts: 15
Registered: ‎08-12-2011
Location: san francisco
0

Re: x300 crashes after upgrading to Win7 only when unplugged

Yes AFTER upgrading to 7. Vista works fine