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Desktop Background disappears when I swtich graphics - Win 7

2010-06-12, 16:01 PM

Hi Folks,

 

When I switch graphics between energy saving and high performance, more often than not my desktop background disappears, and i can't get it back.  I've tried changing themes, but doesn't seem to help.  Any ideas?

 

thanks!

 

T400 2764-CTO

Win 7 Pro x64

ATI Radeon Mobility 3450

 

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8701 Posts

01-13-2008

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Re: Desktop Background disappears when I swtich graphics - Win 7

2010-06-12, 16:12 PM

Hi ashenkin,

 

I have the same machine, same OS and same problem.

 

I also have a strange issue from time to time where desktop icons that have been removed, renamed, or deleted maintain their previous name or appearance until I do a  "refresh".

 

Sorry I don't have an answer for you.  I'll hang out here with you and hope for a fix too.

 

Z.


The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.


The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored - questions and answers belong in the forum so that others may contribute and benefit. ... GeezBlog

 

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382 Posts

02-13-2009

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Re: Desktop Background disappears when I swtich graphics - Win 7

2010-06-14, 5:13 AM

The problem is quite simple.  The two video drivers are using different windows themes.  This could be because windows is falling back to starter interface because of the Intel drivers, and is using aero when on the ATI.   I really can't think of anything other then switching to each mode and setting the display how you want it.. and hope it persists..  though it sounds more like an OS issue then anything else.   Keep in mind, Microsoft doesn't officially support switchable graphics in Win7.

Thinkpad T500-2081 CTO | T9400 2.53GHz | 8 GB RAM | ATI HD3650 + Intel GM45 | 15.4" LED WXGA+ | Windows 10 | ATI Catalyst 13.1 (non-switchable)
Thinkpad 390x | PII 333 | 256mb ram | NeoMagic 256AV | SVGA LCD | OS/2 v4.52
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Re: Desktop Background disappears when I swtich graphics - Win 7

2010-06-14, 12:25 PM

sys3175, but it's *not* so simple.  Your diagnosis isn't correct.  I just switched *back* from energy saver to discrete, and the black background has appeared again.  Aero is enabled.  Switching themes doesn't help.

 

I think it might be related to power manager.  When on battery power, i switched from discrete to on-board graphics, and then put the computer to sleep.  I then plugged in, woke the computer up, and switched back to discrete.  And the black background appears.

 

There are other bad interactions between ATI and Lenovo's (or windows'?) power manager.   Waking the computer up after switching power sources often results in blank screens, for example.  I believe there are other examples of bad interactions as well.

 

I'm not sure that's what's going on here, but it's my best guess.  Anyone else have any better ideas?

 

 

Note from Moderator:  A comment which violated the forum rules was removed.

 

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67 Posts

06-03-2009

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Re: Desktop Background disappears when I switch graphics - Win 7

2010-06-14, 12:54 PM

I have the same model (2764CTO) and experience the same exact symptoms.  It's not an issue with different backgrounds assign to respective video drivers but rather problems associated with the Lenovo switchable graphics drivers themselves.

 

Sometimes when I switch video modes, the background goes to black, which I think its supposed to do in certain energy-saving power configurations.  However, it usually happens when switching to the high performance mode,  I then have to switch back and forth several times in order to restore it.

 

The switchable-graphic Lenovo drivers are very buggy and haven't been updated since last Fall (13 Oct 2009 8.641.1.1There is a long history of issues with them.  Here's just one thread detailing more information.

 

It seems that until Lenovo decides to fix the drivers, we're stuck with them!

 

 

T400 2764CTO
Windows 7 x64
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Re: Desktop Background disappears when I switch graphics - Win 7

2010-06-15, 20:52 PM

I have used the drivers with no issues under vista.  I only use the new ATI drivers because I do a certain amount of gaming on this computer and require the latest drivers.  Windows7 has issues with switchable drivers.  However I don't believe it is impossible to get them working properly.   The only thing you can do is try to determine the circumstances which cause the problem.  Does it happen with all background images?  Or just certain sizes/resolutions.  The switching is a multi stage process..  it is possible the image disapearing happens when the resolution switching occurs. 

Thinkpad T500-2081 CTO | T9400 2.53GHz | 8 GB RAM | ATI HD3650 + Intel GM45 | 15.4" LED WXGA+ | Windows 10 | ATI Catalyst 13.1 (non-switchable)
Thinkpad 390x | PII 333 | 256mb ram | NeoMagic 256AV | SVGA LCD | OS/2 v4.52
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Re: Desktop Background disappears when I swtich graphics - Win 7

2010-06-15, 20:55 PM

 


wrote:

sys3175, but it's *not* so simple.  Your diagnosis isn't correct.  I just switched *back* from energy saver to discrete, and the black background has appeared again.  Aero is enabled.  Switching themes doesn't help.

 

I

 

Durring the switch the system will fall in and out of aero.. you may not see this happening, but it does.  This may not be the issue at hand but it could be causing the problem.  There may be power settings which could make this more likely to occur.  Does this happen all the time or only after switching to battery power?  Does it happen regardless of what power management profile is in use.   I am willing to offer any ideas I have as to how to work around or fix the issue.. just need to determine what the issue actually is.

 

Thinkpad T500-2081 CTO | T9400 2.53GHz | 8 GB RAM | ATI HD3650 + Intel GM45 | 15.4" LED WXGA+ | Windows 10 | ATI Catalyst 13.1 (non-switchable)
Thinkpad 390x | PII 333 | 256mb ram | NeoMagic 256AV | SVGA LCD | OS/2 v4.52
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