Este antigo tópico do fórum pode ser útil.
Thomas51:
After further research I found the root cause of the dual monitor problem. There is a task in the task scheduler called TMM (Microsoft Transient Multi-Monitor Manager). I disabled this task, and all seems to work fine now.
Josh:
Disabling TMM worked for me too, thanks a million! [...] But when TMM was off, it wouldn't detect if I had one plugged in when I logged in or came out of sleep [...]
_Tux_:
I found this problem to be caused by a registry setting created by the nvidia drivers I installed. It created a DWORD registry value in HKLM\Software\Microsoft\TMM called UseIViewHelper and set it to 1. I renamed this key to "UseIViewHelper old", rebooted and the problem is now gone. When I login, the external monitor resolution stays as it should and if I unplug it, Vista detects this and switches the laptop monitor back to be the main desktop.
E de outro tópico do fórum :
ATI has a control panel that allows you to change the monitor configuration. It appears that Windows and ATI were fighting over control, and ATI was winning. So, stop changing the dual monitor settings in Windows -- starting changing them in ATI, and my problems went away.
Além disso, essas soluções funcionavam para outras pessoas (do primeiro tópico do fórum que eu vinculei):
Dannyboy888:
Try switching the primary monitor to secondary and the secondary monitor to primary (or vice versa). It worked for me on a Toshiba Satellite running on Vista 64 bit. In Vista you can go to display setting --> advanced setting --> Intel® Graphic Media accelerator driver for Mobile --> graphic properties --> then, reverse the settings under display selection (primary to secondary or secondary to primary, in other words make display 1 into 2, 2 into 1 or vice versa).
Sparkle:
The layout problem was annoying me too, my external monitor kept defualting to the right. I have a DELL FP1905 Monitor and noticed that the monitor driver was defaulting to the Generic PnP driver, then realized I never installed the driver for this monitor. Once I installed the Dell driver for the FP1905 display (including restart, and updating the monitor layout settings once more) it seems to work flawlessly now. Vista must save layout settings per driver type and only resets the settings associated with the generic driver.
Então, eis o que eu recomendaria:
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Verifique os sites dos fabricantes dos seus monitores para obter os drivers de vídeo mais recentes - e enquanto estiver fazendo isso, verifique se os drivers de chipset e gráficos estão atualizados.
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Verifique se o software de gerenciamento do adaptador gráfico (por exemplo, ATI ou nVidia) pode estar em conflito com a configuração do Windows e, de acordo com a recomendação acima, mude para usar somente o software proprietário criado para sua placa gráfica.
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Tente editar manualmente o valor do registro para o TMM, conforme a recomendação feita por
_Tux_
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Tente alternar o monitor principal.
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Experimente a etapa de solução de problemas que recomendei na minha resposta anterior .
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Por fim, se nada disso resultar em uma solução para o problema, experimente um software de gerenciamento de janelas de terceiros, como Ignytion Windows Layout Manager (recomendado por
dennis
em uma postagem relacionadaSuperusuário ) ou Gerenciador real de janelas (recomendado porcoldblackice
em um tópico do fórum para resolver o seu problema) para restaurar as posições do seu Windows.