Ah bah ca alors...
Ca fait 2 mois que je cherche, et suffit que je pose la question sur le forum pour "a priori" trouver...
this article from NEC displays. It states the problem is due to some cable manufactures not adhering to DisplayPort wiring specifics.
Certain Mini DisplayPort to DisplayPort cables available in the market do not adhere to the
DisplayPort design wiring specification. This incorrect design causes power-related issues with
the display and/or host computer.
The DisplayPort specification states that a display (known as a "sink" device) must output power
on its DisplayPort input connector. The specification also states that a graphics adapter (known
as a "source" device) must also output power on its DisplayPort output connector. The idea for
providing power on both the "source" and "sink" devices is that certain other devices connected
between the two can receive power. Such devices may be, for example, a repeater or a converter
of some sort.
When a cable is used to connect a display directly to a graphics adapter, the DisplayPort
specification states that the cable must not connect the power line, and the power outputs of the
two devices should not be connected together via the cable.
The cables that were manufactured incorrectly connect the power line through the cable and
allow the power outputs of the display and graphics adapter to be connected together - a
condition that is forbidden in the DisplayPort specification.
Because the two power sources are connected together when using one of these cables,
situations can arise in which one device is actually supplying power to the other. For example, if
the host computer is powered off but the display is on (or even in standby mode, the display will
inadvertently supply power to the host computer, which may cause problems such as not being
able to power on, enter sleep modes or resume correctly. Similarly, if the host computer is
powered on but the display is off, the computer will be supplying power to the display, which may
cause problems with the display powering on.
Here's the read>> http://www.necdisplay.com/document [...] Notice.pdf
Un model en particulier a me proposer ?
Message édité par pink floyd le 16-03-2013 à 11:04:39
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Oui aux titres de topic clair et precis...