For Advantech users relying on iKVM displays, a blank screen can be a major headache. In this article, we'll walk you through a scenario where the iKVM display shows a blank screen due to design limitations, and offer strategies for resolving this issue quickly and efficiently.
All users with Advantech platforms supporting BMC feature.
Both VGA and iKVM are rooted from the BMC AST2500/AST2600, and therefore they exhibit the same display behavior. The reference diagram from SKY-8201 is provided below for your reference:
By default, the video output setting is set to onboard device under the BIOS settings.
Hence, if user inserts an external video card such as GPU, the following will occur:
A- Onboard device as Active Video: iKVM will display normally, but VGA output from the external card will fail to display.
B- PCIE device as Active Video: iKVM will show blank screen and VGA from external card will display correctly.
So, user can only select one display source from BIOS: either onboard device or PCIE device. This is a known design limitation.
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