HDMI Expansion Card mod to save power

[dimitris]

@suliblian

Is it possible to flash the card from a Windows inside a virtual machine?

Should be, here’s someone that did it for the DP card firmware update.

[suliblian]

That’s encouraging Thanks!

[suliblian]

@blkhawk

…the power-loss of the USB-A card is caused by the 5v source being on on the Mainboard - the loss through the resistor is very limited.

As such a mode that turns it off during sleep and suspend states if there is no card in it would be very welcome.

Is TLP’s USB autosuspend not effective here?

[blkhawk]

@suliblian

Is TLP’s USB autosuspend not effective here?

Autosuspend doesn’t enter into it I think - there is no “device” to suspend. To signal the device you need to have 5v on the port and thats what causes the power draw even with “nothing” in there.

[Brendan_Van_Hook]

@suliblian

Is it possible to flash the card from a Windows inside a virtual machine?

I can confirm that I did the mod and flashed it from inside a Windows virtual machine.

[suliblian]

@Brendan_Van_Hook

I can confirm that I did the mod and flashed it from inside a Windows virtual machine.

Thank you, too!

Now I am very sure that if it goes wrong it will be my fault.