Sorry @Jieren_Zheng - I think you misunderstood my post and I am going to correct it there. This is NOT an dual HDMI output which can be hooked up to the Framework Laptop. Its a display controller for Frameworks Display Panel. So you can hook up the display directly to it instead of using the other controllers with USB-C or DisplayPort. I think there is no solution yet to use the Framework Laptops internal eDP port except the custom cable of Framework to directly attach the Display to - even though it should be fairly easy to just use this Laptop eDP port to allow for a normal, external DisplayPort port/cable.
I don’t know if I understand this correctly, but eDP is just DP with some additional voltage wires + i2c and I guess the only needed part would be an adapter cable which does transfer the internal (well documented) physical port to an DisplayPort port with the correct wiring and then it could work. But I have not tried that.
I don’t know if this is still of interest to you, but I found these neat little boards sold by Geekworm. They seem to be available on AliExpress.
Given the reviews and the photographic evidence, I think it might work. However, I won’t be able to test them until I’m able to procure an eDP to mainboard cable from somewhere. Bonus, they support 1, 2 and 4 lanes modes, so there’s room for experimentation. The board even gets its power from the eDP cable !
Looking real cool to me @iLambda - nice find!
But yeah - I am still really looking for a spare eDP cable for just wiring up my replacement display to my framework laptop… and it looks like one cannot those spare parts without buying a display. I really hope someone comes along somewhen with a spare part for this cable with even an extended length for custom builds…
I couldn’t even source the connector somewhere that didn’t require to ask for a quote for a prohibitive amount of parts. But, the search continues !
As soon as I’m financially able to, I’m gonna source one of these boards and try to see what it takes to make an updated design, that fits maybe a little better with the mainboard connector. Having the possibility to bypass software backlight control, use eDP power lines to power a tiny screen, and all these things seem like they could be interesting for people making specialized DIY builds with the mainboard, but not wanting to use a whole USB-C port for IT.
Keeping you all updated, probably in a separate thread.
Would it be possible to purchase edp cables? I got lucky and bought a spare that someone had for my Thinkpad conversion project, but it would be great to be able to buy some from the site.
Great find! Will be really useful for development purposes when I get around to part sourcing and injecting the signals from a digitizer daughterboard directly into a 40-pin.
I think this little board is really promising for potentially repurposing spare display kits as portable monitors! Perhaps in a slimmed down version of the Framework AIO that would be able to slip into a bag or clip on top of a regular desktop monitor?
Just received this, unfortunately no spare Framework display to test it with. Seems however it does not include a MUX, and the red power LED only turns on in one cable orientation. Parts look very similar to https://static-community.frame.work/original/2X/6/6f72d13ee0acdb311285509198becbe6938603f9.jpeg without the screen, so seems they simply exchanged socket types without actually making it a proper receptacle device
yeah, sadly. In USB-C, a DisplayPort (or USB3) device with a USB-C socket requires a mux for handling high-speed signal rotation, and a device with a USB-C plug does not. This board has a socket, but no mux - seems like they went from one to the other in a thoughtless way. It looks to me that the board should work for people still, provided you plug the cable in a certain orientation and don’t hope that the other orientation works. Also, hoping that the DisplayPort signals will work alright with an overall longer cable - no idea if they accounted for that!
