USB-C Dock and HDMI, revison 1.2 (Modded)
I have a hardware modified Braveheart as per I flashed the anx7688 using the firmware from megous at I basically get the same message from dmesg:

[18985.913240] anx7688 0-0028: dp state changed to 0x00
[19026.231163] anx7688 0-0028: dp state changed to 0x03

Not sure how the usb c alternate mode is switched to.

There appears to be a kernel module which isn't modprobed  - /lib/modules/5.7-pinephone/kernel/drivers/usb/typec/altmodes/typec_displayport.ko.

There's some kernel doco here which doesn't really clear things up (not that I really understand it anyway) -

I saw that Marrtijn Braam from postmarketos did a youtube video showing it working but I can't find any doco from him on this wiki or his blog. It looks like the postmarketos people have looked at packaging up the firmware so maybe they are sorting out the whole issue. I have been using Mobian and have no idea what they are up to in this are. 

It looks like, if there is any doco on this, it hasn't been put anywhere easy to find. If it is as simple as plugging in a usb c dock and it all should work, why is it not working for some people (including me)? If someone is aware of all the caveats/gotchas, that coulsd include hardware version etc., could they please enumerate them here.


Messages In This Thread
RE: USB-C Dock and HDMI, revison 1.2 (Modded) - by hetp - 07-17-2020, 10:21 PM

Possibly Related Threads…
Thread Author Replies Views Last Post
  no HDMI (DP) Output over Dock vuj 6 505 09-06-2021, 03:05 AM
Last Post: vuj
  Ethernet through the dock? Diagon 22 4,774 01-25-2021, 01:05 PM
Last Post: zborgerd
  screen goes blank when I insert pinephone dock, or usb-a to usb-c adaptor rp3 3 956 01-12-2021, 05:06 AM
Last Post: rp3
  HDMI on Mobian sundog 2 1,548 09-08-2020, 09:19 AM
Last Post: sundog

Forum Jump:

Users browsing this thread: 1 Guest(s)