Manjaro Arm has been working pretty well for me so far on my Pinebook Pro. I installed in January without X, opting for Wayland and Sway. In April, my System stopped getting updates, so I was stuck on linux-pinebookpro-56 iirc. Two days ago, I changed the Mirrors to the correct ones and updated everything at once.
This worked kinda fine, except that now, on linux-58 mainline, USB-C DP-Altmode with my USB-C to HDMI adapter has stopped working.
When I use Sway on Wayland,
swaymsg -t get_outputs only shows the internal Display adapter eDP-1. On Gnome with X,
xrandr also shows DP-1, but always lists it as “Disconnected”.
It definitely is not a hardware fault, booting Kali Linux from an SD-card worked fine with an external display.
dmesg -w only shows the USB-Billboard-device being recognized and one other line:
cdn-dp fec00000.dp: [drm:cdn_dp_pd_event_work [rockchipdrm]] Not connected. Disabling cdn
Does anyone have a clue what I could do to fix this behaviour? I don’t know whether the Kernel is at fault here, because linux 5.7.1 from Kali Linux worked fine and theoretically, this issue with the DP-Altmode not working should have been resolved, according to this discussion.
It would be really great to find a workaround of some kind, because I am kind of dependent on using an external monitor for my work.
This seems to be a known problem, as mentioned in this thread.
I guess I will see whether I can downgrade my kernel to linux 5.7
It’s a known issue with the upgrade to kernel 5.8 and has been addressed with the developers already: [ARM Stable Update] 2020-08-13 - Bitwarden, Plasma, SystemD and Kernels
every single up-to-date pinebook pro user has this problem right now. Pretty huge.
Luckily, i found out a way to downgrade to the old kernel, in case you don’t have an old kernel flying around your hard drive.
type in this command in the command line / console:
sudo pacman -U http://manjaro.mirror.serversaustralia.com.au/arm-stable/core/aarch64/linux-aarch64-5.7.8-1-aarch64.pkg.tar.xz http://manjaro.mirror.serversaustralia.com.au/arm-stable/core/aarch64/linux-aarch64-headers-5.7.8-1-aarch64.pkg.tar.xz
Is downloads and installs the previous kernel and headers. Works atm.
Have a good day.
I don’t thing there is
linux-aarch64 available in the repo anymore.
To solve DP-Alt mode for users we have decided to maintain
linux-pinebookpro until we have dp-alt mode working on
Users can update the system and install
sudo pacman -Syyu linux-pinebookpro linux-pinebookpro-headers
For those who don’t want to use dp-alt mode can stay on
Hi, i just tested it. It’s still available since the server is out of sync atm.
Yes this mirror is out of sync, good observation, but some time it will sync that is the reason we have brought back the old package, I will check with the team and see if we can use
linux-aarc64-5.7.8 as long as dp-alt mode works on it.
Thanks for the support.
@spikerguy thank you for the info. It fixed my usb-c out on my pinebook pro. The people on these forums are great.
Thanks for confirming that alt-mode worked on
linux-pinebookpro to 5.7.12 by using the
Currently posting from PBP over USB-C Hdmi output, Next will try to bump it to 5.7.14 over the weekend.
We can close this thread with a solution.
Thank everyone for supporting Manjaro ARM Project.