Broken usb-c to hdmi with kernel 5.18+
#4
(10-01-2022, 04:42 PM)mjrr15 Wrote: Well, I risked the downgrade to 5.15 and broke the booting sequence. Found a way to recover though using an SD card with Armbian. Mounted EMMC /boot after booting Armbian.

Files in EMMC /boot were named *linux515* renamed to *linux* and copied vmlinuz-linux to Image (as I could not create a symbolic link). Then saw dtbs/rockchip/rk3399-pinebook-pro.dtb was missing so copied it from the Armbian /boot/dtb/rockchip folder (after creating the folder).

drwxr-xr-x  3 root root 8.0K Oct  1 17:18 dtbs
drwxr-xr-x  2 root root 8.0K Oct  1 17:05 extlinux
-rw-r--r--  1 root root 167K Jul 20 04:01 idbloader.img
-rw-r--r--  1 root root  30M Oct  1 17:05 Image
-rw-r--r--  1 root root  17M Oct  1 16:09 initramfs-linux-fallback.img
-rw-r--r--  1 root root 8.1M Oct  1 16:08 initramfs-linux.img
-rw-r--r--  1 root root   30 Sep 23 09:44 linux-aarch64.kver
-rw-r--r--  1 root root 978K Jul 20 04:01 u-boot.itb
-rw-r--r--  1 root root  30M Oct  1 16:08 vmlinuz-linux

All these details I found in the EMMC "/boot/extlinux/extlinux.conf" file:

LABEL Manjaro ARM
KERNEL /Image
FDT /dtbs/rockchip/rk3399-pinebook-pro.dtb
APPEND initrd=/initramfs-linux.img console=ttyS2,1500000 root=PARTUUID=1eeb7b54-686c-447f-80a7-b57c8d7b3345 rw rootwait audit=0 splash plymouth.ignore-serial-consoles


@mjrr15 

Kernel 5.15 from Armbian has the same issue. Eventually I ended up installing TwisterOS and the image comes with kernel 5.10 so there is no HDMI issue there. Give it a try.

Now, it would be nice to find a Manjaro or Arch image that has these older kernel versions available.
Ideally this should be fixed though as it's such basic functionality and it has been broken for a long time.
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Messages In This Thread
Broken usb-c to hdmi with kernel 5.18+ - by rfm83 - 09-26-2022, 12:04 PM
RE: Broken usb-c to hdmi with kernel 5.18+ - by rfm83 - 10-02-2022, 01:33 PM

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