New Rock5 - First steps, first problems: random reboots and ubuntu updates not working

Hi there!
I just onboxed and setup my new rock5: sooo sweet!
I managed to get ubuntu installed (official radxa image) onto my nvme and its booting from it.
SPI-IMAGE: rock-5b-spi-image-g49da44e116d.img
LOADER: rk3588_spl_loader_v1.08.111.bin
config: rock-5b-spinor.cfg from rkdev v2.96
ubuntu: rock-5b-ubuntu-focal-server-arm64-20221031-1328-gpt.img

Also installed the fan control for the “stock” fan:
fan is spinning and doing what its supposed to do.

However, i am experiencing a very annoying issue: The device randomly reboots.

  • Powersupply and cable is from allnet, so must be appropriate.
  • I monitored temps: thats not it: last refresh in ssh shows 34.2 °C for all temp sensors.

Also, there seem to be problems with the apt repository from radxa:

Can somebody help?

Kind regards

After reboot there is a kernel message on console:
rk-pcie fe170000: PCIe Link Fail
rk-pcie fe170000: failed to initialize host

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I cannot help much but I have the same kind of error messages but with another address:
2022-11-25T11:16:40.160491+00:00 rock-5b-001 kernel: [ 7.123212] rk-pcie fe150000.pcie: PCIe Link Fail 2022-11-25T11:16:40.160493+00:00 rock-5b-001 kernel: [ 7.123219] rk-pcie fe150000.pcie: failed to initialize host
All working fine for me.

export DISTRO=focal-stable
wget -O -$DISTRO/public.key | sudo apt-key add -
sudo apt-get update
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