Unable to charge

MNT Pocket Reform
29

@SpaceLizard @Savasten i made a workaround today that should get you out of this buggy firmware that turned off your display.

Preparations:

  • you need some way to get a shell on your pocket, for example over HDMI, SSH or in worst case UART console.
  • sudo apt update
  • sudo apt install fwupd
  • edit the file /etc/fwupd/fwupd.conf, add the line OnlyTrusted=false
  • wget https://source.mnt.re/reform/reform-tools/-/jobs/7408/artifacts/raw/reform2-lpc-dkms_1.65_all.deb
  • sudo dpkg -i reform2-lpc-dkms_1.65_all.deb
  • then reboot
  • after reboot, you should see a file brightness in /sys/bus/spi/drivers/reform2_lpc/spi1.0. i have a rk3588 pocket here at the moment so it could be that it’s not called spi1.0 but similar on your pocket.
  • download the bugfixed firmware, i.e. wget -O sysctl.cab https://source.mnt.re/reform/pocket-reform/-/jobs/7370/artifacts/raw/pocket-reform-sysctl-fw/build/sysctl.cab
  • become root, i.e. sudo su and then echo 0 > /sys/bus/spi/drivers/reform2_lpc/spi1.0/brightness (making sure the sp1.0 is correct which you found out earlier). a simple sudo won’t work for this command because the > will be interpreted by the surrounding shell which is not affected by sudo.
  • this previous step should work around the problem of an attempted firmware update immediately resetting the machine.
  • do the update: fwupdtool install --allow-older sysctl.cab
  • hopefully it should succeed and after reboot you should have your display back up.

I apologize for the inconvenience this bug caused for you.

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