Morphius: errors on boot on several different distros, with several different kernel versions

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22

not a bad idea tbh

23

Oooh, this might’ve been my problem too, at Crashes on v4.22 (2023.12.24) - Yoga C13 running Linux.

I got the same UART problem. Mine also has no fingerprint sensor

24

Interesting.

@MrChromebox any ideas how we could add FPMCU probing in fwconfig? You know more about AMD platforms, so you might have an idea

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you’d have to add a field to FW_CONFIG, then program the eeprom, then add the probe statement. I’m not sure there’s a good way for me to detect in firmware currently

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@elly How would one normally do that for use with an installer live disc?

@thinkpadworship, in what /etc filesystem did you create the new modprobe configuration file? I don’t find any etc directory on any of the three filesystems on my Pop!_OS installation USB drive, which I created from pop-os_22.04_amd64_intel_38.iso.

I, too, have a Thinkpad C13 (morphius) without fingerprint reader, and reach a black screen with only the pointer visible, but moving as if the entire display is upside down. I installed the latest RW_LEGACY firmware from MrChromebox yesterday, which appears to be Google_Morphius.13434.356.0.

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Boot with following options appended to cmdline:
iommu=pt modprobe.blacklist=cros-ec-uart

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Just for clarification if somebody else stumbles upon this

blacklisting cros-ec-uart is the solution but not blacklisting it in cmdline in /etc/default/grub (and then using grub2-mkconfig -o /boot/grub/grub.cfg to apply the changes)

The Blacklisting has to be done in the etc/modprobe.d/ directory. As described by @thinkpadworship

then I used sudo dracut -f (or similar tools depending on the OS) to regenerate the initramfs and then reboot.

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Still occurring? Have run run updates on the firmware recently? Still happening after that or have you blacklisted the cros ec as mentioned above?

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Mine also has this problem and doesn’t have a fingerprint sensor. My keyboard layout is US. By any chance is yours also US? perhaps this is a thing with the US variants.

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It may not be helpful feedback, but I have a Morphius with the US layout and never had this issue.

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The keyboard layout was US but the person I bought it from told me it was a model from the Netherlands. Given that blacklisting the kernel module for the fingerprint sensor fixes it I’d guess it’s mainly a fingerprint sensor issue and nothing to do with the region.

33

How did it end up going, or are we good to close?