Solution for Solus given by IA
# 1. Delete all old configuration files (there are currently a lot of duplicates)
sudo rm -f /etc/kernel/cmdline.d/*.conf
# 2. Create a custom command line with TPM masking in the initrd
echo 'root=PARTUUID=4e336a05-d9c8-400b-9e0a-40f703df7267 rd.vconsole.keymap=fr rd.vconsole.font=ter-v32b rw plymouth.use-simpledrm resume=UUID=ef4cff99-e6c2-46b2-a05c-f2adcee1f47e libata.force=1.5Gbps,noncq libahci.ignore_sss=1 libata.noacpi=1 modprobe.blacklist=tpm_tis,tpm_crb rd.systemd.mask=dev-tpmrm0.device rd.systemd.mask=tpm2.target nosplash noquiet' | sudo tee /etc/kernel/cmdline.d/99_fix.conf
# 3. Do
sudo clr-boot-manager update