"sda5 contains a crypto_LUKS filesystem" Can you boot from a live CD (Ubuntu, Trisquel whatever..) and run :
lsblk then : vgdisplay Paste the output here.
"sda5 contains a crypto_LUKS filesystem" Can you boot from a live CD (Ubuntu, Trisquel whatever..) and run :
lsblk then : vgdisplay Paste the output here.