Hogwarts Legacy (EMPRESS release) not starting on Steam Deck (fixed)

If you’ve downloaded the Empress release of Hogwarts and it won’t start on your Steam Deck, use the following to fix:

• Goto Desktop Mode

• Open Terminal

• Create a backup of grub with “sudo cp /etc/default/grub /etc/default/grub.bak”

• Open grub with “sudo nano /etc/default/grub”

• Find the line GRUB_CMDLINE_LINUX_DEFAULT

• add clearcpuid=514 to the string inside the quotes
  example:

  GRUB_CMDLINE_LINUX_DEFAULT=”loglevel=3 quiet splash plymouth.ignore-serial-consoles tsc=directsync module_blacklist=tpm
  log_buf_len=4M amd_iommu=off amdgpu.gttsize=8128 spi_amd.speed_dev=1 audit=0 fbcon=vc:4-6 fbcon=rotate:1 clearcpuid=514″

  Add it at the end of the line after fbcon=rotate:1 but make sure it’s still within the quotes.

• Save the file with ctrl+O

• Update grub settings with “sudo update-grub”

• Restart with sudo shutdown now -r

Along with the fix above, I also have the following set for Hogwarts Legacy EMPRESS release:

• Compatibility: Proton Experimental

UPDATE: This fix only seems to work when you’re in Desktop Mode on the Steam Deck.  When you try to boot Hogwarts in Gaming Mode, the game will crash after the disclaimer screen.  This Reddit thread has all the optimizations needed to run this game smoothly on the Steam Deck.  I will be trying the increase in VRAM to 4GB in order to get it working in Gaming Mode.