Crouton not working on Thorium OS V120.0.6099.276 - Error: cannot create /sys/kernel/debug/dri/drm_master_relax: Operation not permitted

**Issue Description:**
Crouton not working on Thorium OS V120.0.6099.276. When attempting to run Crouton, the following error was displayed: "/tmp/crouton-installer-cache/crouton.hTC/host-bin/enter-chroot: 152: cannot create /sys/kernel/debug/dri/drm_master_relax: Operation not permitted."

**Steps to Reproduce:**
1. Install Crouton on Thorium OS V120.0.6099.276.
2. Attempt to run Crouton and encounter the error message.

**Expected Behavior:**
Crouton should run successfully without encountering the "Operation not permitted" error.

**Additional Information:**
- Operating System: Thorium OS V120.0.6099.276
- Error Message: "/tmp/crouton-installer-cache/crouton.hTC/host-bin/enter-chroot: 152: cannot create /sys/kernel/debug/dri/drm_master_relax: Operation not permitted"

Start by reproducing the failure on Thorium OS V120.0.6099.276 and inspect the enter-chroot entry point at line 152, where the reported write to /sys/kernel/debug/dri/drm_master_relax fails. Compare the environment and permissions involved with a working Crouton setup. Done means Crouton runs successfully without the Operation not permitted error.

Written by the indexing model from the issue text.