The guide by tuxedo tells you how to disable `PSR` which stands for panel-self-refresh.
But psr is a very useful feature to conserve.
Thanks to the reddit user 909876b4-cf8c I went down the rabbit hole to figure out what tuxedos custom solution actually does. They force psr version 1. link
I'm booting with i915.enable_psr=0
And after calling $ echo 0x3 > /sys/kernel/debug/dri/0/i915_edp_psr_debug
my display is still working fine and psr is enabled
cat /sys/kernel/debug/dri/0/i915_edp_psr_status
Sink support: yes [0x03]
PSR mode: PSR1 enabled
Source PSR ctl: enabled [0x81f00ee6]
Source PSR status: IDLE [0x04010000]
Busy frontbuffer bits: 0x00000000Optional: For a flicker free experience follow the guide in https://bennis-blog.de/2021/11/19/pop_os-nvidia-on-the-infinitybook-pro-14-gen6/ to add the kernel parameter `i915.enable_psr=0`
The actual fix
Create a systemd unit file to enable psr version 1.
$sudo nano /etc/systemd/system/infinitybook_psr_fix.service
# ---
[Service]
Type=oneshot
ExecStart=bash -c 'echo 0x3 > /sys/kernel/debug/dri/0/i915_edp_psr_debug'
[Install]
WantedBy=graphical.target
# If graphical.target doesn't work for you
# WantedBy=multi-user.target
# ---
$sudo systemctl daemon-reload
$sudo systemctl enable infinitybook_psr_fix.service
$sudo systemctl start infinitybook_psr_fix.service
# Confirm that it worked by calling
sudo cat /sys/kernel/debug/dri/0/i915_edp_psr_status
This fix might resolve the screen flickering for all HDPI displays on Alder Lake (12th gen Intel)