= Building Linux 7.2.2 with AMDGPU Interlaced Support (RX 6600 XT / DCN)

This guide applies only the necessary patch for interlaced modes on modern AMDGPU (DCN2/DCN3/DCN4), such as the RX 6600 XT.

1. Download Kernel Source

<syntaxhighlight lang="bash"> cd ~ wget https://cdn.kernel.org/pub/linux/kernel/v7.x/linux-7.2.2.tar.xz tar -xf linux-7.2.2.tar.xz cd linux-7.2.2 </syntaxhighlight>

2. Download the Interlaced Patch

<syntaxhighlight lang="bash"> wget https://raw.githubusercontent.com/D0023R/linux_kernel_15khz/master/linux-7.2/03_linux_15khz_dcn1_dcn2_dcn3_dcn4_interlaced_mode_fix.patch </syntaxhighlight>

3. Apply the Patch

<syntaxhighlight lang="bash"> patch -p1 < 03_linux_15khz_dcn1_dcn2_dcn3_dcn4_interlaced_mode_fix.patch </syntaxhighlight>

4. Configure the Kernel

<syntaxhighlight lang="bash"> cp /boot/config-$(uname -r) .config make olddefconfig </syntaxhighlight>

(Optional) Add a custom version string:

<syntaxhighlight lang="bash"> scripts/config --set-str LOCALVERSION "-interlace" </syntaxhighlight>

5. Build

<syntaxhighlight lang="bash"> make -j$(nproc) </syntaxhighlight>

Or create Debian packages:

<syntaxhighlight lang="bash"> make -j$(nproc) bindeb-pkg </syntaxhighlight>

6. Install

<syntaxhighlight lang="bash"> sudo make modules_install sudo make install </syntaxhighlight>

Or with packages:

<syntaxhighlight lang="bash"> sudo dpkg -i ../linux-image-*.deb ../linux-headers-*.deb </syntaxhighlight>

Update bootloader:

<syntaxhighlight lang="bash"> sudo update-initramfs -u sudo update-grub </syntaxhighlight>

Reboot and select the new kernel.

Notes

• This patch enables interlace_allowed on AMDGPU DCN connectors and removes the temporary interlacing block.
• No 15 kHz / low-dotclock modes are added.
• After reboot, test interlaced modes with xrandr or your preferred tool.

= Building Linux 7.2.2 with AMDGPU Interlaced Support (RX 6600 XT / DCN)

This guide applies only the necessary patch for interlaced modes on modern AMDGPU (DCN2/DCN3/DCN4), such as the RX 6600 XT.

1. Download Kernel Source

<syntaxhighlight lang="bash"> cd ~ wget https://cdn.kernel.org/pub/linux/kernel/v7.x/linux-7.2.2.tar.xz tar -xf linux-7.2.2.tar.xz cd linux-7.2.2 </syntaxhighlight>

2. Download the Interlaced Patch

<syntaxhighlight lang="bash"> wget https://raw.githubusercontent.com/D0023R/linux_kernel_15khz/master/linux-7.2/03_linux_15khz_dcn1_dcn2_dcn3_dcn4_interlaced_mode_fix.patch </syntaxhighlight>

3. Apply the Patch

<syntaxhighlight lang="bash"> patch -p1 < 03_linux_15khz_dcn1_dcn2_dcn3_dcn4_interlaced_mode_fix.patch </syntaxhighlight>

4. Configure the Kernel

<syntaxhighlight lang="bash"> cp /boot/config-$(uname -r) .config make olddefconfig </syntaxhighlight>

(Optional) Add a custom version string:

<syntaxhighlight lang="bash"> scripts/config --set-str LOCALVERSION "-interlace" </syntaxhighlight>

5. Build

<syntaxhighlight lang="bash"> make -j$(nproc) </syntaxhighlight>

Or create Debian packages:

<syntaxhighlight lang="bash"> make -j$(nproc) bindeb-pkg </syntaxhighlight>

6. Install

<syntaxhighlight lang="bash"> sudo make modules_install sudo make install </syntaxhighlight>

Or with packages:

<syntaxhighlight lang="bash"> sudo dpkg -i ../linux-image-*.deb ../linux-headers-*.deb </syntaxhighlight>

Update bootloader:

<syntaxhighlight lang="bash"> sudo update-initramfs -u sudo update-grub </syntaxhighlight>

Reboot and select the new kernel.

Notes

• This patch enables interlace_allowed on AMDGPU DCN connectors and removes the temporary interlacing block.
• No 15 kHz / low-dotclock modes are added.
• After reboot, test interlaced modes with xrandr or your preferred tool.