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Add hardware fix for Intel WiFi 7 EHT on Panther Lake (#5106)

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Detect Intel BE200/BE211 WiFi cards and disable WiFi 7 (EHT) via
modprobe config. The iwlwifi driver has broken EHT RX adaptation
causing APs to drop to MCS 0, making WiFi unusable.
Falling back to WiFi 6 (HE) restores full performance.

Temporary fix: remove when Intel fixes the firmware/driver.

Signed-off-by: Spencer Bull <Spencer.Bull@Dell.com>
Co-authored-by: David Heinemeier Hansson <david@hey.com>
This commit is contained in:
Spencer Bull
2026-03-26 08:36:41 +01:00
committed by GitHub
co-authored by David Heinemeier Hansson
parent 5d4e1032ca
commit f55c7e9ab5
2 changed files with 17 additions and 1 deletions
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install/config/all.sh
+2 -1
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@@ -34,13 +34,14 @@ run_logged $OMARCHY_INSTALL/config/hardware/printer.sh
run_logged $OMARCHY_INSTALL/config/hardware/usb-autosuspend.sh
run_logged $OMARCHY_INSTALL/config/hardware/ignore-power-button.sh
run_logged $OMARCHY_INSTALL/config/hardware/nvidia.sh
run_logged $OMARCHY_INSTALL/config/hardware/vulkan.sh
run_logged $OMARCHY_INSTALL/config/hardware/intel/video-acceleration.sh
run_logged $OMARCHY_INSTALL/config/hardware/intel/lpmd.sh
run_logged $OMARCHY_INSTALL/config/hardware/intel/thermald.sh
run_logged $OMARCHY_INSTALL/config/hardware/intel/ipu7-camera.sh
run_logged $OMARCHY_INSTALL/config/hardware/vulkan.sh
run_logged $OMARCHY_INSTALL/config/hardware/intel/fix-ptl-display.sh
run_logged $OMARCHY_INSTALL/config/hardware/intel/ptl-kernel.sh
run_logged $OMARCHY_INSTALL/config/hardware/fix-intel-wifi7-eht.sh
run_logged $OMARCHY_INSTALL/config/hardware/framework/fix-f13-amd-audio-input.sh
run_logged $OMARCHY_INSTALL/config/hardware/fix-bcm43xx.sh
run_logged $OMARCHY_INSTALL/config/hardware/apple/fix-spi-keyboard.sh
install/config/hardware/fix-intel-wifi7-eht.sh
+15
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@@ -0,0 +1,15 @@
# Temporary fix for Dell XPS 14/16 on Panther Lake
# Disable WiFi 7 (EHT/802.11be) on Intel BE200/BE211 cards
# The iwlwifi driver has a broken EHT RX data path — APs drop to MCS 0 NSS 1
# when EHT is negotiated, making WiFi unusable. Disabling EHT falls
# back to WiFi 6 (HE/802.11ax) which works at full speed.
# This should be removed when Intel fixes the firmware/driver.
if lspci -nn | grep -qE '\[8086:(e440|272b)\]'; then
sudo tee /etc/modprobe.d/iwlwifi-disable-eht.conf << 'EOF'
# Temporary fix Dell XPS 14/16 on Panther lake
# Disable WiFi 7 (EHT) on Intel BE200/BE211 — broken RX rate adaptation
# Remove this file when fixes land in the iwlwifi EHT data path
options iwlwifi disable_11be=Y
EOF
fi