Source: linux Severity: normal X-Debbugs-Cc: [email protected] Dear Maintainer,
Issue: The Intel Arc Pro B60 (Battlemage, device 8086:e211) has some issues with fan control. After the system has been running for a while, the fans spin up and do not spin back down. The driver logs show: xe 0000:04:00.0: [drm] Can't init xe mei late bind missing mei component The fan control version shows as: $ cat /sys/bus/pci/drivers/xe/0000:04:00.0/lb_fan_control_version 0.0.0.0 Root cause(my working theory): The xe driver requires CONFIG_INTEL_MEI_LB to communicate with the load board microcontroller that manages fan control and voltage regulation. This option was added in Linux 6.19 but is currently disabled in Debian's kernel config: $ grep INTEL_MEI_LB /boot/config-$(uname -r) # CONFIG_INTEL_MEI_LB is not set Setting CONFIG_INTEL_MEI_LB=m should allow the xe driver to initialize the load board via the MEI interface at runtime, enabling proper fan control and voltage regulation without requiring firmware flashing or a reboot. This is similar to bug #1028463 which added CONFIG_INTEL_MEI_GSC for Intel Arc A-series support. Please also consider backporting to trixie-backports, as this affects users running the current stable release with backports kernel. -- System Information: Debian Release: 13.4 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 6.19.14+deb13-amd64 (SMP w/32 CPU threads; PREEMPT) Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled
