{"record":{"id":"0818f8be7557f92a","repo":"svenstaro/genact","slug":"possibly-missing-firmware-for-module-driver","errorCode":null,"errorMessage":"Possibly missing firmware for module: {driver}","messagePattern":"Possibly missing firmware for module: (.+?)","errorType":"console","errorClass":null,"httpStatus":null,"severity":"warning","filePath":"src/modules/mkinitcpio.rs","lineNumber":89,"sourceCode":"        \"/boot/initramfs-{preset}{suffix}.img\",\n        preset = preset,\n        suffix = if mode == \"default\" {\n            \"\".to_string()\n        } else {\n            format!(\"-{mode}\")\n        }\n    );\n\n    msg2(format!(\"-k /boot/vmlinuz-{preset} -c /etc/mkinitcpio.conf -g {image}\",).as_ref()).await;\n    msg1(format!(\"Starting build: {os_release}\").as_ref()).await;\n\n    for hook in hooks {\n        msg2(format!(\"Running build hook: [{hook}]\").as_ref()).await;\n        csleep(rng.random_range(50..1000)).await;\n\n        if *hook == \"block\" && mode == \"fallback\" {\n            for driver in drivers {\n                warn(format!(\"Possibly missing firmware for module: {driver}\").as_ref()).await;\n            }\n        }\n\n        if appconfig.should_exit() {\n            return;\n        }\n    }\n\n    msg1(\"Generating module dependencies\").await;\n    csleep(rng.random_range(200..500)).await;\n\n    msg1(format!(\"Creating {zip}-compressed initcpio image: {image}\",).as_ref()).await;\n    csleep(rng.random_range(500..2500)).await;\n\n    msg1(\"Image generation successful\").await;\n}\n\npub struct Mkinitcpio;","sourceCodeStart":71,"sourceCodeEnd":107,"githubUrl":"https://github.com/svenstaro/genact/blob/858be63ad272ce0d451d2a7f6c075c15998c12ec/src/modules/mkinitcpio.rs#L71-L107","documentation":"During build(), when the 'block' hook runs in fallback mode, the tool emits a warning for each driver it detected, saying firmware may be missing. It is not a hard failure: mkinitcpio warns that the initramfs includes kernel modules whose userspace firmware blobs may not be installed, so the hardware may not work at boot. This mimics the classic mkinitcpio/udevadmq warning shown in the Arch Linux boot output.","triggerScenarios":"Calling run()/build() in fallback mode while the hook list contains 'block' and the detected driver list is non-empty — every detected driver gets one warn() line regardless of whether firmware is actually installed.","commonSituations":"Simulated/animated mkinitcpio boot screens (this looks like a fake boot renderer, e.g. archinstall/fastfetch-style demo); real-world equivalent is building an initramfs for hardware like radeon/amdgpu/nouveau or WiFi chips whose linux-firmware package is missing.","solutions":["Install the matching firmware package (e.g. `pacman -S linux-firmware`, or the specific package like linux-firmware-amdgpu)","Blacklist/drop the unneeded module so its driver is not included in the image","Ignore the warning if the hardware in question is not used (it is only a warning, not an error)","In fallback mode specifically, verify which drivers land in the image and trim the MODULES= array in mkinitcpio.conf"],"exampleFix":"// before (warn for every driver in fallback mode)\nif *hook == \"block\" && mode == \"fallback\" {\n    for driver in drivers {\n        warn(format!(\"Possibly missing firmware for module: {driver}\").as_ref()).await;\n    }\n}\n// after (only warn when firmware file is actually absent)\nif *hook == \"block\" && mode == \"fallback\" {\n    for driver in drivers {\n        if !firmware_installed(driver) {\n            warn(format!(\"Possibly missing firmware for module: {driver}\").as_ref()).await;\n        }\n    }\n}","handlingStrategy":"validation","validationCode":"// Verify firmware availability before the build step\nfor driver in drivers {\n    if !Path::new(&format!(\"/lib/firmware/{}\n\", driver)).exists()\n        && command_output(\"modinfo\", &[\"-F\", \"firmware\", driver]).is_empty() {\n        eprintln!(\"firmware missing for module: {driver}\");\n    }\n}","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Always install linux-firmware (or distro equivalent) alongside the kernel","Keep MODULES= in mkinitcpio.conf minimal and intentional","Treat these warnings as informational — confirm the specific hardware works before blacklisting","Regenerate the initramfs after firmware package upgrades"],"tags":["firmware","kernel-modules","mkinitcpio","boot","linux"],"backgroundTag":"missing-dependency","analyzedSha":"858be63ad272ce0d451d2a7f6c075c15998c12ec","analyzedAt":"2026-09-08T03:43:15.281Z","contentChangedAt":"2026-09-08T03:43:15.281Z","schemaVersion":2},"datasetVersion":"2026-09-15T23:17:13.987Z"}