Acer Aspire 5 Laptop Keyboard backlight not working

Hello,

My laptops keyboard backlight is not working, it looks like the driver or device is missing. Does anyone know how I can get it working again ?

According to this article it should be working.
Arch wiki - Acer Aspire 5 A515-51G-5072

Laptop: Acer Aspire 5 (A515-51G-50GG)
OS: Garuda Linux

[🔴] × ls /sys/class/leds/
lrwxrwxrwx 0 root 11 Oct 17:32  input6::capslock -> ../../devices/platform/i8042/serio0/input/input6/input6::capslock
lrwxrwxrwx 0 root 11 Oct 17:32  input6::numlock -> ../../devices/platform/i8042/serio0/input/input6/input6::numlock
lrwxrwxrwx 0 root 11 Oct 17:32  input6::scrolllock -> ../../devices/platform/i8042/serio0/input/input6/input6::scrolllock
╰─λ brightnessctl -l
Available devices:
Device 'intel_backlight' of class 'backlight':
Current brightness: 825 (55%)
Max brightness: 1500

Device 'input6::numlock' of class 'leds':
Current brightness: 0 (0%)
Max brightness: 1

Device 'input6::scrolllock' of class 'leds':
Current brightness: 1 (100%)
Max brightness: 1

Device 'input6::capslock' of class 'leds':
Current brightness: 0 (0%)
Max brightness: 1
inxi -Faz

System:    Kernel: 5.14.8-zen1-1-zen x86_64 bits: 64 compiler: gcc v: 11.1.0  
parameters: BOOT_IMAGE=/@/boot/vmlinuz-linux-zen root=UUID=ab1c6b05-cea8-4565-b4ca-117876bb2eaa  
rw [email protected] quiet
cryptdevice=UUID=bb058b91-e6c9-486e-a49d-57039c2c0156:luks-bb058b91-e6c9-486e-a49d-57039c2c0156
root=/dev/mapper/luks-bb058b91-e6c9-486e-a49d-57039c2c0156 splash rd.udev.log_priority=3
vt.global_cursor_default=0 systemd.unified_cgroup_hierarchy=1
resume=/dev/mapper/luks-69215ea9-dd85-46aa-ad37-aa3effd3b358 loglevel=3
Desktop: KDE Plasma 5.22.5 tk: Qt 5.15.2 info: latte-dock wm: kwin_x11 vt: 1 dm: SDDM  
Distro: Garuda Linux base: Arch Linux  
Machine:   Type: Laptop System: Acer product: NC-A515-51G-50GG v: V1.13 serial: <filter>  
Mobo: KBL model: Charmander_KL v: V1.13 serial: <filter> UEFI: Insyde v: 1.13 date: 11/08/2017  
Battery:   ID-1: BAT1 charge: 44.5 Wh (100.0%) condition: 44.5/48.9 Wh (90.8%) volts: 16.9 min: 15.2  
model: COMPAL PABAS0241231 type: Li-ion serial: <filter> status: Full  
CPU:       Info: Quad Core model: Intel Core i5-8250U bits: 64 type: MT MCP arch: Kaby Lake note: check  
family: 6 model-id: 8E (142) stepping: A (10) microcode: EA cache: L2: 6 MiB  
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 28800  
Speed: 3250 MHz min/max: 400/3400 MHz Core speeds (MHz): 1: 3250 2: 3399 3: 2741 4: 3401  
5: 3400 6: 2473 7: 3268 8: 3400  
Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled  
Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable  
Type: mds mitigation: Clear CPU buffers; SMT vulnerable  
Type: meltdown mitigation: PTI  
Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via prctl and seccomp  
Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization  
Type: spectre_v2  
mitigation: Full generic retpoline, IBPB: conditional, IBRS_FW, STIBP: conditional, RSB filling  
Type: srbds mitigation: Microcode  
Type: tsx_async_abort status: Not affected  
Graphics:  Device-1: Intel UHD Graphics 620 vendor: Acer Incorporated ALI driver: i915 v: kernel  
bus-ID: 00:02.0 chip-ID: 8086:5917 class-ID: 0300  
Device-2: NVIDIA GP108M [GeForce MX150] vendor: Acer Incorporated ALI driver: nvidia v: 470.74  
alternate: nouveau,nvidia_drm bus-ID: 01:00.0 chip-ID: 10de:1d10 class-ID: 0302  
Device-3: Quanta HD Webcam type: USB driver: uvcvideo bus-ID: 1-7:4 chip-ID: 0408:a060  
class-ID: 0e02 serial: <filter>  
Display: x11 server: X.Org 1.20.13 compositor: kwin_x11 driver: loaded: modesetting,nvidia  
display-ID: :0 screens: 1  
Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2") s-diag: 582mm (22.9")  
Monitor-1: eDP-1 res: 1920x1080 hz: 60 dpi: 142 size: 344x194mm (13.5x7.6") diag: 395mm (15.5")  
OpenGL: renderer: Mesa Intel UHD Graphics 620 (KBL GT2) v: 4.6 Mesa 21.2.2 direct render: Yes  
Audio:     Device-1: Intel Sunrise Point-LP HD Audio vendor: Acer Incorporated ALI driver: snd_hda_intel  
v: kernel alternate: snd_soc_skl bus-ID: 00:1f.3 chip-ID: 8086:9d71 class-ID: 0403  
Sound Server-1: ALSA v: k5.14.8-zen1-1-zen running: yes  
Sound Server-2: JACK v: 1.9.19 running: no  
Sound Server-3: PulseAudio v: 15.0 running: no  
Sound Server-4: PipeWire v: 0.3.37 running: yes  
Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Acer Incorporated ALI  
driver: r8169 v: kernel port: 3000 bus-ID: 02:00.1 chip-ID: 10ec:8168 class-ID: 0200  
IF: enp2s0f1 state: down mac: <filter>  
Device-2: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter vendor: Lite-On  
driver: ath10k_pci v: kernel port: 3000 bus-ID: 03:00.0 chip-ID: 168c:0042 class-ID: 0280  
IF: wlp3s0 state: up mac: <filter>  
IF-ID-1: anbox0 state: down mac: <filter>  
Bluetooth: Device-1: Lite-On Qualcomm Atheros QCA9377 Bluetooth type: USB driver: btusb v: 0.8  
bus-ID: 1-5:3 chip-ID: 04ca:3015 class-ID: e001  
Report: bt-adapter ID: hci0 rfk-id: 3 state: down bt-service: enabled,running rfk-block:  
hardware: no software: yes address: <filter>
Drives:    Local Storage: total: 931.51 GiB used: 26.04 GiB (2.8%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/sda maj-min: 8:0 vendor: Western Digital model: WD10SPZX-21Z10T0 size: 931.51 GiB
block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s type: HDD rpm: 5400
serial: <filter> rev: 1A02 scheme: GPT
Partition: ID-1: / raw-size: 922.45 GiB size: 922.45 GiB (100.00%) used: 26.04 GiB (2.8%) fs: btrfs
dev: /dev/dm-0 maj-min: 254:0 mapped: luks-bb058b91-e6c9-486e-a49d-57039c2c0156
ID-2: /boot/efi raw-size: 260 MiB size: 256 MiB (98.45%) used: 706 KiB (0.3%) fs: vfat
dev: /dev/sda1 maj-min: 8:1
ID-3: /home raw-size: 922.45 GiB size: 922.45 GiB (100.00%) used: 26.04 GiB (2.8%) fs: btrfs
dev: /dev/dm-0 maj-min: 254:0 mapped: luks-bb058b91-e6c9-486e-a49d-57039c2c0156
ID-4: /var/log raw-size: 922.45 GiB size: 922.45 GiB (100.00%) used: 26.04 GiB (2.8%) fs: btrfs
dev: /dev/dm-0 maj-min: 254:0 mapped: luks-bb058b91-e6c9-486e-a49d-57039c2c0156
ID-5: /var/tmp raw-size: 922.45 GiB size: 922.45 GiB (100.00%) used: 26.04 GiB (2.8%) fs: btrfs
dev: /dev/dm-0 maj-min: 254:0 mapped: luks-bb058b91-e6c9-486e-a49d-57039c2c0156
Swap:      Kernel: swappiness: 133 (default 60) cache-pressure: 100 (default)
ID-1: swap-1 type: zram size: 7.64 GiB used: 2.2 MiB (0.0%) priority: 100 dev: /dev/zram0
ID-2: swap-2 type: partition size: 8.8 GiB used: 0 KiB (0.0%) priority: -2 dev: /dev/dm-1
maj-min: 254:1 mapped: luks-69215ea9-dd85-46aa-ad37-aa3effd3b358
Sensors:   System Temperatures: cpu: 56.0 C mobo: 27.8 C
Fan Speeds (RPM): N/A
Info:      Processes: 297 Uptime: 59m wakeups: 1 Memory: 7.64 GiB used: 3.61 GiB (47.3%) Init: systemd
v: 249 tool: systemctl Compilers: gcc: 11.1.0 clang: 12.0.1 Packages: pacman: 1693 lib: 384
Shell: fish v: 3.3.1 default: Bash v: 5.1.8 running-in: konsole inxi: 3.3.06

Where in that article does it say the keyboard backlight works or needs a driver?

Are you certain that your specific model has a backlit keyboard?

3 Likes

Hi there, welcome to the community.

Did you try the process told in

https://community.acer.com/en/discussion/602589/with-ubuntu-os-how-enable-acer-5-backlit-keyboard

1 Like