cat /sys/class/leds/smc::kbd_backlight/brightnessĮxpande option 1 from step 4: I create a file named nf in /etc/modprobe.d and added options sony-laptop kbd_backlight=0 to the file, save it and restarted the computer.Reloding modprobe module with passing this command: sudo modprobe -v sony_laptop kbd_backlight_timeout=3 kbd_backlight=0 also I changed kbd_backlight=0 to kbd-backlight=0 and I get no error and gave me the below output) insmod /lib/modules/3.13.0-35-generic/kernel/drivers/platform/x86/sony-laptop.ko kbd_backlight=0 Output of second command in above:(for both trying with sony_laptop and/or sony-laptop. Sudo modprobe -v sony_laptop kbd_backlight=0 And with -l option I get modprobe: invalid option - 'l' Reloading modprobe module with passing following commands: sudo modprobe -r sony_laptop # <- No output. Same output ^^ if run modinfo sony_laptop(Note: underscore_ instead of dash-) Parm: kbd_backlight_timeout:meaningful values vary from 0 to 3 and their meaning depends on the model (default: no change from current value) (int) Parm: kbd_backlight:set this to 0 to disable keyboard backlight, 1 to enable it (default: no change from current value) (int) Parm: minor:minor number of the misc device for the SPIC compatibility code, default is -1 (automatic) (int) Parm: camera:set this to 1 to enable Motion Eye camera controls (only use it if you have a C1VE or C1VN model) (int) Parm: mask:set this to the mask of event you want to enable (see doc) (ulong) Parm: compat:set this if you want to enable backward compatibility mode (int) Parm: no_spic:set this if you don't want to enable the SPIC device (int) Parm: debug:set this to 1 (and RTFM) if you want to help the development of this driver (int) Vermagic: 3.13.0-37-generic SMP mod_unload modversions This is the output of running modinfo sony-laptop:(NB: See the last two lines) filename: /lib/modules/3.13.0-37-generic/kernel/drivers/platform/x86/sony-laptop.koĭescription: Sony laptop extras driver (SPIC and SNC ACPI device) Rtsx_pci 46202 2 rtsx_pci_ms,rtsx_pci_sdmmc Snd 69322 17 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midiĭrm 303102 8 ttm,i915,drm_kms_helper,nouveau Snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi Snd_seq 61560 2 snd_seq_midi_event,snd_seq_midi Snd_page_alloc 18710 2 snd_pcm,snd_hda_intelĬryptd 20359 844 ghash_clmulni_intel,aesni_intel,ablk_helper Snd_pcm 102099 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel Snd_hda_codec 192906 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel Videodev 134688 2 uvcvideo,videobuf2_core Videobuf2_memops 13362 1 videobuf2_vmalloc What modules are loaded if I run lsmod command: Module Size Used by All of them are root owner.): r-r-r- 1 battery_care_health The ls -l /sys/devices/platform/sony-laptop/ command shown files/directoes/symbolic links as following (I removed extra attributes and highlighted type of them into. Important: All try had same result on battery and AC power I get SVF1521DCXW by running sudo dmidecode -s system-product-name.įirst of all doesn't exist /sys/devices/platform/sony-laptop/kbd_backlight file on my machine.īy default, keyboard backlight is stay OFF When I press any key it turns ON for a while 15 seconds and if I don't touch any key, it goes to turns OFF again. I can turn off it with VAIO Control Center in Windows OS but I don't know how can I turn it off in Ubuntu 14.04. It doesn't have a phisycal function shortcut key on the keyboard. In the Edit DWORD (32-bit) Value window, in the Value data: box, type: 0 and then click the OK button.I have a Sony vaio laptop fit 15E model SVF1521DCXW and I want to turn OFF its keyboard back-light.On the menu bar, click Edit and then click Modify.In the right pane, click to select Enable.In the Registry Editor window, in the left pane, navigate to the HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Sony Corporation\VAIO Event Service\Modules\ folder.NOTE: If prompted for an administrator password or a User Account Control prompt is displayed, type the appropriate password, or click Yes. Click the Start button and then in the Search box, type: regedit.It is recommended to create a backup of the registry before proceeding. Using the Registry editor incorrectly can cause serious problems that may require the operating system to be reinstalled and can result in the potential loss of data. This procedure involves editing the Registry.
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