Keyboard backlight Ubuntu 18.10 not working

I have a problem with the new version of Ubuntu. I used to have Ubuntu 18.04 LTS version, but I decided to change to the normal version and update it to Ubuntu 18.10. Since then I can't turn the keyboard backlight on.

I have already tried to open a terminal and type: xset led 1 ... xset led 32, but it doesn't work. I have also tried to turn it on by pressing Fn+F4 and that shows the picture of the keyboard backlight but without the blue progressbar.

Fn+F4

Does somebody know how I could fix it or what the problem is?

edited Oct 31 '18 at 9:35

Melebius

4,86751939

asked Oct 22 '18 at 10:44

Isaac Lacort

134

've got the same issue on my Asus Zenbook UX410UA. Both Fn+F3 and Fn+F4 toggle shows the on-screen icon as if I'm adjusting the brightness but the actual keyboard backlight stays off. I can set the keyboard light on/off and adjusts the brightness via terminal using the following command, where 0 = off and 1, 2, and 3 are the brightness levels. But would really like to be able to use the Fn+F3 and Fn+F4 as intended. echo 3 | sudo tee /sys/class/leds/asus::kbd_backlight/brightness

– Kyriakos Loizou
Oct 23 '18 at 7:57

add a comment |

Fn+F4

Does somebody know how I could fix it or what the problem is?

edited Oct 31 '18 at 9:35

Melebius

4,86751939

asked Oct 22 '18 at 10:44

Isaac Lacort

134

've got the same issue on my Asus Zenbook UX410UA. Both Fn+F3 and Fn+F4 toggle shows the on-screen icon as if I'm adjusting the brightness but the actual keyboard backlight stays off. I can set the keyboard light on/off and adjusts the brightness via terminal using the following command, where 0 = off and 1, 2, and 3 are the brightness levels. But would really like to be able to use the Fn+F3 and Fn+F4 as intended. echo 3 | sudo tee /sys/class/leds/asus::kbd_backlight/brightness

– Kyriakos Loizou
Oct 23 '18 at 7:57

add a comment |

Fn+F4

Does somebody know how I could fix it or what the problem is?

edited Oct 31 '18 at 9:35

Melebius

4,86751939

asked Oct 22 '18 at 10:44

Isaac Lacort

134

Fn+F4

Does somebody know how I could fix it or what the problem is?

asus 18.10 keyboard-backlight

edited Oct 31 '18 at 9:35

Melebius

4,86751939

asked Oct 22 '18 at 10:44

Isaac Lacort

134

edited Oct 31 '18 at 9:35

Melebius

4,86751939

asked Oct 22 '18 at 10:44

Isaac Lacort

134

edited Oct 31 '18 at 9:35

Melebius

4,86751939

edited Oct 31 '18 at 9:35

Melebius

4,86751939

edited Oct 31 '18 at 9:35

Melebius

4,86751939

asked Oct 22 '18 at 10:44

Isaac Lacort

134

asked Oct 22 '18 at 10:44

Isaac Lacort

134

asked Oct 22 '18 at 10:44

Isaac Lacort

134

've got the same issue on my Asus Zenbook UX410UA. Both Fn+F3 and Fn+F4 toggle shows the on-screen icon as if I'm adjusting the brightness but the actual keyboard backlight stays off. I can set the keyboard light on/off and adjusts the brightness via terminal using the following command, where 0 = off and 1, 2, and 3 are the brightness levels. But would really like to be able to use the Fn+F3 and Fn+F4 as intended. echo 3 | sudo tee /sys/class/leds/asus::kbd_backlight/brightness

– Kyriakos Loizou
Oct 23 '18 at 7:57

add a comment |

've got the same issue on my Asus Zenbook UX410UA. Both Fn+F3 and Fn+F4 toggle shows the on-screen icon as if I'm adjusting the brightness but the actual keyboard backlight stays off. I can set the keyboard light on/off and adjusts the brightness via terminal using the following command, where 0 = off and 1, 2, and 3 are the brightness levels. But would really like to be able to use the Fn+F3 and Fn+F4 as intended. echo 3 | sudo tee /sys/class/leds/asus::kbd_backlight/brightness

– Kyriakos Loizou
Oct 23 '18 at 7:57

've got the same issue on my Asus Zenbook UX410UA. Both Fn+F3 and Fn+F4 toggle shows the on-screen icon as if I'm adjusting the brightness but the actual keyboard backlight stays off. I can set the keyboard light on/off and adjusts the brightness via terminal using the following command, where 0 = off and 1, 2, and 3 are the brightness levels. But would really like to be able to use the Fn+F3 and Fn+F4 as intended. echo 3 | sudo tee /sys/class/leds/asus::kbd_backlight/brightness

– Kyriakos Loizou
Oct 23 '18 at 7:57

add a comment |

4 Answers
4

active

oldest

votes

I was having the same issue on my UX430, to fix it just update your kernel to 4.19. You don't get the on screen display but it does now at least work

edited Nov 2 '18 at 14:24

answered Oct 24 '18 at 22:44

James Bray

462

Worked for me too! I've reverted back to the 4.18.0-10 and I'll wait for the kernel update via Ubuntu as manually install kernels seems to require disabling secure boot in order to avoid invalid signature error and I don't wish to do that.

– Kyriakos Loizou
Oct 28 '18 at 18:35

add a comment |

Same issue here on a MacBook Air.
I can control the keyboard backlight by echoing a value into

/sys/class/leds/smc::kbd_backlight/brightness

Therefore, I thought it was not a kernel bug... and 4.19 does not solve the problem for me.

edited Nov 7 '18 at 9:32

Melebius

4,86751939

answered Oct 31 '18 at 9:27

user192692

4.19 does not solve the problem.

– user192692
Nov 2 '18 at 18:38

Please edit your answer to add information and updates, do not post them in comments. I’ve done it this time for you.

– Melebius
Nov 7 '18 at 9:31

add a comment |

I was able to solve this.

Try browsing the /sys/class/leds/ directory. In my case I found 2 files that pertains to keyboard:

asus::kbd_backlight

asus::kbd_backlight_1

First file has 3 in it but the second has 0, so I set it to 3 as well and viola, it worked.

Now I wonder why did I had 2 files that pertains to keyboard brightness? can somebody point me to the config that reads out the files above so that I can correct which file to point it? TIA.

Note: I'm running 4.18

edited Feb 10 at 10:39

Thomas

3,81581527

answered Feb 10 at 3:56

Clemen Canaria

add a comment |

In my ZenBook pro UX580 the settings could be found in:

/sys/class/leds/asus::kbd_backlight

The file holds single value - 0. Replace it with grater number and you will have keyboard backlight on.

answered Feb 27 at 15:22

Илия Чепишев

add a comment |

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4 Answers
4

active

oldest

votes

4 Answers
4

active

oldest

votes

I was having the same issue on my UX430, to fix it just update your kernel to 4.19. You don't get the on screen display but it does now at least work

edited Nov 2 '18 at 14:24

answered Oct 24 '18 at 22:44

James Bray

462

Worked for me too! I've reverted back to the 4.18.0-10 and I'll wait for the kernel update via Ubuntu as manually install kernels seems to require disabling secure boot in order to avoid invalid signature error and I don't wish to do that.

– Kyriakos Loizou
Oct 28 '18 at 18:35

add a comment |

I was having the same issue on my UX430, to fix it just update your kernel to 4.19. You don't get the on screen display but it does now at least work

edited Nov 2 '18 at 14:24

answered Oct 24 '18 at 22:44

James Bray

462

Worked for me too! I've reverted back to the 4.18.0-10 and I'll wait for the kernel update via Ubuntu as manually install kernels seems to require disabling secure boot in order to avoid invalid signature error and I don't wish to do that.

– Kyriakos Loizou
Oct 28 '18 at 18:35

add a comment |

I was having the same issue on my UX430, to fix it just update your kernel to 4.19. You don't get the on screen display but it does now at least work

edited Nov 2 '18 at 14:24

answered Oct 24 '18 at 22:44

James Bray

462

I was having the same issue on my UX430, to fix it just update your kernel to 4.19. You don't get the on screen display but it does now at least work

edited Nov 2 '18 at 14:24

answered Oct 24 '18 at 22:44

James Bray

462

edited Nov 2 '18 at 14:24

answered Oct 24 '18 at 22:44

James Bray

462

answered Oct 24 '18 at 22:44

James Bray

462

answered Oct 24 '18 at 22:44

James Bray

462

Worked for me too! I've reverted back to the 4.18.0-10 and I'll wait for the kernel update via Ubuntu as manually install kernels seems to require disabling secure boot in order to avoid invalid signature error and I don't wish to do that.

– Kyriakos Loizou
Oct 28 '18 at 18:35

add a comment |

Worked for me too! I've reverted back to the 4.18.0-10 and I'll wait for the kernel update via Ubuntu as manually install kernels seems to require disabling secure boot in order to avoid invalid signature error and I don't wish to do that.

– Kyriakos Loizou
Oct 28 '18 at 18:35

Worked for me too! I've reverted back to the 4.18.0-10 and I'll wait for the kernel update via Ubuntu as manually install kernels seems to require disabling secure boot in order to avoid invalid signature error and I don't wish to do that.

– Kyriakos Loizou
Oct 28 '18 at 18:35

add a comment |

Same issue here on a MacBook Air.
I can control the keyboard backlight by echoing a value into

/sys/class/leds/smc::kbd_backlight/brightness

Therefore, I thought it was not a kernel bug... and 4.19 does not solve the problem for me.

edited Nov 7 '18 at 9:32

Melebius

4,86751939

answered Oct 31 '18 at 9:27

user192692

4.19 does not solve the problem.

– user192692
Nov 2 '18 at 18:38

Please edit your answer to add information and updates, do not post them in comments. I’ve done it this time for you.

– Melebius
Nov 7 '18 at 9:31

add a comment |

Same issue here on a MacBook Air.
I can control the keyboard backlight by echoing a value into

/sys/class/leds/smc::kbd_backlight/brightness

Therefore, I thought it was not a kernel bug... and 4.19 does not solve the problem for me.

edited Nov 7 '18 at 9:32

Melebius

4,86751939

answered Oct 31 '18 at 9:27

user192692

4.19 does not solve the problem.

– user192692
Nov 2 '18 at 18:38

Please edit your answer to add information and updates, do not post them in comments. I’ve done it this time for you.

– Melebius
Nov 7 '18 at 9:31

add a comment |

Same issue here on a MacBook Air.
I can control the keyboard backlight by echoing a value into

/sys/class/leds/smc::kbd_backlight/brightness

Therefore, I thought it was not a kernel bug... and 4.19 does not solve the problem for me.

edited Nov 7 '18 at 9:32

Melebius

4,86751939

answered Oct 31 '18 at 9:27

user192692

Same issue here on a MacBook Air.
I can control the keyboard backlight by echoing a value into

/sys/class/leds/smc::kbd_backlight/brightness

Therefore, I thought it was not a kernel bug... and 4.19 does not solve the problem for me.

edited Nov 7 '18 at 9:32

Melebius

4,86751939

answered Oct 31 '18 at 9:27

user192692

edited Nov 7 '18 at 9:32

Melebius

4,86751939

edited Nov 7 '18 at 9:32

Melebius

4,86751939

edited Nov 7 '18 at 9:32

Melebius

4,86751939

answered Oct 31 '18 at 9:27

user192692

answered Oct 31 '18 at 9:27

user192692

answered Oct 31 '18 at 9:27

user192692

4.19 does not solve the problem.

– user192692
Nov 2 '18 at 18:38

Please edit your answer to add information and updates, do not post them in comments. I’ve done it this time for you.

– Melebius
Nov 7 '18 at 9:31

add a comment |

4.19 does not solve the problem.

– user192692
Nov 2 '18 at 18:38

Please edit your answer to add information and updates, do not post them in comments. I’ve done it this time for you.

– Melebius
Nov 7 '18 at 9:31

4.19 does not solve the problem.

– user192692
Nov 2 '18 at 18:38

Please edit your answer to add information and updates, do not post them in comments. I’ve done it this time for you.

– Melebius
Nov 7 '18 at 9:31

add a comment |

I was able to solve this.

Try browsing the /sys/class/leds/ directory. In my case I found 2 files that pertains to keyboard:

asus::kbd_backlight

asus::kbd_backlight_1

First file has 3 in it but the second has 0, so I set it to 3 as well and viola, it worked.

Now I wonder why did I had 2 files that pertains to keyboard brightness? can somebody point me to the config that reads out the files above so that I can correct which file to point it? TIA.

Note: I'm running 4.18

edited Feb 10 at 10:39

Thomas

3,81581527

answered Feb 10 at 3:56

Clemen Canaria

add a comment |

I was able to solve this.

Try browsing the /sys/class/leds/ directory. In my case I found 2 files that pertains to keyboard:

asus::kbd_backlight

asus::kbd_backlight_1

First file has 3 in it but the second has 0, so I set it to 3 as well and viola, it worked.

Now I wonder why did I had 2 files that pertains to keyboard brightness? can somebody point me to the config that reads out the files above so that I can correct which file to point it? TIA.

Note: I'm running 4.18

edited Feb 10 at 10:39

Thomas

3,81581527

answered Feb 10 at 3:56

Clemen Canaria

add a comment |

I was able to solve this.

Try browsing the /sys/class/leds/ directory. In my case I found 2 files that pertains to keyboard:

asus::kbd_backlight

asus::kbd_backlight_1

First file has 3 in it but the second has 0, so I set it to 3 as well and viola, it worked.

Now I wonder why did I had 2 files that pertains to keyboard brightness? can somebody point me to the config that reads out the files above so that I can correct which file to point it? TIA.

Note: I'm running 4.18

edited Feb 10 at 10:39

Thomas

3,81581527

answered Feb 10 at 3:56

Clemen Canaria

I was able to solve this.

Try browsing the /sys/class/leds/ directory. In my case I found 2 files that pertains to keyboard:

asus::kbd_backlight

asus::kbd_backlight_1

First file has 3 in it but the second has 0, so I set it to 3 as well and viola, it worked.

Now I wonder why did I had 2 files that pertains to keyboard brightness? can somebody point me to the config that reads out the files above so that I can correct which file to point it? TIA.

Note: I'm running 4.18

edited Feb 10 at 10:39

Thomas

3,81581527

answered Feb 10 at 3:56

Clemen Canaria

edited Feb 10 at 10:39

Thomas

3,81581527

edited Feb 10 at 10:39

Thomas

3,81581527

edited Feb 10 at 10:39

Thomas

3,81581527

answered Feb 10 at 3:56

Clemen Canaria

answered Feb 10 at 3:56

Clemen Canaria

answered Feb 10 at 3:56

Clemen Canaria

add a comment |

In my ZenBook pro UX580 the settings could be found in:

/sys/class/leds/asus::kbd_backlight

The file holds single value - 0. Replace it with grater number and you will have keyboard backlight on.

answered Feb 27 at 15:22

Илия Чепишев

add a comment |

In my ZenBook pro UX580 the settings could be found in:

/sys/class/leds/asus::kbd_backlight

The file holds single value - 0. Replace it with grater number and you will have keyboard backlight on.

answered Feb 27 at 15:22

Илия Чепишев

add a comment |

In my ZenBook pro UX580 the settings could be found in:

/sys/class/leds/asus::kbd_backlight

The file holds single value - 0. Replace it with grater number and you will have keyboard backlight on.

answered Feb 27 at 15:22

Илия Чепишев

In my ZenBook pro UX580 the settings could be found in:

/sys/class/leds/asus::kbd_backlight

The file holds single value - 0. Replace it with grater number and you will have keyboard backlight on.

answered Feb 27 at 15:22

Илия Чепишев

answered Feb 27 at 15:22

Илия Чепишев

answered Feb 27 at 15:22

Илия Чепишев

answered Feb 27 at 15:22

Илия Чепишев

add a comment |

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