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1 Posts

04-26-2020

US

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Lenovo Yoga S740-14IIL Brightness hotkeys not working on Ubuntu 20.04

2020-04-26, 13:49 PM

Hi, I just installed the latest Ubuntu 20.04 and the brightness hotkeys are not working. I created a bug report (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872311) on Ubuntu for this, but based on the debugging the problem is on the firmware side. So Ubuntu does not register the hotkey (Fn + F11/F12) at all. Maybe this could be something for the Lenovo developers to do?

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11 Posts

11-26-2017

BR

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Re:Lenovo Yoga S740-14IIL Brightness hotkeys not working on Ubuntu 20.04

2020-04-29, 20:48 PM

Same problem here. Do your power button and suspend on lid close are working?

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1 Posts

04-26-2020

US

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Re:Lenovo Yoga S740-14IIL Brightness hotkeys not working on Ubuntu 20.04

2020-05-02, 13:22 PM

Hi, my power button is working, however I have not tested the suspend on lid. I seem to have some problems with the suspend generally, though.

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3 Posts

05-02-2020

NL

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Re:Lenovo Yoga S740-14IIL Brightness hotkeys not working on Ubuntu 20.04

2020-05-07, 22:35 PM
Same here. Power button does work, wake up doesn't, suspend on lid close doesn't. I have a Thinkpad P73.
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1 Posts

06-26-2020

RU

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Re:Lenovo Yoga S740-14IIL Brightness hotkeys not working on Ubuntu 20.04

2020-06-26, 8:49 AM

Same problem. This laptop is piece of **bleep**.

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115 Posts

12-17-2018

US

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Re:Lenovo Yoga S740-14IIL Brightness hotkeys not working on Ubuntu 20.04

2020-06-26, 10:18 AM

Brightness hotkeys are usually F5 and F6 for background brightness, if you have an OLED panel on your system, there are some issues in that panel for brightness that is fixed in a 5.7 kernel update.

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1 Posts

07-09-2020

CA

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Re:Lenovo Yoga S740-14IIL Brightness hotkeys not working on Ubuntu 20.04

2020-07-09, 14:55 PM

I ran into this issue myself, running Debian.
The problem resolved itself after I hibernated (not suspend!) and woke my laptop.

I have a quick writeup available here.

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