It is during that time that you can also select Recovery Mode or Recovery Menu and having it set to zero can mean you have to be Super Fast with your finger on the Left Shift Key to grab it. But then, they also keep their monitors hanging upside down, too. You can set it to 7 seconds or ten seconds just as easily… If you set it to five seconds, then it will wait that amount of time before vanishing, for you to make a selection on that menu. Re: SOLVED backlight and screen brightness not working on OLED screen After spending quite some time searching around and finally going through different wiki threads, here, here and here it seems that xrandr or icc-brightness is the only solution for the OLED screens at the moment. To change the brightness of your screen, click the system menu on the right side of the top bar and adjust the screen brightness slider to the value you want to. Then browse to the X11 config file path /etc/X11/ cd /etc/X11/ If you do not find any file in the above path, check the below path for the configuration.
If your timeout is set to 0 seconds, you probably won’t even see it. Method 3: Fix Brightness by configuring X11 Follow this method if none of the above fixes works. When you begin the boot up, a Loading Menu will run. What the Timeout does at zero or at five seconds: If you are freshly migrating to Linux, you may need to access that recovery menu before long and it would be better to have it easily accessible. explanation is that acpi adds its own backlight control even if one is already present which is intelbacklight, adding this line forces acpi to use the intel backlight. The reason behind the time out (This will increase your boot time by about ten seconds) is to ensure you can access the Recovery Menu easily if you need to. GRUBCMDLINELINUXDEFAULT'quiet splash enativebacklight1'. Try replacing current /etc/apt/sources.list with a sample one from a fresh install. I have attached a bug report log, which also shows my various attempts to hack around the problem (different = kernel parameters, using a self-built 5.12 kernel in the hopes nouveau would work sufficiently etc.), but the currently running config should be sane (distro kernel, no special kernel parameters).While you are in there… You Might consider changing grub timeout to 5 Mycielski Open the file at /etc/default/grub with gedit (or something else) Find this line in the file: GRUBCMDLINELINUXDEFAULTquiet.16 answers Top answer: UBUNTU 18LTS it is, it works perfectly out of the box AND supports my brightness keys. Got proprietary Nvidia drivers installed by Ubuntu itself, graphic card is recognized well by the system yet brightness control does not work when adjusted by either FN + F5/6 shortcut or by dragging brightness slider manually (keyboard shortcut triggers slider move as well, so it's heard by the system). FWIW, brightness control is working when using the iGPU (using amdgpu driver) instead of the dGPU, but in that case the external monitor doesn’t work because the nvidia driver can’t be used as output sink for amdgpu. This is the case for both the 460.67 and 465.24 drivers. An indicator that the graphics card in use is Intel. As you can see, the output for me is dellbacklight and intelbacklight. Run the command below in the terminal to know what video card is used for the backlight/brightness: ls /sys/class/backlight/.
Anyone got any clue on how to fix that Real Linux newbie here still, but I installed Linux Lite so that his dying laptop could perhaps last a little longer. Fn keys (OSD comes up, but no further effect) Installed Linux Lite on my mate's old laptop last week, his major complain being that he can't change the brightness.I am using Fedora 33 on a Legion 5 Pro laptop featuring a RTX 3070 GPU, and backlight brightness control isn’t working at all.
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