Recent update broke my laptop screen brightness settings. And I`d like to know how to fix it.
I did a fresh install of Manjaro KDE 21.2.2 (Kernel 5.15.16-1) on a Lenovo Legion 5 (2020) laptop,
on this system changing display brightness worked fine.
Then I updated the system through Add/Remove Software (about 1.3 Gb of files to update), rebooted it and did not change the kernel - display brightness stopped working or rather got stuck on one setting (on which it was set before the update took place) despite moving the slider in Battery and Brightness applet or changing it via keyboard shortcuts.
Then I updated the kernel to 5.16.7-1, rebooted again, checked for updates (everything is up-to-date) and changing brightness still doesn`t work.
I`d like to fix this situation, but the only viable option that I can see is fresh installing the distro that I started out with and not updating it at all. Can someone help me?
okay there is an issue with the lenovo and the kernel but the only description i got is from a lenovo 7 / 7i. can you check the hardware-difference between this and yours and additional please post the output as described here
Welcome to Manjaro!
Please read this: [HowTo] Provide System Information
and press the three dots … below your post and press the to give us more information so we can see what’s really going on.
Now we know the symptom of the disease, but we need some more probing to know where the origin lies…
An inxi --admin --verbosity=7 --filter --no-host --width would be the minimum required information for us to be able to help you. (Personally Identifiable Information like serial numbers and MAC addresses will be filtered out by the above command)
Also, please copy-paste that output in-between 3 backticks ``` at the beginning and end of the code/text.
did you ever changed the grub-config ? there is a workaround for lenovo. please read the links below carefully, but please ask before you change something that will cause pain. one solution is described here
I am delighted to have fixed the problem in such a short time. I hope everything will work just fine from now on. Thank you for your help, Olli. And thanks to you too, linux-aarhus for your input. Should I mark my own post as a solution even though you posted the link to it in the first place, Olli?
Hi There !!
Sry for comin’ up late
Coincidentally We share the exact laptop even the model
and I had pulled the brightness issue on my laptop some days ago…
I run 60 Whr instead of 80… Can I ask you how is your battery life ?
You actually experienced this brightness issue a little late
Some update of Amd-ucode caused this issue like 1 month ago…
The only problem I felt was fully powering down Nvidia gpu nvidia-smi
Test this in cmd… You will see the nvidia is powered on no matter what
However some folkes found the ways to power down nvidia for extra hour of life. Link here
I personally haven’t tested this cause I am happy with my 2 and half hour of 100 % to 30%.
I don’t recommend you this… Just enlightening you becuase the track to poweron the nvidia again is really nerve wrecking
Battery life is great for me when using this laptop as a torrent downloading machine with closed down lid without connecting to power adapter. Usually I get more than 4 hrs out of it. When watching high-quality videos through VLC on medium brightness I get about 3.5 hours, on max brightness about 2.5 hours, I haven`t checked specifically, of course, just an estimate.
About nvidia
| NVIDIA-SMI 510.47.03 Driver Version: 510.47.03 CUDA Version: 11.6 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 NVIDIA GeForce ... Off | 00000000:01:00.0 Off | N/A |
| N/A 34C P8 1W / N/A | 5MiB / 6144MiB | 0% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
| 0 N/A N/A 748 G /usr/lib/Xorg 4MiB |
+-----------------------------------------------------------------------------+```
@kanpeki can you please change the topic name to Lenovo Laptop specific such as
Laptop brightness issue in Lenovo Legion Laptop or Lenovo Laptop
It would be a easier search for those who are going to run across this issue in the future specially for Lenovo Laptop users
And just a tip: if you ever plan to use Lightdm manager you are likely to have lightdm crashing for once in every 20 boot…
Since you have an advanced system that boots in superfast mode, then lightdm and graphics drivers may run into race conditions. The lightdm service may start before the Kernel loads the graphics drivers. If this is the case, you may try to add the following lines in the /etc/lightdm/lightdm.conf file under [lightDM] section.