I recently purchased a Lenovo IdeaPad Y450 Laptop, but the screen brightness was not being adjusted when I used the proper key combination (FN+UP/DOWN).
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I recently purchased a Lenovo IdeaPad Y450 Laptop, but the screen brightness was not being adjusted when I used the proper key combination (FN+UP/DOWN).
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Comments 24
I have the same laptop the same model with you, I also have the same problem. I follow your command, but it wont let me change the grub
Warning: unknown mime-type for “/etc/default/grub” — using “application/octet-stream”
Error: no write permission for file “/etc/default/grub”
help
Posted 28 Dec 2009 at 6:11 pm ¶Is that error when you are attempting to edit the settings file?
Posted 28 Dec 2009 at 6:15 pm ¶Are you editing /etc/default/grub as root?
Try in the terminal: sudo nano /etc/default/grub
Thank u very much, the problem solved.
Posted 28 Dec 2009 at 6:46 pm ¶Thanks for the post
I tried the same as mentioned. Updated grub. Everything ran successfully. After restarting, still the Fn+UP/DOWN keys is not changing the brightness. Should I replace vendor with some actual hex value?
Posted 09 Jan 2010 at 1:20 am ¶Are the FN Up & Down keys the designated keys for adjusting screen brightness on your laptop?
Posted 09 Jan 2010 at 1:27 pm ¶thanks a lot dude!
Posted 17 Jan 2010 at 2:07 pm ¶this works also for the lenovo ideapad u350.
I’m glad it worked.
Posted 17 Jan 2010 at 2:16 pm ¶Can somebody help me and tell me i can fix this problem. i mean give me instructions.
Posted 11 Feb 2010 at 6:40 pm ¶Did the above instructions not work?
Posted 11 Feb 2010 at 8:03 pm ¶Awesome! Appreciate you posting this. Confirmed to work on an Ideapad U350 and Linux Mint 8.
Posted 19 Feb 2010 at 6:37 pm ¶do i use terminal?
Posted 24 Feb 2010 at 12:33 pm ¶how do i get out of /etc/default/grub without killing the process
Posted 24 Feb 2010 at 12:51 pm ¶The following command will open a window to edit the config file:
In terminal,
gksudo gedit /etc/default/grub
..then try following the instructions above.
Posted 24 Feb 2010 at 12:54 pm ¶If that command doesn’t work, you can also edit it in the terminal by:
sudo nano /etc/default/grub
Control+X then Y to save.
Posted 24 Feb 2010 at 1:07 pm ¶Control+O to save.
Got it working, thank you =)
Posted 26 Feb 2010 at 1:46 pm ¶not work for me.
Posted 28 Mar 2010 at 8:26 am ¶before trying what u said, i got a indicator showing the brightness is changing( though it actually doesnt change), but after following ur instruction, the indicator is gone when i press fn+up arrow
same model y450, nvidia 192 driver
any ideas?
Sorry, I don’t have any ideas.
Posted 28 Mar 2010 at 12:52 pm ¶It works for me on my VisionNotebook (ubuntu 9.10) but only the buttons work, the brightness doesn’t change
Posted 21 Apr 2010 at 4:55 am ¶This used to work for me. however since an update of lucid a couple of weeks ago it doesnt work. can anyone confirm that this is working for him with the latest updates of lucid?
Posted 25 Apr 2010 at 11:53 am ¶I was looking to buy a laptop computer desk for the refurbished laptop computer in my office but I’m noticing that I can get significantly better prices online instead of driving down to my local Office Max, in many cases 50%-70% cheaper. The only bad thing is that I have to wait a few days to get it delivered.
Posted 16 May 2010 at 7:27 pm ¶I am currently running Ubuntu Lucid Lynx. I have it running on a Lenovo U350. I experienced this issue when i upgraded to 10.04. But there is a fix:
Open a terminal,
“sudo nano /etc/default/grub
Change:
GRUB_CMDLINE_LINUX_DEFAULT=
Posted 23 Jul 2010 at 8:29 pm ¶it worked for ideapad u350 with ubuntu 10.04 but not working on 10.10
Posted 09 Nov 2010 at 1:31 pm ¶So.. I’ve read every post here in hopes that I can get my brightness controls to start working but the only thing is that there is a complete lack of information. I see how to open the grub file in terminal and in gedit as root but after that I don’t really see any real information on what to change. So, if someone could post exactly what the grub file should look like then it would be most appreciated.
Posted 02 Apr 2011 at 8:52 am ¶Strongly suggest adding a “google+” button for the blog!
Posted 17 Dec 2011 at 12:22 am ¶Post a Comment