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Thread: LCD brightness is really low

  1. #1

    Question LCD brightness is really low

    My screen brightness is really low. From the gnome settings, it shows that the brightness is full and my keyboard shortcut also shows it's full but it actually is really dim so it's hard to see text on the screen. Also, the mousepad clicking function doesn't work. I can click on the button but clicking on the.. how to call it.. on the "pad" itself doesn't work. I am really used to clicking on the pad itself and not using the buttons. What can I do to resolve these problems?

    I have some.. Intel integrated craphics-****-card. Mobile 4 family or smth.
    The laptop itself is Samsung R410 plus.
    System is openSUSE 14.11 Ggome 3 desktop.

    From system settings somewhere I read:

    Code:
    Initializing Graphics with KMS (Kernel Mode Setting)
    With openSUSE 11.3 we switched to KMS (Kernel Mode Setting) for Intel, ATI and NVIDIA graphics, which now is our default. If you encounter problems with the KMS driver support (intel, radeon, nouveau), disable KMS by adding nomodeset to the kernel boot command line. To set this permanently, add it to the kernel command line in /boot/grub/menu.lst. This option makes sure the appropriate kernel module (intel, radeon, nouveau) is loaded with modeset=0 in initrd, i.e. KMS is disabled.
    In the rare cases when loading the DRM module from initrd is a general problem and unrelated to KMS, it is even possible to disable loading of the DRM module in initrd completely. For this set the NO_KMS_IN_INITRD sysconfig variable to yes via YAST, which then recreates initrd afterwards. Reboot your machine.
    On Intel without KMS the Xserver falls back to the fbdev driver (the intel driver only supports KMS); alternatively, there is the "intellegacy" driver (xorg-x11-driver-video-intel-legacy package) which still supports UMS (User Mode Setting). To use it, edit /etc/X11/xorg.conf.d/50-device.conf and change the driver entry to intellegacy.
    On ATI for current GPUs it falls back to radeonhd. On NVIDIA without KMS the nv driver is used (the nouveau driver only supports KMS).

  2. #2
    Join Date
    Jul 2009
    Location
    Montreal, Québec
    Posts
    833

    Default Re : LCD brightness is really low

    Hi,

    Can you adjust the brightness from the integrated function of your laptop ?

  3. #3

    Default Re: Re : LCD brightness is really low

    No, you mean the button combination? No.. it shows the icon on the screen and that I am changing it (the animation) but nothing actually changes.

  4. #4
    Join Date
    Jun 2008
    Location
    Norman, OK
    Posts
    209

    Default Re: Re : LCD brightness is really low

    What about in the BIOS? I know that Dell laptops have BIOS settings related to the LCD brightness.
    Main Machine: Dell G7 running Ubuntu 18.04
    Server: Dell PowerEdge SC1430 running CentOS 7.x

  5. #5

    Default Re: Re : LCD brightness is really low

    Yeah, I checked the BIOS, it was auto there, I changed it to user controlled but it didn't change anything. The auto thing was related to the part when you have the laptop on battery or connected to power .. something. I don't know the english word. Anyways, the thing is, when the computer launches the brightness is normal, in GRUB also but when it starts loading, it makes the screen dim. After some time it becomes even more dim. I checked the system settings and screen under there. There is an option to dim screen to save power and then after 10 minutes or whatever I choose. Shouldn't it affect the laptop when I'm not using it. It seams it dim's the screen after 10 minutes even if I'm using the laptop. Still.. the screen is dim, after 10 minutes it just went even more dim.

  6. #6
    Join Date
    Jul 2009
    Location
    Montreal, Québec
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    833

    Default Re : Re: Re : LCD brightness is really low

    You installed the GNOME 3 liveCD version, is that right ?

  7. #7

    Default Re: Re : Re: Re : LCD brightness is really low

    correct it is.

  8. #8
    Join Date
    Jul 2009
    Location
    Montreal, Québec
    Posts
    833

    Default Re : Re: Re : Re: Re : LCD brightness is really low

    Before installing this version, you had wich version ? Did you have this problem ? It could be related to this untested version of openSUSE.

  9. #9

    Default Re: Re : Re: Re : Re: Re : LCD brightness is really low

    Before it I had Ubuntu 10.10. The brightness adjusting didn't work there also but it didn't matter because the screen was at it's maximum brightness. Under windows 7, it works ok.

  10. #10
    Join Date
    Jul 2009
    Location
    Montreal, Québec
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    833

    Default Re : Re: Re : Re: Re : Re: Re : LCD brightness is really low

    I have no clue for you.

    The last thing I can tel you is that during next week, an official repo for the GNOME 3 desktop will be set up and maybe you should think about installing the actual GNOME 11.4 to see if you have this problem and upgrade your desktop to GNOME 3 once the repo is ready. This way, you'll get a GNOME 3 version tested by the openSUSE devs and you'll see if the problem persists.

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