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Thread: No screen brightness control in 13.2

  1. #1
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    Default No screen brightness control in 13.2

    Hi everyone,

    I've just upgraded to 13.2, and I found that I've lost the capability to change the screen brightness. The Fn keys are working fine. According to Google, it seems that kernel 3.16 is the one to blame. I've tried to solve this by using some kernel parameters like

    acpi_backlight=vendor acpi_osi=Linux video.use_native_backlight=1,

    with no sucess.

    My eyes and my battery would really appreciate any help.

    Nico.

  2. #2
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    Default Re: No screen brightness control in 13.2

    Hi
    What is your hardware?

    If it's a SONY, have a look here;
    http://bugzilla.opensuse.org/show_bug.cgi?id=903544

    Else have you tries;
    Code:
    acpi_osi=\"!Windows 2012\"
    Cheers Malcolm °¿° (Linux Counter #276890)
    SUSE SLE, openSUSE Leap/Tumbleweed (x86_64) | GNOME DE
    If you find this post helpful and are logged into the web interface,
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  3. #3
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    Default Re: No screen brightness control in 13.2

    That did not make it either. This is a Toshiba Satellite L745.

  4. #4
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    Default Re: No screen brightness control in 13.2

    Quote Originally Posted by nicovai View Post
    That did not make it either. This is a Toshiba Satellite L745.
    Just a thought - which graphics driver is in use? (I assisted a user recently with a backlight adjustment issue, and a basic framebuffer driver was found to be in use.) That could be impacting here. Upload /var/log/Xorg.0.log to http://pastebin.com/ and post the link to it here.

    Graphics hardware details too please:
    Code:
    /usr/sbin/hwinfo --gfxcard

  5. #5
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    Default Re: No screen brightness control in 13.2

    Here's the log:
    http://pastebin.com/FWtGFYGY

    These are my hardware details:
    Code:
    09: PCI 02.0: 0300 VGA compatible controller (VGA)              
      [Created at pci.328]
      Unique ID: _Znp.p8dSE1_5TZ8
      SysFS ID: /devices/pci0000:00/0000:00:02.0
      SysFS BusID: 0000:00:02.0
      Hardware Class: graphics card
      Model: "Intel 2nd Generation Core Processor Family Integrated Graphics Controller"
      Vendor: pci 0x8086 "Intel Corporation"
      Device: pci 0x0116 "2nd Generation Core Processor Family Integrated Graphics Controller"
      SubVendor: pci 0x1179 "Toshiba America Info Systems"
      SubDevice: pci 0xfcd0 
      Revision: 0x09
      Driver: "i915"
      Driver Modules: "drm"
      Memory Range: 0xc0000000-0xc03fffff (rw,non-prefetchable)
      Memory Range: 0xb0000000-0xbfffffff (ro,non-prefetchable)
      I/O Ports: 0x3000-0x303f (rw)
      IRQ: 41 (5266 events)
      I/O Ports: 0x3c0-0x3df (rw)
      Module Alias: "pci:v00008086d00000116sv00001179sd0000FCD0bc03sc00i00"
      Driver Info #0:
        Driver Status: i915 is active
        Driver Activation Cmd: "modprobe i915"
      Config Status: cfg=new, avail=yes, need=no, active=unknown
    
    
    Primary display adapter: #9

  6. #6
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    Default Re: No screen brightness control in 13.2

    Quote Originally Posted by nicovai View Post
    No, you didn't post the entire log, so doesn't tell us anything.

  7. #7
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    Default Re: No screen brightness control in 13.2

    Quote Originally Posted by nicovai View Post
    That did not make it either. This is a Toshiba Satellite L745.
    Hi
    Just to confirm, the acpi option I proposed was added just by itself, no other options?
    Cheers Malcolm °¿° (Linux Counter #276890)
    SUSE SLE, openSUSE Leap/Tumbleweed (x86_64) | GNOME DE
    If you find this post helpful and are logged into the web interface,
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    Default Re: No screen brightness control in 13.2

    Quote Originally Posted by deano_ferrari View Post
    No, you didn't post the entire log, so doesn't tell us anything.
    Sorry about that. Please check it now; same link.

  9. #9
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    Default Re: No screen brightness control in 13.2

    Quote Originally Posted by malcolmlewis View Post
    Hi
    Just to confirm, the acpi option I proposed was added just by itself, no other options?
    Yes: no other options.

  10. #10
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    Default Re: No screen brightness control in 13.2

    Quote Originally Posted by nicovai View Post
    Sorry about that. Please check it now; same link.
    Thanks. That checks out as expected.

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