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Thread: Lenovo Ideapad Y500 LiveUSB Problem

  1. #51
    Join Date
    Mar 2006
    Beans
    12

    Re: Lenovo Ideapad Y500 LiveUSB Problem

    I installed version .76 of nvidiabl and this solved the problem. Ah my eyes can finally take a rest!

  2. #52
    Join Date
    Dec 2011
    Beans
    2

    Re: Lenovo Ideapad Y500 LiveUSB Problem

    Even I am facing the same problem. Did you find a solution.

  3. #53
    Join Date
    Mar 2013
    Beans
    2

    Re: Lenovo Ideapad Y500 LiveUSB Problem

    Quote Originally Posted by jowsingchue View Post
    My y500 can now adjust brightness. The next problem is the maximum brightness I can reach is very low.

    When I boot up, this is my brightness level.
    Code:
    $ cat /sys/class/backlight/nvidia_backlight/brightness
    2340
    $ cat /sys/class/backlight/nvidia_backlight/actual_brightness
    2339
    $ cat /sys/class/backlight/nvidia_backlight/max_brightness
    2339
    Ater I adjust brightness, my "max_brighness" was changed
    Code:
    $ cat /sys/class/backlight/nvidia_backlight/max_brightness
    127
    and I cannot increase brightness beyond this value.

    Any idea please?


    find a solution?? I have the same error but I have searched for 2 days without any solution!

  4. #54
    Join Date
    Mar 2013
    Beans
    2

    Re: Lenovo Ideapad Y500 LiveUSB Problem

    Quote Originally Posted by rorschachwalter View Post
    The resolution issue is because the driver didn't properly install. Make sure you have "dkms" installed first as well as "linux-headers-`uname -r`" first. If you have "linux-headers-generic" installed, the nvidia driver will not work. So if you're still in that boat, you don't have to reinstall Ubuntu. Just remove the nvidia driver (and linux-headers-generic just for the heck of it), install linux-headers-`uname -r` first, then reinstall nvidia. Everything should work fine.

    First, make sure nvidiabl is being loaded automatically by adding a line saying simply "nvidiabl" to /etc/modules.

    The scripts I posted above weren't quite right, but they were really close. Here's what they should be:
    /etc/acpi/nvidia_backlight_up.sh:
    Code:
    #!/bin/sh
    
    test -f /sys/class/backlight/nvidia_backlight/brightness || exit 0
    
    VAL=`cat /sys/class/backlight/nvidia_backlight/actual_brightness`
    MAX=`cat /sys/class/backlight/nvidia_backlight/max_brightness`
    STEP=10
    
    VAL=`expr $VAL + $STEP`
    
    if [ $VAL -gt $MAX ]; then
        VAL=$MAX
    fi
    
    echo -n $VAL > /sys/class/backlight/nvidia_backlight/brightness
    /etc/acpi/nvidia_backlight_down.sh:
    Code:
    #!/bin/sh
    
    test -f /sys/class/backlight/nvidia_backlight/brightness || exit 0
    
    VAL=`cat /sys/class/backlight/nvidia_backlight/actual_brightness`
    MIN=0
    STEP=10
    
    VAL=`expr $VAL - $STEP`
    
    if [ $VAL -lt $MIN ]; then
        VAL=$MIN
    fi
    
    echo -n $VAL > /sys/class/backlight/nvidia_backlight/brightness
    /etc/acpi/events/nvidia-brightness-down:
    Code:
    event=video LCD 00000087 00000000
    action=/etc/acpi/nvidia_backlight_down.sh
    /etc/acpi/events/nvidia-brightness-up:
    Code:
    event=video LCD 00000086 00000000
    action=/etc/acpi/nvidia_backlight_up.sh
    Then you have to make sure those scripts are executable:
    Code:
    sudo chmod +x /etc/acpi/nvidia_backlight_up.sh
    sudo chmod +x /etc/acpi/nvidia_backlight_down.sh
    You also need to have permissions to edit the brightness file itself (this was one of the problems I ran into -- the keys were running the script, but I didn't have permission to change the file so nothing happened). I'm not sure if this is the "proper" way to do things, but it at least works. Someone can correct me if I'm wrong and I'll edit this post:
    Code:
    sudo chown YOURUSERNAME /sys/class/backlight/nvidia_backlight/brightness
    That should work for a Lenovo Y500. It's not quite a perfect workaround -- the brightness actually increases and decreases slightly past what the indicator shows, but it basically works and I think you'll be quite happy with it.

    If it works for you exactly as I've written it up, please report back. If there was anything I didn't quite explain or that didn't quite work, please report back so I can edit this post for others as well.



    Hello, first thank you very much, I followed your instructions and it works, but my problem now is the maximum I can reach brightness is very low.

    (Then copy and paste the error of someone that MS is the same one I have!)

    When I boot up, this is my brightness level.


    Code:
    $ cat /sys/class/backlight/nvidia_backlight/brightness
     2340
    $ cat /sys/class/backlight/nvidia_backlight/actual_brightness 
    2339
    $ cat /sys/class/backlight/nvidia_backlight/max_brightness
    2339
    After I adjust brightness, my "max_brighness" was changed

    Code:
    $ cat /sys/class/backlight/nvidia_backlight/max_brightness
    127
    and I cannot increase brightness beyond this value.

    I tried changing the file permissions with various commands from shell but not let me change that value. I also disabled the nvidiabl but once I do I can not find again the path (Of course because I've disabled).

    No more to do with this problem, can you help me?
    Last edited by Bushido Samurai; March 18th, 2013 at 09:21 PM.

  5. #55
    Join Date
    Feb 2013
    Beans
    5

    Re: Lenovo Ideapad Y500 LiveUSB Problem

    Quote Originally Posted by Bushido Samurai View Post
    find a solution?? I have the same error but I have searched for 2 days without any solution!
    Not yet, I think I spent too much time solving this problem, and because I'm a beginner, I cannot code it myself. The brightness problem for this machine happened to occur on windows and was fixed by a newer driver, so right now I'm just laying down waiting for the new driver and use Virtualbox on windows instead. (though the performance is a bit unpleasant)

    Hope to see the solution soon.

  6. #56
    Join Date
    Feb 2013
    Beans
    5

    Re: Lenovo Ideapad Y500 LiveUSB Problem

    I've finally found my solution. beatgeek gave a clue for me.

    Quote Originally Posted by beatgeek View Post
    I installed version .76 of nvidiabl and this solved the problem. Ah my eyes can finally take a rest!

    Now I'm using "nvidiabl-dkms_0.76_all.deb" and it works now.

  7. #57
    Join Date
    Jan 2007
    Beans
    Hidden!

    Re: Lenovo Ideapad Y500 LiveUSB Problem

    Quote Originally Posted by jowsingchue View Post
    I've finally found my solution. beatgeek gave a clue for me.




    Now I'm using "nvidiabl-dkms_0.76_all.deb" and it works now.
    I'm still having the same problem with the maximum brightness being limited to 127 on the Y500. I've tried version 0.76 and version 0.80. Does anyone know how I might solve this problem?

  8. #58
    Join Date
    Feb 2013
    Beans
    5

    Re: Lenovo Ideapad Y500 LiveUSB Problem

    Quote Originally Posted by rorschachwalter View Post
    The resolution issue is because the driver didn't properly install. Make sure you have "dkms" installed first as well as "linux-headers-`uname -r`" first. If you have "linux-headers-generic" installed, the nvidia driver will not work. So if you're still in that boat, you don't have to reinstall Ubuntu. Just remove the nvidia driver (and linux-headers-generic just for the heck of it), install linux-headers-`uname -r` first, then reinstall nvidia. Everything should work fine.

    First, make sure nvidiabl is being loaded automatically by adding a line saying simply "nvidiabl" to /etc/modules.

    The scripts I posted above weren't quite right, but they were really close. Here's what they should be:
    /etc/acpi/nvidia_backlight_up.sh:
    Code:
    #!/bin/sh
    
    test -f /sys/class/backlight/nvidia_backlight/brightness || exit 0
    
    VAL=`cat /sys/class/backlight/nvidia_backlight/actual_brightness`
    MAX=`cat /sys/class/backlight/nvidia_backlight/max_brightness`
    STEP=10
    
    VAL=`expr $VAL + $STEP`
    
    if [ $VAL -gt $MAX ]; then
        VAL=$MAX
    fi
    
    echo -n $VAL > /sys/class/backlight/nvidia_backlight/brightness
    /etc/acpi/nvidia_backlight_down.sh:
    Code:
    #!/bin/sh
    
    test -f /sys/class/backlight/nvidia_backlight/brightness || exit 0
    
    VAL=`cat /sys/class/backlight/nvidia_backlight/actual_brightness`
    MIN=0
    STEP=10
    
    VAL=`expr $VAL - $STEP`
    
    if [ $VAL -lt $MIN ]; then
        VAL=$MIN
    fi
    
    echo -n $VAL > /sys/class/backlight/nvidia_backlight/brightness
    /etc/acpi/events/nvidia-brightness-down:
    Code:
    event=video LCD 00000087 00000000
    action=/etc/acpi/nvidia_backlight_down.sh
    /etc/acpi/events/nvidia-brightness-up:
    Code:
    event=video LCD 00000086 00000000
    action=/etc/acpi/nvidia_backlight_up.sh
    Then you have to make sure those scripts are executable:
    Code:
    sudo chmod +x /etc/acpi/nvidia_backlight_up.sh
    sudo chmod +x /etc/acpi/nvidia_backlight_down.sh
    You also need to have permissions to edit the brightness file itself (this was one of the problems I ran into -- the keys were running the script, but I didn't have permission to change the file so nothing happened). I'm not sure if this is the "proper" way to do things, but it at least works. Someone can correct me if I'm wrong and I'll edit this post:
    Code:
    sudo chown YOURUSERNAME /sys/class/backlight/nvidia_backlight/brightness
    That should work for a Lenovo Y500. It's not quite a perfect workaround -- the brightness actually increases and decreases slightly past what the indicator shows, but it basically works and I think you'll be quite happy with it.

    If it works for you exactly as I've written it up, please report back. If there was anything I didn't quite explain or that didn't quite work, please report back so I can edit this post for others as well.
    Hi, b3nj4m.
    Base on the above, what I do is:

    1. Uninstall all nvidia components and linux-headers-generic
    2. Install neccesery things
    Code:
    sudo apt-get install dkms linux-headers-`uname -r`
    sudo apt-get install nvidia-current-updates
    sudp dpkg -i nvidiabl-dkms_0.76_all.deb
    3. Add "nvidiabl" (without quotes) to /etc/modules
    4. Edit the script files above and make them executable

    Reboot, and that should do it.
    Bad English, sorry.

  9. #59
    Join Date
    Mar 2006
    Beans
    12

    Re: Lenovo Ideapad Y500 LiveUSB Problem

    For those who are having a problem with maximum brightness, which version of the NVIDIA driver are you using? When I tried the most recent version (313.26 I think), I had problems with the brightness being too low (and it kept switching between high and low brightness on its own for no reason). I switched back to version-current-updates (304.88... I'm actually running linux mint 13, based on ubuntu precise) and it works perfectly.

  10. #60
    Join Date
    Feb 2013
    Beans
    5

    Re: Lenovo Ideapad Y500 LiveUSB Problem

    Hi, beatgeek.

    Do you have any issue with Lenovo Easycamera?
    Mine when black for no reason, I have to reinstall OS in order to use it again.

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