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Lenovo 500 low brightness

Hi, I'm using ubuntu 16.04 for lenovo z500 laptop (3rd intel hd graphics / 3D controller: NVIDIA Corporation GK208M [GeForce GT 740M]). I don't have issues with drivers but the problem it's not fully bright. I tried xcalib and xbacklight but i can't increse brightness or contrast because it is already 100%. White color seems to be grey. I'ts working fine using Windows 10 but I want to use Ubuntu

Some info:

Code:

helektron@helektron-laptop:~$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-4.4.0-28-generic root=UUID=7326329b-56fc-4136-8a79-8a1747f603dc ro quiet splash

Code:

helektron@helektron-laptop:~$ lspci -k | grep -A3 VGA
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
    Subsystem: Lenovo 3rd Gen Core processor Graphics Controller
    Keel driver in use: i915
    Keel modules: i915

Code:

helektron@helektron-laptop:~$ lspci -k | grep -A3 NVIDIA
01:00.0 3D controller: NVIDIA Corporation GK208M [GeForce GT 740M] (rev a1)
    Subsystem: Lenovo GK208M [GeForce GT 740M]
    Keel driver in use: nvidia
    Keel modules: nvidiafb, nouveau, nvidia_361

Code:

helektron@helektron-laptop:~$ for i in /sys/class/backlight/*; do echo $i; cat $i/brightness; cat $i/max_brightness; cat $i/actual_brightness; done
/sys/class/backlight/intel_backlight
976
976
976

Code:

helektron@helektron-laptop:~$ pastebinit /var/log/Xorg.0.log
http://paste.ubuntu.com/18159486/

Can you please help me?

Thanks a lot.

برچسب: نویسنده: استخدام کار تاريخ: پنجشنبه 10 تير 1395 ساعت: 18:38

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