Acer Switch 10E SW3-016 - Brightness always Max

[heyitsabi]

Hey guys, this is my first time getting out of the windows bandwagon and switching to Linux.

I made the laptop work with linux mint by using the line - 'i915.modeset=0' in grub. From what I understand I disabled the intel drivers to get the laptop working, I might be wrong. I can not control the brightness now, https://gist.github.com/franga2000/2154d09f864894b8fe84 This website helped me a lot to make it work, though my solution was a bit different than what the guide above said, I have written my solution at the end of that website as well, maybe it might help someone else.

Need help with:
1. Controlling brightness
2. Maybe graphics drivers - installed driver as per Synaptic Package Manager is - xserver-xorg-video-intel v 2:2.99.917+git201712229-1

[Pjotr]

Brightness: try this progressive scheme:
https://sites.google.com/site/easylinux ... adjustable
(item 4 and further, left column)

[heyitsabi]

Brightness: try this progressive scheme:
https://sites.google.com/site/easylinux ... adjustable
(item 4 and further, left column)

Thank you for the suggestion. Sadly it didn't work.

No. 4 - I did not find any brightness slider
No. 4.2 adding those line in grub also didn't work
No. 4.3 after installing xbacklight and trying to set it to 70 gives the following output - "No outputs have backlight property"
No. 4.4 following these "lspci | grep -i vga and sudo setpci -s 00:02.0 F4.B=70 - the code runs but nothing happens.
No. 4.5 xrandr method returns - "Failed to get size of gamma for output default"

[roblm]

Sometimes xbacklight will only work when it’s used with a specific kernel parameter.

Try testing these additional parameters in the grub file:

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acpi_osi='!Windows 2012'
acpi_osi=
video.use_native_backlight=1

Post the output of these commands: inxi -SMCGx and ls /sys/class/backlight/*/*

[heyitsabi]

Sometimes xbacklight will only work when it’s used with a specific kernel parameter.

Try testing these additional parameters in the grub file:

Code: Select all

acpi_osi='!Windows 2012'
acpi_osi=
video.use_native_backlight=1

Post the output of these commands: inxi -SMCGx and ls /sys/class/backlight/*/*

I added the provided code to grub, but when I ran:

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sudo update-grub

I got this as output:

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/usr/sbin/grub-mkconfig: 36: /etc/default/grub: video.use_native_backlight=1: not found

Step 2:
Output of inxi -SMCGx:

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System:    Host: NoInternet Kernel: 4.15.0-36-generic x86_64
           bits: 64 gcc: 7.3.0
           Desktop: MATE 1.20.1 (Gtk 3.22.30-1ubuntu1)
           Distro: Linux Mint 19 Tara
Machine:   Device: laptop System: Acer product: Aspire SW3-016 v: V1.14 serial: N/A
           Mobo: Acer model: Gummi CHT v: V1.14 serial: N/A
           UEFI: Insyde v: V1.14 date: 03/28/2016
CPU:       Quad core Intel Atom x5-Z8300 (-MCP-) 
           arch: Airmont rev.3 cache: 1024 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 11520
           clock speeds: max: 1840 MHz 1: 1110 MHz 2: 646 MHz 3: 1482 MHz
           4: 1230 MHz
Graphics:  Card: Intel Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Configuration Registers
           bus-ID: 00:02.0
           Display Server: x11 (X.Org 1.19.6 )
           drivers: fbdev (unloaded: modesetting,vesa)
           Resolution: 1280x800@76.00hz
           OpenGL: renderer: llvmpipe (LLVM 6.0, 128 bits)
           version: 3.3 Mesa 18.0.5 Direct Render: Yes

Output of ls /sys/class/backlight/*/*:

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ls: cannot access '/sys/class/backlight/*/*': No such file or directory

Once I saw that the above mentioned ls command could not find backlight, I remembered installed xbacklight, I tried searching for xbacklight instead of backlight with the code

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ls /sys/class/xbacklight/*/*
ls: cannot access '/sys/class/xbacklight/*/*': No such file or directory

Simply trying to run xbacklight works as in the package is installed but it returns:

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No outputs have backlight property

[roblm]

Post the output of these commands:

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ls /proc/acpi/*/*
ls /sys/devices/platform/*/*/*

[heyitsabi]

Output of

ls /proc/acpi/*/*

is:

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LID

and

the output of

ls /sys/devices/platform/*/*/*

is:

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Your message contains 139881 characters.
The maximum number of allowed characters is 60000.

But luckily I have done enough research to find a way to provide the output via termbin

here is the output of the above command: http://termbin.com/ekf8

[roblm]

Unfortunately, there is no backlight folder. Usually it is found in /sys/class but sometimes in /proc/acpi or /sys/devices/platform.

[heyitsabi]

Unfortunately, there is no backlight folder. Usually it is found in /sys/class but sometimes in /proc/acpi or /sys/devices/platform.

oh no. Well thanks for trying, appreciate it a lot.