ls /sys/class/backlight/
ideapad intel_backlight
inxi -Fxz
System: Host: Lenovo-linux Kernel: 4.4.0-34-generic x86_64 (64 bit gcc: 5.3.1)
Desktop: MATE 1.14.1 (Gtk 3.18.9-1ubuntu3.1)
Distro: Linux Mint 18 Sarah
Machine: System: LENOVO product: 20202 v: Lenovo IdeaPad Z500
Mobo: LENOVO model: INVALID v: 00000000INVALID
Bios: LENOVO v: 71CN51WW(V1.21) date: 07/12/2013
CPU: Dual core Intel Core i5-3230M (-HT-MCP-) cache: 3072 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 10376
clock speeds: max: 3200 MHz 1: 1199 MHz 2: 1577 MHz 3: 1240 MHz
4: 1205 MHz
Graphics: Card: Intel 3rd Gen Core processor Graphics Controller
bus-ID: 00:02.0
Display Server: X.Org 1.18.3 drivers: intel (unloaded: fbdev,vesa)
Resolution: 1366x768@59.96hz
GLX Renderer: N/A GLX Version: N/A Direct Rendering: N/A
Audio: Card Intel 7 Series/C210 Series Family High Definition Audio Controller
driver: snd_hda_intel bus-ID: 00:1b.0
Sound: Advanced Linux Sound Architecture v: k4.4.0-34-generic
Network: Card-1: Realtek RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
driver: r8169 v: 2.3LK-NAPI port: 2000 bus-ID: 02:00.0
IF: enp2s0 state: down mac: <filter>
Card-2: Intel Centrino Wireless-N 2230
driver: iwlwifi bus-ID: 03:00.0
IF: wlp3s0 state: up mac: <filter>
Card-3: Ralink RT2870/RT3070 Wireless Adapter
driver: rt2800usb v: 2.3.0 usb-ID: 003-002
IF: wlxc04a0025e9e5 state: N/A mac: N/A
Drives: HDD Total Size: 1000.2GB (1.7% used)
ID-1: /dev/sda model: ST1000LM014 size: 1000.2GB
Partition: ID-1: / size: 477G used: 13G (3%) fs: ext4 dev: /dev/sda6
ID-2: swap-1 size: 4.10GB used: 0.00GB (0%) fs: swap dev: /dev/sda5
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 48.0C mobo: N/A
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 230 Uptime: 5 min Memory: 800.4/7839.0MB
Init: systemd runlevel: 5 Gcc sys: 5.4.0
Client: Shell (bash 4.3.421) inxi: 2.2.35