Ноутбук MSI c двойной графикой Intel + NVidia. После установки Debian 9 xfce сразу не работала часть функциональных клавиш, в том числе, клавиши регулировки яркости. Подсветка экрана ноутбука на максимуме, ползунок яркости отсутствует.
При установке драйверов видеоадаптер NVidia идентифицировался корректно и полностью функционален. У видеоадаптера Intel наличие драйвера не описывается, монитор имеет единственное разрешение 1920x1080 0.00 (отсутствует выбор возможных разрешений и частот)
[spoiler=подробности по ноуту:]
$ inxi -Fxz
System: Host: darkgreen Kernel: 4.9.0-7-amd64 x86_64 (64 bit gcc: 6.3.0)
Desktop: Xfce 4.12.3 (Gtk 2.24.31) Distro: Debian GNU/Linux 9 (stretch)
Machine: Device: laptop System: Micro-Star product: GP73 Leopard 8RD v: REV:1.0
Mobo: Micro-Star model: MS-17C6 v: REV:1.0
UEFI [Legacy]: American Megatrends v: E17C6IMS.105 date: 05/08/2018
Battery BAT1: charge: 44.1 Wh 91.8% condition: 48.0/49.0 Wh (98%) model: MSI MS-17C6 status: N/A
CPU: Hexa core Intel Core i7-8750H (-HT-MCP-) cache: 9216 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 26496
clock speeds: max: 4100 MHz 1: 878 MHz 2: 876 MHz 3: 903 MHz 4: 821 MHz 5: 879 MHz
6: 869 MHz 7: 1240 MHz 8: 887 MHz 9: 869 MHz 10: 1028 MHz 11: 868 MHz 12: 808 MHz
Graphics: Card-1: Intel Device 3e9b bus-ID: 00:02.0
Card-2: NVIDIA GP107M [GeForce GTX 1050 Ti Mobile] bus-ID: 01:00.0
Display Server: X.org 1.19.2 drivers: vesa (unloaded: modesetting,fbdev)
tty size: 103x54 Advanced Data: N/A for root
Audio: Card Intel Cannon Lake PCH cAVS driver: snd_hda_intel bus-ID: 00:1f.3
Sound: Advanced Linux Sound Architecture v: k4.9.0-7-amd64
Network: Card-1: Intel Wireless-AC 9560 [Jefferson Peak] bus-ID: 00:14.3
IF: N/A state: N/A mac: N/A
Card-2: Qualcomm Atheros Killer E2400 Gigabit Ethernet Controller
driver: alx port: 3000 bus-ID: 02:00.0
IF: enp2s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives: HDD Total Size: 1128.2GB (6.4% used)
ID-1: /dev/sda model: KINGSTON_RBUSNS8 size: 128.0GB temp: 44C
ID-2: /dev/sdb model: WDC_WD10SPZX size: 1000.2GB temp: 44C
Partition: ID-1: / size: 117G used: 8.9G (9%) fs: ext4 dev: /dev/sda1
ID-2: /home size: 246G used: 59G (26%) fs: ext4 dev: /dev/sdb5
Sensors: System Temperatures: cpu: 46.0C mobo: N/A
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 267 Uptime: 31 min Memory: 1062.9/15895.2MB
Init: systemd runlevel: 5 Gcc sys: 6.3.0 Client: Shell (bash 4.4.121) inxi: 2.3.5
$ inxi -G
Graphics: Card-1: Intel Device 3e9b
Card-2: NVIDIA GP107M [GeForce GTX 1050 Ti Mobile]
Display Server: X.org 1.19.2 drivers: vesa (unloaded: modesetting,fbdev)
tty size: 103x54 Advanced Data: N/A for root
$ lspci -k
00:02.0 VGA compatible controller: Intel Corporation Device 3e9b
Subsystem: Micro-Star International Co., Ltd. [MSI] Device 121a
01:00.0 3D controller: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile] (rev ff)
Kernel modules: nvidia
$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected 1920x1080+0+0 0mm x 0mm
1920x1080 0.00*
$ xrandr --current --verbose | grep Brightness
xrandr: Failed to get size of gamma for output default
$ xbacklight -dec 20
No outputs have backlight property
# dmesg | grep i915
[ 38.507689] snd_hda_codec_hdmi hdaudioC0D2: No i915 binding for Intel HDMI/DP codec
[ 38.507833] snd_hda_codec_hdmi hdaudioC0D2: No i915 binding for Intel HDMI/DP codec
# uname -a
Linux darkgreen 4.9.0-7-amd64 #1 SMP Debian 4.9.110-3+deb9u1 (2018-08-03) x86_64 GNU/Linux
# cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux 9 (stretch)"
NAME="Debian GNU/Linux"
VERSION_ID="9"
VERSION="9 (stretch)"
ID=debian
HOME_URL="
https://www.debian.org/"
SUPPORT_URL="
https://www.debian.org/support"
BUG_REPORT_URL="
https://bugs.debian.org/"
# cat /etc/X11/xorg.conf
cat: /etc/X11/xorg.conf: Нет такого файла или каталога
# dmesg | egrep -i --color 'errors|critical|failed'
[ 0.247554] ACPI Error: Method parse/execution failed [\_SB.PCI0.RP04.PXSX] (Node ffff8a2eacdbe668), AE_NOT_FOUND (20160831/psparse-543)
[ 0.251941] ACPI Error: Method parse/execution failed [\_SB.PCI0.RP08.PXSX] (Node ffff8a2eacdbded8), AE_NOT_FOUND (20160831/psparse-543)
[ 0.256322] ACPI Error: Method parse/execution failed [\_SB.PCI0.RP12.PXSX] (Node ffff8a2eacdbba00), AE_NOT_FOUND (20160831/psparse-543)
[/spoiler]
Надеюсь на подсказки сообщества - в каком направлении вести поиск решения данного затруднения, которое позволит сберечь глаза. Заранее спасибо.