Hi,
I've been using debian 8 from some time, with version 8.9 on dell inspiron 5000 series. Brightness control is missing from the beginning.
I installed xbacklight, but of no use.
ls /sys/class/backlight returns empty.
Also: /etc/default/grub reads like this:
GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet"
GRUB_CMDLINE_LINUX="initrd=/install/gtk/initrd.gz"
My lspci output is as follows:
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers (rev 08)
00:02.0 VGA compatible controller: Intel Corporation Skylake GT2 [HD Graphics 520] (rev 07)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 (rev 21)
00:15.1 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #1 (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-LP LPC Controller (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 Network controller: Intel Corporation Wireless 3160 (rev 83)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast Ethernet controller (rev 07)
Any pointers will be greatly appreciated.
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[SOLVED] Brightness Control missing on Debian 8
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- Posts: 3
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[SOLVED] Brightness Control missing on Debian 8
Last edited by bored_and_tired on 2017-11-27 13:03, edited 2 times in total.
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Re: Brightness Control missing on Debian 8
This article at the ArchLinux Wiki might help: https://wiki.archlinux.org/index.php/ba ... _backlight
Scroll down to Backlight utilities, and try the xbacklight command listed there.
Scroll down to Backlight utilities, and try the xbacklight command listed there.
Registered GNU/Linux user #170078
Go ask google before you ask on these boards.
It it isn't broken, Tweak It !!!
Go ask google before you ask on these boards.
It it isn't broken, Tweak It !!!
- Head_on_a_Stick
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Re: Brightness Control missing on Debian 8
Skylake won't work with Debian jessie unless (selected) jessie-backports are employed, see this guide:bored_and_tired wrote:00:02.0 VGA compatible controller: Intel Corporation Skylake GT2 [HD Graphics 520] (rev 07)
https://forums.bunsenlabs.org/viewtopic.php?id=1185
Your video hardware does support Debian stretch (9.2) however so you should probably use that instead.
deadbang
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Re: Brightness Control missing on Debian 8
Thank you Both!
@Head_on_a_stick, I followed the article at bunsenlabs, installed backports and I can actually now see brightness control. Brightness control is now working fine!
(my only complaint is my wifi is missing.. I will try to fix it, and if it doesn't work I'll create a new post.
Thanks so much! This is my first post at Debian forum and happy that I got solution and is working!!
@Head_on_a_stick, I followed the article at bunsenlabs, installed backports and I can actually now see brightness control. Brightness control is now working fine!
(my only complaint is my wifi is missing.. I will try to fix it, and if it doesn't work I'll create a new post.
Thanks so much! This is my first post at Debian forum and happy that I got solution and is working!!
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- Posts: 3
- Joined: 2017-11-22 13:24
Re: Brightness Control missing on Debian 8
I did this -
As mentioned in https://unix.stackexchange.com/question ... -on#354908
Wifi working! Everything resolved. Problem Solved!
Code: Select all
apt-get -t jessie-backports install firmware-iwlwifi
modprobe iwlwifi
Wifi working! Everything resolved. Problem Solved!