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Old 02-15-2012, 06:15 AM   #1
Lumify
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Acer 5755G-6823 Laptop brightness buttons don't work


I've tried changing my laptop brightness with the Fn+up/down keys on several distros and it has never worked. It only works in Windows. I'm on Debian Testing now. Ideas?

Here's lspci's output:
Code:
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04)
01:00.0 VGA compatible controller: nVidia Corporation GF108 [GeForce GT 540M] (rev a1)
02:00.0 Ethernet controller: Broadcom Corporation NetLink BCM57785 Gigabit Ethernet PCIe (rev 10)
02:00.1 SD Host controller: Broadcom Corporation NetXtreme BCM57765 Memory Card Reader (rev 10)
02:00.2 System peripheral: Broadcom Corporation Device 16be (rev 10)
02:00.3 System peripheral: Broadcom Corporation Device 16bf (rev 10)
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 (rev 34)
05:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)
uname -a
Code:
Linux debian 3.1.0-7.dmz.1-liquorix-amd64 #1 ZEN SMP PREEMPT Wed Jan 4 21:13:24 CST 2012 x86_64 GNU/Linux
There's some additional info...

edit 2/21 - When I use the brightness keys, the brightness icon pops up in the middle of the screen. It just doesn't change the brightness. This leads me to believe that Debian recognizes the input, but it just doesn't know what to do with the input. Is there any way to change the brightness manually?

Last edited by Lumify; 02-21-2012 at 09:53 AM.
 
Old 02-17-2012, 09:23 AM   #2
Lumify
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Bump?
 
Old 02-20-2012, 01:03 AM   #3
AlienwareM17x
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Is possible that your system is not the original machine comes with the system so sometimes the Fn key is useless, you can enter the Control Panel → Hardware and Sound> Power Options. Which has a brightness adjustment. the win7 words below that part of the window

Last edited by onebuck; 02-20-2012 at 08:55 AM. Reason: remove redirection ad
 
Old 02-20-2012, 08:57 AM   #4
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Quote:
Originally Posted by AlienwareM17x View Post
Is possible that your system is not the original machine comes with the system so sometimes the Fn key is useless, you can enter the Control Panel → Hardware and Sound> Power Options. Which has a brightness adjustment. the win7 words below that part of the window
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Old 03-13-2012, 12:58 AM   #5
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Bump. I'm giving Linux another shot and I have to fix this to make it practical.
 
Old 03-21-2012, 07:25 AM   #6
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Bump.
 
  


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