Ubuntu
acpi package

Is there an issue as to why we are unable to adjust the brightness?

Asked by Neil on 2012-07-03

I installed Ubuntu 12.04 last night. However, I found out that I cannot adjust the brightness of my screen everything is dim.

Question information

Language:
English Edit question
Status:
Solved
For:
Ubuntu acpi Edit question
Assignee:
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Solved by:
actionparsnip
Solved:
2012-07-06
Last query:
2012-07-06
Last reply:
2012-07-05
Miha Gašperšič (miha.gaspersic) said : #1

Hi there

you can set your brightness level in your system settings > Locking and brightness level. There you can set brigntness level for your divice. If you keyboard shortcuts does not work, then you probably have some issues with your drivers. Go search for it.

If that helps you solve your question, please mark thread as solved.

Regards,
Miha

Neil (corneilius-apple) said : #2

Thanks for that Miha. But I am afraid even if I set or move the level of brightness it does make any difference. I have a Samsung NP-MA02-PH N100 netbook which I use Ubuntu on. How can I get an specific driver for that.

actionparsnip (andrew-woodhead666) said : #3

Can you give the output of:

sudo lshw -C display; lsb_release -a; uname -a

Thanks

Neil (corneilius-apple) said : #4

***Here are the results

  *-display:0
       description: VGA compatible controller
       product: N10 Family Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 00
       width: 32 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:46 memory:f0200000-f027ffff ioport:18d0(size=8) memory:d0000000-dfffffff memory:f0000000-f00fffff
  *-display:1 UNCLAIMED
       description: Display controller
       product: N10 Family Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2.1
       bus info: pci@0000:00:02.1
       version: 00
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list
       configuration: latency=0
       resources: memory:f0280000-f02fffff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04 LTS
Release: 12.04
Codename: precise
Linux neil-N100 3.2.0-26-generic-pae #41-Ubuntu SMP Thu Jun 14 16:45:14 UTC 2012 i686 i686 i386 GNU/Linux

Neil (corneilius-apple) said : #6

Nice!!! Now I can adjust the brightness.

Now, how come everytime I reboot my netbook, the brightness goes to max?

Best actionparsnip (andrew-woodhead666) said : #7

You can add a command at startup to echo a value to a file and set the brightness. Do a little digging, the command will start with 'echo', if you hit a wall let us know and we'll see what we can find

Neil (corneilius-apple) said : #8

Thanks actionparsnip, that solved my question.