0
votes
0answers
48 views

Brightness not changing Dell 15r SE and ubuntu 12.04

With my current laptop I can't change my brightness anymore I tried xbacklight -set 50 (nothing happened) and also changed this line grub_cmdline_linux_default= "quiet splash" to ...
0
votes
1answer
324 views

Ubuntu 14.04LTS hangs when i change brightness of my display on Dell N5010 laptop

I have dell n5010 my system hang when I try to change brightness of the display and this happen only when my system on battery please help how to solve this problem
0
votes
2answers
4k views

How should I control the brightness on my Ubuntu 14.04 system? [duplicate]

Brightness control button is changing brightness value in file /sys/class/backlight/acpi_video0/brightness, but screen brightness is not changing.
0
votes
1answer
83 views

Dell laptop screen brightness is not working after upgrade from 12.04 to 13.10

I tried with GRUB_CMLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" and sudo update-grub but did not worked.Please help me out
0
votes
0answers
105 views

Ubuntu 13.10 on Dell Inspirion N5010: Problems with Bluetooth and brightness

I install Ubuntu 13.10 64bit on my Dell N5010 laptop and I have also installed proprietary drivers for my ATI Radeon HD5650 and wireless card. I have noticed that Ubuntu didn't recognized my ...
0
votes
1answer
201 views

Dell Inspiron 14r Display Problem- Tried Everything

I know there are a million posts about this, but I have been on this forum for hours and haven't found a solution to my problem. Like many people, my brightness keys don't work and I am looking for a ...
2
votes
2answers
2k views

Ubuntu 13.10 and Dell Inspiron 7520 SE (Intel 4000 and ATI radeon HD 7730m)

I installed 13.10 and i have problems with my display. Everything else works fine. I cant control my brightness. I thought the graphics driver is the problem. So i went to software updates, switched ...
1
vote
1answer
2k views

Multiple problems with my Dell Inspiron 15R SE 7520 [closed]

I'm having some problems with my Dell Inspiron 15R SE 7520 laptop. I hope you can help me with this. I searched a lot, but found no working solutions. Specs: AMD RADEON HD 7730M + Intel HD 4000 128 ...
2
votes
1answer
211 views

Cannot change brightness of my laptop

My laptop is a DELL 3521 with dual graphic cards, which usually cause some problems, and I have switched off the AMD Radeon card. Now, when I want to turn the brightness down by dragging the ...
0
votes
1answer
749 views

Dell Inspiron 5220 Screen Brightness buttons

I've installed Ubuntu 13.04, everything seems fine except using the FN-key to change the laptop's brightness. It just stays permanently on full brightness. Even if I go into System Settings and ...
0
votes
2answers
3k views

Dell laptop display brightness problem

I am using Dell inspiron 15 and Ubuntu 13.04. I have hot keys on my keyboard to adjust display brightness and they work fine.But the problem is, as soon as I switch on the laptop the brightness is set ...
0
votes
1answer
304 views

Brightness adjustment crashes 13.04

I'm using ubuntu 13.04 64 bit on a Dell Studio 1558 with a ATI/AMD 5400 series graphics card running the AMD 13.4 graphics drivers and sometimes when I try to adjust the screen brightness, the entire ...
2
votes
2answers
555 views

screen brightness reduction software?

i'm a total new user of ubuntu. I use ubuntu 12.04 and my laptop is DELL studio 1558. the problem is the, the minimum brightness in my laptop is still pretty bright when using the computer in dark ...
1
vote
1answer
450 views

Dell display problem Ubuntu 13.04

Since I upgrade from ubuntu 12.10 to 13.04 I can't change the brightness of the display, it remain in the darkest possible mode. I have a Dell 3721 laptop. Any advice? @Dell:~$ lspci -nn | grep VGA ...
1
vote
2answers
932 views

Unable to change the brightness on my Dell XPS 15 (L502X)

I am using ubuntu 13.04 and I am unable to change the brightness on my laptop and need a bit a help.
0
votes
1answer
221 views

How do I get the brightness buttons on a Dell Inspiron N4010 working?

After 13.04 update the brightness control and even brightness in setting have stopped working. The brightness is on full and doesn't decrease. So far sound and wifi is working. Any settings or ...
1
vote
2answers
2k views

Screen brightness very dim on a Dell XPS 13 (2013)

I just installed Xubuntu 13.04 on a new Dell XPS 13 Ultrabook. When I boot up the screen brightness is EXTREMELY dim. Adjusting the screen brightness doesn't do anything. This is obviously a very new ...
2
votes
2answers
2k views

brightness not working on 13.04 upgrade on dell xps 13 ultrabook

Just upgraded from 12.10 to 13.04 on Dell xps13 ultrabook and the display is very dim and cannot be changed using f'n keys or from system settings. This ultrabook uses Intel's ivybridge mobile. ...
1
vote
1answer
214 views

How to turn down the brightness on my Dell mini laptop?

The keys that show the brightness symbols are 9 and 0, but when I hold down Shift and press these, it only shows ( and ). Help!
1
vote
1answer
2k views

Screen flickering on Dell XPS when using mid-range brightness values

After a fresh install of Ubuntu, I discovered the function keys for screen brightness control (Fn+F4 and Fn+F5 in that case) are not functioning. Digging around here, I managed to get them to work by ...
2
votes
2answers
4k views

Brightness keys F4 and F5 not working on Dell XPS 15.6 Laptop

Please provide me a solution how to fix this?
1
vote
2answers
773 views

Contrast Getting Reset to its Maxmum Value After Restarting System

Recently i installed Ubuntu 12.04 on my Laptop "Dell Inspiron-N4010". i am facing problem with my contrast control,after restarting my system contrast is getting reset to its max value. so each time ...
2
votes
1answer
1k views

Few problems on Dell xps 15 L502 (screen brightness, bluetooth, wi-fi power management problems)

I am running ubuntu 11.10 32bit in my dell xps L502. Working well except for a few problems. Blue tooth always turned on reboot,I would like to turn it off always. Screen brightness is not saved. ...
0
votes
1answer
1k views

brightness settings on Ubuntu 11.10 64bit, Hardware Dell 1555 with ATI Mobility Radeon HD4570

My laptop Dell studio 1555 has Ubuntu 11.10. At every boot I have to set the brightness level as it gets reset to 100%. Could you please help me out to find a way not to change it every time? Thank ...
1
vote
0answers
752 views

Brightness issues on a Dell Inspiron N7010 [closed]

I have installed Ubuntu 11.10 64-bit on my Dell Inspiron N7010 . When I'm away, the screen locks itself out and the screen goes black. However, when I move the mouse or press any keys it doesn't ...
2
votes
2answers
4k views

Adjusting brightness on Dell Vostro 3500 won't work

On a fresh install of Ubuntu 11.04, running Unity, I can't adjust the brightness via Fn+Up/Down. The brightness panel will show, and increase/decrease accordingly, but the actual brightness never ...
2
votes
0answers
322 views

Screen dimmed upon wake after standby [closed]

Sometimes upon resuming from standby I find my screen brightness dimmed to the lowest setting, even though the indicator says it's where I left it. If I use my brightness function keys I get the ...
2
votes
2answers
3k views

How to handle brightness trouble on dell inspiron i14R-2265?

Recently I've installed Ubuntu 10.10 32-bit on my Dell Inspiron i14r-2265, but it looks like brightness control is not working. I can change it "programmatically" (FN + brightness key), though actual ...
2
votes
5answers
3k views

Dell Inspiron n5010 Brightness Issue

I have recently installed Ubuntu 10.10 on my Dell Inspiron n5010 but screen brightness is not working, there is no effect of pressing fn+brightness keys. Is there anyway to fix it?