https://answers.launchpad.net/ubuntu/+source/ubuntu-docs/+question/285285 Supposedly this is answered, but I think it was because of the duplication.
Here's the output of this command $sudo dmidecode -t 1; lsb_release -a; uname -a # dmidecode 2.12 SMBIOS 2.7 present. Handle 0x0001, DMI type 1, 27 bytes System Information Manufacturer: Dell Inc. Product Name: OptiPlex 7010 Version: 01 Serial Number: ............. UUID: ,,,,,,,,,,,,,,,,,, Wake-up Type: Power Switch SKU Number: OptiPlex 7010 Family: Not Specified No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.3 LTS Release: 14.04 Codename: trusty Linux kevin-desktop 3.19.0-49-generic #55~14.04.1-Ubuntu SMP Fri Jan 22 11:24:31 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Documentation Packages, which is subscribed to ubuntu-docs in Ubuntu. https://bugs.launchpad.net/bugs/1545266 Title: screen brightness slider has no effect Status in unity-control-center package in Ubuntu: Incomplete Bug description: Trusty Tahr 14.04 LTS, seems to be fully updated f.lux also has no effect. Also when i try to do sudo echo 50 > /sys/class/backlight/acpi_video0/brightness then it says 'bash: brightness: permission denied'. (From this page: http://pastebin.com/HzzHrS2g). product: OptiPlex 7010 (OptiPlex 7010) *-cpu description: CPU product: Intel(R) Core(TM) i3-3240 CPU @ 3.40GHz *-pci description: Host bridge product: Xeon E3-1200 v2/3rd Gen Core processor DRAM Controller vendor: Intel Corporation *-display description: VGA compatible controller product: Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller I would love to help provide some more help on my dual monitor setup. I found this documentation: https://wiki.ubuntu.com/X/Config/Resolution It says I should run $gnome-display-properties. Seems to be out of date. gnome-display-properties: command not found I guess it would be annoying to say it's a security vulnerability although if my screen isn't dim someone could more easily look through the window and see what I am typing on the screen. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-control-center/+bug/1545266/+subscriptions -- Mailing list: https://launchpad.net/~documentation-packages Post to : documentation-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~documentation-packages More help : https://help.launchpad.net/ListHelp
