0. Install xbacklight: sudo apt-get install xbacklight
1. Go to System Settings > Tweaks > Shortcuts
2. Press the (+) sign at the lower left
3. Create a shortcut named "Brightness up"
4. Click the Shortcut button and press F7 to assign it (brightness increase key on the Chromebook)
5. In the Command field, type "xbacklight -inc 10"
6. Click on the green (+) button to save the shortcut.
7. Create a shortcut named "Brightness down"
8. Click the Shortcut button and press F6 to assign it (brightness increase key on the Chromebook)
9. In the Command field, type "xbacklight -dec 10"
10. Click on the green (+) button to save the shortcut.



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Posted by IB인포텍

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  1. GuruSek
    2014.04.04 16:11 신고
    댓글 주소 수정/삭제 댓글
    Привет всем.
  2. 2014.09.17 13:47
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    이용약관위배로 관리자 삭제된 댓글입니다.

How To: How to fix wrong automatic detection of external monitor resolution

Hello guys!

I hope some elementary guru can easily help me to fix my issue.

I have laptop (Dell Inspiron 1545 with intel GMA 4500MHD video)with Elementary OS installed on it, and then I plug my external monitor via VGA to it, elementary does not detect true resolution of my monitor - 1920x1080.

I found a nice workaround with manual adding of new mode in xrandr and further assigning it to my VGA interface:
I use cvt to get correct modeline:
Code:
sudo cvt 1920 1080 60
Then I add new mode:
Code:
sudo xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
After it I assign it to my interface:
Code:
sudoxrandr--addmodeVirtual11920x1080_60.00
It works rather well, but the problem is that I have to do it any time I turn on my computer, and it takes really a lot of time.

I tried to find reliable way to add this new mode via usr/share/X11/xorg.conf.d/10-monitor.conf - I found a solution there was suggested to place following code in this file:
Code:
Section "Monitor"
 Identifier "Monitor0"
 Modeline "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -HSync +Vsync
EndSection

Section "Screen"
 Identifier "Screen0"
 Device "VGA1"
 Monitor "Monitor0"
 DefaultDepth 24
  SubSection "Display" Depth 24
  Modes "1920x1080_60.00" "1024x768"
  EndSubSection
EndSection
For a pity, it didn't helped - my monitor still is considered by Elementary as mirrorred and maximum resolution which is available in System Settings->Display after reboot is 1024x768.


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Posted by IB인포텍

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