Linux Mint 16 Laptop Brightness Issues
Linux Mint 16 Petra 32bit(Xfce) - Sony Viao (Laptop) Model: VGNFS980
I have no 'function key' functionality to control brightness...
When I first booted the live version, the brightness was OK. Upon finishing the actual installation, the screen was dim. No proprietary Drivers are Found in 'driver manager'. Also, I've tried the Grub edits from several tutorials, with no luck.
Please Advise!
linux-mint lcd sony-vaio brightness laptop-display
asked Mar 12 '14 at 19:49
XilasXilas
612
add a comment |
Linux Mint 16 Petra 32bit(Xfce) - Sony Viao (Laptop) Model: VGNFS980
I have no 'function key' functionality to control brightness...
When I first booted the live version, the brightness was OK. Upon finishing the actual installation, the screen was dim. No proprietary Drivers are Found in 'driver manager'. Also, I've tried the Grub edits from several tutorials, with no luck.
Please Advise!
linux-mint lcd sony-vaio brightness laptop-display
asked Mar 12 '14 at 19:49
XilasXilas
612
add a comment |
Linux Mint 16 Petra 32bit(Xfce) - Sony Viao (Laptop) Model: VGNFS980
I have no 'function key' functionality to control brightness...
When I first booted the live version, the brightness was OK. Upon finishing the actual installation, the screen was dim. No proprietary Drivers are Found in 'driver manager'. Also, I've tried the Grub edits from several tutorials, with no luck.
Please Advise!
linux-mint lcd sony-vaio brightness laptop-display
asked Mar 12 '14 at 19:49
XilasXilas
612
Linux Mint 16 Petra 32bit(Xfce) - Sony Viao (Laptop) Model: VGNFS980
I have no 'function key' functionality to control brightness...
When I first booted the live version, the brightness was OK. Upon finishing the actual installation, the screen was dim. No proprietary Drivers are Found in 'driver manager'. Also, I've tried the Grub edits from several tutorials, with no luck.
Please Advise!
linux-mint lcd sony-vaio brightness laptop-display
linux-mint lcd sony-vaio brightness laptop-display
asked Mar 12 '14 at 19:49
XilasXilas
612
asked Mar 12 '14 at 19:49
XilasXilas
612
asked Mar 12 '14 at 19:49
XilasXilas
612
asked Mar 12 '14 at 19:49
XilasXilas
612
asked Mar 12 '14 at 19:49
XilasXilas
612
612
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
Try adjusting brightness manually:
echo 100 > /sys/class/backlight/acpi_video0/brightness
echo 80 > /sys/class/backlight/acpi_video0/brightness
echo 60 > /sys/class/backlight/acpi_video0/brightness
If that helps, then you can add one of the lines to /etc/rc.local before exit 0 line so it persists upon reboot.
answered Mar 12 '14 at 20:16
phoopsphoops
2,79731520
upon entering "echo 100 > /sys/class/backlight/acpi_video0/brightness" I received the message 'no such file or directory'
– Xilas
Mar 12 '14 at 22:14
this obviously means i dont have acpi_video installed. I did however manage to fix the brightness permantly by finding a file: sudo gedit /sys/class/backlight/sony/brightness - then setting it to 7. which is the max brightness intreval, apparently. An error did occur but it still works.
– Xilas
Mar 12 '14 at 22:45
add a comment |
I had the same problem in my Linux mint 17; I used the following step and it worked fine
Its not permanent fix but " if you can't do manually then try it through command line.
Check first
cd /sys/class/backlight/; ls
dell_backlight intel_backlight
then change to root permission
sudo su - root
Then enter the following command. Remember to change number as desired.
echo 250 > /sys/class/backlight/intel_backlight/brightness
Note - Don't change number below 100 at first time(might be completely dark). Try decreasing ur num slowly
edited Oct 15 '14 at 6:04
Kunal
1,59051726
answered Oct 15 '14 at 3:51
user379749user379749
1
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Try adjusting brightness manually:
echo 100 > /sys/class/backlight/acpi_video0/brightness
echo 80 > /sys/class/backlight/acpi_video0/brightness
echo 60 > /sys/class/backlight/acpi_video0/brightness
If that helps, then you can add one of the lines to /etc/rc.local before exit 0 line so it persists upon reboot.
answered Mar 12 '14 at 20:16
phoopsphoops
2,79731520
upon entering "echo 100 > /sys/class/backlight/acpi_video0/brightness" I received the message 'no such file or directory'
– Xilas
Mar 12 '14 at 22:14
this obviously means i dont have acpi_video installed. I did however manage to fix the brightness permantly by finding a file: sudo gedit /sys/class/backlight/sony/brightness - then setting it to 7. which is the max brightness intreval, apparently. An error did occur but it still works.
– Xilas
Mar 12 '14 at 22:45
add a comment |
Try adjusting brightness manually:
echo 100 > /sys/class/backlight/acpi_video0/brightness
echo 80 > /sys/class/backlight/acpi_video0/brightness
echo 60 > /sys/class/backlight/acpi_video0/brightness
If that helps, then you can add one of the lines to /etc/rc.local before exit 0 line so it persists upon reboot.
answered Mar 12 '14 at 20:16
phoopsphoops
2,79731520
upon entering "echo 100 > /sys/class/backlight/acpi_video0/brightness" I received the message 'no such file or directory'
– Xilas
Mar 12 '14 at 22:14
this obviously means i dont have acpi_video installed. I did however manage to fix the brightness permantly by finding a file: sudo gedit /sys/class/backlight/sony/brightness - then setting it to 7. which is the max brightness intreval, apparently. An error did occur but it still works.
– Xilas
Mar 12 '14 at 22:45
add a comment |
Try adjusting brightness manually:
echo 100 > /sys/class/backlight/acpi_video0/brightness
echo 80 > /sys/class/backlight/acpi_video0/brightness
echo 60 > /sys/class/backlight/acpi_video0/brightness
If that helps, then you can add one of the lines to /etc/rc.local before exit 0 line so it persists upon reboot.
answered Mar 12 '14 at 20:16
phoopsphoops
2,79731520
Try adjusting brightness manually:
echo 100 > /sys/class/backlight/acpi_video0/brightness
echo 80 > /sys/class/backlight/acpi_video0/brightness
echo 60 > /sys/class/backlight/acpi_video0/brightness
If that helps, then you can add one of the lines to /etc/rc.local before exit 0 line so it persists upon reboot.
answered Mar 12 '14 at 20:16
phoopsphoops
2,79731520
answered Mar 12 '14 at 20:16
phoopsphoops
2,79731520
answered Mar 12 '14 at 20:16
phoopsphoops
2,79731520
answered Mar 12 '14 at 20:16
phoopsphoops
2,79731520
2,79731520
upon entering "echo 100 > /sys/class/backlight/acpi_video0/brightness" I received the message 'no such file or directory'
– Xilas
Mar 12 '14 at 22:14
this obviously means i dont have acpi_video installed. I did however manage to fix the brightness permantly by finding a file: sudo gedit /sys/class/backlight/sony/brightness - then setting it to 7. which is the max brightness intreval, apparently. An error did occur but it still works.
– Xilas
Mar 12 '14 at 22:45
add a comment |
upon entering "echo 100 > /sys/class/backlight/acpi_video0/brightness" I received the message 'no such file or directory'
– Xilas
Mar 12 '14 at 22:14
this obviously means i dont have acpi_video installed. I did however manage to fix the brightness permantly by finding a file: sudo gedit /sys/class/backlight/sony/brightness - then setting it to 7. which is the max brightness intreval, apparently. An error did occur but it still works.
– Xilas
Mar 12 '14 at 22:45
upon entering "echo 100 > /sys/class/backlight/acpi_video0/brightness" I received the message 'no such file or directory'
– Xilas
Mar 12 '14 at 22:14
upon entering "echo 100 > /sys/class/backlight/acpi_video0/brightness" I received the message 'no such file or directory'
– Xilas
Mar 12 '14 at 22:14
this obviously means i dont have acpi_video installed. I did however manage to fix the brightness permantly by finding a file: sudo gedit /sys/class/backlight/sony/brightness - then setting it to 7. which is the max brightness intreval, apparently. An error did occur but it still works.
– Xilas
Mar 12 '14 at 22:45
this obviously means i dont have acpi_video installed. I did however manage to fix the brightness permantly by finding a file: sudo gedit /sys/class/backlight/sony/brightness - then setting it to 7. which is the max brightness intreval, apparently. An error did occur but it still works.
– Xilas
Mar 12 '14 at 22:45
add a comment |
I had the same problem in my Linux mint 17; I used the following step and it worked fine
Its not permanent fix but " if you can't do manually then try it through command line.
Check first
cd /sys/class/backlight/; ls
dell_backlight intel_backlight
then change to root permission
sudo su - root
Then enter the following command. Remember to change number as desired.
echo 250 > /sys/class/backlight/intel_backlight/brightness
Note - Don't change number below 100 at first time(might be completely dark). Try decreasing ur num slowly
edited Oct 15 '14 at 6:04
Kunal
1,59051726
answered Oct 15 '14 at 3:51
user379749user379749
1
add a comment |
I had the same problem in my Linux mint 17; I used the following step and it worked fine
Its not permanent fix but " if you can't do manually then try it through command line.
Check first
cd /sys/class/backlight/; ls
dell_backlight intel_backlight
then change to root permission
sudo su - root
Then enter the following command. Remember to change number as desired.
echo 250 > /sys/class/backlight/intel_backlight/brightness
Note - Don't change number below 100 at first time(might be completely dark). Try decreasing ur num slowly
edited Oct 15 '14 at 6:04
Kunal
1,59051726
answered Oct 15 '14 at 3:51
user379749user379749
1
add a comment |
I had the same problem in my Linux mint 17; I used the following step and it worked fine
Its not permanent fix but " if you can't do manually then try it through command line.
Check first
cd /sys/class/backlight/; ls
dell_backlight intel_backlight
then change to root permission
sudo su - root
Then enter the following command. Remember to change number as desired.
echo 250 > /sys/class/backlight/intel_backlight/brightness
Note - Don't change number below 100 at first time(might be completely dark). Try decreasing ur num slowly
edited Oct 15 '14 at 6:04
Kunal
1,59051726
answered Oct 15 '14 at 3:51
user379749user379749
1
I had the same problem in my Linux mint 17; I used the following step and it worked fine
Its not permanent fix but " if you can't do manually then try it through command line.
Check first
cd /sys/class/backlight/; ls
dell_backlight intel_backlight
then change to root permission
sudo su - root
Then enter the following command. Remember to change number as desired.
echo 250 > /sys/class/backlight/intel_backlight/brightness
Note - Don't change number below 100 at first time(might be completely dark). Try decreasing ur num slowly
edited Oct 15 '14 at 6:04
Kunal
1,59051726
answered Oct 15 '14 at 3:51
user379749user379749
1
edited Oct 15 '14 at 6:04
Kunal
1,59051726
edited Oct 15 '14 at 6:04
Kunal
1,59051726
edited Oct 15 '14 at 6:04
Kunal
1,59051726
1,59051726
answered Oct 15 '14 at 3:51
user379749user379749
1
answered Oct 15 '14 at 3:51
user379749user379749
1
answered Oct 15 '14 at 3:51
user379749user379749
1
1
add a comment |
add a comment |
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