How to change brightness on puppy linux?
I just installed puppy linux but the screen is literally burning my eyes. The Fn+Brightness key on my laptp doesn't work, I tried to go to setup and change the gamma but it just make the colors darker, the screen itself keeps being extremly bright so I think it's due to the backlight. How can I diminish the backlight or the thing that keeps the screen bright despite me lowering gamma ?
Edit : in fact when I'm in command prompt mode (GUI closed) the screen is still very bright. Is there a way to fix that too ?
Edit : I managed to add acpi_backlight=vendorin grub as you can find on the internet to fix this problem but this doesn't change anything. Pressing Fn+arrow still doesn't work and changing the brightness file in acpi_video doesn't work either.
brightness puppy-linux
asked Mar 16 '15 at 11:42
Wicelo
11113
add a comment |
I just installed puppy linux but the screen is literally burning my eyes. The Fn+Brightness key on my laptp doesn't work, I tried to go to setup and change the gamma but it just make the colors darker, the screen itself keeps being extremly bright so I think it's due to the backlight. How can I diminish the backlight or the thing that keeps the screen bright despite me lowering gamma ?
Edit : in fact when I'm in command prompt mode (GUI closed) the screen is still very bright. Is there a way to fix that too ?
Edit : I managed to add acpi_backlight=vendorin grub as you can find on the internet to fix this problem but this doesn't change anything. Pressing Fn+arrow still doesn't work and changing the brightness file in acpi_video doesn't work either.
brightness puppy-linux
asked Mar 16 '15 at 11:42
Wicelo
11113
add a comment |
I just installed puppy linux but the screen is literally burning my eyes. The Fn+Brightness key on my laptp doesn't work, I tried to go to setup and change the gamma but it just make the colors darker, the screen itself keeps being extremly bright so I think it's due to the backlight. How can I diminish the backlight or the thing that keeps the screen bright despite me lowering gamma ?
Edit : in fact when I'm in command prompt mode (GUI closed) the screen is still very bright. Is there a way to fix that too ?
Edit : I managed to add acpi_backlight=vendorin grub as you can find on the internet to fix this problem but this doesn't change anything. Pressing Fn+arrow still doesn't work and changing the brightness file in acpi_video doesn't work either.
brightness puppy-linux
asked Mar 16 '15 at 11:42
Wicelo
11113
I just installed puppy linux but the screen is literally burning my eyes. The Fn+Brightness key on my laptp doesn't work, I tried to go to setup and change the gamma but it just make the colors darker, the screen itself keeps being extremly bright so I think it's due to the backlight. How can I diminish the backlight or the thing that keeps the screen bright despite me lowering gamma ?
Edit : in fact when I'm in command prompt mode (GUI closed) the screen is still very bright. Is there a way to fix that too ?
Edit : I managed to add acpi_backlight=vendorin grub as you can find on the internet to fix this problem but this doesn't change anything. Pressing Fn+arrow still doesn't work and changing the brightness file in acpi_video doesn't work either.
brightness puppy-linux
brightness puppy-linux
asked Mar 16 '15 at 11:42
Wicelo
11113
asked Mar 16 '15 at 11:42
Wicelo
11113
edited Mar 16 '15 at 19:36
asked Mar 16 '15 at 11:42
Wicelo
11113
asked Mar 16 '15 at 11:42
Wicelo
11113
asked Mar 16 '15 at 11:42
Wicelo
11113
11113
add a comment |
add a comment |
4 Answers
4
active
oldest
votes
Try this. See if /sys/class/backlight/acpi_video0/ exists. If it does
cat /sys/class/backlight/acpi_video0/max_brightness
gives the max allowed brightness, and you can set brightness thus (where X is a value 0-'max_brightness'):
echo X >/sys/class/backlight/acpi_video0/brightness
answered Mar 16 '15 at 12:37
gogoud
1,700716
Unfortunately this doesn't work, I change brightness to 2 (max brightness = 7), restart the GUI but it doesn't change anything
– Wicelo
Mar 16 '15 at 12:56
did the value you set definitely take? you could try this as alternative:tee /sys/class/backlight/acpi_video0/brightness <<< 2. Have a look at more suggestions here.
– gogoud
Mar 16 '15 at 13:10
well when I restart GUIactual_brightnessis set to 2
– Wicelo
Mar 16 '15 at 13:29
in fact it's not only the GUI but also the screen while in command prompt mode too.
– Wicelo
Mar 16 '15 at 13:35
1
oh dear. I think a solution, if there is one, will be quite hardware-specific, prob good idea to add details of your hardware (i.e. exact laptop model) in the question.
– gogoud
Mar 16 '15 at 13:59
|
show 5 more comments
Have just tried echo X >/sys/class/backlight/acpi_video0/brightness on my HP 6450b with Puppy 5.7.1 and it does the job fine.
edited Aug 22 '15 at 23:21
don_crissti
49.7k15131160
answered Aug 22 '15 at 22:32
Leon
1
add a comment |
my speculation success, i use "echo 200 >/sys/class/backlight/intel_backlight/brightness" where my max brightness on intel_backlight is 976. ACER 4741 Intel Display
answered Mar 10 at 6:34
Hendrik
1
add a comment |
echo 300 >/sys/class/backlight/intel_backlight/brightness
works for IGPs (Integrated Graphic Processors), like Intel chips.
echo X >/sys/class/backlight/acpi_video0/brightness
probably for external graphics cards.
answered 25 mins ago
H B
1
New contributor
H B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
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4 Answers
4
active
oldest
votes
4 Answers
4
active
oldest
votes
active
oldest
votes
active
oldest
votes
Try this. See if /sys/class/backlight/acpi_video0/ exists. If it does
cat /sys/class/backlight/acpi_video0/max_brightness
gives the max allowed brightness, and you can set brightness thus (where X is a value 0-'max_brightness'):
echo X >/sys/class/backlight/acpi_video0/brightness
answered Mar 16 '15 at 12:37
gogoud
1,700716
Unfortunately this doesn't work, I change brightness to 2 (max brightness = 7), restart the GUI but it doesn't change anything
– Wicelo
Mar 16 '15 at 12:56
did the value you set definitely take? you could try this as alternative:tee /sys/class/backlight/acpi_video0/brightness <<< 2. Have a look at more suggestions here.
– gogoud
Mar 16 '15 at 13:10
well when I restart GUIactual_brightnessis set to 2
– Wicelo
Mar 16 '15 at 13:29
in fact it's not only the GUI but also the screen while in command prompt mode too.
– Wicelo
Mar 16 '15 at 13:35
1
oh dear. I think a solution, if there is one, will be quite hardware-specific, prob good idea to add details of your hardware (i.e. exact laptop model) in the question.
– gogoud
Mar 16 '15 at 13:59
|
show 5 more comments
Try this. See if /sys/class/backlight/acpi_video0/ exists. If it does
cat /sys/class/backlight/acpi_video0/max_brightness
gives the max allowed brightness, and you can set brightness thus (where X is a value 0-'max_brightness'):
echo X >/sys/class/backlight/acpi_video0/brightness
answered Mar 16 '15 at 12:37
gogoud
1,700716
Unfortunately this doesn't work, I change brightness to 2 (max brightness = 7), restart the GUI but it doesn't change anything
– Wicelo
Mar 16 '15 at 12:56
did the value you set definitely take? you could try this as alternative:tee /sys/class/backlight/acpi_video0/brightness <<< 2. Have a look at more suggestions here.
– gogoud
Mar 16 '15 at 13:10
well when I restart GUIactual_brightnessis set to 2
– Wicelo
Mar 16 '15 at 13:29
in fact it's not only the GUI but also the screen while in command prompt mode too.
– Wicelo
Mar 16 '15 at 13:35
1
oh dear. I think a solution, if there is one, will be quite hardware-specific, prob good idea to add details of your hardware (i.e. exact laptop model) in the question.
– gogoud
Mar 16 '15 at 13:59
|
show 5 more comments
Try this. See if /sys/class/backlight/acpi_video0/ exists. If it does
cat /sys/class/backlight/acpi_video0/max_brightness
gives the max allowed brightness, and you can set brightness thus (where X is a value 0-'max_brightness'):
echo X >/sys/class/backlight/acpi_video0/brightness
answered Mar 16 '15 at 12:37
gogoud
1,700716
Try this. See if /sys/class/backlight/acpi_video0/ exists. If it does
cat /sys/class/backlight/acpi_video0/max_brightness
gives the max allowed brightness, and you can set brightness thus (where X is a value 0-'max_brightness'):
echo X >/sys/class/backlight/acpi_video0/brightness
answered Mar 16 '15 at 12:37
gogoud
1,700716
answered Mar 16 '15 at 12:37
gogoud
1,700716
answered Mar 16 '15 at 12:37
gogoud
1,700716
answered Mar 16 '15 at 12:37
gogoud
1,700716
1,700716
Unfortunately this doesn't work, I change brightness to 2 (max brightness = 7), restart the GUI but it doesn't change anything
– Wicelo
Mar 16 '15 at 12:56
did the value you set definitely take? you could try this as alternative:tee /sys/class/backlight/acpi_video0/brightness <<< 2. Have a look at more suggestions here.
– gogoud
Mar 16 '15 at 13:10
well when I restart GUIactual_brightnessis set to 2
– Wicelo
Mar 16 '15 at 13:29
in fact it's not only the GUI but also the screen while in command prompt mode too.
– Wicelo
Mar 16 '15 at 13:35
1
oh dear. I think a solution, if there is one, will be quite hardware-specific, prob good idea to add details of your hardware (i.e. exact laptop model) in the question.
– gogoud
Mar 16 '15 at 13:59
|
show 5 more comments
Unfortunately this doesn't work, I change brightness to 2 (max brightness = 7), restart the GUI but it doesn't change anything
– Wicelo
Mar 16 '15 at 12:56
did the value you set definitely take? you could try this as alternative:tee /sys/class/backlight/acpi_video0/brightness <<< 2. Have a look at more suggestions here.
– gogoud
Mar 16 '15 at 13:10
well when I restart GUIactual_brightnessis set to 2
– Wicelo
Mar 16 '15 at 13:29
in fact it's not only the GUI but also the screen while in command prompt mode too.
– Wicelo
Mar 16 '15 at 13:35
1
oh dear. I think a solution, if there is one, will be quite hardware-specific, prob good idea to add details of your hardware (i.e. exact laptop model) in the question.
– gogoud
Mar 16 '15 at 13:59
Unfortunately this doesn't work, I change brightness to 2 (max brightness = 7), restart the GUI but it doesn't change anything
– Wicelo
Mar 16 '15 at 12:56
Unfortunately this doesn't work, I change brightness to 2 (max brightness = 7), restart the GUI but it doesn't change anything
– Wicelo
Mar 16 '15 at 12:56
did the value you set definitely take? you could try this as alternative:
tee /sys/class/backlight/acpi_video0/brightness <<< 2. Have a look at more suggestions here.– gogoud
Mar 16 '15 at 13:10
did the value you set definitely take? you could try this as alternative:
tee /sys/class/backlight/acpi_video0/brightness <<< 2. Have a look at more suggestions here.– gogoud
Mar 16 '15 at 13:10
well when I restart GUI
actual_brightness is set to 2– Wicelo
Mar 16 '15 at 13:29
well when I restart GUI
actual_brightness is set to 2– Wicelo
Mar 16 '15 at 13:29
in fact it's not only the GUI but also the screen while in command prompt mode too.
– Wicelo
Mar 16 '15 at 13:35
in fact it's not only the GUI but also the screen while in command prompt mode too.
– Wicelo
Mar 16 '15 at 13:35
1
1
oh dear. I think a solution, if there is one, will be quite hardware-specific, prob good idea to add details of your hardware (i.e. exact laptop model) in the question.
– gogoud
Mar 16 '15 at 13:59
oh dear. I think a solution, if there is one, will be quite hardware-specific, prob good idea to add details of your hardware (i.e. exact laptop model) in the question.
– gogoud
Mar 16 '15 at 13:59
|
show 5 more comments
Have just tried echo X >/sys/class/backlight/acpi_video0/brightness on my HP 6450b with Puppy 5.7.1 and it does the job fine.
edited Aug 22 '15 at 23:21
don_crissti
49.7k15131160
answered Aug 22 '15 at 22:32
Leon
1
add a comment |
Have just tried echo X >/sys/class/backlight/acpi_video0/brightness on my HP 6450b with Puppy 5.7.1 and it does the job fine.
edited Aug 22 '15 at 23:21
don_crissti
49.7k15131160
answered Aug 22 '15 at 22:32
Leon
1
add a comment |
Have just tried echo X >/sys/class/backlight/acpi_video0/brightness on my HP 6450b with Puppy 5.7.1 and it does the job fine.
edited Aug 22 '15 at 23:21
don_crissti
49.7k15131160
answered Aug 22 '15 at 22:32
Leon
1
Have just tried echo X >/sys/class/backlight/acpi_video0/brightness on my HP 6450b with Puppy 5.7.1 and it does the job fine.
edited Aug 22 '15 at 23:21
don_crissti
49.7k15131160
answered Aug 22 '15 at 22:32
Leon
1
edited Aug 22 '15 at 23:21
don_crissti
49.7k15131160
edited Aug 22 '15 at 23:21
don_crissti
49.7k15131160
edited Aug 22 '15 at 23:21
don_crissti
49.7k15131160
49.7k15131160
answered Aug 22 '15 at 22:32
Leon
1
answered Aug 22 '15 at 22:32
Leon
1
answered Aug 22 '15 at 22:32
Leon
1
1
add a comment |
add a comment |
my speculation success, i use "echo 200 >/sys/class/backlight/intel_backlight/brightness" where my max brightness on intel_backlight is 976. ACER 4741 Intel Display
answered Mar 10 at 6:34
Hendrik
1
add a comment |
my speculation success, i use "echo 200 >/sys/class/backlight/intel_backlight/brightness" where my max brightness on intel_backlight is 976. ACER 4741 Intel Display
answered Mar 10 at 6:34
Hendrik
1
add a comment |
my speculation success, i use "echo 200 >/sys/class/backlight/intel_backlight/brightness" where my max brightness on intel_backlight is 976. ACER 4741 Intel Display
answered Mar 10 at 6:34
Hendrik
1
my speculation success, i use "echo 200 >/sys/class/backlight/intel_backlight/brightness" where my max brightness on intel_backlight is 976. ACER 4741 Intel Display
answered Mar 10 at 6:34
Hendrik
1
answered Mar 10 at 6:34
Hendrik
1
answered Mar 10 at 6:34
Hendrik
1
answered Mar 10 at 6:34
Hendrik
1
1
add a comment |
add a comment |
echo 300 >/sys/class/backlight/intel_backlight/brightness
works for IGPs (Integrated Graphic Processors), like Intel chips.
echo X >/sys/class/backlight/acpi_video0/brightness
probably for external graphics cards.
answered 25 mins ago
H B
1
New contributor
H B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
echo 300 >/sys/class/backlight/intel_backlight/brightness
works for IGPs (Integrated Graphic Processors), like Intel chips.
echo X >/sys/class/backlight/acpi_video0/brightness
probably for external graphics cards.
answered 25 mins ago
H B
1
New contributor
H B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
echo 300 >/sys/class/backlight/intel_backlight/brightness
works for IGPs (Integrated Graphic Processors), like Intel chips.
echo X >/sys/class/backlight/acpi_video0/brightness
probably for external graphics cards.
answered 25 mins ago
H B
1
New contributor
H B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
echo 300 >/sys/class/backlight/intel_backlight/brightness
works for IGPs (Integrated Graphic Processors), like Intel chips.
echo X >/sys/class/backlight/acpi_video0/brightness
probably for external graphics cards.
answered 25 mins ago
H B
1
New contributor
H B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 25 mins ago
H B
1
New contributor
H B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 25 mins ago
H B
1
answered 25 mins ago
H B
1
1
New contributor
H B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
H B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
H B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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