Is there a way to lower the brightness beyond the default minimal setting? I've noticed that even on the lowest setting, I can still use the thing like a flashlight.
Sent from my Nexus One using XDA App
Too bright? Haven't heard that one. Mainly complaints about not bright enough in the sunlight and such.
I'm no programmer or anything, but as far as I know the android system has a brightness value of 0-100%, and the user (or apps) can change the value to anywhere in between. There might be a hack to undervolt the screen, but as far as I know one doesn't exist.
I'm guessing he has an AMOLED... in which case, I understand. The screen is bloody bright, even on the lowest setting.
My only idea would be to install one of the CM roms that lets you use the surface flinger mod to change your display to a monochrome red.
download 'screen filter' or 'total screen control' from the market. they allow you to apply a dark layer dim your phones screen to however much you want. hope this helps
Only time I really notice mine is too bright is reading if I use white on black, so I use a grey on black.. Fixed.
Although yeah, if i poke into the market first thing in the morning or such, it's pretty bright.
Problem with the screen overlays with surface flinger and such is you have to manually enable/disable them. It would be nice if the screen would go lower in some cases.
Related
I'm not sure if this has been brought up before, but I wouldn't be surprised if it was missed. I am the type of user who likes to use the phone at full brightness, as it does not seem to have a huge negative impact on my battery life in day to day operations.
I was looking carefully at the browser on the Galaxy and wondered why the whites looked so dimmed in comparison to other parts of the operating system.
I had already done the following:
1. Turned the OS brightness all the way up.
2. Turned browser brightness all the way up.
3. Disabled the screen power saving mode.
I then downloaded a flashlight application and maxed it to 100% while switching to the browser with the Home key multitask, and going back and forward between the flashlight app and the browser app, it is very clear that the browser is not pushing max brightness. Even though the brightness settings on both the OS and the browser are maxed, it seems as though the browser is capped to 80% brightness or so.
My friend also verified this during his test run, as he has just bought the Samsung Vibrant and noticed the same thing. I understand many will just leave the auto-brightness setting on, but that's not really addressing the issue here.
Is there a way for an XDA developer to correct this issue through a patch or ROM?
thanks
I checked with the shell and when brightness is at 100% it has an absolute value of 255, the same when I'm at the browser set with full brightness, so it seems it's working as it should.
You can check it with this command
Code:
cat /sys/devices/platform/s3cfb/spi_gpio.3/spi3.0/blacklight/s5p_bl/actual_brightness
darksnarfer said:
I checked with the shell and when brightness is at 100% it has an absolute value of 255, the same when I'm at the browser set with full brightness, so it seems it's working as it should.
You can check it with this command
Code:
cat /sys/devices/platform/s3cfb/spi_gpio.3/spi3.0/blacklight/s5p_bl/actual_brightness
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Click to collapse
I don't know, I experience the same thing as the OP. Everything's bright, except when surfing the web.
Same issue here. I use Opera in bright daylight.
Sent from my GT-I9000 using XDA App
If you go in to the brightness settings there is an option at the very bottom called "Power saving mode". I'm not sure if that is having any effect on the browser.
Thanks for the numbers, but I gotta say, just comparing the flashlight app and hitting the back arrow to toggle to the browser, it is beyond obvious that the browser is not as bright as the flashlight application. I used google with it's white background and zoomed in to an area that was just white to avoid other distractions.
This is the best way to test since there will be no transition in between the application toggle and you see the screen dim easily.
As indicated by my original post, I have also turned off the power saving feature so that is not a concern. Someone did say that the Behold 2 has the same cap for their browser and that this is a samsung specific setting that's probably there to save battery. I haven't been able to confirm it on that phone yet but just give the flashlight test a chance and you'll see.
oh one last thing i noticed is, when going from the browser back to the flashlight, sometimes the flashlight app is also dimmed at the same level brightness as the browser, but tapping the screen 'wakes' up the app into full brightness.
TGalaxy browser brightness
To me it's very obvious that the browser is dimmed down, I'd say more than to 80%... Having google as the default homepage couldn't make it more obvious when opening the browser! Samsung obviously thought that no one with a decent eyesight will buy their phone. Or anyone who feels capable of managing their phone's battery life themselves.
It's just one of those niggling things that had to be included, lessening the experience of an otherwise rather breathtaking phone. Another one is the compulsory vibration when charging is finished - makes me wonder when others, or the developers for that matter, charge their smartphones! I charge them overnight, and of course every night... or at least used to, as with the Galaxy S, I can no longer sleep.
I think I've been through every menu possible to change these couple of features, with no success... if anyone knows anything, please share.
It happens on the dim-side, too
I have the same problem, but on the dim side. The browser brightens the screen when it comes on if you have the brightness set to zero. I like it dimmed all the way at night if I'm reading in bed when the lights are out and my partner is asleep, but it keeps turning it up so it's pretty bright in the pitch dark. Arrgh. It's my phone, can't I set it the way I want? Grr.
I've read that there are limitations on how much the screen dims and brightens unless you have a rooted phone and you use an app that's not built into the OS.
I rooted mine and there are some configuration apps that will set it to 0, but I think the built-in operating system slider doesn't go all the way to zero and might not go all the way to 255 when you slide it to the very edges. Supposedly it only goes to 10 on the low side from the notes on some apps.
So, probably it's a similar limitation on the slider for the screen brightness in the browser. We're probably stuck with this problem until someone writes an app that lets you change this setting to any value between 0 and 255 since the default sliders don't allow the low side and I'm guessing not the high side either.
So . . . any android developers out there, it would be cool if you could make an app to change this setting if it's available programatically somewhere.
I tried the "Dimmer" and "Brightness!" apps from the market. But none of them 'Keep' the brightness at the minimum always.
Hi all,
Got the Galaxy S for a month, pretty happy with it. Yesterday, the brightness suddenly gone up. The worst part is the display lost the gradient scaling and it is replaced by colour bands!
Apps like the stock video player for example. Before the video is played, you can see the grey control bar at the bottom covers by a lot of colour bands. The colour of the movie is all washed out as if you were playing it in 8 bit colour mode. Where the same avi played okay before, crystal clear and colour was rich.
Same thing with the charging screen while the phone is off. You can see the colour bands on the grey area of the shadow of the green battery. Just wondering if anyone has the same problem?
Cheers!
Factory reset :d
Tried all that full factory wipe, data reset, flash to different rom. Nothing works
Then your device's probably faulty. replace it.
Pretty certain it is. I took a screenshot of the video player and it looks fine but on the screen, you can still see those colour bands meters away.
I guess this indicates the LCD is faulty.
romhunter said:
I guess this indicates the LCD is faulty.
Click to expand...
Click to collapse
The galaxy s has no LCD its LED
Ive noticed when you slide down that tray from the top, when closing it mine has MANY TIMES switched to full brightness. But simply tapping the brightness button on the multi widget thingy makes it go back to how I want.
evil-doer said:
The galaxy s has no LCD its LED
Ive noticed when you slide down that tray from the top, when closing it mine has MANY TIMES switched to full brightness. But simply tapping the brightness button on the multi widget thingy makes it go back to how I want.
Click to expand...
Click to collapse
Thats because you can adjust the brightness by sliding your finger accross the notification bar.... doesnt work if you have auto brightness ticked...
talboy said:
Thats because you can adjust the brightness by sliding your finger accross the notification bar.... doesnt work if you have auto brightness ticked...
Click to expand...
Click to collapse
I have auto brightness ticked, sliding still works for me
Standard rom btw...
Sent from my GT-I9000 using XDA App
Hi I have the exact same problem! But I didn't notice it before now wen I saw this thread. But all the colours are just fine when I play a vid, it's just the grey controlbar that is by many stripes of different colours, looks like 8bit colour. But when the vid starts playing its just fine, because it gets transparent. Should I get this phone changed, have just had it a couple of weeks.
Sent from my GT-I9000 using XDA App
Hi Radat,
I posted more info in the other forum including some screenshots. http://forums.whirlpool.net.au/forum-replies.cfm?t=1520586
Hope yours okay. I am going to call Samsung tomorrow.
romhunter,
yup, saw the screenshots, looks like quantization problem i.e. that colours are using fewer bits than normal. For example, RGB screen might use 24 bits per pixel, 8 bits per r/g/b colour, the screenshots seem to suggest only 5 or 6 bits per colour.
Hopefully this is just a software glitch, though you said you already tried factory reset / wipe, could it be a loose cable wire somewhere or maybe a problem with the screen to mainboard connector?
talboy said:
Thats because you can adjust the brightness by sliding your finger accross the notification bar.... doesnt work if you have auto brightness ticked...
Click to expand...
Click to collapse
awesome. theres so many little shortcuts like this ive yet to learn. thanks
On my sgs, there is a green colour attached to to the grey colours, I can see it really good when using Screen test app on the gray scale screen, all grey is sort of green!
romhunter said:
Hi all,
Got the Galaxy S for a month, pretty happy with it. Yesterday, the brightness suddenly gone up. The worst part is the display lost the gradient scaling and it is replaced by colour bands!
Cheers!
Click to expand...
Click to collapse
Just got a brand new device. Used it for about an hour, then the exact same thing happened - out of the blue.
Any possible home-front solutions? Having to take it to be serviced is a PITA for me ATM.
Mine definitely seems to have banding in the video player control pane before the video playback starts. Can someone please post a screenshot of how it should be? I haven't seen the banding issue anywhere else except the battery charging indicator when charging the phone when it's turned off. And as far as I remember they were always like that.
So can someone please post a screenshot of how it should be for me to compare.
I have the same problem appeared after upgrading to Froyo. Brightness increased (even it is high in the lowest setting) and color saturation also increased. As a result, i see bandings or lines where a color gradient exist. I added an example photo from "Samsung Apps" page. You can easily see bandings on the bottom. I see such things in a PC screen if color adjustment is not optimum. So there must be a way to adjust screen saturation and brightness by a software through registry i think. It seems like a software problem. I think it is a very rare problem, i found few people on the web complaining about it. Mostly HTC Desire, which use also Samsung Amoled screen, users complaining about it.
I did everything said on forums to solve it but no way. I flashed many different roms both eclair and froyo, use a software given in HTC forums to change RGB color, changed color settings through video player etc. Nothing worked. Please help
victor79 said:
I have the same problem appeared after upgrading to Froyo. Brightness increased (even it is high in the lowest setting) and color saturation also increased. As a result, i see bandings or lines where a color gradient exist. I added an example photo from "Samsung Apps" page. You can easily see bandings on the bottom. I see such things in a PC screen if color adjustment is not optimum. So there must be a way to adjust screen saturation and brightness by a software through registry i think. It seems like a software problem. I think it is a very rare problem, i found few people on the web complaining about it. Mostly HTC Desire, which use also Samsung Amoled screen, users complaining about it.
I did everything said on forums to solve it but no way. I flashed many different roms both eclair and froyo, use a software given in HTC forums to change RGB color, changed color settings through video player etc. Nothing worked. Please help
Click to expand...
Click to collapse
I looked at ur pic. I honestly dont see any problem with it. What is this banding ur talking about?
Sent from my GT-I9000 using XDA App
Bottom of the screen, around "2010 Samsungs Electronics". This part should be a smooth color transition from blue to transparent but there are circular lines between colors. Is your screen the same.
Another example. The one on the phone looks white on the upper part where a color transition from dark to light black exist and there are visible lines. But normally it was looking like the other picture (taken from notebook screen) before this problem
ah on that screen i already see 8 shades of blue, most be around 4k colors .. bummer though, it's normally a software problem, doubt that a conector has come loose. (but possible if it's a pimped up composite plug with Y/Pr/Pb, .. eh still impossible cos it's getting decoded before that)
050820121030:
I have use the search button to see how i can lower screen brightness on galaxy note.
i found everywhere mentioning screen filter, it is not i don't like screen filter, but when i take screenshot it will be tinted gray.
so i decide to go to a more elegant way like what atrix 4g user did.
http://forum.xda-developers.com/showthread.php?t=1245332
i tried with my note, i cant find sys/bus/i2c/drivers/lm3532, i decided to check folder with the nearest name, but i can't find it.
so i decided to download linux, mind you i have no idea how to use linux.
i downloaded samsung ics opensource update 4, inside i can't find leds-lm3532.c,leds-lm3532.h,board-mot-lights.c.
so futhur dig found leds-lm3530c, the file structure is different with leds-lm3532.c, but i think it works the same.
any good suggestion from experts?
edit1 050820121203:
I decided to check what AdjBrightness do.
it is modifying the following files
/sys/class/leds/lcd-backlight/brightness
/sys/class/leds/amber/blink
/sys/class/leds/amber/brightness
/sys/class/leds/green/blink
/sys/class/leds/green/brightness
all return errors in note.
further investigation leads to Rootdim:
/sys/class/leds/leds-sec/trigger
/sys/class/leds/leds-sec/brightness
/sys/class/leds/leds-sec/mmc1::/trigger
/sys/class/leds/leds-sec/mmc1::/brightness
/sys/class/leds/leds-sec/mmc2::/trigger
/sys/class/leds/leds-sec/mmc2::/brightness
here all the triggers return error.
next thing i check /sys/class/
i see backlight/panel in it.
i also see lcd, leds and lightsensor.
have no idea, keep digging.
100820120935:
Found s6*aa*.c files inside driver folder.
There will be some info about 5.3inch screen.
Deeper search found that it only suplort 24 stages of brightness
From 0,1 to 30 is 0
Conclusion minimum brightness for galaxy note is 1(more than 30)
Keep digging.
100820121808:
s3cfb_s6e39a0.c contain brightness level from 1 to 24.
100820121815:
AMS529HA01 is samsung 5.3 inch galaxy note panel
s3cfb_s6e8aa0 -- the one we are using.
the following files also related to the above file.
s3cfb_s6e39a0
s3cfb_s6e63m0
s6d6aa1
s6dr171
s6e8aa1
smart_dimming
midas-lcd
setup-fb-s5p
the whole thing means samsung have tried other lcd before hd super amoled 5.3 inch?
keep digging for the brightness
150820121820:
End of research, the brightness for amoled devices only have 24 levels.
lower than that you will need to adjust contrast for better battery consumption.
if you use filter it wont decrease battery consumption, and it will affect your screenshot images clarity.
1609120512:
https://sites.google.com/site/androidnothize/no-dock/input-device-and-backlight
this shows you minimum brightness level is 30
http://forum.xda-developers.com/showthread.php?t=1709686
search for min_bl
http://forum.xda-developers.com/showthread.php?t=1154278&page=617
curve?
http://forum.xda-developers.com/showthread.php?t=1576355&page=222
N.E.A.K
So, what's the verdict? Are we stuck with "too bright in the dark" screens on our Note's?
d210 said:
So, what's the verdict? Are we stuck with "too bright in the dark" screens on our Note's?
Click to expand...
Click to collapse
For that purpose a screen filter works just fine for me.
Frankly it's not doing it for me, it looks like I'm looking through a grey plastic bag.
Andrew0811 said:
150820121820:
End of research, the brightness for amoled devices only have 24 levels.
lower than that you will need to adjust contrast for better battery consumption.
if you use filter it wont decrease battery consumption, and it will affect your screenshot images clarity.
Click to expand...
Click to collapse
So what is conclusion bro?
We can't use brightness below the SYSTEM-MINIMUM?
I also want more battery by reducing brightness to below 10.
AND yes you did well.
Good research.
I'm amazed there should be a sticky on this!! If you have a rooted z2, then rootdim on playstore let's you lower brightness far below stock. And it's hardware, not an on top layer which just destroys contrast. It makes your z2 dim just like an Amoled screen! Best of all it saves batteries unlike software dimmers!
I use it together with another app called night filter which is actually a software screen filter, I apply a slight reddish tint to save my eyes further.
(side note: The developer has made a remake of rootdim called ScreenDim but it currently doesn't work for me as well as rootdim )
HTH!
Thank you for sharing, I was looking for a way how to make the screen as dim as possible, finally bumped into this thread Though I would probably prefer using Xposed module or force system brightness to go as low as rootdim, nevertheless very nice app
thanks for the info, It worked excellent
this one here huh ?
https://play.google.com/store/apps/details?id=mobi.pruss.superdim
Gotta try it out. Sometimes i do think the screen is way to bright.
Edit:
Don't really like it.
when you press 25% you can press it 3 times and the screen flickers and changes brightness 3 times.
also depending on which App you open screen may change brightness for no reason.
Do you guys get it to work on 5.0.2? Mine don't dim anymore. Root access is granted.
solwretep said:
I'm amazed there should be a sticky on this!! If you have a rooted z2, then rootdim on playstore let's you lower brightness far below stock. And it's hardware, not an on top layer which just destroys contrast. It makes your z2 dim just like an Amoled screen! Best of all it saves batteries unlike software dimmers!
I use it together with another app called night filter which is actually a software screen filter, I apply a slight reddish tint to save my eyes further.
(side note: The developer has made a remake of rootdim called ScreenDim but it currently doesn't work for me as well as rootdim )
HTH!
Click to expand...
Click to collapse
Thanks
Bro
When using dc dimming on my amoled phone the brightness is way to high at night at lowest slider value.
While with pwm its a lot better i still would prefer it less bright (anyway no solution because flicker is annoying at lowest brightness).
Im pretty sure i am not at the lowest possible brightness level.
Unluckily beside some third party apps which running in the background and overlay a black layer i couldnt find anything useful even tough tons of people looking for a solution.
Your battery would thank you aswell .
Please can anyone make a module which sets the lowest brigthness to 1 on boot up ?
Thanks.
Danny94 said:
When using dc dimming on my amoled phone the brightness is way to high at night at lowest slider value.
While with pwm its a lot better i still would prefer it less bright (anyway no solution because flicker is annoying at lowest brightness).
Im pretty sure i am not at the lowest possible brightness level.
Unluckily beside some third party apps which running in the background and overlay a black layer i couldnt find anything useful even tough tons of people looking for a solution.
Your battery would thank you aswell .
Please can anyone make a module which sets the lowest brigthness to 1 on boot up ?
Thanks.
Click to expand...
Click to collapse
Don't think there is currently a module available. Having the same problem with my second mobile. The only App that I found and which is working as expected is for me:
Darker (Screen Filter) - Apps on Google Play
Darker can lower your screen brightness to extremely low levels.
play.google.com
Maybe anyone other knows a better solution.
larswars said:
Don't think there is currently a module available. Having the same problem with my second mobile. The only App that I found and which is working as expected is for me:
Darker (Screen Filter) - Apps on Google Play
Darker can lower your screen brightness to extremely low levels.
play.google.com
Maybe anyone other knows a better solution.
Click to expand...
Click to collapse
Yeah this one uses a overlay, no good solution unluckily.
Hopefully some dev pick up my request.