Ideapad S400 Brightness Problem

I'm having a problem with a Lenovo Ideapad S400 Laptop on Linux. The brightness in any linux distribution is very low in comparison with windows 8 brightness.
Some people also had the same problem when downgrading from windows 8 to windows 7. See:
https://forums.lenovo.com/t5/IdeaPad-S-series-Netbooks/s405-s400-screen-brightness-issue-after-downg...
According to lenovo support, the problem is that brightness settings have 101 steps on windows 8 and only 16 steps on windows 7. See this picture to compare:
http://support.lenovo.com/en_MY/research/hints-or-tips/detail.page?DocID=HT076504
Is there a specific solution to this problem on linux? For example, a procedure to force the brightness, a kernel module, a solution to a similar problem in another laptop, etc.
Solved!
Go to Solution.

Hi, this problem was corrected on kernel 3.8.3 by the kernel developers! I'm happy to say that many lenovo laptops now work in linux. Unfortunatly, not in windows 7 yet.
Instructions on ubuntu:
-go to http://kernel.ubuntu.com/~kernel-ppa/mainline/
-folder kernel 3.8.3
-in our case, download linux headers...amd64, linux-headers...all-amd64, linux-img...amd64, linux-image-extra....amd64
-open the terminal
-sudo dpkg -i *.deb
-reboot and enjoy
PS: Intel has release a new driver for INTEL HD Graphics that works smoothly with ubuntu and it is easy to install.
instructions on ubuntu:
-go to https://01.org/linuxgraphics/
-the rest is easy to follow
i hope this will work also on other laptops and linux distributions

Similar Messages

Lenovo ideapad s400 startup problem

i have lenovo ideapad s400 with windows7 was working good, but now its hanging Starting Windows please help

hi kuraysi,
Welcome to the Lenovo Forums.
Just to check, if you boot in Safe Mode, are you able to load Windows? If booting to Safe Mode works, perform a clean boot and observe. This will isolate any possible 3rd party software that might be inteferring with the Windows startup.
If that doesn't work and Windows is hanging up on the loading screen then we're probably looking at a corrupted Windows file or a bad hardware. In this case, you may need to:
1. Reload the system via the OneKey Recovery (note that all ways on the OS partition will be wiped)
2. If reloading Windows doesn't work or the machine freezes up then you're prolly looking at a bad hardware (possibly the HDD).
Let me know how it goes.
Regards
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Ideapad S400 Battery Problem

Hi all ,
4 days back i bought a Lenovo S400 Ideapad with i3 processor(2nd gen), I am really concern about the battery back up its giving , currently its giving 1.5 - 2 hrs . any solution guys .
In Flipkart they have quoted 5 hrs as battery back up , so its a bit of concern that so early it should not give this poor backup .
hoping for a reply .
Solved!
Go to Solution.

hi Ranjan07,
Welcome to Lenovo Community Forums!
On Lenovo sites it also says 5hrs battery life, but this is an idle mode which means no application running and minimal brightness.
Windows is calculating your remaining battery hours of usage by checking your current discharge rate vs. The remaining charge.
You can use Passmark Batterymon to check the discharge rate, high discharge rate is caused applications / Background applications / services and power settings like brightness and wireless/Bluetooth.
On my lab PC here, discharge rate is around 15884mW so If we have the same discharge rate and battery charge of full 32000mW It will only last for about 2hrs.
My system is running on Windows 8 and I tried looking around seemed that there are steps to lower down the discharge rate by adjusting some settings like this on this Post
http://www.friedbeef.com/top-15-ways-to-extend-your-laptop-battery-life/
You can also fully charge your battery and see if the full charge will count as 32000mW, If it is nowhere cose to that then that definitely is a defective battery.
But still if the computer is already on minimal usage lower power settings, still your getting 1.5 to 2 hours,
You can always contact Lenovo Technical support for assistance.
Best Regards
Solid Cruver
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Ideapad Z500 Touch Win 10 Brightness Problem

Hello,
the Z500 Touch has/had the problem with the regulation of the brightness with Win 8.1, but reinstalling the intel video driver solved this problem.
Now - with Win 10 - I have got the same problem, but reinstalling the (intel) drivers doesn't help. I just can't regulate the brightness: The brightness sticks at the lowest level.
Does anybody know how I can solve this problem?
Peter

I'll try that. [Edit: Doesn't work for my Z500 touch. I copied those files but it didn't help. In addition, I'm not ableto reinstall the Win 8.1 Intel Video driver, because Windows 10 tells me the Realtek bluetooth or something like that program doesn't run with Win 10 :/] I've got another solution: Just set the driver of the on-board graphics to the previous version and the brightness problem is solved, but because of me having a graphics 4000 the performance with this "trivial" driver is just bad so that it's just a workaround.

Ideapad S400 Touch - HDMI to VGA problem

Hi,
I need to connect Ideapad S400 Touch to projector which has only VGA input. Therefore, I've bought such converter:
http://www.amazon.com/Black-Input-Adapter-Converter-Laptop/dp/B007KFVQXI/ref=pd_sim_e_4
Unfortunately, whatever I connect through it (projector, tv, PC monitor) I always have no signal...
I tried HDMI direct connection toTV - works
I tried HDMI to DVI converter and connect to PC monitor - works
but when I use HDMI to VGA like one mentioned above - always "no signal"
Please help. I bought this laptop and now find it useless as I present on beamers very often and am completly stacked now...
Any suggestion would be highly appreciated!
Thanks!

hi ro174748,
Welcome to Lenovo Community Forums!
The connection you need is a active coverter.
Passive connection just passes the signal and relay the signal without converting it.
Active connection converts the signal and relay it to the other end.
HDMI send / recieve digital Signal while VGA send / recieve analog
Your corrent covertion will not work if the device cannot recieve digital signals through VGA.
You will need an active converter such as this
http://www.newegg.com/Product/Product.aspx?Item=N82E16812400359
HDMI to DVI operates with Digital signal so no covertion needed, that's why it worked.
Here is a simple discussion about this issue.
Hope this helps
Cheers!
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Z500 brightness problems Windows 8.1

Hello,I open this post to report a brightness problem on Lenovo Z500 Ideapad. Yesterday I've upgraded to OS Windows 8.1 and when I adjusted the screen brightness it goes off, and brightness adjust function doesn't works. I've solved my problem reinstalling the Intel video drivers, downloaded from Lenovo Driver Support.It seems that Windows 8.1 upgrade disables video drivers.I hope this fix can help someone else with same problem. Look for a solution on internet with brightness off kills your eyes.

This solution is everything but sustainable! I've bought the Lenovo z500 precisely to work on the video editor CyberLink PowerDirector 11. But this softwares requires the latest driver update of my video driver... otherwise it will not work properly (see "green screen issue": http://forum.cyberlink.com/forum/posts/list/16190.page). Yesterday, I've upgraded my laptop with the latest video card driver and the PowerDirector finally worked perfectly. But then came the Z500 brighness issue, where I am required to downgrade my video card to fix it!!! Which means I won't be able to use PowerDirector although this is the reason why I purchased it! So what do I do? (((( Isn't there another way to firx the brightness issue? Thanks for any advice Robert

Ideapad s400 touch bios or other hidden power management while on battery? or battery just weak?

Hi,
I have problems with performance when unplugging my ideapad s400 touch, and it does not seem to be related to windows or intel graphics power settings.
Example, while plugged in with full battery (not charging), I can play Skyrim at 600x800 with 28-30 fps (all shadows turned off and with reduced textures, in case you are wondering how that is possible)
But when I unplug, or the computer is charging, the game will be only barely playable at 480x640 with 18-26 fps (besides res. of course same settings).
In both cases, the intel graphics options and in the Lenovo Energy Management is set to the high/max performance settings.
So I am wondering if there are some hidden Bios power management or some other hidden power management going on, when it is unplugged or charging?
Or if simply the battery can not deliver the same juice as when it is plugged in?
Thanks for any help,
L

hi x8lars,
Welcome to Lenovo Community Forums!
Can you try changing the power plan on your system to a High Performance Settings,
Also check the Advanced power settings and make sure that the Maximum Processor start and minimum are set the same with the Plugged in.
Let me know your settings,
Cheers!
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Ideapad s400 no me anda la camara web

Hola tengo un problema con mi ideapad s400 la reinstale windows y le puse windows 7 de 64 bits!, el tema es que no me anda la camara wab! en el administrador de dispositivos me figura como instalada y habilitada! pero cuando quiero utilizarla con skype o con las videos llamadas de facebook, ambos programas me dicen que no me reconocen la camara o no la detectan! probe de cambiarle los drivers y nada! la verdad que no se que hacer! descargue los drivers de la camara de esta pagina las dos opciones que te me daba y nada! Ademas de esto en el administrador de dispositivos me sale un "dispositivo Desconocido" que no lo reconoce winddows y no se de donde descargarle el driver . en el id del dispositivo dice "root\lenovoVhid" espero que me puedan ayudar con eso! muchas gracias.

Hola Lyords que tal,
Tu s400 tenia Windows 7 como sistema operativo pre-instalado?
Desde administrador de dispositivos / dispitivos e imagenes quita el controlador, en teoria dices que este esta instalado y funciona, luego instala este controlador http://support.lenovo.com/es/es/products/laptops-and-netbooks/ideapad-s-series-netbooks/ideapad-s400-notebook/downloads/DS030370 , reinicia figurara en administrador de dispositivos?, de ser el caso realiza un test de la cámara web http://www.testwebcam.com/
El controlador desconocido, tienes instalado el energy management, si no lo tienes instalarlo http://support.lenovo.com/es/es/products/laptops-and-netbooks/ideapad-s-series-netbooks/ideapad-s400-notebook/downloads/DS029488
Un saludo.

Ideapad S400 touchpad jumpy when ethernet cable plugged in

I have an Ideapad S400. Lately when i plug in my ethernet cable(router, switch, different cable, tried everything) the touchpad behaves erratic, but only if i run on battery.
Have updated drivers, reinstalled windows even tried ubuntu... same results.
I'm concerned it may be a hardware issue.
Anyone had similar problems?
FIx?
Thank you in advance
Solved!
Go to Solution.

hi piranja21,
Welcome to Lenovo Forums
You might want to try the Troubleshooting steps on this thread, your concern is somehow similar to this one,
Hope this helps,
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Brillo Ideapad s400

Buenos dias,
instalé windows 7 en mi lenovo ideapad s400 y al instalar los drivers de la tarjeta grafica (Intel HD Graphics 4000), el brillo de la pantalla se redujo aunque sigue apareciendo como que está al maximo. ¿Existe alguna forma de solucionar este problema y recuperar el brillo perdido?
Un saludo, y gracias de antemano.

Automáticamente Windows instala uno cual fue la versión que instalo para compararlo con la versión de la web de soporte y ver si el problema se soluciona en tema software.
Con la versión que instalo Windows puede intentar ir al link que le pase antes y que le instale una actualización.
Hay que descartar tema software, puede ir a las configuraciones de la BIOS cuando este hay intente subir el brillo con los atajos de teclado, este método fue una de las primeras soluciones en tema brillo hasta que se detecto que el problema pasaba por tema controlador de la Intel.
Un saludo
@Antony_Vamu
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Mis Lenovo: Y560p,Z580,Z500 touch,S920,T400,G50-70 ,Soy voluntario no trabajo para Lenovo, las opiniones expresadas por mi no representan a Lenovo, no se responde a preguntas de manera privada debes crear un nuevo tema, números del centro de llamada Lenovo Aquí , reglas de participación del foro Aquí , si encontraste solución a tu problema marcarlo aceptándolo como solucionado!!!!!

S400 Webcam problem on Windows 8.1

Hi everyone!
Since I've installed Windows 8.1 on my Lenovo IdeaPad S400, my integrated camera doesn't work anymore. I have been searching on the internet the other time, but can't find a resolution. Some things I tried:
- Update all the laptops drivers by using 'Advanced Driver Updater';
- Hit fn+esc and fn+f9, but nothing happens (Some people on the internet say there has to be an webcam icon on that button, but I don't have that either);
- Open applications that use the camera, like Skype, YouCam and Camera (the Windows-version), but they all say that they can't detect a camera (and I'm sure that I have one, haha);
- Downloaded the Lenovo EasyCapture (or is it EasyCamera?) programme, but when it's installed, the message is: Lenovo EasyCapture can only be installed on Lenovo computers (and I am really sure that I have one, haha).
I checked some topics at the Lenovo Forums, but the resolutions that are given there won't work for me unfortunately.
Can somebody help me out?
Luca

Hi LucaR11,
Welcome to Lenovo Community!
As per the query we understood that you are facing issue with webcam not working in your S400 laptop.
Please try to check in testcam.com site if the webcam is working. Also try to connect an external webcam and check for this issue.
Check if the webcam is detected in device manager as imaging devices,
Hope this helps. Do post back if issue persists!
Best regards,
Ashwin.S
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Nokia Lumia 1520 - Screen Brightness Problem

I have two Nokia Lumia 1520.
Both of them have the same problem. I will explain the problem to you in detail and before that let me assure you I am a Windows Phone long time user , have been part of the development , developed several apps for the platform and I have used Lumia 800 , 720 , 920 , 925 and now 1520. So I am well aware of all the settings , sunlight readability , automatic brightness etc. This problem is not due to any of these , I can assure you
Now the problem ,
I set the automatic brightness option OFF
I move the brightness to HIGH
Then I lock the phone
When I unlock the phone , the brightness drops by 10% suddenly without any intervention
This problem happens sometime. Some days I see this problem , some days I don't and there are few days where I see this problem very heavily.
I purchased another 1520 and it has the same problem. I am very sure , from my experience that this is a firm ware issue. This is NOT a hardware problem , but a serious problem from your software end. It is prudent that Nokia recognizes this problem and finds a solution to this. Interestingly , I am not the only one who is facing this problem , the whole globe is facing the same problem and for such a pricey phone , this is a frustrating experience - very frustrating. I am sending some links , which will show the problems users are facing:
http://forums.wpcentral.com/nokia-lumia-1520/255608-lumia-1520-screen-brightness-dimming-unwantedly-...
http://forums.wpcentral.com/nokia-lumia-1520/251303-screen-dimming.html
http://forums.wpcentral.com/nokia-lumia-1520/252501-screen-brightness-fluctuates-purpose-bug.html
http://forums.wpcentral.com/nokia-lumia-1520/255508-lumia-1520-screen-brightness-problem.html
The phone is rock solid and amazing except this irritating problem.
I have only few days within which I can request a exchange from the merchant. So if any Nokia official can confirm that a software fix is on the way , it would be super helpful
Nokia , please help !
Moderator's note: We have removed the IMEI numbers. Posting of personal information is not allowed in this forum for security purposes.

I have Nokia Lumia 1520 Black.
I have also been facing the same problem with screen brightness.
The problem occurs only when the Brightness is in Automatic mode.
--> When the Brightness is set to Automatic mode & take out from dark location to bright location the display turns out to weird grey color.
--> And then if the brightness is set to low, medium or high display comes to normal.
Is this issue related to the hardware or software.
If it is related to the Software will you be able to fix it ? or else How about the replacing with the new one ?
Awaiting for the response.
nonnin8 wrote:
Same here i have white 1520
I have another problem with the screen, when it wakes up or i get a call the colours are off grey colour are very light grey and after few moments it turns to normal.
I am using WP 8.1

IdeaPad S400 Touch Windows 8 reinstall

Hello to all. This is my first post on this forum. I bought a IdeaPad S400 Touch several months ago (October) and one of the first things I did was create a backup image on an external hard drive using the tool in Windows 8. I then wiped the hard drive completely in order to install Ubuntu. I was going to put Windows 8 back ont he machine and have the two running side by side. However, I have not been able to reinstall Windows 8. I physically took the hard drive out of the laptop and completely erased it using Disk Utility on my Mac, making sure that the disk was reformatted as MS-DOS. I also created a separate partition, named Lenovo, of 20GB that contains the backup files from my original backup. Still, using OneKey recovery doesn't work, and I am unable to reisntall Windows 8. Please , would someone tell me what I am doing wrong and if there is any way to fix this mess I have created? I will say things were so much easier back in the good old days when PCs shipped with recovery media. Thanks.

Hi Robert,
Welcome to Lenovo Community!
I’m sorry to hear that the OKR (One Key Recovery) is not working as expected in your S400 touch Laptop, let me inform you that once the partition structure HDD (Hard Disk Drive) gets modified the hard disk recovery corrupts, if you have created the recovery media then you can use them and restore the Operating System. Please try running OneKey Recovery from hard disk, power off the laptop then press Novo button instead of pressing power button and check if it works and if OKR does not work. I suggest you to contact our Technical Support Team to get the details of the nearest Authorized Service Center to get the issue analyzed.
Click here to open a link where you can select the country and get the exact contact support number. I’m sure they will be a great help.
Do post us back for further queries.
Best Regards
Shiva Kumar
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Brightness problem. Problème de luminosité. NOKIA ...

Hello,
I've just bought a Nokia, but I can't find how to change the brightness settings, even if the user guide {part power-safe} suggest us to reduce it. The OS seems to be "Symbian", unfortunately it's not a free Operating System such as a Linux kernel(...) Have you got some ideas to solve this brightness problem?
Thanks,
Bonjour,
Je viens d’acheter un Nokia C3, avec comme système exploitation propriétaire "symbian"-il me semble-et je ne peux changer la luminosité de l'écran qui est trop forte. Même si, le guide utilisateur suggère de baisser la luminosité, afin de moins consommer d'énergie. Avez vous des conseils éventuels à me proposer pour régler ce souci. Peut être que ce problème aurait pu être résolu si le système d'exploitation du téléphone était libre.La communauté linuxienne aurait aisément pu trouver des solutions.
Merci d'avance.

ah...But could Nokia propose an issue to that problem? Such as for instance: an update or an upgrade? Because I really, can't use the mobile with a brightness like this. Thanks 4 the reply, I'm going to wait for an issue.
MODERATOR'S NOTE: We would like to inform you that we have edited your post as it is not written in English. Please be advised that Nokia Support Discussion only accepts posts written in English. Rest assured that you are always welcome to repost your questions or feedback in English. Thank you for understanding.

N8 Backlight (Brightness) Problem

Hi,
My new N8 (brought last thursday) have backlight (screen brightness) problems, meaning it sometimes automatically gets dimmed just after pressing a key and to resolve this i have to lock/unlock....otherwise it stays dimmed until it gets locked (by locked i mean the screenlock or keypad lock )....is my nokia n8 defective or is there any other solution??..
Also the brightness varies automatically sometimes...idk why this is happening!!!

rayhipkiss wrote:
I know it sounds counter intuitive, but you do need the screen to be brighter when in a bright environment, such as a bright sunny day. Conversely, a bright screen in a dim room would soon start to hurt your eyes and would be unnecessary anyway.
So, the screen dims when in dim light, and brightens when in bright light.
Cheers.
Ray
Oh. I see. So I think nothing's wrong with the sensor then.

Ideapad S400 Brightness Problem

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