Inspiron 15R SE, Can't adjust screen brightness after reopening lid

Hi frank26080115,

Welcome to the Dell Community Forum.

Thank you for posting on Dell Community Forum. You can try Re-Installing the updated Drivers from the Dell's support website and check if the issue still persists.

Below is the link to download the Video Drivers:

www.dell.com/.../19

Please reply to the post if you have any further queries.

Thanks & Regards

Dell_Munawar_P

Dell Social Media Responder

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I did re-install the drivers, all downloaded today, it did not help, the problem still happens.

I am certain that this is not a hardware issue. I discovered that it can only happen after logging on to Windows, if I try to do the same thing while on the login screen, it does not appear to happen.

Also it only happens if the lid is down for about one second or more, if I do it very quickly, I can still adjust the brightness after.

I have replaced the LCD in my previous laptop before, reseating a cable should be no problem for me.

Hi frank26080115,

Welcome to the Dell Community Forum

Thank you for your reply to the post, There is an option available to reseat  LCD cable but that is complicated and we will not recommend suggesting it and requesting you to please accept my friend request and provide me with your Computer Service tag as a private message so that i can check the hardware warranty status and do the needful.

Please reply to the post if you have any further queries.

Thanks & Regards

Dell_Munawar_P

Dell Social Media Responder

https://twitter.com/DellCares

http://www.facebook.com/Dell

Hi frank26080115,

Welcome to the Dell Community Forum

Thank you for your reply to the post, please try and change the settings for sleep mode as by default the settings are ENABLED or ON.
in order to disable them please follow the steps mentioned below:

Click on Control Panel

Select View by Category

Click on Hardware and Sound

Click on Power Options and change the settings to DISABLE or OFF and see if it does any change.

I have pasted a screen shot and also please follow the steps mentioned below:

And also change the option under Power Settings as shown below on the screen shot:


Please check and change the settings and Disable them and let us know if this changes anything

Thanks & Regards

Dell_Munawar_P

Dell Social Media Responder

https://twitter.com/DellCares

http://www.facebook.com/Dell

I have already disabled sleep, like I said in my first post. I have tried changing the settings again, it did not fix the problem, I have also tried changing them and restarting, it did not help

Also another strange behaviour I discovered is that if I am not able to change the screen brightness, then the brightness bar cannot be dragged, as show here http://youtu.be/iKMoN7MsC1I

I think a hardware problems is extremely unlikely because the problem never happens if I am not logged into Windows. It must be a piece of software that is loaded after login that has the bug.

You should get an engineer or developer to talk to me instead of giving me cookie cutter troubleshooting steps. I hope you are at least trying to replicate this problem in-house

Apparently Dell called my house, but I don't really live at that address. Please use something online to contact me or privately ask me for my cell phone number.

I also have this same problem.  It also happened on my old Inspiron 1525.  It would seem to have something to do with changing the closing the lid setting to 'Do Nothing'.