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3538 Posts

07-12-2010

Malaysia

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Re: x220 Brightness Keys Fail after Hibernate

2011-07-05, 16:52 PM
@BofA,

This is as per designed that is why in the Lenovo preload of Windows, Power Manager, Power Management driver, OSD and the others are preinstalled in order the system to work.

//JameZ
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187 Posts

10-12-2008

Seattle, US

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Re: x220 Brightness Keys Fail after Hibernate

2011-07-09, 14:00 PM
Count me in, same issue here.
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86 Posts

03-14-2011

Atlanta, GA

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Re: x220 Brightness Keys Fail after Hibernate

2011-07-10, 3:21 AM

wrote:

,

 

I installed clean OS, then Intel display driver. No other drivers or software are installed. Issue with brightness buttons iss still here :(

 

Why not to do this buttons more "hardware"? For example, when I boot from WinXP live CD, brightness buttons don't work at all and brightness is always MAX. When I install clean Win7 without drivers, brightness buttons don't work, and begin to work only after drivers installed. On ALL other brands of notebooks there is no such problem! 


This is a very good point.  On my other laptops, the brightness keys even work in the bios before any drivers are loaded.  It is curious why the Lenovo design relies on drivers instead of bios or hardware-level control.

x220 | 4286-CTO | i5-2520M | 8Gb G.Skill | OCZ SSD
Win 7 Home Premium SP1 64bit
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22 Posts

06-09-2011

Russia

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Re: x220 Brightness Keys Fail after Hibernate

2011-07-20, 7:57 AM
It seems like issue is onnly happens when "Lid close action" is set to "nothing". In this case when I open lid while system in sleep mode, it don't wake up until I press power putton. After that brightness buttons sometimes stop working, but if I close lid and open it again, brightness OSD appears on screen and brightness buttons work again.
If "Lid close action" is set to "sleep", system wakes up when I open lid without pressing power button and brightness buttons work correctly without "close lid - open lid" iteration.
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3538 Posts

07-12-2010

Malaysia

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Re: x220 Brightness Keys Fail after Hibernate

2011-07-20, 8:44 AM
@BofA,

I just tried once on my T410. When you wake the laptop up from sleep using power button however when the laptop is fully botted up, I would need to swipe my fingerprint for my AD password. Once laptop is in, I can see the OSD for brightness blink once and its working fine.

Also am using Power Manager 3.62.

http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/8ru410ww.exe

Idle timer - Enter system standby 2 minutes
System Hibernation - never

Lid close do nothing.

//JameZ
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22 Posts

06-09-2011

Russia

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  • Message 66 of 93

Re: x220 Brightness Keys Fail after Hibernate

2011-08-24, 13:07 PM
Any good news here?
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3538 Posts

07-12-2010

Malaysia

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Re: x220 Brightness Keys Fail after Hibernate

2011-08-25, 6:25 AM
@BofA,

I tested this on my colleague's X220 and it works fine.

Could you try this that was solved just yesterday.

http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/On-Screen-Display-not-working-after-resuming-from-sleep-mode/ta-p/517219

//JameZ
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5 Posts

10-07-2011

canada

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  • Message 68 of 93

Re: x220 Brightness Keys Fail after Hibernate

2011-10-19, 6:11 AM

I'm having the same problem.

 
Edit: I do have lastest versions of all software and I did try the suggested solutions in this thread. Most of the time to fix the issue I have to close the lid and open it (sleep/unsleep). Sometimes it does not work though, and I have to manually go to the control panel to change brightness. It's not a deal breaker, but it's annoying when working in variable light conditions (in the train for example)

 

 

Symptoms:

While windows is resuming from hibernation and in POST, I can change the brightness (is this new? I can't remember being able to do that with older bioses).

 

When back from hibernation, the brightness indicator does flash once.

 

Up/Down does nothing.

 

Changing the brightness in windows power manager does work, so the problem is on lenovo's side (but we already knew that).

 

After I've set brightness to zero in windows PM, when I press Fn + End, the on screen display does show 0. But Fn + Home does nothing.

 

While I do agree that the problem might be hard to diagnose, it still has been reported several months ago and there is still no fix.

If lenovo can't/don't want to fix their own software, maybe someone could write a autohotkey script to address this issue?

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9644 Posts

12-27-2009

Canada

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Re: x220 Brightness Keys Fail after Hibernate

2011-10-19, 13:29 PM
The issue still does indeed exist.

For my W520, when it happens (50% of the time), it either takes ten seconds for it to start working by itself (50% of the time) or requires a lid close/reopen (other 50% of the time).

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
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3538 Posts

07-12-2010

Malaysia

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Re: x220 Brightness Keys Fail after Hibernate

2011-10-20, 5:57 AM
@nathan32 and colonel,

Do both of you use the MS Security Essential?

Try this

http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/On-Screen-Display-not-working-after-resuming-from-sleep-mode/ta-p/517219

//JameZ
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