display is dimmed

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display is dimmed

Postby dexl on Mon Oct 24, 2011 4:04 pm

I'm running Fluxbox LM9 on my Asus EeePC 1005PE.

Each time I log in the display is barely visible, so I need to manually click on Power Manager and once the window opens, the brightness is back to normal, i.e. 99%. I don't even have to touch the slider, just close the Power manager window and the display brightness is perfect. BUT if I set it to 100% is goes dimmer! (how strange is that?)

My question: How can I set it so that the 99% brightness stays on each boot? Is this a bug? Thanks in advance! :D
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Re: display is dimmed

Postby xenopeek on Mon Oct 24, 2011 4:24 pm

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Re: display is dimmed

Postby dexl on Thu Oct 27, 2011 10:57 am

Vincent Vermeulen wrote:Try this solution: http://forums.linuxmint.com/viewtopic.php?f=90&t=83538#p484265


Thanks. I followed this advice and now my screen brightness is 0 when I boot, so I can't even see when to type in my user name and password to change this to the previous state of being only dimmed - the screen is now all BLACK, and I can't see anything. :( I'm booting off a USB stick to type this.

Again, the problem is that when the screen brightness is set to 100% it is DARKER than when I set it to 99%. So the solution above makes it impossible to fix the problem as it makes it go black altogether. Even now (I'm booting a live Ubuntu system) under display settings, the brightness behaves in the same funny way. Any ideas?
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Re: display is dimmed

Postby xenopeek on Thu Oct 27, 2011 11:45 am

You can try with a different command? Start with:
Code: Select all
setpci -s 00:02.0 F4.B=50

Should be half brightness, and you can go up or down from there. But if 99 is a good value, use that.
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Re: display is dimmed

Postby shengchieh on Thu Oct 27, 2011 10:48 pm

Type whatever command works into your autostart script. Then the change is after every boot.

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Re: display is dimmed

Postby FaTaL_ErrOr on Tue Nov 15, 2011 5:27 am

After choosing the linux mint operating system from your bootloader, keep pressing Fn (button) from your laptop while tapping the right arrow (brightness increase) untill you see the select user welcome screen. Thats my trick or else i have the same problem as you. Then it finally boots with full brightness. Hope that helped.
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Re: display is dimmed

Postby dexl on Tue Nov 15, 2011 6:30 am

Thanks everyone. I fixed it by doing what Vincent Vermeulen recommended. Set 99 for brightness.
Code: Select all
setpci -s 00:02.0 F4.B=99
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Re: display is dimmed

Postby kpearsonxyz on Sun Dec 08, 2013 3:34 am

Please don't use the setpci command unless you thoroughly study how bad it can hurt your hardware. A much better option would be to try xbacklight -inc 100 (or in your case, xbacklight -inc 100;xbacklight -dec 1) to set the brightness and if that works, script it, Ie:

Code: Select all
#!/bin/sh
# Karl Pearson
# 2013.12.08 - 00:12:00

xbacklight -inc 100
xbacklight -dec 1


I hope that works for you...
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