[SOLVED] Screen goes dim after updating

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[SOLVED] Screen goes dim after updating

Postby drakenator » Jan 12th, '14, 22:01

After updating my Mageia packages I had a problem booting. The boot hung at "reached target graphical interface." I booted safe mode and selected VESA with XFdrake, then rebooted and my desktop is back. But now the screen is dim. Weirdly enough, the problem before (and part of the reason I updated all of my packages) is because the screen was at maximum brightness (it's a laptop, Toshiba) no matter what I did. Now the screen dimmer on the battery setting stays at the lowest position. What the sam scratch is going on? Any suggestions?
Last edited by drakenator on Jan 16th, '14, 04:51, edited 1 time in total.
drakenator
 
Posts: 7
Joined: Jun 30th, '13, 21:47

Re: Screen goes dim after updating

Postby wintpe » Jan 13th, '14, 11:52

sometimes dim screen can indicate that the refresh rate is not optimal, ie

to higher resolution and too higher refresh, because it has not correctly identified your monitor.

so go into the mageia control panel select setup graphical server

and make sure that the monitor is specified correctly.

if it is then perhaps try limiting the available refresh rates in the /etc/X11/xorg.conf

this is the section from my file
Code: Select all
Section "Monitor"
    Identifier "Monitor0"
    VendorName "Samsung"
    ModelName "S27A950D"
    HorizSync 26.0 - 140.0
    VertRefresh 120.0
EndSection



regards peter
Redhat 6 Certified Engineer (RHCE)
Sometimes my posts will sound short, or snappy, however its realy not my intention to offend, so accept my apologies in advance.
wintpe
 
Posts: 1204
Joined: May 22nd, '11, 17:08
Location: Rayleigh,, Essex , UK

Re: Screen goes dim after updating

Postby drakenator » Jan 16th, '14, 04:06

Didn't work. :(
drakenator
 
Posts: 7
Joined: Jun 30th, '13, 21:47

Re: Screen goes dim after updating

Postby drakenator » Jan 16th, '14, 04:51

Solved. From https://wiki.mageia.org/en/Mageia_3_Err ... top_issues I used

acpi_osi="!Windows 2012"

By hitting f3 at the grub menu and appending this to the line of options.
drakenator
 
Posts: 7
Joined: Jun 30th, '13, 21:47

Re: [SOLVED] Screen goes dim after updating

Postby wintpe » Jan 17th, '14, 11:50

ok if you had said the brightness controls dont work, that would have
directed me to reply, that i have that problem also, and im going to try your fix suggestion on my ux31a

as it might be same.

but i have seen ati drivers set refresh wrong and give the symptom i interpreted you as describing.

adding acpi_osi="!Windows 2012" fixed my backlight keys, ill update the other thread in video also where someone else had same prob

thanks

regards peter
Redhat 6 Certified Engineer (RHCE)
Sometimes my posts will sound short, or snappy, however its realy not my intention to offend, so accept my apologies in advance.
wintpe
 
Posts: 1204
Joined: May 22nd, '11, 17:08
Location: Rayleigh,, Essex , UK


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