[SOLVED] Screen goes dim after updating

[drakenator]

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?

[wintpe]

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

[drakenator]

Didn't work.

[drakenator]

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.

[wintpe]

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