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List:       opensuse
Subject:    [opensuse] Re: 13.1 - screen brightness stuck on high - unresponsive to fn keys - how to fix?
From:       Malcolm <malcolmlewis () cableone ! net>
Date:       2014-07-14 19:55:15
Message-ID: 20140714145515.452e1620 () gekkota ! dyndns ! org
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On Mon 14 Jul 2014 11:35:51 AM CDT, David C. Rankin wrote:

>All,
>
>   One new issue I have with 13.1 is my Toshiba laptop brightness is
> stuck on 
>high (really high) and I cannot adjust it with the normal function
>keys. The normal method for increase/decrease is:
>
>   fn + F6 - lower (8 steps)
>   fn + F7 - raise (8 steps)
>
>   What is strange is that this hardware brightness control has always
> worked, 
>regardless of the OS (XP/DOS, openSuSE 11.0, 11.4, Archlinux) and
>regardless of the driver (radeon, radeonHD, etc..)
>
>   Now it is just stuck. I can pop the 11.4 drive back in and it works
> fine. 
>What could be causing this? Moreover, what could be the fix?
>
>
Hi
Is the backlight service running?
systemctl status systemd-backlight@acpi_video0.service

or something similar?

On my HP ProBook 4440s I had to add an acpi boot option(UEFI and
secure boot on);

acpi_osi=\"!Windows 2012\"

-- 
Cheers Malcolm  ° ¿ ° SUSE Knowledge Partner (Linux Counter #276890)
openSUSE 13.1 (Bottle) (x86_64)  3.10.1 Kernel 3.11.10-17-desktop
up 3 days 5:14, 6 users, load average: 0.03, 0.03, 0.05
CPU Intel ® B840@1.9GHz | GPU Intel ® Sandybridge Mobile


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