intel_backlight slow change with function keys

Hello all openSuse guys! I’m new in OpenSuse coming from Ubuntu. I recently bought a Dell Inspiron which came with ubuntu 14.04 preinstalled. I had an issue with the touchpad fixed by blacklisting i2c-hid driver, and works like a charm. The problem now it’s that the backlight with function keys is very slow! I tried many things modifying /etc/default/grub, none of which worked. Also tried the file /etc/X11/xorg.conf.d/20-intel.conf with no luck.
listing /sys/class/backlight/ i only have intel_backlight, which curiously have max_brightness and min_brightness as 7812. tried the acpi_backlight=vendor, no luck, acpi_osci=, no luck, acpi_osci=Linux, no luck. I’m running out of ideas, and i don’t know much about debugging this kind of issues. I hope you can help me!

On Thu 02 Jul 2015 03:26:02 AM CDT, jdecuirm wrote:

Hello all openSuse guys! I’m new in OpenSuse coming from Ubuntu. I
recently bought a Dell Inspiron which came with ubuntu 14.04
preinstalled. I had an issue with the touchpad fixed by blacklisting
i2c-hid driver, and works like a charm. The problem now it’s that the
backlight with function keys is very slow! I tried many things modifying
/etc/default/grub, none of which worked. Also tried the file
/etc/X11/xorg.conf.d/20-intel.conf with no luck.
listing /sys/class/backlight/ i only have intel_backlight, which
curiously have max_brightness and min_brightness as 7812. tried the
acpi_backlight=vendor, no luck, acpi_osci=, no luck, acpi_osci=Linux, no
luck. I’m running out of ideas, and i don’t know much about debugging
this kind of issues. I hope you can help me!

Hi
What about;


acpi_osi=\"!Windows 2012\"


Cheers Malcolm °¿° LFCS, SUSE Knowledge Partner (Linux Counter #276890)
SUSE Linux Enterprise Desktop 12 GNOME 3.10.1 Kernel
3.12.43-52.6-default If you find this post helpful and are logged into
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Hey, thanks for the fast answer! i tried that too, but with no luck! is there any way to debug this? this is the only problem that stops me from moving from Ubuntu, happened with Fedora 22, openSUSE, and Elementary OS Freya. I like a lot openSuse but this is the problem, also with Kubuntu 14.04 works fine. don’t know why!

On Thu 02 Jul 2015 05:26:01 AM CDT, jdecuirm wrote:

malcolmlewis;2717705 Wrote:
> Hi
> What about;
> >
Code:

> >
> acpi_osi="!Windows 2012"
>

> >
>
> –
> Cheers Malcolm °¿° LFCS, SUSE Knowledge Partner (Linux Counter
> #276890)
> SUSE Linux Enterprise Desktop 12 GNOME 3.10.1 Kernel
> 3.12.43-52.6-default If you find this post helpful and are logged into
> the web interface, please show your appreciation and click on the star
> below… Thanks!


Hey, thanks for the fast answer! i tried that too, but with no luck! is
there any way to debug this? this is the only problem that stops me from
moving from Ubuntu, happened with Fedora 22, openSUSE, and Elementary OS
Freya. I like a lot openSuse but this is the problem, also with Kubuntu
14.04 works fine. don’t know why!

Hi
Sounds like you would need to see what is on the default install (as in
Ubuntu) have in for example the grub command line. Maybe they have done
some BIOS tweaks? All hard to say without some sort of comparison.

Then once have that data can try and figure out what is happening, but
I think it would also result in a bug needing generation.


Cheers Malcolm °¿° LFCS, SUSE Knowledge Partner (Linux Counter #276890)
SUSE Linux Enterprise Desktop 12 GNOME 3.10.1 Kernel
3.12.43-52.6-default If you find this post helpful and are logged into
the web interface, please show your appreciation and click on the star
below… Thanks!