Comment 25 for bug 853244
Revision history for this message
| Alkis Georgopoulos (alkisg) wrote Re: Acer Aspire 5742Z brightness keys not working | #25 |
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bbfa235
(Get the code!)
Hi! No, updating the BIOS didn't change anything at all.
$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
V1.30
08/13/2012
I tried both with the raring kernel (3.8.0-33-generic ) on my Precise system,
and with a Trusty daily live CD, with the same results as usual.
Summary:
* The brightness keys make the brightness window pop up, but the brightness isn't changed at all.
* Comment #22 from ag200spr does apply to me. So it is possible to change the brightness by e.g.
# echo 123 > /sys/class/
* If I boot with `acpi_osi=Linux` in the kernel command line, I can change the brightness,
but the brightness window doesn't pop up.
So fixing the problem should be easy, if some upstream developer was actually interested in this.
Thanks,
Alkis