Thinkpad x230 display brightness

[Любомир Григоров]

2013/3/6 Sergey Nasonov <snasonov at bcc.ru>

> **
>
> I have tested Intel adapter. And test results shows problem with
> brightness control. Brightness level stop changing after loading kernel.
>

Brightness controll is possible by doing the following

# cd /usr/ports/sysutils/acpi_call && make install clean
# rehash
# kldload acpi_ibm
# kldload acpi_call
# acpi_call -p '\VBRC' -i N

where N is 0-16. (strangely, 15 is brighter than 16).

Another problem I found is that laptop just hang during shutdown. I suppose
> that hang may be related to VT switch, because it still dont realized in
> case of Intel KMS driver.
>
> I don't have a problem with shutdown. However, issuing halt or shutdown -h
now, just results in a reboot after key is pressed. Not a problem, I just
hold power button at that point.

-- 
Lyubomir Grigorov (bgalakazam)