mactel-support team mailing list archive

[Mario Schwalbe <schwalbe@xxxxxxxxxxxxxxxxx>]

Thanks. According to other machines the maximum could also be 0x1ffff. Correct? Nevertheless, to update the driver, I need the output of:
$ cat /sys/class/dmi/id/sys_vendor
$ cat /sys/class/dmi/id/product_name

Regarding your question: No. The driver is supposed to allow to turn off
backlight completely. But how many steps do you have? In theory, the
range should be 0-0x1ffff and userland tools are supposed to scale to a
human-friendly range.

ciao,
Mario

-- 
nvidia-bl-dkms 0.16.10 Blank screen on brightness change
https://bugs.launchpad.net/bugs/599607
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Support, which is the registrant for Mactel Support.

Status in Mactel Support: New

Bug description:
I have a Sony Vaio VPCCW21FX (Nvidia 310M) running Lucid.

After I installed nvidia-bl-dkms 0.16.10, the brightness buttons showed the brightness indicator but it didn't move.
Manually writing values to /sys/class/backlight/nvidia_backlight/brightness turn the backlight completely off (the backlight only turned back on after a suspend/resume).

Then I copied sony brightness scripts from here:

http://ubuntuforums.org/showthread.php?t=1420341

... after that, using the brightness buttons on the laptop turned the screen off as well.