Power management on intel i945 video chipset
Marcelo Magno T. Sales
mmtsales at gmail.com
Wed Aug 22 12:14:27 UTC 2007
People,
I have a Centrino notebook with intel i945 video chipset and power
management has been a little of a problem lately.
If I use the xorg i810 driver, I can control LCD brightness correctly
and I can suspend to RAM, but I can't resume after a suspend. The LCD
will not turn on again. I had this problem in FC6 and corrected it
altering the suspend and resume scripts to save the state of LCD
brightness to a file when suspending and reading it back when
resuming. In FC6, this information was in /proc/acpi/asus/brn and the
functions for suspending and resuming were
in /etc/pm/functions-intel.
In F7, I have the same problem with i810 driver (can't resume after
suspending, LCD does not turn on), but there's no /proc/acpi/asus/brn
and I couldn't find the suspend/resume functions.
So I tried the new intel driver. After booting, it allows me to adjust
LCD brightness as I wish, and it turns on the LCD correctly after
suspending/resuming. However, once I've done a suspend/resume, the
LCD brightness is set to maximum and I can't adjust it anymore,
unless I reboot.
Anyone has this working 100% on a intel i945 video chipset? How did
you do it?
Thanks,
Marcelo
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