Ubuntu
upower package

  1. Bug #1342341
  2. Comment #2

Comment 2 for bug 1342341

Revision history for this message
Ruslan (b7-10110111) wrote :

This appears to be because upowerd calls `pm-powersave false`, which in turn activates /usr/lib/pm-utils/power.d/laptop-mode, which writes 10 and 5 to /proc/sys/vm/dirty_ratio and /proc/sys/vm/dirty_background_ratio, respectively, replacing default 20 and 10.
Commenting this line in laptop-mode file works around this bug.

Now I'm not sure whether this bug is a kernel bug or a pm-utils one. It seems definitely not a upower bug.

BTW, this bug doesn't appear on another machine I tested it on, with GA-I915G-MF motherboard, while it appears on the problematic motherboard MSI B85-G41 PC Mate.