Ubuntu
linux-source-2.6.15 package

  1. Bug #35213
  2. Comment #35

Comment 35 for bug 35213

Revision history for this message
Open Sense Solutions (opensense) wrote :

right after I left that last message I started thinking about hdparm...
long story short, it is the write cache control, which makes perfect sense -- if you turn off the hard drive write caching, writes could be painfully slow.
So, the solution is to set
CONTROL_HD_WRITECACHE=0
in /etc/laptop-mode/laptop-mode.conf
and everything seems to work great. If I set it back to 1, it is slow again, so I'm pretty confident this is it.
Thanks!