[ltp] My new T42: Ubuntu, fan, acpi sleep

[Marius Gedminas]

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I've got a brand new T42 yesterday (model 2373-FWG).  I pulled out my
Ubuntu Warty install CD, discovered that it doesn't support NTFS
resizing, said to myself "ah, well, I can always just reinstall Windows
=66rom the recovery partition" and blew my WinXP away.  Mistake: when I
try to boot from the recovery partition, I get a progress bar at the
bottom, and then a blue screen saying "System error" and two lines of
meaningless numbers.  Oh well, I don't really need Windows anyway.

Almost everything worked right out of the box in Ubuntu (including ipw2200
wireless and accelerated 3D).  I used apt-get to upgrade to Hoary (which
will be released next month) and got other niceties such as GNOME 2.10
and working suspend + hibernation.

  To get working suspend, I had to edit /etc/default/acpi-support and
  uncomment the line that says ACPI_SLEEP=3Dtrue.

  To get working hibernation, I had to edit /boot/grub/menu.lst and add
  resume=3D/dev/hda5 (my swap partition) to the kernel command line.
  Disclaimer: I didn't yet have time to test that resume works, I just
  assume it does.

I now have three remaining problems:

  Noisy fan: after a few minutes of usage, the fan turns on and never
  turns off (unless I suspend the machine).  It does not seem to be
  related to system temperature: acpi -V reported 42=B0C when I resumed
  the machine this morning, and 41=B0C when the fan turned on a few
  minutes afterwards.  I have added Option "DynamicClocks" "on" to
  /etc/X11/xorg.conf, but that didn't help.

  High power drain during ACPI sleep: last night the machine was
  suspended for 6 hours and 20 minutes, and the battery went from 100%
  to 53%.  That's 3600 W or 8.3% per hour!

  Bluetooth was not detected: hcitool dev finds no devices.  Actually, I
  do not see anything resembling Bluetooth in lspci or lsusb... The
  laptop has a Bluetooth indicator lamp, and it is listed in the
  invoice, also, a sticker with the Bluetooth MAC address came in the
  box (but wasn't attached to the laptop itself).

Minor notes: Fn-F7 doesn't do anything in Ubuntu -- both the LCD and the
VGA port always show the same picture.  However when I pressed Fn-F7 in
the installer, the system crashed with a black screen.  Fn-F8 doesn't
toggle screen expansion in Ubuntu.  Fn-F5 disables the wireless
interface, but when I press it again, it doesn't reenable it.  Perhaps
ifdown eth1 + ifup eth1 would help.  I'll try it when I'm not sitting in
IRC over wireless ;)

Marius Gedminas
--=20
Experience varies directly with equipment ruined.

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