[Bug 500666] Re: Toshiba M505-S4972 The Fan does not work unless i suspend and bring it back up

peterwil 500666 at bugs.launchpad.net
Sat Aug 21 11:48:04 UTC 2010


Wow! I have GREAT NEWS regarding my Toshiba Laptop L305-S5881.
I struggled with this issue since I bought the laptop in '08 October.
Reported it a number of issues. Tried 
i) Hardy - Ubuntu 8  (temps > 75C ) , then
ii) Jaunty - Ubuntu 9.0.4( temps <65 but definitely still hot )
iii) compiled the 2.6.30 kernel and installed the image all to no avail 
then gave up the idea of running Ubuntu solely on this laptop, being aware
that the laptop could fry over.
Last week dual booted Vista crashed - had to recover my email from thunderbird and
then decided to look into Ubuntu again based on Jeremy's email a couple of months ago.
After looking through the acpi module source code -noticed a patch was introduced in sleep.c
referencing "Toshiba Satellite L300" to set the EIN bit , 
changed this string to "Toshiba Satellite L305" and recompiled
Kernel.. Still no difference.

Then did an upgrade to 9.10 . After the upgrade and a reboot VOILA !  
i) My Fn keys are working. Suspend actuallly WORKS! .. It never did. always had to power down the switch
to make it recover from either Suspend to RAM or Hibernate. -dmesg always showed errors in ACPI .
ii) And then the magic .. acpi -t shows 45 C... !!! This laptop has never showed this reading after 10 mins.
of usage before this.

So fellow Ubuntu aficianados! using Toshiba Laptops L305D or similar
models.

Please try out  the generic kernel 2.6.31-22 ( 9.10 upgrade ). The overheating and the Suspend issues
are definitely fixed for this model in this release.

My salutations to the developer/s  who fixed this most annoying bug/bugs which almost rendered the 
Laptop unusable on Ubuntu.. It would have perhaps taken my weeks of ploughing through the 
ACPI modules ( sleep.c, fan.c etc ) to try and fix this monster.! Not to mention the 1 hour kernel compile
on each change!.. Glad I can get back to the application space!.

Cheers and best regards
Peter William

-- 
Toshiba M505-S4972 The Fan does not work unless i suspend and bring it back up
https://bugs.launchpad.net/bugs/500666
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