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--- utilisateurs:nsauzede [Le 18/02/2010, 14:03] – nsauzede
+++ utilisateurs:nsauzede [Le 18/02/2010, 14:23] (Version actuelle) – nsauzede
@@ Ligne 1: / Ligne 1: @@
+How to totally most machine freezes on Aspire One 751 running Ubuntu 9.10\\
+date=2010/02/14\\
+kernel=Linux aspire1 2.6.31-17-generic #54-Ubuntu SMP Thu Dec 10 16:20:31 UTC 2009 i686 GNU/Linux\\
+  - Upgrade BIOS to version 3211 at least
+  - Upgrade Ubuntu to latest package versions (in particular the kernel, graphics (poulsbo) and sound drivers (snd-hda-intel))
+  - edit /etc/modprobe.d/alsa-base.conf and ensure the following lines concerning snd-hda-intel remain commented :
+...\\
+# Power down HDA controllers after 10 idle seconds\\
+options snd-hda-intel power_save=10 power_save_controller=N\\
+options snd-hda-intel model=acer\\
+You should obtain :
+...\\
+# Power down HDA controllers after 10 idle seconds\\
+#options snd-hda-intel power_save=10 power_save_controller=N\\
+#options snd-hda-intel model=acer\\
+=> Now you should not experience those nasty frequent random machine freeze...\\
+(since I applied these patches on my system, I only got one suspect freeze after running it for more than two weeks - compared to multiple freezes per day before !)
+one good test to experience machine freeze (before/after following this procedure), is to listen to music through deezer.com\\
+try this with unmodified alsa-base.conf Ubuntu or Windows XP that is shipped by Acer, it will freeze very quickly !!