I have a Samsung N220 Plus netbook and encountered the following: After a clean new install of Natty (Beta 1) suspend to ram works out of the box but unfortunately adapting backlight did not work. Hence I installed the package samsung-backlight from the ppa of voria (for maverick, since natty packages are not yet available) which resolved this problem. As a matter of fact from there on suspend to ram did not work for me anymore and i encountered the same problems as described in this bug report. Unloading the samsung-backlight module before suspend made suspend to ram working again. More explicitly I followed the steps proposed here http://www.voria.org/forum/viewtopic.php?f=3&t=625&hilit=N220&start=60
0) install samsung-backlight from the ppa of voria 1) modifiy in /etc/default/grub following line from GRUB_CMDLINE_LINUX_DEFAULT="quiet splash' to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" 2) sudo update-grub; sudo update-initramfs -u 3) add the following text to the end of /etc/modprobe.d/blacklist.conf: blacklist samsung-backlight 4) edit /etc/rc.local and paste before the "exit 0" statement: modprobe samsung-backlight 5) create a file called /etc/pm/config.d/unload_modules containing: SUSPEND_MODULES="samsung-backlight" I emphasize I did not have to append "intel_idle.max_cstate=0 " to grub to make suspend to ram working! So everyone encountering the problems described in this bug report should check whether samsung-backlight is installed and whether unloading its module before suspend resolves the problem! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/640100 Title: Maverick fails to wake up on Samsung N150 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
