After various experiments, I've reached a solution for this laptop. I've installed gentoo, compiling a kernel with CONFIG_SONY_LAPTOP enabled. With that driver included, setting reboot=bios on the kernel command line worked (of course, as reboot=bios depends on x86-32, it probably won't work on x86-64 and another solution will be needed). Even though I found this solution in gentoo, it would almost certainly work in Ubuntu too.
Does Ubuntu's default kernel config include CONFIG_SONY_LAPTOP and/or CONFIG_SONYPI_COMPAT? This would probably be quite useful to include as it improves support for sony vaio laptops. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/668274 Title: sony vpcw218ag netbook fails to reboot -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs