Ubuntu12.04 restart Stuck Problem solved I installed Ubuntu12.04 on a relatively old-fashioned desktop computer, the restart is stuck in the Ubuntu logo screen, each restart can only be forced to boot and shut down, this is especially unpleasant, so you can find some methods on the Internet: 1. solution: On the login page, click the ubuntu login icon, one of which is ubuntu 2D. Click here to log on, and then restart the machine, solve the problem. 2. for acpi and ubuntu incompatibility issues, modify the grub file according to the description in the article: specific practice: 1) sudo gedit/boot/grub. cfg 2) EDIT grub. cfg, find the statements that boot linux, and add "ACPI = off", for example: linux/boot/vmlinuz-2.6.35-30-generic-pae root =/dev/sda6 loop =/ubuntu/disks/root. disk ro quiet splash acpi = off I solve the problem through the first method (more than a dozen tests ).