During shutdown or reboot system will hang.
This document (7009779) is provided subject to the disclaimer at the end of this document.
SUSE Linux Enterprise Desktop 11
The problem can occur with or without a Support Pack installed.
warm = Don’t set the cold reboot flag
cold = Set the cold reboot flag
bios = Reboot by jumping through the BIOS (only for X86_32)
smp = Reboot by executing reset on BSP or other CPU (only for X86_32)
triple = Force a triple fault (init)
kbd = Use the keyboard controller. cold reset (this is the default)
acpi = Use the RESET_REG in the FADT
efi = Use efi reset_system runtime service
pci = Use the so-called “PCI reset register”, CF9
force = Avoid anything that could hang.
Most of the time the problem can be fixed by using one of the following two parameters:
Try these first then move on to the others if needed.
Each time you boot up with a new parameter you can verify that it was really used in the kernel load line by entering this command:
This will return the options the kernel was loaded with and would look something like this:
root=/dev/disk/by-id/ata-WDC_WD3200BEKT-75KA9T0_WD-WXA1A80E1055-part5 resume=/dev/disk/by-id/ata-WDC_WD3200BEKT-75KA9T0_WD-WXA1A80E1055-part3 splash=silent vga=0x314 reboot=bios
Just look for the "reboot=" parameter and make sure it is appropriate.
Once the parameter is found that works for the system it can be added to the grub menu so it will be included on every boot. Here are the steps:
Load YaST and take the selection for System--> Boot Loader.
Highlight the default selection (the one with the check mark in the first column) and click the Edit button.
In the entry titled "Optional Kernel Command Line Parameter" add your new parameter to the end of the line. Click OK to save the new setting. Back on the Boot Loader Settings window click OK again and reboot the system to test it out.
In addition, you can see in this file that there are specific settings for this parameter applied for certain models of Dell, HP, and others to work around BIOS issues. Of course, the exceptions are not complete so manually changing this parameter will be required for some systems.
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- Document ID:7009779
- Creation Date: 21-Nov-2011
- Modified Date:03-Mar-2020
- SUSE Linux Enterprise Desktop
- SUSE Linux Enterprise Server
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