Changes between Version 72 and Version 73 of User_FAQ

Timestamp:

Mar 5, 2008 1:58:06 PM (17 years ago)

Author:

Frank Mehnert

Comment:

--

User_FAQ

@@ -45 +45 @@
  * '''USB on openSUSE''': See the [http://en.opensuse.org/Virtualbox this] on the openSUSE support pages.
 
- * '''Tickless Linux timer''': !VirtualBox currently does not work well on Linux kernels with tickless timer support (CONFIG_NO_HZ enabled). We are investigating the problem but in the meantime you should disable the tickless timer by disabling that config option or by adding '''nohz=off''' to the Linux kernel command line.
+ * '''Tickless Linux timer''': !VirtualBox currently does not work well on Linux kernels with tickless timer support (CONFIG_NO_HZ enabled). We are investigating the problem but in the meantime you should disable the tickless timer by disabling that config option or by adding '''nohz=off''' to the Linux kernel command line.[[BR]]
+  Starting with !VirtualBox 1.5.6 the Linux kernel module knows the parameter `force_async_tsc`. Try loading the kernel module with
+{{{
+modprobe vboxdrv force_async_tsc=1
+}}}
+  and see if that helps to improve things for you.
 
  * If you get a message saying '''"!VirtualBox kernel driver not accessible, permission problem"''' when starting !VirtualBox immediately after installation, make sure that your user account is a member of the `vboxusers` group. This group is created when !VirtualBox is installed, but you will need to manually add all users to it who are to be allowed to run !VirtualBox. The documentation accompanying your Linux distribution should provide information about how to do this. If not, the following should also work on most Linux systems. These commands should be run as the Administrator user from the command line.