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PS/2 keyboard stops working with ESX Server after upgrading to ESX Server 3.5 Update 5 (1011852)
In earlier releases, ESX Server does not check the system's Advanced Configuration and Power Interface (ACPI) table for PS device configuration causing no log messages to be displayed. However, ESX Server might face performance issues when ESX hosts installs PS/2 keyboard driver though no keyboards are detected.
In the ESX Server 3.5 Update 5 release, ESX Server checks the ACPI table to obtain the PS/2 device configuration. A log message might be generated on console during boot time and in /var/log/vmkernel if the ACPI configuration on ESX Server displays that PS/2 keyboard is not present.
A few seconds after boot up and login, you may also see an error similar to pc_keyb: controller jammed (0xFF) error.
The log message is displayed in case there is an issue in the ACPI table of ESX Server. If the ACPI table provides incorrect information as PS/2 device not present, when the PS/2 device is available on the system, users might find that the PS/2 keyboard does not work.
When the PS/2 keyboard stops working with ESX Server after upgrading to the ESX Server 3.5 Update 5 Release, users are advised to contact their hardware vendors.
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