In Exalogic "kernel: Error: Driver 'pcspkr' is already registered, aborting" messages are seen in /var/log/messages

Asset ID:	1-72-1948665.1
Update Date:	2017-11-24
Keywords:

Solution Type Problem Resolution Sure

Solution 1948665.1 : In Exalogic "kernel: Error: Driver 'pcspkr' is already registered, aborting" messages are seen in /var/log/messages

Applies to:

Oracle Exalogic Elastic Cloud Software - Version 2.0.6.0.0 and later
Exalogic Elastic Cloud X4-2 Hardware - Version X4 to X4 [Release X4]
Exalogic Elastic Cloud X3-2 Hardware - Version X3 to X3 [Release X3]
Linux x86-64
Oracle Virtual Server(x86-64)

Symptoms

In Exalogic releases following errors are printed in the /var/log/messages repeatedly in guest vServers.

Nov 25 12:57:02 XXXX kernel: Error: Driver 'pcspkr' is already registered, aborting...
Nov 25 12:57:04 XXXX kernel: Error: Driver 'pcspkr' is already registered, aborting...
..

Nov 11 12:34:02 XXXX kernel: Error: Driver 'pcspkr' is already registered, aborting...
Nov 11 12:34:02 XXXX kernel: Error: Driver 'pcspkr' is already registered, aborting...

Cause

The message arises from an alias conflict between snd-pcsp and pcspkr. These messages can be safely ignored.

For further details refer to Linux UEK 2.2 Known Issues doc link.

Solution

These messages can be safely ignored as it does not cause any functional problem.

If you want to prevent the message from being displayed, add the following line to /etc/modprobe.d/blacklist.conf:

blacklist snd-pcsp

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