Patch Name: PHKL_17558

Patch Description: s700 10.26 Audio hardware clock dead and other panics

Creation Date: 99/02/10

Post Date:  99/02/19

Hardware Platforms - OS Releases:
	s700: 10.26

Products: N/A

Filesets:
	OS-Core.CORE-KRN

Automatic Reboot?: Yes

Status: General Superseded

Critical:
	Yes
	PHKL_17558: PANIC

Path Name: /hp-ux_patches/s700/10.X/PHKL_17558

Symptoms:
	PHKL_17558:
	Port of PHKL_11578

	(PHKL_11578)
	The system will panic with an "Audio hardware clock dead"
	message. This will most likely only be seen on the newer
	(180 Mhz and up PA8000) processors. This panic will
	usually occur just after a beep.

	(PHKL_9580)
	A direct audio application (an application that does not
	use the Audio server, e.g. a common freeware unix
	application called rplay) can panic the system.

Defect Description:
	PHKL_17558:
	Port of 10.20 PHKL_11578

	(PHKL_11578)
	A hardware design change opened up a timing dependency in
	the audio driver that was not exposed until the newer
	PA8000 processors were made available. The problem occurs
	when switching sampling rates. The problem usually occurs
	after a "beep" since the driver changes sampling rates to
	do the beep, and then switches back.

	(PHKL_9580)
	One way of reproducing the problem is to run a common
	freeware unix application called rplay. Any application
	that calls the AUDIO_GET_STATUS ioctl of the audio
	driver before allocating a transmit buffer will cause
	the system to panic. This problem will not occur on
	a 705,710 or 74x series machine. Any machine with CD
	quality audio hardware will exhibit the problem.

	Resolution:
	Port of 10.20 PHKL_11578

SR:
	0000000000

Patch Files:
	/usr/conf/lib/libhp-ux.a(audio.o)

what(1) Output:
	/usr/conf/lib/libhp-ux.a(audio.o):
		99/02/09 kern/wsio/audio.c, hpux, hpux_10.26, ic5at
			Revision 1.3 PATCH_10.26 (PHKL_17558)
		audio.c $Date: 97/06/30 00:58:27 $ $Revision: 1.7.98
			.4 $ PATCH_10.20 (PHKL_11578)

cksum(1) Output:
	4143093992 45504 /usr/conf/lib/libhp-ux.a(audio.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies:
	all machines except 9000/705,710,74x with audio hw

Supersedes: None

Equivalent Patches:
	PHKL_17559:
	s800: 10.26

Patch Package Size: 100 KBytes

Installation Instructions:
	Please review all instructions and the Hewlett-Packard
	SupportLine User Guide or your Hewlett-Packard support terms
	and conditions for precautions, scope of license,
	restrictions, and, limitation of liability and warranties,
	before installing this patch.
	------------------------------------------------------------
	1. Back up your system before installing a patch.

	2. Login as root.

	3. Copy the patch to the /tmp directory.

	4. Move to the /tmp directory and unshar the patch:

		cd /tmp
		sh PHKL_17558

	5a. For a standalone system, run swinstall to install the
	    patch:

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHKL_17558.depot

	5b. For a homogeneous NFS Diskless cluster run swcluster on the
	    server to install the patch on the server and the clients:

		swcluster -i -b

	    This will invoke swcluster in the interactive mode and
	    force all clients to be shut down.

	    WARNING: All cluster clients must be shut down prior to the
		     patch installation.  Installing the patch while the
		     clients are booted is unsupported and can lead to
		     serious problems.

	    The swcluster command will invoke an swinstall session in which
	    you must specify:

		alternate root path  -  default is /export/shared_root/OS_700
		source depot path    -  /tmp/PHKL_17558.depot

	    To complete the installation, select the patch by choosing
	    "Actions -> Match What Target Has" and then "Actions -> Install"
	    from the Menubar.

	5c. For a heterogeneous NFS Diskless cluster:

		- run swinstall on the server as in step 5a to install
		  the patch on the cluster server.

		- run swcluster on the server as in step 5b to install
		  the patch on the cluster clients.

	By default swinstall will archive the original software in
	/var/adm/sw/patch/PHKL_17558.  If you do not wish to retain a
	copy of the original software, you can create an empty file
	named /var/adm/sw/patch/PATCH_NOSAVE.

	Warning: If this file exists when a patch is installed, the
	         patch cannot be deinstalled.  Please be careful
		 when using this feature.

	It is recommended that you move the PHKL_17558.text file to
	/var/adm/sw/patch for future reference.

	To put this patch on a magnetic tape and install from the
	tape drive, use the command:

		dd if=/tmp/PHKL_17558.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None