Power8 System Firmware

New features and functions

• Support was added for improved security for the service processor password policy.  For the service processor, the "admin", "hmc" and "general" password must be set on first use for newly manufactured systems and after a factory reset of the system.  The IPMI interface has been changed to be disabled by default in these scenarios.  The REST/Redfish interface will return an error saying the user account is expired.  This policy change helps to enforce the service processor is not left in a state with a well-known password.  The user can change from an expired default password to a new password using the Advanced System Management Interface (ASMI).
• Support was added for real-time data capture for PCIe3 expansion drawer (#EMX0) cable card connection data via resource dump selector on the HMC or in ASMI on the service processor.  Using the resource selector string of "xmfr -dumpccdata" will non-disruptively generate an RSCDUMP type of dump file that has the current cable card data, including data from cables and the retimers.
  

System firmware changes that affect all systems

• A problem was fixed for an intermittent IPMI core dump on the service processor.  This occurs only rarely when multiple IPMI sessions are starting and cleaning up at the same time.  A new IPMI session can fail initialization when one of its session objects is cleaned up.  The circumvention is to retry the IPMI command that failed.
• On systems using PowerVM firmware, a problem was fixed for SR-IOV adapters to provide a consistent Informational message level for cable plugging issues.  For transceivers not plugged on certain SR-IOV adapters, an unrecoverable error (UE) SRC B400FF03 was changed to an Informational message logged.  This affects the SR-IOV adapters with the following feature codes and CCINs: #EC2R/EC2S with CCIN 58FA; #EC2T/EC2U with CCIN 58FB; and #EC3L/EC3M with CCIN 2CEC.
  For copper cables unplugged on certain SR-IOV adapters, a missing message was replaced with an Informational message logged.  This affects the SR-IOV adapters with the following feature codes and CCINs:  #EN17/EN18 with CCIN 2CE4; #EN0K/EN0L with CCIN 2CC1; and #EL57/EL3C with CCIN 2CC1.
• On systems with PowerVM firmware, the following problem related to SR-IOV was fixed:  If the SR-IOV logical port's VLAN ID (PVID) is modified while the logical port is configured, the adapter will use an incorrect PVID for the Virtual Function (VF).  This problem is rare because most users do not change the PVID once the logical port is configured, so they will not have the problem.
  This fix updates adapter firmware to 10.2.252.1940 for the following Feature Codes and CCINs: #EN15/EN16 with CCIN 2CE3; #EN17/EN18 with CCIN 2CE4; #EN0H/EN0J with CCIN 2B93; #EN0M/EN0N with CCIN 2CC0; #EN0K/EN0L with CCIN 2CC1; #EL56/EL38 with CCIN 2B93; and #EL57/EL3C with CCIN 2CC1.
  The SR-IOV adapter firmware level update for the shared-mode adapters happens under user control to prevent unexpected temporary outages on the adapters.  A system reboot will update all SR-IOV shared-mode adapters with the new firmware level.  In addition, when an adapter is first set to SR-IOV shared mode, the adapter firmware is updated to the latest level available with the system firmware (and it is also updated automatically during maintenance operations, such as when the adapter is stopped or replaced).  And lastly, selective manual updates of the SR-IOV adapters can be performed using the Hardware Management Console (HMC).  To selectively update the adapter firmware, follow the steps given at the IBM Knowledge Center for using HMC to make the updates:   https://www.ibm.com/support/knowledgecenter/HW4M4/p8efd/p8efd_updating_sriov_firmware.htm.
  Note: Adapters that are capable of running in SR-IOV mode, but are currently running in dedicated mode and assigned to a partition, can be updated concurrently either by the OS that owns the adapter or the managing HMC (if OS is AIX or VIOS and RMC is running).
  
• A problem was fixed for unknowingly running at lower (the default) frequencies when changing into Fixed Max Frequency (FMF) mode.  This problem should be unlikely to happen because it requires that the system already is in FMF mode, and then the user requesting a change into FMF mode.  This request is not handled correctly as the tunable parameters get reset to default which allows the processor frequency to be reduced to the minimum value.  The recovery for this problem is to change the power mode to "Nominal" and then change it to FMF.
• A problem was fixed for Novalink failing to activate partitions that have names with character lengths near the maximum allowed character length.  This problem can be circumvented by changing the partition name to have 32 characters or less.
• A problem was fixed where a Linux or AIX partition type was incorrectly reported as unknown.  Symptoms include: IBM Cloud Management Console (CMC) not being able to determine the RPA partition type (Linux/AIX) for partitions that are not active; and HMC attempts to dynamically add CPU to Linux partitions may fail with a HSCL1528 error message stating that there are not enough Integrated Facility for Linux ( IFL) cores for the operation.
  
• A problem was fixed for a possible system crash with SRC B7000103 if the HMC session is closed while the performance monitor is active.  As a circumvention for this problem, make sure the performance monitor is turned off before closing the HMC sessions.
• A problem was fixed for a Live Partition Mobility (LPM) migration of a large memory partition to a target system that causes the target system to crash and for the HMC to go to the "Incomplete" state.  For servers with the default LMB size (256MB), if a partition is >=16TB and if desired memory is different than the maximum memory, LPM may fail on the target system.  Servers with LMB sizes less than the default could hit this problem with smaller memory partition sizes.  A circumvention to the problem is to set the desired and maximum memory to the same value for the large memory partition that is to be migrated.
• A problem was fixed for system hangs or incomplete states displayed by HMC(s) caused by a loop in the handling of Segment Lookaside Buffer (SLB) cache memory parity errors where SRC B7005442 may be logged.  This problem has a low frequency of occurrence as it requires severe errors in the SLB cache that are not cleared by an error flush of the entries.  A re-IPL of the system can be used to recover from this error.
  

System firmware changes that affect certain systems

• On systems with an IBM i partition, a problem was fixed for a D-mode IPL failure when using a USB DVD drive in an IBM 7226 multimedia storage enclosure.  Error logs with SRC BA16010E, B2003110, and/or B200308C can occur.  As a circumvention, an external DVD drive can be used for the D-mode IPL.
• On systems with IBM i partitions, a rare problem was fixed for an intermittent failure of a DLPAR remove of an adapter.  In most cases, a retry of the operation will be successful.
  

System firmware changes that affect all systems

• HIPER/Pervasive:  On systems with PowerVM firmware , the following problems related to SR-IOV were fixed:
  1) A problem was fixed for new or replacement SR-IOV adapters with feature codes EN15 and EN17 being rendered non-functional when moved to SR-IOV mode. This includes cards moved from dedicated device mode, newly installed adapters, and FRU replacements. This problem occurs when the adapter firmware is updated to the 10.2.252.x levels from 11.x adapter firmware levels.
  2) A problem was fixed for certain SR-IOV adapters where SRC B400FF01 errors are seen during vNIC failovers and Live Partition Mobility (LPM) migration of vNIC clients.This may also result in errors seen in partitions (for example, some partitions may show LNC2ENT_TX_ERR).
  3) A problem was fixed where network multicast traffic is not received by a SR-IOV logical port (VF) network interface for a Linux partition. The failure can occur when the partition transitions the network interface out of promiscuous or multicast promiscuous mode.
  These fixes update adapter firmware to 10.2.252.1939  for the following Feature Codes:   EN15, EN17, EN0H, EN0J, EN0M, EN0N, EN0K, EN0L, EL38, EL3C, EL56, and EL57.
  The SR-IOV adapter firmware level update for the shared-mode adapters happens under user control to prevent unexpected temporary outages on the adapters.  A system reboot will update all SR-IOV shared-mode adapters with the new firmware level.  In addition, when an adapter is first set to SR-IOV shared mode, the adapter firmware is updated to the latest level available with the system firmware (and it is also updated automatically during maintenance operations, such as when the adapter is stopped or replaced).  And lastly, selective manual updates of the SR-IOV adapters can be performed using the Hardware Management Console (HMC).  To selectively update the adapter firmware, follow the steps given at the IBM Knowledge Center for using HMC to make the updates:   https://www.ibm.com/support/knowledgecenter/HW4M4/p8efd/p8efd_updating_sriov_firmware.htm.
  Note: Adapters that are capable of running in SR-IOV mode, but are currently running in dedicated mode and assigned to a partition, can be updated concurrently either by the OS that owns the adapter or the managing HMC (if OS is AIX or VIOS and RMC is running).
  
• DEFERRED: PARTITION_DEFERRED:  On systems with PowerVM firmware, a problem was fixed for repeated CPU DLPAR remove operations by Linux (Ubuntu, SUSE, or RHEL) OSes possibly resulting in a partition crash.  No specific SRCs or error logs are reported.   The problem can occur on any DLPAR CPU remove operation if running on Linux.  The occurrence is intermittent and rare.  The partition crash may result in one or more of the following console messages (in no particular order):
   1) Bad kernel stack pointer addr1 at addr2
   2) Oops: Bad kernel stack pointer
   3) ******* RTAS CALL BUFFER CORRUPTION *******
   4)  ERROR: Token not supported
  This fix does not activate until there is a reboot of the partition.
• A problem was fixed for a PCIe Hub checkstop with SRC B138E504 logged that fails to guard the errant processor chip.  With the fix, the problem hardware FRU is guarded so there is not a recurrence of the error on the next IPL.
• A problem was fixed for an incorrect SRC of B1810000 being logged when a firmware update fails because of Entitlement Key expiration.  The error displayed on the HMC and in the OS is correct and meaningful.  With the fix, for this firmware update failure the correct SRC of B181309D is now logged.
• A problem was fixed for informational logs flooding the error log if a "Get Sensor Reading" is not working.
  
• A problem was fixed for a Redfish (REST) Patch request for PowerSaveMode with an unsupported mode value returning an error code "500" instead of the correct error code of "400".
  
• On systems with PowerVM firmware,  a problem was fixed for a rare Live Partition Mobility migration hang with the partition left in VPM (Virtual Page Mode) which causes performance concerns.  This error is triggered by a migration failover operation occurring during the migration state of "Suspended" and there has to be insufficient VASI buffers available to clear all partition state data waiting to be sent to the migration target.  Migration failovers are rare and the migration state of "Suspended" is a migration state lasting only a few seconds for most partitions, so this problem should not be frequent.  On the HMC, there will be an inability to complete either a migration stop or a recovery operation.  The HMC will show the partition as migrating and any attempt to change that will fail.  The system must be re-IPLed to recover from the problem.
• A problem was fixed for an IPMI core dump and SRC B1818601 logged intermittently when an IPMI session is closed.  A flood of B1818A03 SRCs may be logged after the error occurs.  The IPMI server is not impacted and a call home is reported for the problem.  There is no service outage for the IPMI users because of this.
• A problem was fixed for IPMI sessions in the service processor causing a flood of B181A803 informational error logs on registry read fails for IPv6 and IPv4 keywords.  These error logs do not represent a real problem and may be ignored.
• On systems with the PowerVM firmware,  a problem was fixed for shared processor partitions going unresponsive after changing the processor sharing mode of a dedicated processor partition from "allow when partition is active" to either "allow when partition is inactive" or "never".  This problem can be circumvented by avoiding disabling processor sharing when active on a dedicated processor partition.  To recover if the issue has been encountered, enable "processor sharing when active" on the dedicated partition.
• On systems with PowerVM firmware, a problem was fixed for an error in deleting a partition with the virtualized Trusted Platform Module (vTPM) enabled and SRC B7000602 logged.  When this error occurs, the encryption process in the hypervisor may become unusable.  The problem can be recovered from with a re-IPL of the system.
• On systems with PowerVM firmware, a problem was fixed in Live Partition Mobility (LPM) of a partition to a shared processor pool, which results in the partition being unable to consume uncapped cycles on the target system.  To prevent the issue from occurring, partitions can be migrated to the default shared processor pool and then dynamically moved to the desired shared processor pool.  To recover from the issue,  do one of the following four steps: 
  1) Either use DLPAR to add or remove a virtual processor to/from the affected partition;
  2) or dynamically move the partition between shared processor pools;
  3) or reboot the partition;
  4) or re-IPL the system.
  
• On systems with PowerVM firmware,  a problem was fixed for a boot failure using a N_PORT ID Virtualization (NPIV) LUN for an operating system that is installed on a disk of 2 TB or greater, and having a device driver for the disk that adheres to a non-zero allocation length requirement for the "READ CAPACITY 16".  The IBM partition firmware had always used an invalid zero allocation length for the return of data and that had been accepted by previous device drivers.  Now some of the newer device drivers are adhering to the specification and needing an allocation length of non-zero to allow the boot to proceed.
• On systems with PowerVM firmware, a problem was fixed for failing to boot from an AIX mksysb backup on a USB RDX drive with SRCs logged of BA210012, AA06000D, and BA090010.  The problem trigger is a boot attempt from the RDX device. The boot error does not occur if a serial console is used to navigate the SMS menus.
  
• On systems with PowerVM firmware,  a problem was fixed for a system IPLing with an invalid time set on the service processor that causes partitions to be reset to the Epoch date of 01/01/1970.  With the fix, on the IPL, the hypervisor logs a B700120x when the service processor real time clock is found to be invalid and halts the IPL to allow the time and date to be corrected by the user.  The Advanced System Management Interface (ASMI) can be used to correct the time and date on the service processor.  On the next IPL, if the time and date have not been corrected, the hypervisor will log a SRC B7001224 (indicating the user was warned on the last IPL) but allow the partitions to start, but the time and date will be set to the Epoch value.
• A security problem was fixed in the service processor Network Security Services (NSS) services which, with a man-in-the-middle attack, could provide false completion or errant network transactions or exposure of sensitive data from intercepted SSL connections to ASMI, Redfish, or the service processor message server.  The Common Vulnerabilities and Exposures issue number is CVE-2018-12384.
• On systems with PowerVM firmware, a problem was fixed for hypervisor task getting deadlocked if partitions are powered on at the same time that SR-IOV is being configured for an adapter.  With this problem, workloads will continue to run but it will not be possible to change the virtualization configuration or power partitions on and off.  This error can be recovered by doing a re-IPL of the system.
• On systems with PowerVM firmware,  a problem was fixed for hypervisor tasks getting deadlocked that cause the hypervisor to be unresponsive to the HMC ( this shows as an incomplete state on the HMC) with SRC B200F011 logged.  This is a rare timing error.  With this problem,  OS workloads will continue to run but it will not be possible for the HMC to interact with the partitions.  This error can be recovered by doing a re-IPL of the system with a scheduled outage.
• A problem was fixed for false indication of a real time clock (RTC) battery failure with SRC B15A3305 logged.  This error happens infrequently.  If the error occurs, and another battery failure SRC is not logged within 24 hours, ignore the error as it was caused by a timing issue in the battery test.
• A problem was fixed for an IPMI core dump and SRC B181720D logged, causing the service processor to reset due to a low memory condition.  The memory loss is triggered by frequently using the ipmitool to read the network configuration.  The service processor recovers from this error but if three of these errors occur within a 15 minute time span, the service processor will go to a failed hung state with SRC B1817212 logged.  Should a service processor hang occur, OS workloads will continue to run but it will not be possible for the HMC to interact with the partitions.  This service processor hung state can be recovered by doing a re-IPL of the system with a scheduled outage.
  

System firmware changes that affect certain systems

• DEFERRED:  On systems with a PCIe3 I/O expansion drawer (#EMX0) , a problem was fixed for the PCIe3 I/O expansion drawer links to improve stability.   Intermittent training failures on the links occurred during the IPL with SRC B7006A8B logged.  With the fix, the link settings were changed to lower the peak link signal amplification to bring the signal level into the middle of the operating range, thus improving the high margin to reduce link training failures.  The system must be re-IPLed for the fix to activate.
  
• On a system witn an IBM i partition, a problem was fixed for a DLPAR force-remove of a physical IO adapter from an IBM i partition and a simultaneous power off of the partition causing the partition to hang during the power off.  To recover the partition from the error, the system must be re-IPLed.  This problem is rare because there is only a 2-second timing window for the DLPAR and power off to interfere with each other.
• On a system with an active IBM i partition, a problem was fixed for a SPCN firmware download to the PCIe3 I/O expansion drawer (feature #EMX0) Chassis Management Card (CMC) that could possibly get stuck in a pending state.  This failure is very unlikely as it would require a concurrent replacement of the CMC card that is loaded with a SPCN level that is older than 2015 (01MEX151012a).  The failure with the SPCN download can be corrected by a re-IPL of the system.
• On a system with an AMS (Active Memory Sharing) partition, a problem was fixed for a Live Partition Mobility (LPM) migration failure when migrating from P9 to a pre-FW860 P8 or P7 system.  This failure can occur if the P9 partition is in dedicated memory mode, and the Physical Page Table (PPT) ratio is explicitly set on the HMC (rather than keeping the default value) and the partition is then transitioned to AMS mode prior to the migration to the older system.  This problem can be avoided by using dedicated memory in the partition being migrated back to the older system.
• On systems with PowerVM firmware and a vNIC configuration with multiple backing Virtual Functions (VFs), a problem was fixed for a backing VF failure after a sequence of repeated failovers where one of the VF backing devices goes to a powered off state.  This problem is infrequent and only occurs after many vNIC failovers.  A reboot of the partition with the affected VF will recover it.
• On systems with PCIe3 expansion drawers (feature code #EMX0),  a problem was fixed for a UE B700BA01 logged after a FRU was replaced in the PCIe Expansion drawer.  The log should have been informational instead of unrecoverable because it is normal to have this log for a replaced part in the expansion drawer that has a different serial number from the old part.  If a part in the expansion drawer has been replaced, the UE error log can be ignored.
• On systems with IBMi partitions,  a problem was fixed for Live Partition Mobility (LPM) migrations that could have incorrect hardware resource information (related to VPD) in the target partition if a failover had occurred for the source partition during the migration.  This failover would have to occur during the Suspended state of the migration, which only lasts about a second, so this should be rare.  With the fix, at a minimum the migration error will be detected to abort the migration so it can be restarted.  And at a later IBMi OS level, the fix will allow the migration to complete even though the failover has occurred during the Suspended state of the migration.
  
• On systems with PCIe3 expansion drawers (feature #EMX0), a problem was fixed for PCI link recovery failure during a PCI Host Bridge (PHB) reset with SRCs of B7006A80, B7006A22, B7006A8B, and B7006970 logged.  This causes the cable card to fail, losing all slots in the expansion drawer.  This is a rare problem.  If this error occurs, a concurrent maintenance operation could reboot the expansion drawer or a re-IPL of the system could be done to recover the drawer.
• On systems with an IBM i partition with greater than 9999 GB installed, a problem was fixed for on/Off COD memory-related amounts not being displayed correctly.  This only happens when retrieving the On/Off COD numbers via a particular IBMi MATMATR MI command option value.
• On systems with PCIe3 expansion drawers(feature code #EMX0),  a problem was fixed for a concurrent exchange of a PCIe expansion drawer cable card, although successful, leaves the fault LED turned on.
• On systems using PowerVM firmware, a problem was fixed for shared processor pools where uncapped shared processor partitions placed in a pool may not be able to consume all available processor cycles.  The problem may occur when the sum of the allocated processing units for the pool member partitions equals the maximum processing units of the pool.
  

System firmware changes that affect all systems

• A security problem was fixed in the Dynamic Host Control Protocol (DHCP) client on the service processor for an out-of-bound memory access flaw that could be used by a malicious DHCP server to crash the DHCP client process.  The Common Vulnerabilities and Exposures issue number is CVE-2018-5732.
• A security problem was fixed to detect and prevent Self Boot Engine (SBE) SEEPROM corruption.   The Common Vulnerabilities and Exposures issue number is CVE-2018-8931.

Response for Recent Security Vulnerabilities

• DISRUPTIVE:  On systems with PowerVM firmware,  In response to recently reported security vulnerabilities, this firmware update is being released to address Common Vulnerabilities and Exposures issue number CVE-2018-3639.  In addition, Operating System updates are required in conjunction with this FW level for CVE-2018-3639.
  

System firmware changes that affect certain systems

• DEFERRED: On systems with PowerVM firmware, a problem was fixed for a PCIe3 I/O expansion drawer (with feature code #EMX0) where control path stability issues may cause certain SRCs to be logged.  Systems using copper cables may log SRC B7006A87 or similar SRCs, and the fanout module may fail to become active.  Systems using optical cables may log SRC of B7006A22 or similar SRCs.  For this problem, the errant I/O drawer may be recovered by a re-IPL of the system.
  

New features and functions

• In response to recently reported security vulnerabilities, this firmware update is being released to address Common Vulnerabilities and Exposures issue numbers CVE-2017-5715, CVE-2017-5753 and CVE-2017-5754.  Operating System updates are required in conjunction with this FW level for CVE-2017-5753 and CVE-2017-5754.
  

System firmware changes that affect certain systems

• DEFERRED:  On systems using PowerVM firmware, a problem was fixed for DPO (Dynamic Platform Optimizer) operations taking a very long and impacting the server system with a performance degradation.  The problem is triggered by a DPO operation being done on a system with unlicensed processor cores and a very high I/O load.  The fix involves using a different lock type for the memory relocation activities (to prevent lock contention between memory relocation threads and partition threads) that is created at IPL time, so an IPL is needed to activate the fix.  More information on the DPO function can be found at the IBM Knowledge Center:  https://www.ibm.com/support/knowledgecenter/en/8247-42L/p8hat/p8hat_dpoovw.htm

System firmware changes that affect certain systems

• DEFERRED: On systems using PowerVM firmware, a problem was fixed for PCIe3 I/O expansion drawer (#EMX0) link improved stability.  The settings for the continuous time linear equalizers (CTLE) was updated for all the PCIe adapters for the PCIe links to the expansion drawer.  The system must be re-IPLed for the fix to activate.

System firmware changes that affect certain systems

• DEFERRED: A problem was fixed for a Field Core Override (FCO) error that causes a processor chip without functional cores to be guarded with a SRC B111BA24 error logged and by guard association causes all the memory and I/O resources behind the processor chip to be lost for the current IPL.  This problem is triggered by a system being manufactured with one or more feature codes of #2319 (Factory Deconfiguration of 1-core) to assist with optimization of software licensing.  For more information on Field Core Override, refer to IBM Knowledge Center: http://www.ibm.com/support/knowledgecenter/POWER8/p8hby/fieldcore.htm.  The error only occurs in systems where the total number of active cores is less than the number of processor chips.  When the fix is applied on a system that has lost memory or I/O resources due to the errant processor guard, the system must be re-IPLed with the guard removed from the processor to recover the resources.
  Without the fix, the problem may be circumvented by the following four steps:
  1) Power off the system.
  2) Use the Field Core Override function to increase the number of active processor cores in the system.  The Advanced System Management Interface (ASMI) "System Configuration -> Hardware Deconfiguration -> Field Core Override" panel shows the number of cores that are active in the system and it can be used to increase the number of active processor cores in the system.
  3) Unguard the failed processor.  Use the ASMI "System Configuration -> Hardware Deconfiguration -> Clear All Deconfiguration Errors" panel to restore the guarded processor. 
  4) IPL with the increased number of active processor cores and the unguarded processor.
  This problem does not pertain to the IBM Power System E850 (8408-44E) model.
  

System firmware changes that affect certain systems

• DISRUPTIVE:  On systems using the PowerVM firmware, a problem was fixed for an "Incomplete" state caused by initiating a resource dump with selector macros from NovaLink (vio -dump -lp 1 -fr).   The failure causes a communication process stack frame, HVHMCCMDRTRTASK, size to be exceeded with a hypervisor page fault that disrupts the NovalLink and/or HMC communications. The recovery action is to re-IPL the CEC but that will need to be done without the assistance of the management console.  For each partition that has a OS running on the system, shut down each partition from the OS.  Then from the Advanced System Management Interface (ASMI),  power off the managed system.  Alternatively, the system power button may also be used to do the power off.  If the management console Incomplete state persists after the power off, the managed system should be rebuilt from the management console.  For more information on management console recovery steps, refer to this IBM Knowledge Center link: https://www.ibm.com/support/knowledgecenter/en/POWER7/p7eav/aremanagedsystemstate_incomplete.htm.  The fix is disruptive because the size of the PowerVM hypervisor must be increased to accommodate the over-sized stack frame of the failing task.
• DEFERRED:  On systems using the PowerVM firmware, a problem was fixed for a CAPI function unavailable condition on a system with the maximum number of CAPI adapters and partitions.  Not enough bytes were allocated for CAPI for the maximum configuration case.  The problem may be circumvented by reducing the number of active partitions or CAPI adapters.   The fix is deferred because the size of the hypervisor must be increased to provide the additional CAPI space.
• DEFERRED:   On systems using PowerVM firmware, a problem was fixed for cable card capable PCI slots that fail during the IPL.  Hypervisor I/O Bus Interface UE B7006A84 is reported for each cable card capable PCI slot that doesn't contain a PCIe3 Optical Cable Adapter for the PCIe Expansion Drawer (feature code #EJ05).  PCI slots containing a cable card will not report an error but will not be functional.  The problem can be resolved by performing an AC cycle of the system.  The trigger for the failure is the I2C devices used to detect the cable cards are not coming out of the power on reset process in the correct state due to a race condition.