问题背景

单板类型：NA；
软件版本：openUBMC 25.06；
涉及功能：bios版本号显示；
触发条件：bios上报的版本号为不可见字符。
业务表现：预期bios版本号正常显示；实际读取BIOS版本号为空。

问题复现步骤

升级25.06版本，读取BIOS版本号为空。

关键日志信息

查看日志，确认报错如下：

text

11858:2025-09-10 15:44:15.113339 bios NOTICE: bios_service.lua(1296): [bios] system 1 read file(42) success 
11861:2025-09-10 15:44:18.124674 bios NOTICE: bios_service.lua(432): set bios version to successfully, system is 1 
11862:2025-09-10 15:44:18.169435 bios NOTICE: upgrade_service.lua(863): [bios]clear system 1 slave upgrade flag

定位过程

查看资源树

text

~ ~ # busctl --user tree bmc.kepler.bios
└─/bmc
  └─/bmc/kepler
    ├─/bmc/kepler/IpmiCmds
    │ ├─/bmc/kepler/IpmiCmds/00
    │ │ ├─/bmc/kepler/IpmiCmds/00/08
    │ │ │ ├─/bmc/kepler/IpmiCmds/00/08/SetBootOption
    │ │ │ ├─/bmc/kepler/IpmiCmds/00/08/SetBootOptionPowerOnDelay0
    │ │ │ └─/bmc/kepler/IpmiCmds/00/08/SetBootOptionPowerOnDelay1
    │ │ └─/bmc/kepler/IpmiCmds/00/09
    │ │   ├─/bmc/kepler/IpmiCmds/00/09/GetBootOption
    │ │   ├─/bmc/kepler/IpmiCmds/00/09/GetBootOptionPowerOnDelay0
    │ │   └─/bmc/kepler/IpmiCmds/00/09/GetBootOptionPowerOnDelay1
    │ ├─/bmc/kepler/IpmiCmds/06
    │ │ ├─/bmc/kepler/IpmiCmds/06/58
    │ │ │ ├─/bmc/kepler/IpmiCmds/06/58/SetBridgeSystemInfo
    │ │ │ ├─/bmc/kepler/IpmiCmds/06/58/SetChannelInfo
    │ │ │ ├─/bmc/kepler/IpmiCmds/06/58/SetDeviceSystemInfo
    │ │ │ ├─/bmc/kepler/IpmiCmds/06/58/SetOperatingSystemName
    │ │ │ ├─/bmc/kepler/IpmiCmds/06/58/SetPrimaryOperatingSystemName
    │ │ │ ├─/bmc/kepler/IpmiCmds/06/58/SetProgressSystemInfo
    │ │ │ ├─/bmc/kepler/IpmiCmds/06/58/SetSystemFirmwareVersion
    │ │ │ ├─/bmc/kepler/IpmiCmds/06/58/SetSystemName
    │ │ │ ├─/bmc/kepler/IpmiCmds/06/58/WriteOcpCardBdfToBmc
    │ │ │ ├─/bmc/kepler/IpmiCmds/06/58/WritePcieCardBdfToBmc
    │ │ │ └─/bmc/kepler/IpmiCmds/06/58/WritePcieDiskBdfToBmc
    │ │ └─/bmc/kepler/IpmiCmds/06/59
    │ │   ├─/bmc/kepler/IpmiCmds/06/59/GetBridgeSystemInfo
    │ │   ├─/bmc/kepler/IpmiCmds/06/59/GetChannelInfo
    │ │   ├─/bmc/kepler/IpmiCmds/06/59/GetDeviceSystemInfo
    │ │   ├─/bmc/kepler/IpmiCmds/06/59/GetOperatingSystemName
    │ │   ├─/bmc/kepler/IpmiCmds/06/59/GetPrimaryOperatingSystemName
    │ │   ├─/bmc/kepler/IpmiCmds/06/59/GetProgressSystemInfo
    │ │   ├─/bmc/kepler/IpmiCmds/06/59/GetSystemFirmwareVersion
    │ │   └─/bmc/kepler/IpmiCmds/06/59/GetSystemName
    │ └─/bmc/kepler/IpmiCmds/30
    │   ├─/bmc/kepler/IpmiCmds/30/90
    │   │ ├─/bmc/kepler/IpmiCmds/30/90/GetAllowedPackageType
    │   │ ├─/bmc/kepler/IpmiCmds/30/90/GetBiosGoldValid
    │   │ └─/bmc/kepler/IpmiCmds/30/90/SetAllowedPackageType
    │   ├─/bmc/kepler/IpmiCmds/30/92
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/AddBiosLogEntry
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/GetBiosBootInfo
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/GetCachedBiosUpgradeMode
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/GetFileChanged
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/GetSmBiosInfo
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/ReadFileFromBmc
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/ReportAlarm
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/ReportVRStatus
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/SetBaseOSBootEvent
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/SetBiosBootInfo
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/SetBiosVersion
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/SetCachedBiosUpgradeMode
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/SetCertificateAssertion
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/SetCertificateDeassertion
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/SetFileChanged
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/SetKbcStatus
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/SetSmBiosInfo
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/SetTeeOSVersion
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/SetVedioStatus
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/UpdateBiosPassword
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/UpdateBiosStatus
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/UpdatePostStatus
    │   │ ├─/bmc/kepler/IpmiCmds/30/92/WriteFileToBmc
    │   │ └─/bmc/kepler/IpmiCmds/30/92/WriteSmbiosData
    │   └─/bmc/kepler/IpmiCmds/30/93
    │     └─/bmc/kepler/IpmiCmds/30/93/SetBiosConfigItem
    ├─/bmc/kepler/Systems
    │ └─/bmc/kepler/Systems/1
    │   ├─/bmc/kepler/Systems/1/Bios
    │   ├─/bmc/kepler/Systems/1/BiosUpgradeService
    │   ├─/bmc/kepler/Systems/1/BootOptions
    │   ├─/bmc/kepler/Systems/1/SecureBootOptions
    │   └─/bmc/kepler/Systems/1/SmBios
    └─/bmc/kepler/bios
      └─/bmc/kepler/bios/MicroComponent

bios版本号依赖bios上报，从日志看来，bios有上报版本号，但上报的版本号为不可见字符。

text

11858:2025-09-10 15:44:15.113339 bios NOTICE: bios_service.lua(1296): [bios] system 1 read file(42) success 
11861:2025-09-10 15:44:18.124674 bios NOTICE: bios_service.lua(432): set bios version to successfully, system is 1 
11862:2025-09-10 15:44:18.169435 bios NOTICE: upgrade_service.lua(863): [bios]clear system 1 slave upgrade flag

问题原因

bios有上报版本号，但上报的版本号为不可见字符。

解决方案

升级BIOS就可以了。

问题背景 ​

问题复现步骤 ​

关键日志信息 ​

定位过程 ​

问题原因 ​

解决方案 ​

问题背景

问题复现步骤

关键日志信息

定位过程

问题原因

解决方案