Why does my Intel Wireless AC 9560 or 9462 card not have an interface on the system on RHEL8.1?

Solution In Progress - Updated -

Issue

  • Unable to load iwlwifi module
  • Unable to see wireless interface
  • The following errors appear in journalctl:

    localhost.localdomain kernel: iwlwifi 0000:00:14.3: loaded firmware version 46.3cfab8da.0 op_mode iwlmvm
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: Detected Intel(R) Dual Band Wireless AC 9560, REV=0x354
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: Failed to load firmware chunk!
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: iwlwifi transaction failed, dumping registers
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: iwlwifi device config registers:
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 00000000: 02f08086 00100406 02800000 00800010 24104004 00000060 00000000 00000000
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 00000020: 00000000 00000000 00000000 00348086 00000000 000000c8 00000000 000001ff
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: iwlwifi device memory mapped registers:
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 00000000: 18489004 00000040 00000000 00000000 00000000 00000000 00000000 00000000
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 00000020: 00000011 0c040005 00000351 d55555d5 d55555d5 d55555d5 80008040 001f0040
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: Could not load the [0] uCode section
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: Failed to start INIT ucode: -110
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: Collecting data: trigger 16 fired.
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: Not valid error log pointer 0x00000000 for Init uCode
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: Fseq Registers:
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 0xA5A5A5A2 | FSEQ_ERROR_CODE
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 0xA5A5A5A2 | FSEQ_TOP_INIT_VERSION
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 0xA5A5A5A2 | FSEQ_CNVIO_INIT_VERSION
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 0xA5A5A5A2 | FSEQ_OTP_VERSION
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 0xA5A5A5A2 | FSEQ_TOP_CONTENT_VERSION
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 0xA5A5A5A2 | FSEQ_ALIVE_TOKEN
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 0xA5A5A5A2 | FSEQ_CNVI_ID
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 0xA5A5A5A2 | FSEQ_CNVR_ID
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 0xA5A5A5A2 | CNVI_AUX_MISC_CHIP
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 0xA5A5A5A2 | CNVR_AUX_MISC_CHIP
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 0xA5A5A5A2 | CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: 0xA5A5A5A2 | CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: Firmware not running - cannot dump error
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: Failing on timeout while stopping DMA channel 8 [0xa5a5a5a2]
    localhost.localdomain kernel: iwlwifi 0000:00:14.3: Failed to run INIT ucode: -110
    

Environment

  • Red Hat Enterprise Linux 8.1
  • Intel Wireless 9560 or 9462
  • (The issue does not happen on Red Hat Enterprise Linux 7.8)

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