With kernel changes in bug 1833065, Intel 9462/9560 cards should be working well with -46 rev firmware blobs. However, with that latest upstreamed -48 rev, iwlwifi cease to function as expected and error messages in regarding to GEO_TX_POWER_LIMIT can be found in kernel dmesg:

kernel: [    3.223967] iwlwifi 0000:00:14.3: enabling device (0000 -> 0002)
kernel: [    3.225705] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-QuZ-a0-jf-b0-50.ucode failed with error -2
kernel: [    3.225715] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-QuZ-a0-jf-b0-49.ucode failed with error -2
kernel: [    3.227088] iwlwifi 0000:00:14.3: Found debug destination: EXTERNAL_DRAM
kernel: [    3.227090] iwlwifi 0000:00:14.3: Found debug configuration: 0
kernel: [    3.227885] iwlwifi 0000:00:14.3: loaded firmware version 48.13675109.0 op_mode iwlmvm
kernel: [    3.296241] iwlwifi 0000:00:14.3: Detected Intel(R) Dual Band Wireless AC 9462, REV=0x354
kernel: [    3.302726] iwlwifi 0000:00:14.3: Applying debug destination EXTERNAL_DRAM
kernel: [    3.302876] iwlwifi 0000:00:14.3: Allocated 0x00400000 bytes for firmware monitor.
kernel: [    3.434283] iwlwifi 0000:00:14.3: base HW address: 98:2c:bc:39:5f:d0
kernel: [    3.452447] iwlwifi 0000:00:14.3 wlp0s20f3: renamed from wlan0
NetworkManager[1041]: <info>  [1561104168.1367] rfkill0: found WiFi radio killswitch (at /sys/devices/pci0000:00/0000:00:14.3/ieee80211/phy0/rfkill0) (driver iwlwifi)
kernel: [    5.710741] iwlwifi 0000:00:14.3: Applying debug destination EXTERNAL_DRAM
kernel: [    5.843615] iwlwifi 0000:00:14.3: FW already configured (0) - re-configuring
kernel: [    6.047669] iwlwifi 0000:00:14.3: Microcode SW error detected. Restarting 0x0.
kernel: [    6.047740] iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
kernel: [    6.047742] iwlwifi 0000:00:14.3: Status: 0x00000100, count: 6
kernel: [    6.047743] iwlwifi 0000:00:14.3: Loaded firmware version: 48.13675109.0
kernel: [    6.047744] iwlwifi 0000:00:14.3: 0x00000071 | NMI_INTERRUPT_UMAC_FATAL    
kernel: [    6.047744] iwlwifi 0000:00:14.3: 0x000022F0 | trm_hw_status0
kernel: [    6.047745] iwlwifi 0000:00:14.3: 0x00000000 | trm_hw_status1
kernel: [    6.047745] iwlwifi 0000:00:14.3: 0x004C2204 | branchlink2
kernel: [    6.047746] iwlwifi 0000:00:14.3: 0x004B0CE8 | interruptlink1
kernel: [    6.047746] iwlwifi 0000:00:14.3: 0x004B0CE8 | interruptlink2
kernel: [    6.047747] iwlwifi 0000:00:14.3: 0x004BD57E | data1
kernel: [    6.047747] iwlwifi 0000:00:14.3: 0x00001000 | data2
kernel: [    6.047748] iwlwifi 0000:00:14.3: 0xF0000000 | data3
kernel: [    6.047748] iwlwifi 0000:00:14.3: 0x00000000 | beacon time
kernel: [    6.047749] iwlwifi 0000:00:14.3: 0x0004C690 | tsf low
kernel: [    6.047749] iwlwifi 0000:00:14.3: 0x00000000 | tsf hi
kernel: [    6.047750] iwlwifi 0000:00:14.3: 0x00000000 | time gp1
kernel: [    6.047750] iwlwifi 0000:00:14.3: 0x000523CC | time gp2
kernel: [    6.047751] iwlwifi 0000:00:14.3: 0x00000001 | uCode revision type
kernel: [    6.047751] iwlwifi 0000:00:14.3: 0x00000030 | uCode version major
kernel: [    6.047752] iwlwifi 0000:00:14.3: 0x13675109 | uCode version minor
kernel: [    6.047752] iwlwifi 0000:00:14.3: 0x00000351 | hw version
kernel: [    6.047753] iwlwifi 0000:00:14.3: 0x18489004 | board version
kernel: [    6.047754] iwlwifi 0000:00:14.3: 0x8028FD14 | hcmd
kernel: [    6.047754] iwlwifi 0000:00:14.3: 0x00020000 | isr0
kernel: [    6.047755] iwlwifi 0000:00:14.3: 0x00000000 | isr1
kernel: [    6.047755] iwlwifi 0000:00:14.3: 0x08F04002 | isr2
kernel: [    6.047755] iwlwifi 0000:00:14.3: 0x04C1FFDC | isr3
kernel: [    6.047756] iwlwifi 0000:00:14.3: 0x00000000 | isr4
kernel: [    6.047756] iwlwifi 0000:00:14.3: 0x001301EE | last cmd Id
kernel: [    6.047757] iwlwifi 0000:00:14.3: 0x004BD57E | wait_event
kernel: [    6.047758] iwlwifi 0000:00:14.3: 0x00000000 | l2p_control
kernel: [    6.047758] iwlwifi 0000:00:14.3: 0x00000000 | l2p_duration
kernel: [    6.047759] iwlwifi 0000:00:14.3: 0x00000000 | l2p_mhvalid
kernel: [    6.047759] iwlwifi 0000:00:14.3: 0x00000000 | l2p_addr_match
kernel: [    6.047760] iwlwifi 0000:00:14.3: 0x00000048 | lmpm_pmg_sel
kernel: [    6.047760] iwlwifi 0000:00:14.3: 0x00000000 | timestamp
kernel: [    6.047761] iwlwifi 0000:00:14.3: 0x00001064 | flow_handler
kernel: [    6.047796] iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
kernel: [    6.047796] iwlwifi 0000:00:14.3: Status: 0x00000100, count: 7
kernel: [    6.047797] iwlwifi 0000:00:14.3: 0x20000034 | NMI_INTERRUPT_WDG
kernel: [    6.047798] iwlwifi 0000:00:14.3: 0x00000000 | umac branchlink1
kernel: [    6.047798] iwlwifi 0000:00:14.3: 0xC008CF5C | umac branchlink2
kernel: [    6.047799] iwlwifi 0000:00:14.3: 0x8048BDC8 | umac interruptlink1
kernel: [    6.047799] iwlwifi 0000:00:14.3: 0xC00866DC | umac interruptlink2
kernel: [    6.047800] iwlwifi 0000:00:14.3: 0x00000004 | umac data1
kernel: [    6.047800] iwlwifi 0000:00:14.3: 0xC00866DC | umac data2
kernel: [    6.047801] iwlwifi 0000:00:14.3: 0x00000000 | umac data3
kernel: [    6.047801] iwlwifi 0000:00:14.3: 0x00000030 | umac major
kernel: [    6.047802] iwlwifi 0000:00:14.3: 0x13675109 | umac minor
kernel: [    6.047802] iwlwifi 0000:00:14.3: 0x000523BE | frame pointer
kernel: [    6.047803] iwlwifi 0000:00:14.3: 0xC0885E5C | stack pointer
kernel: [    6.047803] iwlwifi 0000:00:14.3: 0x00190405 | last host cmd
kernel: [    6.047804] iwlwifi 0000:00:14.3: 0x00000000 | isr status reg
kernel: [    6.047952] iwlwifi 0000:00:14.3: FW error in SYNC CMD GEO_TX_POWER_LIMIT
kernel: [    6.047970]  iwl_trans_pcie_gen2_send_hcmd+0x476/0x4c0 [iwlwifi]
kernel: [    6.047978]  iwl_trans_send_cmd+0x62/0xd0 [iwlwifi]
kernel: [    6.048102] iwlwifi 0000:00:14.3: Collecting data: trigger 2 fired.
kernel: [    6.048106] iwlwifi 0000:00:14.3: Firmware not running - cannot dump error
kernel: [    6.073863] iwlwifi 0000:00:14.3: Applying debug destination EXTERNAL_DRAM
kernel: [    6.216495] iwlwifi 0000:00:14.3: FW already configured (0) - re-configuring
kernel: [    6.422275] iwlwifi 0000:00:14.3: Microcode SW error detected. Restarting 0x0.
kernel: [    6.422369] iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
kernel: [    6.422370] iwlwifi 0000:00:14.3: Status: 0x00000100, count: 6
kernel: [    6.422371] iwlwifi 0000:00:14.3: Loaded firmware version: 48.13675109.0
kernel: [    6.422372] iwlwifi 0000:00:14.3: 0x00000071 | NMI_INTERRUPT_UMAC_FATAL    
kernel: [    6.422372] iwlwifi 0000:00:14.3: 0x000022F0 | trm_hw_status0
kernel: [    6.422372] iwlwifi 0000:00:14.3: 0x00000000 | trm_hw_status1
kernel: [    6.422373] iwlwifi 0000:00:14.3: 0x004C2204 | branchlink2
kernel: [    6.422373] iwlwifi 0000:00:14.3: 0x004B0CE8 | interruptlink1
kernel: [    6.422374] iwlwifi 0000:00:14.3: 0x004B0CE8 | interruptlink2
kernel: [    6.422374] iwlwifi 0000:00:14.3: 0x004BD57E | data1
kernel: [    6.422374] iwlwifi 0000:00:14.3: 0x00001000 | data2
kernel: [    6.422375] iwlwifi 0000:00:14.3: 0xF0000008 | data3
kernel: [    6.422375] iwlwifi 0000:00:14.3: 0x00000000 | beacon time
kernel: [    6.422376] iwlwifi 0000:00:14.3: 0x0004EEB1 | tsf low
kernel: [    6.422376] iwlwifi 0000:00:14.3: 0x00000000 | tsf hi
kernel: [    6.422376] iwlwifi 0000:00:14.3: 0x00000000 | time gp1
kernel: [    6.422377] iwlwifi 0000:00:14.3: 0x00054E9C | time gp2
kernel: [    6.422377] iwlwifi 0000:00:14.3: 0x00000001 | uCode revision type
kernel: [    6.422378] iwlwifi 0000:00:14.3: 0x00000030 | uCode version major
kernel: [    6.422378] iwlwifi 0000:00:14.3: 0x13675109 | uCode version minor
kernel: [    6.422378] iwlwifi 0000:00:14.3: 0x00000351 | hw version
kernel: [    6.422379] iwlwifi 0000:00:14.3: 0x18489004 | board version
kernel: [    6.422379] iwlwifi 0000:00:14.3: 0x8027FD14 | hcmd
kernel: [    6.422380] iwlwifi 0000:00:14.3: 0x00020000 | isr0
kernel: [    6.422380] iwlwifi 0000:00:14.3: 0x00000000 | isr1
kernel: [    6.422380] iwlwifi 0000:00:14.3: 0x08F04802 | isr2
kernel: [    6.422381] iwlwifi 0000:00:14.3: 0x04C1FFDC | isr3
kernel: [    6.422381] iwlwifi 0000:00:14.3: 0x00000000 | isr4
kernel: [    6.422381] iwlwifi 0000:00:14.3: 0x001201EE | last cmd Id
kernel: [    6.422382] iwlwifi 0000:00:14.3: 0x004BD57E | wait_event
kernel: [    6.422382] iwlwifi 0000:00:14.3: 0x00000000 | l2p_control
kernel: [    6.422383] iwlwifi 0000:00:14.3: 0x00000000 | l2p_duration
kernel: [    6.422383] iwlwifi 0000:00:14.3: 0x00000000 | l2p_mhvalid
kernel: [    6.422383] iwlwifi 0000:00:14.3: 0x00000000 | l2p_addr_match
kernel: [    6.422384] iwlwifi 0000:00:14.3: 0x00000048 | lmpm_pmg_sel
kernel: [    6.422384] iwlwifi 0000:00:14.3: 0x00000000 | timestamp
kernel: [    6.422385] iwlwifi 0000:00:14.3: 0x00001054 | flow_handler
kernel: [    6.422417] iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
kernel: [    6.422418] iwlwifi 0000:00:14.3: Status: 0x00000100, count: 7
kernel: [    6.422418] iwlwifi 0000:00:14.3: 0x20000034 | NMI_INTERRUPT_WDG
kernel: [    6.422419] iwlwifi 0000:00:14.3: 0x00000000 | umac branchlink1
kernel: [    6.422419] iwlwifi 0000:00:14.3: 0xC008CF5C | umac branchlink2
kernel: [    6.422419] iwlwifi 0000:00:14.3: 0x8048BDC8 | umac interruptlink1
kernel: [    6.422420] iwlwifi 0000:00:14.3: 0xC00866DC | umac interruptlink2
kernel: [    6.422420] iwlwifi 0000:00:14.3: 0x00000004 | umac data1
kernel: [    6.422421] iwlwifi 0000:00:14.3: 0xC00866DC | umac data2
kernel: [    6.422421] iwlwifi 0000:00:14.3: 0x00000000 | umac data3
kernel: [    6.422421] iwlwifi 0000:00:14.3: 0x00000030 | umac major
kernel: [    6.422422] iwlwifi 0000:00:14.3: 0x13675109 | umac minor
kernel: [    6.422422] iwlwifi 0000:00:14.3: 0x00054E91 | frame pointer
kernel: [    6.422422] iwlwifi 0000:00:14.3: 0xC0885E5C | stack pointer
kernel: [    6.422423] iwlwifi 0000:00:14.3: 0x00180405 | last host cmd
kernel: [    6.422423] iwlwifi 0000:00:14.3: 0x00000000 | isr status reg
kernel: [    6.422576] iwlwifi 0000:00:14.3: FW error in SYNC CMD GEO_TX_POWER_LIMIT
kernel: [    6.422594]  iwl_trans_pcie_gen2_send_hcmd+0x476/0x4c0 [iwlwifi]
kernel: [    6.422601]  iwl_trans_send_cmd+0x62/0xd0 [iwlwifi]
kernel: [    6.422694] iwlwifi 0000:00:14.3: Collecting data: trigger 2 fired.
kernel: [    6.422697] iwlwifi 0000:00:14.3: Firmware not running - cannot dump error
kernel: [    6.442869] iwlwifi 0000:00:14.3: Applying debug destination EXTERNAL_DRAM
kernel: [    6.574754] iwlwifi 0000:00:14.3: FW already configured (0) - re-configuring
kernel: [    6.779398] iwlwifi 0000:00:14.3: Microcode SW error detected. Restarting 0x0.
kernel: [    6.779495] iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
kernel: [    6.779496] iwlwifi 0000:00:14.3: Status: 0x00000100, count: 6
kernel: [    6.779496] iwlwifi 0000:00:14.3: Loaded firmware version: 48.13675109.0
kernel: [    6.779497] iwlwifi 0000:00:14.3: 0x00000071 | NMI_INTERRUPT_UMAC_FATAL    
kernel: [    6.779498] iwlwifi 0000:00:14.3: 0x000022F0 | trm_hw_status0
kernel: [    6.779498] iwlwifi 0000:00:14.3: 0x00000000 | trm_hw_status1
kernel: [    6.779498] iwlwifi 0000:00:14.3: 0x004C2204 | branchlink2
kernel: [    6.779499] iwlwifi 0000:00:14.3: 0x004B0CE8 | interruptlink1
kernel: [    6.779499] iwlwifi 0000:00:14.3: 0x004B0CE8 | interruptlink2
kernel: [    6.779499] iwlwifi 0000:00:14.3: 0x004BD57E | data1
kernel: [    6.779500] iwlwifi 0000:00:14.3: 0x00001000 | data2
kernel: [    6.779500] iwlwifi 0000:00:14.3: 0xF0000000 | data3
kernel: [    6.779501] iwlwifi 0000:00:14.3: 0x00000000 | beacon time
kernel: [    6.779501] iwlwifi 0000:00:14.3: 0x0004C42A | tsf low
kernel: [    6.779501] iwlwifi 0000:00:14.3: 0x00000000 | tsf hi
kernel: [    6.779502] iwlwifi 0000:00:14.3: 0x00000000 | time gp1
kernel: [    6.779502] iwlwifi 0000:00:14.3: 0x00052179 | time gp2
kernel: [    6.779503] iwlwifi 0000:00:14.3: 0x00000001 | uCode revision type
kernel: [    6.779503] iwlwifi 0000:00:14.3: 0x00000030 | uCode version major
kernel: [    6.779503] iwlwifi 0000:00:14.3: 0x13675109 | uCode version minor
kernel: [    6.779504] iwlwifi 0000:00:14.3: 0x00000351 | hw version
kernel: [    6.779504] iwlwifi 0000:00:14.3: 0x18489004 | board version
kernel: [    6.779505] iwlwifi 0000:00:14.3: 0x8027FD14 | hcmd
kernel: [    6.779505] iwlwifi 0000:00:14.3: 0x00020000 | isr0
kernel: [    6.779505] iwlwifi 0000:00:14.3: 0x00000000 | isr1
kernel: [    6.779506] iwlwifi 0000:00:14.3: 0x08F04002 | isr2
kernel: [    6.779506] iwlwifi 0000:00:14.3: 0x04C1FFDC | isr3
kernel: [    6.779506] iwlwifi 0000:00:14.3: 0x00000000 | isr4
kernel: [    6.779507] iwlwifi 0000:00:14.3: 0x001201EE | last cmd Id
kernel: [    6.779507] iwlwifi 0000:00:14.3: 0x004BD57E | wait_event
kernel: [    6.779508] iwlwifi 0000:00:14.3: 0x00000000 | l2p_control
kernel: [    6.779508] iwlwifi 0000:00:14.3: 0x00000000 | l2p_duration
kernel: [    6.779508] iwlwifi 0000:00:14.3: 0x00000000 | l2p_mhvalid
kernel: [    6.779509] iwlwifi 0000:00:14.3: 0x00000000 | l2p_addr_match
kernel: [    6.779509] iwlwifi 0000:00:14.3: 0x00000048 | lmpm_pmg_sel
kernel: [    6.779509] iwlwifi 0000:00:14.3: 0x00000000 | timestamp
kernel: [    6.779510] iwlwifi 0000:00:14.3: 0x00001054 | flow_handler
kernel: [    6.779544] iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
kernel: [    6.779545] iwlwifi 0000:00:14.3: Status: 0x00000100, count: 7
kernel: [    6.779545] iwlwifi 0000:00:14.3: 0x20000034 | NMI_INTERRUPT_WDG
kernel: [    6.779546] iwlwifi 0000:00:14.3: 0x00000000 | umac branchlink1
kernel: [    6.779546] iwlwifi 0000:00:14.3: 0xC008CF5C | umac branchlink2
kernel: [    6.779547] iwlwifi 0000:00:14.3: 0x8048BDC8 | umac interruptlink1
kernel: [    6.779547] iwlwifi 0000:00:14.3: 0xC00866DC | umac interruptlink2
kernel: [    6.779547] iwlwifi 0000:00:14.3: 0x00000004 | umac data1
kernel: [    6.779548] iwlwifi 0000:00:14.3: 0xC00866DC | umac data2
kernel: [    6.779548] iwlwifi 0000:00:14.3: 0x00000000 | umac data3
kernel: [    6.779548] iwlwifi 0000:00:14.3: 0x00000030 | umac major
kernel: [    6.779549] iwlwifi 0000:00:14.3: 0x13675109 | umac minor
kernel: [    6.779549] iwlwifi 0000:00:14.3: 0x0005216D | frame pointer
kernel: [    6.779550] iwlwifi 0000:00:14.3: 0xC0885E5C | stack pointer
kernel: [    6.779550] iwlwifi 0000:00:14.3: 0x00180405 | last host cmd
kernel: [    6.779550] iwlwifi 0000:00:14.3: 0x00000000 | isr status reg
kernel: [    6.779696] iwlwifi 0000:00:14.3: FW error in SYNC CMD GEO_TX_POWER_LIMIT
kernel: [    6.779715]  iwl_trans_pcie_gen2_send_hcmd+0x476/0x4c0 [iwlwifi]
kernel: [    6.779722]  iwl_trans_send_cmd+0x62/0xd0 [iwlwifi]
kernel: [    6.779815] iwlwifi 0000:00:14.3: Collecting data: trigger 2 fired.
kernel: [    6.779822] iwlwifi 0000:00:14.3: Firmware not running - cannot dump error