Kubuntu 18.04, добавил в систему PCI-E адаптер Fenvi FV-AX3000. Wi-Fi заработал "из коробки", но с оговорками: во время работы возникают фризы и подлагивания длительностью не более секунды: замирает курсор мыши, тормозится видео, заикается аудио и т.п. Частота таких замерзаний хорошо коррелируется с интенсивностью передачи данных по Wi-Fi.
$ lspci -knn | grep Net -A3
02:00.0 Network controller [0280]: Intel Corporation Wi-Fi 6 AX200 [8086:2723] (rev 1a)
Subsystem: Intel Corporation Wi-Fi 6 AX200 [8086:0084]
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
В такие моменты в логах проскакивает следующая информация:
dmesg[ 2938.288103] iwlwifi 0000:02:00.0: Microcode SW error detected. Restarting 0x0.
[ 2938.288210] iwlwifi 0000:02:00.0: Start IWL Error Log Dump:
[ 2938.288213] iwlwifi 0000:02:00.0: Status: 0x00000040, count: 6
[ 2938.288215] iwlwifi 0000:02:00.0: Loaded firmware version: 48.4fa0041f.0
[ 2938.288218] iwlwifi 0000:02:00.0: 0x00004435 | ADVANCED_SYSASSERT
[ 2938.288221] iwlwifi 0000:02:00.0: 0x008026F0 | trm_hw_status0
[ 2938.288223] iwlwifi 0000:02:00.0: 0x00000000 | trm_hw_status1
[ 2938.288225] iwlwifi 0000:02:00.0: 0x004F8E3C | branchlink2
[ 2938.288228] iwlwifi 0000:02:00.0: 0x004E4FF4 | interruptlink1
[ 2938.288230] iwlwifi 0000:02:00.0: 0x004E4FF4 | interruptlink2
[ 2938.288232] iwlwifi 0000:02:00.0: 0x00002EAD | data1
[ 2938.288234] iwlwifi 0000:02:00.0: 0xDEADBEEF | data2
[ 2938.288236] iwlwifi 0000:02:00.0: 0xDEADBEEF | data3
[ 2938.288238] iwlwifi 0000:02:00.0: 0x2C016B7F | beacon time
[ 2938.288241] iwlwifi 0000:02:00.0: 0x08126482 | tsf low
[ 2938.288243] iwlwifi 0000:02:00.0: 0x00000028 | tsf hi
[ 2938.288245] iwlwifi 0000:02:00.0: 0x00000000 | time gp1
[ 2938.288247] iwlwifi 0000:02:00.0: 0x0113F75A | time gp2
[ 2938.288249] iwlwifi 0000:02:00.0: 0x00000001 | uCode revision type
[ 2938.288252] iwlwifi 0000:02:00.0: 0x00000030 | uCode version major
[ 2938.288254] iwlwifi 0000:02:00.0: 0x4FA0041F | uCode version minor
[ 2938.288256] iwlwifi 0000:02:00.0: 0x00000340 | hw version
[ 2938.288258] iwlwifi 0000:02:00.0: 0x00C89000 | board version
[ 2938.288261] iwlwifi 0000:02:00.0: 0x03D1001C | hcmd
[ 2938.288263] iwlwifi 0000:02:00.0: 0x80020000 | isr0
[ 2938.288265] iwlwifi 0000:02:00.0: 0x01400000 | isr1
[ 2938.288267] iwlwifi 0000:02:00.0: 0x08F00002 | isr2
[ 2938.288269] iwlwifi 0000:02:00.0: 0x04C18B0C | isr3
[ 2938.288271] iwlwifi 0000:02:00.0: 0x00000000 | isr4
[ 2938.288274] iwlwifi 0000:02:00.0: 0x8189009D | last cmd Id
[ 2938.288276] iwlwifi 0000:02:00.0: 0x00008AF0 | wait_event
[ 2938.288278] iwlwifi 0000:02:00.0: 0x00000080 | l2p_control
[ 2938.288280] iwlwifi 0000:02:00.0: 0x00000020 | l2p_duration
[ 2938.288283] iwlwifi 0000:02:00.0: 0x0000003F | l2p_mhvalid
[ 2938.288285] iwlwifi 0000:02:00.0: 0x000000CE | l2p_addr_match
[ 2938.288287] iwlwifi 0000:02:00.0: 0x00000009 | lmpm_pmg_sel
[ 2938.288289] iwlwifi 0000:02:00.0: 0x00000000 | timestamp
[ 2938.288291] iwlwifi 0000:02:00.0: 0x00003014 | flow_handler
[ 2938.288332] iwlwifi 0000:02:00.0: Start IWL Error Log Dump:
[ 2938.288335] iwlwifi 0000:02:00.0: Status: 0x00000040, count: 7
[ 2938.288337] iwlwifi 0000:02:00.0: 0x20000070 | NMI_INTERRUPT_LMAC_FATAL
[ 2938.288339] iwlwifi 0000:02:00.0: 0x00000000 | umac branchlink1
[ 2938.288342] iwlwifi 0000:02:00.0: 0xC008CC3C | umac branchlink2
[ 2938.288344] iwlwifi 0000:02:00.0: 0x8048D0E6 | umac interruptlink1
[ 2938.288346] iwlwifi 0000:02:00.0: 0x8048D0E6 | umac interruptlink2
[ 2938.288348] iwlwifi 0000:02:00.0: 0x00000400 | umac data1
[ 2938.288350] iwlwifi 0000:02:00.0: 0x8048D0E6 | umac data2
[ 2938.288353] iwlwifi 0000:02:00.0: 0x00000000 | umac data3
[ 2938.288355] iwlwifi 0000:02:00.0: 0x00000030 | umac major
[ 2938.288357] iwlwifi 0000:02:00.0: 0x4FA0041F | umac minor
[ 2938.288359] iwlwifi 0000:02:00.0: 0x0113F76A | frame pointer
[ 2938.288361] iwlwifi 0000:02:00.0: 0xC0886284 | stack pointer
[ 2938.288363] iwlwifi 0000:02:00.0: 0x005C0118 | last host cmd
[ 2938.288365] iwlwifi 0000:02:00.0: 0x00000000 | isr status reg
[ 2938.288373] iwlwifi 0000:02:00.0: Fseq Registers:
[ 2938.288379] iwlwifi 0000:02:00.0: 0xE0000101 | FSEQ_ERROR_CODE
[ 2938.288383] iwlwifi 0000:02:00.0: 0x00290021 | FSEQ_TOP_INIT_VERSION
[ 2938.288388] iwlwifi 0000:02:00.0: 0x80050008 | FSEQ_CNVIO_INIT_VERSION
[ 2938.288393] iwlwifi 0000:02:00.0: 0x0000A503 | FSEQ_OTP_VERSION
[ 2938.288398] iwlwifi 0000:02:00.0: 0x80000003 | FSEQ_TOP_CONTENT_VERSION
[ 2938.288403] iwlwifi 0000:02:00.0: 0x4552414E | FSEQ_ALIVE_TOKEN
[ 2938.288408] iwlwifi 0000:02:00.0: 0x00100530 | FSEQ_CNVI_ID
[ 2938.288413] iwlwifi 0000:02:00.0: 0x00000532 | FSEQ_CNVR_ID
[ 2938.288418] iwlwifi 0000:02:00.0: 0x00100530 | CNVI_AUX_MISC_CHIP
[ 2938.288425] iwlwifi 0000:02:00.0: 0x00000532 | CNVR_AUX_MISC_CHIP
[ 2938.288432] iwlwifi 0000:02:00.0: 0x05B0905B | CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
[ 2938.288440] iwlwifi 0000:02:00.0: 0x0000025B | CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
[ 2938.288598] iwlwifi 0000:02:00.0: Collecting data: trigger 2 fired.
[ 2938.288607] ieee80211 phy0: Hardware restart was requested
[ 2939.036949] iwlwifi 0000:02:00.0: Applying debug destination EXTERNAL_DRAM
[ 2939.185091] iwlwifi 0000:02:00.0: FW already configured (0) - re-configuring
В общем, хоть и работает, но эти подвисания бесят жутко. Не знаю пока, с какой стороны подойти к этой проблеме. Может кто-нибудь помочь или навести на мысль? Заранее спасибо.