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#1 Yesterday 20:37:43

pbateman
Member
Registered: 2020-07-02
Posts: 6

WIFI Connection deactivates or slows down when connected to 5GHz band

Hey guys,
Sorry to doublepost, posted this on the newbie corner but got no replies. Trying my hand here since its a laptop.

Trying to get some ideas on troubleshooting a WiFi issue I've been having.

My WiFi connection as of about a month or 2 has been randomly slowing down to a crawl, where webpages stop loading (but the wifi connection is still showing connected in Network manager icon) or it will just drop completely and I get error saying 'connection mySSID deactivated' followed by 'connection mySSID activated' and will go on a loop like that for a few seconds to a min. Even when it works OK the connection speed is a lot slower than my other devices on the same network

None of my other devices are experiencing this.
I have been running Arch in this laptop for about 4 years, since i first got it, and never really had any issues until the last couple of months.

At one point I got so frustrated, I just reinstalled Arch on the laptop, thinking maybe i had way too many things installed that might be causing conflict. But even with a fresh install, issue persists.

I have recently noticed this happens when connected to my default WIFI's 5GHZ band. If I connect to the 2.4GHZ band things seem stable (although obviously slow)

From lspci-k: network controller: Intel Corporation Cannon Point-LP CNVi [Wireless-AC] (rev 11) Subsystem: Intel Corporation Device 0030 Kernel driver in use: iwlwifi Kernel modules: iwlwifi

Current laptop: Thinkpad X1 Carbon 7th Gen--- KDE Plasma 6.3.5 Kernel: 6.15.2-arch1-1 --Also have the LTS kernel as a backup and the issue happens on that one as well
I ran a  journal CTL and found quite a few of these when the issue acts up:

Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: Microcode SW error detected.  Restarting 0x2000000.
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: Transport status: 0x0000004A, valid: 6
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: Loaded firmware version: 46.7e3e4b69.0 9000-pu-b0-jf-b0-46.ucode
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000071 | NMI_INTERRUPT_UMAC_FATAL   
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x0080AAF0 | trm_hw_status0
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000000 | trm_hw_status1
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x004897FA | branchlink2
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x0047905E | interruptlink1
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00006CB4 | interruptlink2
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x0001B3B6 | data1
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00001000 | data2
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0xF0000008 | data3
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x3D00559F | beacon time
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x46C45C4A | tsf low
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000021 | tsf hi
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000000 | time gp1
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x017D12F7 | time gp2
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000001 | uCode revision type
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x0000002E | uCode version major
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x7E3E4B69 | uCode version minor
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000312 | hw version
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00489002 | board version
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x0AD6001C | hcmd
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0xA6F22002 | isr0
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000000 | isr1
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x08101802 | isr2
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x4041FDCC | isr3
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000000 | isr4
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x0064019C | last cmd Id
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x0001B3B6 | wait_event
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000000 | l2p_control
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00002020 | l2p_duration
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000000 | l2p_mhvalid
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000084 | l2p_addr_match
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x0000000D | lmpm_pmg_sel
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x28021135 | timestamp
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00005078 | flow_handler
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: Transport status: 0x0000004A, valid: 7
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x20100705 | ADVANCED_SYSASSERT
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000000 | umac branchlink1
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0xC0088A3A | umac branchlink2
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0xC0084CC4 | umac interruptlink1
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000000 | umac interruptlink2
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00004424 | umac data1
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0xDEADBEEF | umac data2
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0xDEADBEEF | umac data3
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x0000002E | umac major
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x7E3E4B69 | umac minor
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x017D12DE | frame pointer
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0xC0886C60 | stack pointer
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x0064019C | last host cmd
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000000 | isr status reg
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: IML/ROM dump:
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00002324 | IML/ROM error/state
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000003 | IML/ROM data1
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: Fseq Registers:
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x58A2CA06 | FSEQ_ERROR_CODE
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x00000000 | FSEQ_TOP_INIT_VERSION
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x154C3800 | FSEQ_CNVIO_INIT_VERSION
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x0000A384 | FSEQ_OTP_VERSION
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x3ECCDBB0 | FSEQ_TOP_CONTENT_VERSION
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0xA778DC57 | FSEQ_ALIVE_TOKEN
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x1481A88C | FSEQ_CNVI_ID
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0xEBF5DEFD | FSEQ_CNVR_ID
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x01000100 | CNVI_AUX_MISC_CHIP
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x01300202 | CNVR_AUX_MISC_CHIP
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x0000485B | CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0xA5A5A5A2 | CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x117BFBFE | FSEQ_PREV_CNVIO_INIT_VERSION
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x772FFDAF | FSEQ_WIFI_FSEQ_VERSION
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x45B61F66 | FSEQ_BT_FSEQ_VERSION
Jun 22 09:14:53 archlinux kernel: iwlwifi 0000:00:14.3: 0x8A899156 | FSEQ_CLASS_TP_VERSION

Also getting quite a few of these messages:

Jun 22 12:33:32 archlinux wpa_supplicant[546]: wlan0: CTRL-EVENT-SCAN-FAILED ret=-22

As of yesterday Ive been just connected to my 2.4GHz band which , like i said stabilizes things, and no wifi errors on the journal, but would like to be able to connect to 5GHz again for faster speed. Trying to see if there's anything I can try or just wait out and see if future  Kernel updates fix this.

Thanks!

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