Ubuntu 22.04 WiFi issue

Hello,

• What is the model of the wifi card?
• Which driver are you using?
• Do you have the same problem on Windows with this PC?

Good luck

Hello,

What is the model of the wifi card?

 00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection I219-V (rev 21) 04:00.0 Network controller: Broadcom Inc. and subsidiaries BCM4356 802.11ac Wireless Network Adapter (rev 02)

What driver are you using?

 *-network description: Wireless network interface product: BCM4356 802.11ac Wireless Network Adapter manufacturer: Broadcom Inc. and subsidiaries hardware identifier: 0 bus information: pci@0000:04:00.0 logical name: wlp4s0 version: 02 serial number: 74:df:bf:b6:f7:7e bits: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration : broadcast=yes driver=brcmfmac driverversion=7.35.180.197 firmware=01-4c8512f9 ip=192.168.1.63 latency=0 multicast=yes wireless=IEEE 802.11 resources : irq:129 memory:f1400000-f1407fff memory:f1000000-f13fffff *-network description: Ethernet interface product: Ethernet Connection I219-V manufacturer: Intel Corporation hardware identifier: 1f.6 bus information: pci@0000:00:1f.6 logical name: enp0s31f6 version: 21 serial number: c8:5b:76:46:cb:59 capacity: 1Gbit/s bits: 32 bits clock: 33MHz capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration : autonegotiation=on broadcast=yes driver=e1000e driverversion=5.15.0-56-generic firmware=0.13-3 latency=0 link=no multicast=yes port=twisted pair resources : irq:128 memory:f1600000-f161ffff

Do you have the same problem under Windows with this PC?
I bought this PC second-hand, I directly installed Elementary on it, there were issues with it, but not as many.

Thank you

Hello,

I see several possible explanations:

• either the driver poorly supports the card. According to this message, you need to use the brcmfmac driver. Can you check that it is indeed the one that appears when you run:

  lsmod

• or the signal is weak (Wi-Fi box too far away and separated by walls), which you could check with another PC and/or with another operating system
• or the hardware is defective (same)

Good luck

lsmod

 lsmod Module Size Used by isofs 53248 0 uas 28672 0 usb_storage 77824 1 uas rfcomm 81920 4 cmac 16384 3 algif_hash 16384 1 algif_skcipher 16384 1 af_alg 32768 6 algif_hash,algif_skcipher bnep 28672 2 snd_soc_skl 172032 0 snd_soc_hdac_hda 24576 1 snd_soc_skl snd_hda_ext_core 32768 2 snd_soc_hdac_hda,snd_soc_skl snd_soc_sst_ipc 20480 1 snd_soc_skl snd_soc_sst_dsp 36864 1 snd_soc_skl nls_iso8859_1 16384 1 snd_soc_acpi_intel_match 61440 1 snd_soc_skl snd_soc_acpi 16384 2 snd_soc_acpi_intel_match,snd_soc_skl snd_hda_codec_hdmi 77824 1 snd_soc_core 339968 2 snd_soc_hdac_hda,snd_soc_skl snd_ctl_led 24576 0 snd_hda_codec_realtek 159744 1 snd_compress 24576 1 snd_soc_core ac97_bus 16384 1 snd_soc_core snd_pcm_dmaengine 16384 1 snd_soc_core snd_hda_codec_generic 102400 1 snd_hda_codec_realtek snd_hda_intel 53248 3 snd_intel_dspcfg 28672 2 snd_hda_intel,snd_soc_skl snd_intel_sdw_acpi 20480 1 snd_intel_dspcfg snd_hda_codec 163840 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek,snd_soc_hdac_hda snd_hda_core 110592 8 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_hda_codec_realtek,snd_soc_hdac_hda,snd_soc_skl uvcvideo 106496 0 videobuf2_vmalloc 20480 1 uvcvideo videobuf2_memops 20480 1 videobuf2_vmalloc intel_rapl_msr 20480 0 snd_hwdep 16384 1 snd_hda_codec intel_rapl_common 40960 1 intel_rapl_msr videobuf2_v4l2 32768 1 uvcvideo snd_pcm 143360 8 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_compress,snd_soc_core,snd_soc_skl,snd_hda_core,snd_pcm_dmaengine intel_tcc_cooling 16384 0 thinkpad_acpi 131072 0 videobuf2_common 77824 4 videobuf2_vmalloc,videobuf2_v4l2,uvcvideo,videobuf2_memops x86_pkg_temp_thermal 20480 0 intel_powerclamp 20480 0 coretemp 24576 0 videodev 258048 3 videobuf2_v4l2,uvcvideo,videobuf2_common nvram 16384 1 thinkpad_acpi crct10dif_pclmul 16384 1 ghash_clmulni_intel 16384 0 ledtrig_audio 16384 3 snd_ctl_led,snd_hda_codec_generic,thinkpad_acpi snd_seq_midi 20480 0 snd_seq_midi_event 16384 1 snd_seq_midi snd_rawmidi 49152 1 snd_seq_midi aesni_intel 376832 4 brcmfmac 409600 0 btusb 61440 0 snd_seq 77824 2 snd_seq_midi,snd_seq_midi_event mc 65536 4 videodev,videobuf2_v4l2,uvcvideo,videobuf2_common mei_hdcp 24576 0 crypto_simd 16384 1 aesni_intel cryptd 24576 3 crypto_simd,ghash_clmulni_intel btrtl 24576 1 btusb snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi btbcm 24576 1 btusb brcmutil 20480 1 brcmfmac i915 3104768 36 btintel 40960 1 btusb cfg80211 974848 1 brcmfmac bluetooth 704512 33 btrtl,btintel,btbcm,bnep,btusb,rfcomm snd_timer 40960 2 snd_seq,snd_pcm rapl 20480 0 mei_me 40960 1 intel_cstate 20480 0 ecdh_generic 16384 2 bluetooth ecc 36864 1 ecdh_generic joydev 32768 0 input_leds 16384 0 mei 135168 3 mei_hdcp,mei_me ttm 86016 1 i915 drm_kms_helper 311296 1 i915 snd 106496 21 snd_ctl_led,snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_compress,thinkpad_acpi,snd_soc_core,snd_pcm,snd_rawmidi cec 61440 2 drm_kms_helper,i915 rc_core 65536 1 cec i2c_algo_bit 16384 1 i915 serio_raw 20480 0 think_lmi 28672 0 fb_sys_fops 16384 1 drm_kms_helper syscopyarea 16384 1 drm_kms_helper firmware_attributes_class 16384 1 think_lmi wmi_bmof 16384 0 sysfillrect 20480 1 drm_kms_helper sysimgblt 16384 1 drm_kms_helper intel_xhci_usb_role_switch 16384 0 intel_pch_thermal 20480 0 mac_hid 16384 0 soundcore 16384 2 snd_ctl_led,snd platform_profile 16384 1 thinkpad_acpi ee1004 20480 0 sch_fq_codel 20480 3 ipmi_devintf 20480 0 ipmi_msghandler 122880 1 ipmi_devintf msr 16384 0 parport_pc 49152 0 ppdev 24576 0 drm 622592 14 drm_kms_helper,i915,ttm lp 28672 0 mtd 77824 0 parport 69632 3 parport_pc,lp,ppdev ramoops 32768 0 reed_solomon 28672 1 ramoops pstore_blk 16384 0 pstore_zone 32768 1 pstore_blk efi_pstore 16384 0 ip_tables 32768 0 x_tables 53248 1 ip_tables autofs4 49152 2 hid_generic 16384 0 usbhid 65536 0 hid 151552 2 usbhid,hid_generic rtsx_pci_sdmmc 32768 0 crc32_pclmul 16384 0 i2c_i801 36864 0 e1000e 299008 0 psmouse 176128 0 i2c_smbus 20480 1 i2c_i801 rtsx_pci 106496 1 rtsx_pci_sdmmc ahci 45056 2 libahci 45056 1 ahci xhci_pci 24576 0 xhci_pci_renesas 20480 1 xhci_pci wmi 32768 2 wmi_bmof,think_lmi video 61440 2 thinkpad_acpi,i915 

On smartphone, I don't have this problem.

Yes, in the same room, I get good WIFI on my smartphone.
I don't have a USB dongle, but I plan to buy one.

Hello,

Unfortunately, the dongle does not work on Ubuntu. I removed Ubuntu and installed elementary OS. The connection works and the dongle does too, so I will stay on elementary. Thank you.