There seems to be a bug in the USB/ath9k. I see many messages like this, and have to unplug/replug the adapter many times a day:
[48001.541124] ------------[ cut here ]------------
[48001.541128] usb 3-3: BOGUS urb xfer, pipe 1 != type 3
[48001.541186] WARNING: CPU: 0 PID: 27317 at drivers/usb/core/urb.c:478 usb_submit_urb+0x561/0x5e0
[48001.541187] Modules linked in: r8712u(C) ccm snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi ledtrig_audio snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_usb_audio snd_hda_core snd_usbmidi_lib snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event edac_mce_amd snd_rawmidi ath9k_htc ath9k_common ath9k_hw snd_seq uvcvideo v4l2_common videobuf2_vmalloc videobuf2_memops ath ccp videobuf2_v4l2 videobuf2_common snd_seq_device mac80211 kvm snd_timer videodev irqbypass snd serio_raw mc wmi_bmof joydev cfg80211 k10temp input_leds fam15h_power libarc4 soundcore mac_hid sch_fq_codel cuse parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid amdgpu crct10dif_pclmul crc32_pclmul ghash_clmulni_intel amd_iommu_v2 gpu_sched i2c_algo_bit aesni_intel ttm drm_kms_helper aes_x86_64 crypto_simd syscopyarea cryptd sysfillrect glue_helper sysimgblt pata_acpi fb_sys_fops psmouse drm pata_atiixp i2c_piix4 ahci r8169 libahci realtek wmi
[48001.541254] CPU: 0 PID: 27317 Comm: kworker/u48:2 Tainted: G WC 5.3.0-62-generic #56-Ubuntu
[48001.541256] Hardware name: MSI MS-7641/760GMA-P34(FX) (MS-7641) , BIOS V25.1 04/20/2015
[48001.541310] Workqueue: phy1 ieee80211_scan_work [mac80211]
[48001.541316] RIP: 0010:usb_submit_urb+0x561/0x5e0
[48001.541320] Code: 00 89 4d c4 44 89 55 c8 44 89 45 d4 e8 68 5e f1 ff 44 8b 45 d4 8b 4d c4 4c 89 fa 48 89 c6 48 c7 c7 38 d3 bd 88 e8 aa 28 8d ff <0f> 0b 44 8b 55 c8 e9 e9 fb ff ff 0f 1f 44 00 00 b8 a6 ff ff ff e9
[48001.541323] RSP: 0018:ffffc2e9c15abaf0 EFLAGS: 00010286
[48001.541325] RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000006
[48001.541327] RDX: 0000000000000007 RSI: 0000000000000096 RDI: ffff9ee667617440
[48001.541329] RBP: ffffc2e9c15abb30 R08: 00000000037e780c R09: 0000000000000004
[48001.541331] R10: 0000000000000000 R11: 0000000000000001 R12: ffff9ee4d4737500
[48001.541332] R13: ffff9ee60499e800 R14: 0000000000000002 R15: ffff9ee660959348
[48001.541335] FS: 0000000000000000(0000) GS:ffff9ee667600000(0000) knlGS:0000000000000000
[48001.541337] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[48001.541339] CR2: 00000b9c80186000 CR3: 0000000293f22000 CR4: 00000000000406f0
[48001.541341] Call Trace:
[48001.541353] hif_usb_send+0x189/0x320 [ath9k_htc]
[48001.541360] htc_issue_send.constprop.0+0x5e/0x70 [ath9k_htc]
[48001.541367] htc_send_epid+0x15/0x20 [ath9k_htc]
[48001.541373] ath9k_wmi_cmd+0x11c/0x1c0 [ath9k_htc]
[48001.541381] ath9k_regread+0x48/0x70 [ath9k_htc]
[48001.541398] ath9k_hw_wait+0x5d/0xa0 [ath9k_hw]
[48001.541412] ath9k_hw_set_reset+0x291/0x420 [ath9k_hw]
[48001.541426] ath9k_hw_set_reset_reg+0x9b/0x240 [ath9k_hw]
[48001.541441] ath9k_hw_reset+0xd21/0x1110 [ath9k_hw]
[48001.541449] ath9k_htc_config+0x203/0x640 [ath9k_htc]
[48001.541454] ? __switch_to_asm+0x34/0x70
[48001.541457] ? __switch_to_asm+0x40/0x70
[48001.541459] ? __switch_to_asm+0x34/0x70
[48001.541461] ? __switch_to_asm+0x40/0x70
[48001.541463] ? __switch_to_asm+0x34/0x70
[48001.541501] ieee80211_hw_config+0x95/0x360 [mac80211]
[48001.541542] ieee80211_scan_work+0x29d/0x520 [mac80211]
[48001.541547] process_one_work+0x1db/0x380
[48001.541551] worker_thread+0x4d/0x400
[48001.541555] kthread+0x104/0x140
[48001.541559] ? process_one_work+0x380/0x380
[48001.541562] ? kthread_park+0x80/0x80
[48001.541565] ret_from_fork+0x22/0x40
[48001.541569] ---[ end trace fa2f8d48d479093d ]---
The kernel version is:
Linux version 5.3.0-62-generic (buildd@lcy01-amd64-018) (gcc version 9.2.1 20191008 (Ubuntu 9.2.1-9ubuntu2)) #56-Ubuntu SMP Tue Jun 23 11:20:52 UTC 2020
I specifically bought a wireless adapter from thinkpenguin.com linked to here:
https://help.ubuntu.com/community/WifiDocs/WirelessCardsSupported
Because I was having trouble with other adapters.
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1886564
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.