Public bug reported:
I'm running KDE Neon User Edition, fully updated.
The rtl8821ce dkmn from the repository would not make a reliable connection so
I used
https://github.com/tomaspinho/rtl8821ce
to install it. Installing the 5.13.0-1029-oem kernel made the difference,
making the connection strong and reliable. However, the logs are filling up
with the following warning.
3177.640087] ------------[ cut here ]------------
[ 3177.640092] WARNING: CPU: 3 PID: 710 at
/var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/hal/hal_com.c:11447
rtw_lps_state_chk+0x39/0x41 [8821ce]
[ 3177.640250] Modules linked in: rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack
ipt_REJECT nf_reject_ipv4 xt_tcpudp ip6table_mangle ip6table_nat iptable_mangle
iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables
nfnetlink ip6table_filter ip6_tables iptable_filter bpfilter bridge stp llc
cmac algif_hash algif_skcipher af_alg snd_ctl_led bnep snd_soc_skl_hda_dsp
snd_soc_intel_hda_dsp_common snd_soc_hdac_hdmi snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic snd_soc_dmic snd_sof_pci_intel_tgl
snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation
soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof
snd_soc_hdac_hda snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi
soundwire_bus ledtrig_audio snd_soc_core snd_compress ac97_bus
snd_pcm_dmaengine snd_hda_intel intel_tcc_cooling snd_intel_dspcfg
snd_intel_sdw_acpi x86_pkg_temp_thermal intel_powerclamp snd_hda_codec
snd_hda_core snd_hwdep kvm_intel snd_pcm joydev
[ 3177.640317] nls_iso8859_1 snd_seq_midi kvm intel_rapl_msr mei_hdcp
snd_seq_midi_event snd_rawmidi 8821ce(OE) snd_seq intel_cstate uvcvideo btusb
videobuf2_vmalloc snd_seq_device btrtl videobuf2_memops videobuf2_v4l2
processor_thermal_device_pci_legacy btbcm hp_wmi btintel videobuf2_common
platform_profile processor_thermal_device snd_timer input_leds
processor_thermal_rfim sparse_keymap bluetooth serio_raw wmi_bmof snd videodev
efi_pstore processor_thermal_mbox processor_thermal_rapl ecdh_generic mei_me
intel_rapl_common intel_pmt_telemetry mc hid_multitouch ee1004 soundcore ecc
mei intel_pmt_class cfg80211 intel_soc_dts_iosf int3403_thermal
int340x_thermal_zone acpi_pad int3400_thermal acpi_thermal_rel hp_wireless
mac_hid sch_fq_codel coretemp msr parport_pc ppdev lp parport ip_tables
x_tables autofs4 hid_logitech_hidpp btrfs blake2b_generic xor zstd_compress
hid_logitech_dj raid6_pq libcrc32c usbhid hid_generic nvme ahci i915 nvme_core
libahci crct10dif_pclmul i2c_algo_bit
[ 3177.640405] crc32_pclmul drm_kms_helper ghash_clmulni_intel syscopyarea
sysfillrect aesni_intel sysimgblt fb_sys_fops cec rc_core crypto_simd cryptd
drm intel_lpss_pci intel_lpss idma64 i2c_i801 intel_pmt xhci_pci i2c_smbus vmd
xhci_pci_renesas wmi i2c_hid_acpi i2c_hid hid video pinctrl_tigerlake
[ 3177.640444] CPU: 3 PID: 710 Comm: RTW_CMD_THREAD Tainted: G W OE
5.13.0-1029-oem #36-Ubuntu
[ 3177.640449] Hardware name: HP HP Laptop 17-cn1xxx/89B7, BIOS F.11 08/03/2021
[ 3177.640451] RIP: 0010:rtw_lps_state_chk+0x39/0x41 [8821ce]
[ 3177.640591] Code: 54 53 49 89 fc bb 0b 00 00 00 be 04 06 00 00 4c 89 e7 e8
aa 4f f9 ff 84 c0 79 11 bf 01 00 00 00 e8 8f 71 fd ff 80 eb 01 75 e0 <0f> 0b 5b
41 5c 5d c3 c3 0f 1f 44 00 00 55 48 89 e5 41 54 53 48 83
[ 3177.640595] RSP: 0018:ffffba0ac0bd7c20 EFLAGS: 00010246
[ 3177.640598] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 3177.640612] RDX: ffff911edf9a7140 RSI: 0000000055555554 RDI: ffffba0ac0bd7b58
[ 3177.640613] RBP: ffffba0ac0bd7c30 R08: 0000000000000001 R09: 0000000000000001
[ 3177.640613] R10: 0000000000000000 R11: 0000000000000000 R12: ffffba0ac0b21000
[ 3177.640614] R13: ffffba0ac0bd7cfc R14: ffffba0ac0c11000 R15: ffffba0ac0c11000
[ 3177.640614] FS: 0000000000000000(0000) GS:ffff911edf980000(0000)
knlGS:0000000000000000
[ 3177.640615] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3177.640616] CR2: 00007f5ac16f2000 CR3: 00000001c6c64006 CR4: 0000000000770ee0
[ 3177.640616] PKRU: 55555554
[ 3177.640617] Call Trace:
[ 3177.640618] <TASK>
[ 3177.640620] SetHwReg+0x188/0x738 [8821ce]
[ 3177.640658] rtl8821c_sethwreg+0xcfd/0xd50 [8821ce]
[ 3177.640695] sethwreg+0x2a/0x14f [8821ce]
[ 3177.640738] rtw_hal_set_hwreg+0x19/0x1b [8821ce]
[ 3177.640788] rtw_set_ps_mode+0xd9/0x1e7 [8821ce]
[ 3177.640825] LPS_Leave+0xd0/0xef [8821ce]
[ 3177.640862] traffic_status_watchdog+0x1d8/0x2d1 [8821ce]
[ 3177.640883] ? _rtw_mi_dynamic_check_timer_handlder+0x15/0x15 [8821ce]
[ 3177.640918] rtw_iface_dynamic_chk_wk_hdl+0x5a/0x1a9 [8821ce]
[ 3177.640941] ? _rtw_mi_dynamic_check_timer_handlder+0x15/0x15 [8821ce]
[ 3177.640986] _rtw_mi_dynamic_chk_wk_hdl+0xe/0x15 [8821ce]
[ 3177.641016] _rtw_mi_process+0x65/0x7c [8821ce]
[ 3177.641044] rtw_mi_dynamic_chk_wk_hdl+0x1f/0x21 [8821ce]
[ 3177.641073] rtw_dynamic_chk_wk_hdl+0x12/0x4a [8821ce]
[ 3177.641088] rtw_drvextra_cmd_hdl+0xaf/0x436 [8821ce]
[ 3177.641105] rtw_cmd_thread+0x2b2/0x403 [8821ce]
[ 3177.641119] ? session_tracker_cmd_hdl+0x1c5/0x1c5 [8821ce]
[ 3177.641135] ? rtw_stop_cmd_thread+0x3e/0x3e [8821ce]
[ 3177.641150] kthread+0x128/0x150
[ 3177.641152] ? set_kthread_struct+0x40/0x40
[ 3177.641153] ret_from_fork+0x1f/0x30
[ 3177.641156] </TASK>
[ 3177.641157] ---[ end trace 84446337d6a86a9d ]---
[ 7634.972609] ------------[ cut here ]------------
** Affects: rtl8821ce (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1960716
Title:
rtl8821ce driver throws kernel warning about every 1500 seconds
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