Ich habe dieses Problem jetzt seit etwa einem Jahr. Das System hatte Windows 10 (standardmäßig). Ich habe Ubuntu 18.04 installiert und nach einer Weile bekam ich diese Meldungen, dass die Netzwerkverbindung fehlgeschlagen ist. Um das Problem zu lösen, habe ich zuerst von Windows und dann von Ubuntu gebootet und alles war in Ordnung. Jetzt habe ich Ubuntu 20.04 anstelle von 18.04 installiert und das Problem besteht weiterhin! Ich habe jeden Tipp zur Fehlerbehebung befolgt, den ich bekommen konnte, aber überhaupt kein Glück gehabt. Beispiel:WLAN kann nach dem Upgrade auf 20.04 nicht verwendet werden. Ich kenne mich mit WLAN-Einstellungen, Adaptern oder der Hardware-Fehlerbehebung bei Netzwerkgeräten usw. nicht so gut aus. Was soll ich tun?
$lspci -knn | grep Net -A3; rfkill list
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: yes
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
$lspci -nnk | grep 0280 -A3
07:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8822BE 802.11a/b/g/n/ac WiFi adapter [10ec:b822]
Subsystem: Lenovo ThinkPad E595 [17aa:b023]
Kernel driver in use: rtw_8822be
Kernel modules: rtw_8822be
$sudo dmesg | grep -e rtw -e 07:00
[ 0.312590] pci 0000:07:00.0: [10ec:b822] type 00 class 0x028000
[ 0.312733] pci 0000:07:00.0: reg 0x10: [io 0x4000-0x40ff]
[ 0.312849] pci 0000:07:00.0: reg 0x18: [mem 0xa4300000-0xa430ffff 64bit]
[ 0.313345] pci 0000:07:00.0: supports D1 D2
[ 0.313346] pci 0000:07:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 4.124095] rtw_core: loading out-of-tree module taints kernel.
[ 4.124575] rtw_core: module verification failed: signature and/or required key missing - tainting kernel
[ 4.129813] rtw_8822be 0000:07:00.0: Firmware version 27.2.0, H2C version 13
[ 4.156586] rtw_8822be 0000:07:00.0: use rfe_def[5]
[ 4.402224] rtw_8822be 0000:07:00.0 wlp7s0: renamed from wlan0
[ 6.567004] rtw_8822be 0000:07:00.0: start vif 80:2b:f9:1b:00:65 on port 0
[ 11.921675] rtw_8822be 0000:07:00.0: sta 44:ff:ba:0a:e4:14 joined with macid 0
[ 36.975365] WARNING: CPU: 1 PID: 8 at /home/mypc/Programs/rtw88/pci.c:1308 rtw_dbi_read8.constprop.0+0xaa/0xc0 [rtw_pci]
[ 36.975366] Modules linked in: ccm cmac nvidia_uvm(O) algif_hash algif_skcipher af_alg bnep nvidia_drm(PO) nvidia_modeset(PO) snd_sof_pci snd_sof_intel_byt snd_sof_intel_ipc snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_xtensa_dsp snd_sof_intel_hda snd_sof snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine nls_iso8859_1 snd_hda_codec_hdmi snd_hda_codec_realtek mei_hdcp intel_rapl_msr snd_hda_codec_generic ledtrig_audio x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm nvidia(PO) crct10dif_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper rapl snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep snd_pcm rtw_8822be(OE) rtw_8822b(OE) rtw_pci(OE) rtw_core(OE) snd_seq_midi snd_seq_midi_event intel_cstate i915 mac80211 snd_rawmidi uvcvideo serio_raw btusb intel_wmi_thunderbolt wmi_bmof snd_seq efi_pstore btrtl videobuf2_vmalloc cfg80211 btbcm drm_kms_helper snd_seq_device snd_timer *
[ 36.975400] Workqueue: phy0 rtw_watch_dog_work [rtw_core]
[ 36.975402] RIP: 0010:rtw_dbi_read8.constprop.0+0xaa/0xc0 [rtw_pci]
[ 36.975410] rtw_pci_link_ps+0x54/0x90 [rtw_pci]
[ 36.975414] rtw_leave_lps+0x86/0x1e0 [rtw_core]
[ 36.975417] rtw_watch_dog_work+0x1c5/0x240 [rtw_core]
[ 36.975426] rtw_8822be 0000:07:00.0: failed to read ASPM, ret=-5
[ 36.978645] rtw_8822be 0000:07:00.0: failed to send h2c command
[ 37.120335] rtw_8822be 0000:07:00.0: firmware failed to leave lps state
[ 37.123467] rtw_8822be 0000:07:00.0: failed to send h2c command
[ 37.126604] rtw_8822be 0000:07:00.0: failed to send h2c command
[ 37.129731] rtw_8822be 0000:07:00.0: failed to send h2c command
[ 37.132880] rtw_8822be 0000:07:00.0: failed to send h2c command
[ 37.136015] rtw_8822be 0000:07:00.0: failed to send h2c command
[ 37.139138] rtw_8822be 0000:07:00.0: failed to send h2c command
[ 37.139491] WARNING: CPU: 1 PID: 8 at /home/mypc/Programs/rtw88/pci.c:1308 rtw_dbi_read8.constprop.0+0xaa/0xc0 [rtw_pci]
[ 37.139492] Modules linked in: *
[ 37.139619] Workqueue: phy0 rtw_watch_dog_work [rtw_core]
[ 37.139627] RIP: 0010:rtw_dbi_read8.constprop.0+0xaa/0xc0 [rtw_pci]
[ 37.139666] rtw_pci_link_ps+0x54/0x90 [rtw_pci]
[ 37.139685] rtw_enter_lps+0xe2/0x120 [rtw_core]
[ 37.139698] rtw_watch_dog_work+0x216/0x240 [rtw_core]
[ 37.139739] rtw_8822be 0000:07:00.0: failed to read ASPM, ret=-5
[ 37.977471] WARNING: CPU: 2 PID: 8 at /home/mypc/Programs/rtw88/pci.c:1308 rtw_dbi_read8.constprop.0+0xaa/0xc0 [rtw_pci]
[ 37.977473] Modules linked in: *
[ 37.977658] RIP: 0010:rtw_dbi_read8.constprop.0+0xaa/0xc0 [rtw_pci]
[ 37.977698] rtw_pci_link_ps+0x54/0x90 [rtw_pci]
[ 37.977718] rtw_leave_lps+0x86/0x1e0 [rtw_core]
[ 37.977733] rtw_ops_config+0xc6/0xe0 [rtw_core]
[ 37.977979] rtw_8822be 0000:07:00.0: failed to read ASPM, ret=-5
[ 37.981116] rtw_8822be 0000:07:00.0: failed to send h2c command
[ 38.121815] rtw_8822be 0000:07:00.0: firmware failed to leave lps state
[ 38.124946] rtw_8822be 0000:07:00.0: failed to send h2c command
[ 38.128078] rtw_8822be 0000:07:00.0: failed to send h2c command
[ 38.736176] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[0]
[ 38.736256] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[1]
[ 38.736331] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[2]
[ 38.736405] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[3]
[ 38.736480] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[5]
[ 38.736554] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[6]
[ 38.739754] rtw_8822be 0000:07:00.0: failed to send h2c command
[ 38.739763] rtw_8822be 0000:07:00.0: sta 44:ff:ba:0a:e4:14 with macid 0 left
[ 38.743259] rtw_8822be 0000:07:00.0: failed to send h2c command
[ 38.743332] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[0]
[ 38.743399] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[1]
[ 38.743466] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[2]
[ 38.743533] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[3]
[ 38.743600] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[5]
[ 38.743666] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[6]
[ 38.746784] rtw_8822be 0000:07:00.0: failed to send h2c command
[ 40.798912] rtw_8822be 0000:07:00.0: failed to poll offset=0x5 mask=0x2 value=0x0
[ 40.799206] WARNING: CPU: 2 PID: 8 at /home/mypc/Programs/rtw88/pci.c:1308 rtw_dbi_read8.constprop.0+0xaa/0xc0 [rtw_pci]
[ 40.799206] Modules linked in: rfcomm ccm cmac nvidia_uvm(O) algif_hash algif_skcipher af_alg bnep nvidia_drm(PO) nvidia_modeset(PO) snd_sof_pci snd_sof_intel_byt snd_sof_intel_ipc snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_xtensa_dsp snd_sof_intel_hda snd_sof snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine nls_iso8859_1 snd_hda_codec_hdmi snd_hda_codec_realtek mei_hdcp intel_rapl_msr snd_hda_codec_generic ledtrig_audio x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm nvidia(PO) crct10dif_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper rapl snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep snd_pcm rtw_8822be(OE) rtw_8822b(OE) rtw_pci(OE) rtw_core(OE) snd_seq_midi snd_seq_midi_event intel_cstate i915 mac80211 snd_rawmidi uvcvideo serio_raw btusb intel_wmi_thunderbolt wmi_bmof snd_seq efi_pstore btrtl videobuf2_vmalloc cfg80211 btbcm drm_kms_helper snd_seq_device snd_timer
[ 40.799254] RIP: 0010:rtw_dbi_read8.constprop.0+0xaa/0xc0 [rtw_pci]
[ 40.799263] rtw_pci_link_ps+0x54/0x90 [rtw_pci]
[ 40.799267] ? rtw_core_stop+0xda/0xe0 [rtw_core]
[ 40.799270] rtw_enter_ips+0x3e/0x50 [rtw_core]
[ 40.799273] rtw_ops_config+0xd3/0xe0 [rtw_core]
[ 40.799388] rtw_8822be 0000:07:00.0: failed to read ASPM, ret=-5
[ 40.799545] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[0]
[ 40.799634] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[1]
[ 40.799701] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[2]
[ 40.799790] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[3]
[ 40.799874] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[5]
[ 40.799963] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[6]
[ 40.902509] WARNING: CPU: 8 PID: 853 at /home/mypc/Programs/rtw88/pci.c:1308 rtw_dbi_read8.constprop.0+0xaa/0xc0 [rtw_pci]
[ 40.902510] Modules linked in: rfcomm ccm cmac nvidia_uvm(O) algif_hash algif_skcipher af_alg bnep nvidia_drm(PO) nvidia_modeset(PO) snd_sof_pci snd_sof_intel_byt snd_sof_intel_ipc snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_xtensa_dsp snd_sof_intel_hda snd_sof snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine nls_iso8859_1 snd_hda_codec_hdmi snd_hda_codec_realtek mei_hdcp intel_rapl_msr snd_hda_codec_generic ledtrig_audio x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm nvidia(PO) crct10dif_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper rapl snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep snd_pcm rtw_8822be(OE) rtw_8822b(OE) rtw_pci(OE) rtw_core(OE) snd_seq_midi snd_seq_midi_event intel_cstate i915 mac80211 snd_rawmidi uvcvideo serio_raw btusb intel_wmi_thunderbolt wmi_bmof snd_seq efi_pstore btrtl videobuf2_vmalloc cfg80211 btbcm drm_kms_helper snd_seq_device snd_timer
[ 40.902621] RIP: 0010:rtw_dbi_read8.constprop.0+0xaa/0xc0 [rtw_pci]
[ 40.902656] rtw_pci_link_ps+0x54/0x90 [rtw_pci]
[ 40.902674] rtw_leave_ips+0x1f/0x80 [rtw_core]
[ 40.902687] rtw_ops_config+0xa3/0xe0 [rtw_core]
[ 40.903198] rtw_8822be 0000:07:00.0: failed to read ASPM, ret=-5
[ 42.942411] rtw_8822be 0000:07:00.0: failed to poll offset=0x5 mask=0x2 value=0x0
[ 42.942416] rtw_8822be 0000:07:00.0: mac power on failed
[ 42.942417] rtw_8822be 0000:07:00.0: failed to power on mac
[ 42.942418] rtw_8822be 0000:07:00.0: leave idle state failed
[ 42.942554] rtw_8822be 0000:07:00.0: failed to leave ips state
[ 42.942556] rtw_8822be 0000:07:00.0: failed to leave idle state
[ 42.942637] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[0]
[ 42.942703] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[1]
[ 42.942769] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[2]
[ 42.942836] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[3]
[ 42.942902] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[5]
[ 42.942969] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[6]
[ 42.943042] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[0]
[ 42.943109] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[1]
[ 42.943175] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[2]
[ 42.943242] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[3]
[ 42.943309] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[5]
[ 42.943375] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[6]
[ 46.873672] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[0]
[ 46.873774] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[1]
[ 46.873841] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[2]
[ 46.873910] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[3]
[ 46.873981] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[5]
[ 46.874048] rtw_8822be 0000:07:00.0: timed out to flush pci tx ring[6]
[ 48.891750] rtw_8822be 0000:07:00.0: failed to poll offset=0x5 mask=0x2 value=0x0
[ 48.892064] WARNING: CPU: 1 PID: 8 at /home/mypc/Programs/rtw88/pci.c:1308 rtw_dbi_read8.constprop.0+0xaa/0xc0 [rtw_pci]
[ 48.892064] Modules linked in: rfcomm ccm cmac nvidia_uvm(O) algif_hash algif_skcipher af_alg bnep nvidia_drm(PO) nvidia_modeset(PO) snd_sof_pci snd_sof_intel_byt snd_sof_intel_ipc snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_xtensa_dsp snd_sof_intel_hda snd_sof snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine nls_iso8859_1 snd_hda_codec_hdmi snd_hda_codec_realtek mei_hdcp intel_rapl_msr snd_hda_codec_generic ledtrig_audio x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm nvidia(PO) crct10dif_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper rapl snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep snd_pcm rtw_8822be(OE) rtw_8822b(OE) rtw_pci(OE) rtw_core(OE) snd_seq_midi snd_seq_midi_event intel_cstate i915 mac80211 snd_rawmidi uvcvideo serio_raw btusb intel_wmi_thunderbolt wmi_bmof snd_seq efi_pstore btrtl videobuf2_vmalloc cfg80211 btbcm drm_kms_helper snd_seq_device snd_timer
[ 48.892134] RIP: 0010:rtw_dbi_read8.constprop.0+0xaa/0xc0 [rtw_pci]
...
Ich habe einen Teil davon eingefügt, weil es für Ask Ubuntu zu groß ist