RTL8821CE 802.11ac intermittent wifi connection

Bug #1847631 reported by Konstantin
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

I am russian, so my English level is too low, I'll do my best.
Technical characteristics is: Ryzen 3 2200U, Radeon Vega 3, RAM 8 Gb, 256 Gb SSD, IPS display 1920*1080 (if you need). Features is right, if you need a model of the laptop: Lenovo Ideapad 330-15ARR.
Problem:
When I launch my laptop, in 3 of 4 cases it start with bugs. The most often problem is lack of Wi-fi connection when this module work. It is showing that's happening tries to connect to saved network, but nothing else. It resolves to open laptop's cover again. Second problem is black screen or hovering screen when system turns on. Well, in this case I reboot all computer again and again until it won't be normal. Usually, it takes about 3-4 times, no more.

These problems on Russian: Самая частая проблема (в 3 из 4 открытий крышки ноутбука) - когда при включении ноутбука из сна, не подключается к сохраненной точке доступа wi-fi. Крутиться колесико, что идет попытка подключения, но ничего больше не происходит, и исправляется это закрытием и открытием крышки ноутбука снова. Я перепробовал все методы из интернета, но проблема так и не исчезла. Следующая проблема встречается не так часто как предыдущая, но тоже довольно нередкая. При полном включении ноутбука (не как в прошлом случае), система полностью зависает либо до предложения ввести пароль с черным экраном, либо после ввода пароля, но тоже с черным экраном. Третья и последняя проблема - зависание системы с нормальным ходом звука или также с его заглючиванием во время работы. Просто работаешь и она вдруг зависает, ничего не помогает кроме перезапуска всей системы. Кроме данных багов ничего не раздражает, очень нравится система. Переустанавливал уже более 5 раз, всегда наблюдаю такие проблемы. Установочный образ не поврежден, так как у друзей все работает без каких-либо багов и зависаний. Очень нравится система, жду более стабильную 19.04 LTS и сразу же обновлюсь на нее.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-65.74-generic 4.15.18
Uname: Linux 4.15.0-65-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct 10 20:30:19 2019
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
DkmsStatus:
 rtl8821ce, v5.2.5_1.26055.20180108.1, 4.15.0-64-generic, x86_64: installed
 rtl8821ce, v5.2.5_1.26055.20180108.1, 4.15.0-65-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] [1002:15dd] (rev c5) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Vega [Radeon Vega 8 Mobile] [17aa:38ef]
InstallationDate: Installed on 2019-07-22 (80 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: LENOVO 81D2
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-65-generic root=UUID=66f72524-149c-45c0-8f82-857606a10e7d ro quiet splash vt.handoff=1
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/15/2018
dmi.bios.vendor: LENOVO
dmi.bios.version: 7VCN24WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: NO DPK
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo ideapad 330-15ARR
dmi.modalias: dmi:bvnLENOVO:bvr7VCN24WW:bd06/15/2018:svnLENOVO:pn81D2:pvrLenovoideapad330-15ARR:rvnLENOVO:rnLNVNB161216:rvrNODPK:cvnLENOVO:ct10:cvrLenovoideapad330-15ARR:
dmi.product.family: ideapad 330-15ARR
dmi.product.name: 81D2
dmi.product.version: Lenovo ideapad 330-15ARR
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.97-1ubuntu1~18.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 19.0.8-0ubuntu0~18.04.2
version.libgl1-mesa-glx: libgl1-mesa-glx 19.0.8-0ubuntu0~18.04.2
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

Revision history for this message
Konstantin (kostyastrong) wrote :
Revision history for this message
Konstantin (kostyastrong) wrote :

Thanks for this free system. I love Ubuntu but waiting for more stable system 19.04 LTS in April!)

Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Thanks for the bug report. We request that each bug report only describe one problem, not two as in this case. So let's make this bug about the wifi issue. If you would like to discuss the other issue then please open a new bug for it.

affects: xorg (Ubuntu) → linux (Ubuntu)
summary: - Bug with start of the system Ubuntu 18.04 LTS
+ RTL8821CE 802.11ac intermittent wifi connection
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Status changed to Confirmed

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1740231, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

To post a comment you must log in.
This report contains Public information  
Everyone can see this information.

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.