This bug should close because the configuration has been disassembled,
we can hardly expect hotellina to change the wireless card back to what
it was just so that the bug can be solved. ;-)
However, several of the problems in this bug were fixed by upstream
patches, in particular b8b8b16352cd ("rtlwifi: rtl8821ae: Fix connection
lost problem") merged for 4.14-rc4.
I now have rtl8821ae working well. It was terrible for a while. What I
did was
(a) test several ubuntu kernels to find which ones were affected,
(b) using git bisect, tested several custom kernels, and proved my
problem began with a single commit 40b368af4b75 ("rtlwifi: Fix alignment
issues"),
(c) worked with upstream to determine a likely cause; the commit wasn't
widely tested,
(d) proved through testing that the BIOS can have an effect; because the
rtl8821ae driver does not reset the card, but inherits the card in
whatever state the BIOS left it. This can randomise problem reports.
(e) proved that a power down and reboot can have a different effect to a
warm reboot; some of the wireless card device registers are unchanged on
warm reboot. This can randomise problem reports.
Hope that helps.
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https://bugs.launchpad.net/bugs/1653012
Title:
10ec:8821 [Asus X555L] RTL8821AE doesn't work after some minutes.
Status in linux package in Ubuntu:
Confirmed
Bug description:
My laptop is an ASUS X555L and I have a wireless card RTL8821AE. When WiFi
connected via 802.11b to my Vodafone router:
Product type HG658c
Hardware version HG658BZV VER.A
Software version V100R001C172B227
after a few minutes it hangs and doesn't let me surf internet although
it shows connected. With Windows 10 on the same laptop the WiFi works
seamlessly.
I tried the following but it didn't improve the situation:
+ Disabling power management:
iwconfig
wlp3s0 IEEE 802.11 ESSID:"internet"
Mode:Managed Frequency:2.437 GHz Access Point: 20:08:ED:7A:18:A4
Bit Rate=11 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=66/70 Signal level=-44 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:17 Missed beacon:0
+ Changing WiFi to 802.11g or 802.11n. 802.11b is more stable but still has
issues.
+ Changing encryption type from WPA-PSK to none.
+ Bringing the laptop in the same room as the AP with no obstructions in
between.
---
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: john 1630 F.... pulseaudio
/dev/snd/controlC0: john 1630 F.... pulseaudio
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=30b021e6-b5af-4de8-af81-71108e2d8381
InstallationDate: Installed on 2016-12-28 (0 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
MachineType: ASUSTeK COMPUTER INC. X555LAB
Package: linux (not installed)
ProcEnviron:
LANGUAGE=en_IE:en
TERM=xterm
PATH=(custom, no user)
LANG=en_IE.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-57-generic
root=UUID=aa44a294-fde3-45eb-b84f-98b998f29eef ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-57.78-generic 4.4.35
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not
accessible: Permission denied
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-4.4.0-57-generic N/A
linux-backports-modules-4.4.0-57-generic N/A
linux-firmware 1.157.6
Tags: xenial
Uname: Linux 4.4.0-57-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 08/04/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X555LAB.503
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X555LAB
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: ATN12345678901234567
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrX555LAB.503:bd08/04/2015:svnASUSTeKCOMPUTERINC.:pnX555LAB:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX555LAB:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: X555LAB
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
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