thor@thor-ideapad:~$ iwconfig
lo no wireless extensions.
wlp1s0 IEEE 802.11 ESSID:"Johansen"
Mode:Managed Frequency:5.18 GHz Access Point: 58:6D:8F:C6:38:89
Bit Rate=72.2 Mb/s Tx-Power=30 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=-38 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
enp2s0 no wireless extensions.
The E2500's hardware is v1.0 and the firmware is v2.0.00.
Devices that are working flawlessly with this router include:
iPhone 6 Plus
Huawei Nexus 6P
Samsung Galaxy S5
MacBook Pro 13" Mid-2012
RTL8192CUS-based USB WiFi dongle
I have never had any connection issues. My other laptops have been able
to remain connected with open SSH sessions to remote systems for days at
a time without disconnecting. I should mention that I now make sure to
ping my router, not the Internet, to check if the WiFi interface is
working properly. Since my Internet is reliable, it doesn't make much of
a difference, but this way, I eliminate potential error sources.
The USB dongle listed last was purchased today and is plugged into the
Lenovo as a workaround for WiFi until it's fixed. It works perfectly
fine if I use the rtl8192cu-fixes driver. I unplug it whenever I test
the internal WiFi for this bug ticket.
(Is it just me, or are all the Realtek WiFi drivers in the kernel kind
of unreliable? This is not the first time Realtek chips have given me
trouble.)
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https://bugs.launchpad.net/bugs/1618267
Title:
RTL8821AE abruptly halts all network traffic
Status in linux package in Ubuntu:
Incomplete
Bug description:
Computer: Lenovo IdeaPad 110
WiFi AP: Linksys E2500
After a few minutes of mixed Internet use, the WiFi hangs and the
interface ceases to pass traffic:
64 bytes from 8.8.8.8: icmp_seq=281 ttl=55 time=12.8 ms
64 bytes from 8.8.8.8: icmp_seq=282 ttl=55 time=12.5 ms
64 bytes from 8.8.8.8: icmp_seq=283 ttl=55 time=58.4 ms
64 bytes from 8.8.8.8: icmp_seq=284 ttl=55 time=68.0 ms
64 bytes from 8.8.8.8: icmp_seq=285 ttl=55 time=65.6 ms
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
^C
--- 8.8.8.8 ping statistics ---
314 packets transmitted, 283 received, 9% packet loss, time 366615ms
rtt min/avg/max/mdev = 11.423/177.382/7227.733/806.648 ms, pipe 8
Before the driver hangs, speeds are 30/5 Mbps despite a 75 Mbps WiFi
transmit rate and a 70/70 Mbps symmetrical fiber connection in the
house. The connection and the router are known to perform better than
this with other equipment.
Forcing the router into 802.11g mode does, at least at a cursory
glance, seem to mitigate the halting problem, but speeds remain
abysmal.
If there is any kind of technically involved tests I can do to speed
up the debugging of this problem, let me know. I have some experience
with embedded development in C.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-34-generic 4.4.0-34.53
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: thor 3179 F.... pulseaudio
/dev/snd/controlC0: thor 3179 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Aug 30 01:36:22 2016
HibernationDevice: RESUME=UUID=a482ae0a-dd87-41de-be2c-50541edcfa53
InstallationDate: Installed on 2016-08-29 (0 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
MachineType: LENOVO 80TJ
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-34-generic.efi.signed
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.4.0-34-generic N/A
linux-backports-modules-4.4.0-34-generic N/A
linux-firmware 1.157.3
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/24/2016
dmi.bios.vendor: Lenovo
dmi.bios.version: 1QCN16WW
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Nano 5A8
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40700 WIN
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo ideapad 110-15ACL
dmi.modalias:
dmi:bvnLenovo:bvr1QCN16WW:bd03/24/2016:svnLENOVO:pn80TJ:pvrLenovoideapad110-15ACL:rvnLENOVO:rnNano5A8:rvrSDK0J40700WIN:cvnLENOVO:ct10:cvrLenovoideapad110-15ACL:
dmi.product.name: 80TJ
dmi.product.version: Lenovo ideapad 110-15ACL
dmi.sys.vendor: LENOVO
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