RTL8821AE abruptly halts all network traffic
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Triaged
|
High
|
Unassigned |
Bug Description
Computer: Lenovo IdeaPad 110
WiFi AP: Linksys E2500 v1.0 with firmware v2.0.00
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/
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-
ProcVersionSign
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
CurrentDesktop: Unity
Date: Tue Aug 30 01:36:22 2016
HibernationDevice: RESUME=
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=
RelatedPackageV
linux-
linux-
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.
dmi.board.name: Nano 5A8
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40700 WIN
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLenovo:
dmi.product.name: 80TJ
dmi.product.
dmi.sys.vendor: LENOVO
Related issue: /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1577111
https:/