RTL8821AE 802.11ac problem after kernel upgrade

RTL8821AE 802.11ac problem after kernel upgrade

[hamed]

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hi,

my wifi works well on kernel version " 4.9.13-200.fc25.x86_64" , but it
become so unstable & keeps disconnecting frequently if i use newer
kernels , i sent attachments  & i hope i can be useful in solving such
problem , thanks for your concern.


[-- Attachment #2: kernels-installed.txt --]
[-- Type: text/plain, Size: 173 bytes --]

kernel-4.9.13-200.fc25.x86_64 ( wifi works good on that)
kernel-4.9.14-200.fc25.x86_64  ( wifi keeps disconnecting)
kernel-4.10.5-200.fc25.x86_64  (wifi keeps diconnecting)

[-- Attachment #3: inxi-output.txt --]
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^[[1;34mSystem:   ^[[0;37m ^[[1;34mHost:^[[0;37m SCORPION ^[[1;34mKernel:^[[0;37m 4.9.13-200.fc25.x86_64 x86_64 (64 bit) ^[[1;34mDesktop:^[[0;37m N/A^[[0;37m
^[[1;34m          ^[[0;37m ^[[1;34mDistro:^[[0;37m Fedora release 25 (Twenty Five)^[[0;37m
^[[1;34mMachine:  ^[[0;37m ^[[1;34mDevice:^[[0;37m laptop ^[[1;34mSystem:^[[0;37m LENOVO ^[[1;34mproduct:^[[0;37m 80T7 ^[[1;34mv:^[[0;37m Lenovo ideapad 110-15IBR ^[[1;34mserial:^[[0;37m PF0JVAK9^[[0;37m
^[[1;34m          ^[[0;37m ^[[1;34mMobo:^[[0;37m LENOVO ^[[1;34mmodel:^[[0;37m 00RD15IPG076 ^[[1;34mv:^[[0;37m NO DPK ^[[1;34mserial:^[[0;37m PF0JVAK9 ^[[1;34mUEFI:^[[0;37m LENOVO ^[[1;34mv:^[[0;37m 1GCN15WW ^[[1;34mdate:^[[0;37m 04/07/2016^[[0;37m
^[[1;34mBattery   ^[[0;37m ^[[1;34mBAT0:^[[0;37m ^[[1;34mcharge:^[[0;37m 23.9 Wh 100.1% ^[[1;34mcondition:^[[0;37m 23.9/23.8 Wh (100%)^[[0;37m
^[[1;34mCPU:      ^[[0;37m ^[[1;34mDual core^[[0;37m Intel Celeron N3060 (-MCP-)^[[0;37m ^[[1;34mcache:^[[0;37m 1024 KB^[[0;37m 
^[[1;34m          ^[[0;37m ^[[1;34mclock speeds:^[[0;37m ^[[1;34mmax:^[[0;37m 2480 MHz ^[[1;34m1:^[[0;37m 1527 MHz ^[[1;34m2:^[[0;37m 1931 MHz^[[0;37m
^[[1;34mGraphics: ^[[0;37m ^[[1;34mCard:^[[0;37m Intel Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller^[[0;37m
^[[1;34m          ^[[0;37m ^[[1;34mDisplay Server:^[[0;37m X.org 1.19.1 ^[[1;34mdriver:^[[0;37m N/A ^[[1;34mtty size:^[[0;37m 150x35 ^[[1;34mAdvanced Data:^[[0;37m N/A for root^[[0;37m
^[[1;34mAudio:    ^[[0;37m ^[[1;34mCard^[[0;37m Intel Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series High Definition Audio Controller^[[0;37m
^[[1;34m          ^[[0;37m ^[[1;34mdriver:^[[0;37m snd_hda_intel^[[0;37m
^[[1;34m          ^[[0;37m ^[[1;34mSound:^[[0;37m Advanced Linux Sound Architecture ^[[1;34mv:^[[0;37m k4.9.13-200.fc25.x86_64^[[0;37m
^[[1;34mNetwork:  ^[[0;37m ^[[1;34mCard-1:^[[0;37m Realtek RTL8821AE 802.11ac PCIe Wireless Network Adapter ^[[1;34mdriver:^[[0;37m rtl8821ae^[[0;37m
^[[1;34m          ^[[0;37m ^[[1;34mIF:^[[0;37m wlp2s0 ^[[1;34mstate:^[[0;37m up ^[[1;34mmac:^[[0;37m 30:f7:72:6e:2c:7d^[[0;37m
^[[1;34m          ^[[0;37m ^[[1;34mCard-2:^[[0;37m Realtek RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller ^[[1;34mdriver:^[[0;37m r8169^[[0;37m
^[[1;34m          ^[[0;37m ^[[1;34mIF:^[[0;37m enp3s0 ^[[1;34mstate:^[[0;37m down ^[[1;34mmac:^[[0;37m c8:5b:76:02:8c:81^[[0;37m
^[[1;34mDrives:   ^[[0;37m ^[[1;34mHDD Total Size:^[[0;37m 500.1GB (26.9% used)^[[0;37m
^[[1;34m          ^[[0;37m ^[[1;34mID-1:^[[0;37m /dev/sda ^[[1;34mmodel:^[[0;37m TOSHIBA_MQ01ABF0 ^[[1;34msize:^[[0;37m 500.1GB^[[0;37m
^[[1;34mPartition:^[[0;37m ^[[1;34mID-1:^[[0;37m / ^[[1;34msize:^[[0;37m 50G ^[[1;34mused:^[[0;37m 15G (31%) ^[[1;34mfs:^[[0;37m ext4 ^[[1;34mdev:^[[0;37m /dev/dm-1^[[0;37m
^[[1;34m          ^[[0;37m ^[[1;34mID-2:^[[0;37m /boot ^[[1;34msize:^[[0;37m 477M ^[[1;34mused:^[[0;37m 256M (58%) ^[[1;34mfs:^[[0;37m ext4 ^[[1;34mdev:^[[0;37m /dev/sda2^[[0;37m
^[[1;34m          ^[[0;37m ^[[1;34mID-3:^[[0;37m /home ^[[1;34msize:^[[0;37m 217G ^[[1;34mused:^[[0;37m 108G (53%) ^[[1;34mfs:^[[0;37m ext4 ^[[1;34mdev:^[[0;37m /dev/dm-3^[[0;37m
^[[1;34m          ^[[0;37m ^[[1;34mID-4:^[[0;37m swap-1 ^[[1;34msize:^[[0;37m 4.16GB ^[[1;34mused:^[[0;37m 0.08GB (2%) ^[[1;34mfs:^[[0;37m swap ^[[1;34mdev:^[[0;37m /dev/dm-2^[[0;37m
^[[1;34mRAID:     ^[[0;37m No RAID devices: /proc/mdstat, md_mod kernel module present^[[0;37m
^[[1;34mSensors:  ^[[0;37m ^[[1;34mSystem Temperatures: cpu:^[[0;37m 57.0C ^[[1;34mmobo:^[[0;37m N/A^[[0;37m
^[[1;34m          ^[[0;37m ^[[1;34mFan Speeds (in rpm): cpu:^[[0;37m N/A^[[0;37m
^[[1;34mInfo:     ^[[0;37m ^[[1;34mProcesses:^[[0;37m 217 ^[[1;34mUptime:^[[0;37m 6 days ^[[1;34mMemory:^[[0;37m 2605.1/3865.2MB ^[[1;34mClient:^[[0;37m Shell (sudo) ^[[1;34minxi:^[[0;37m 2.3.8^[[0;37m ^[[0;37m
^[[0m

[-- Attachment #4: wifi-driver.txt --]
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  *-network
       description: Wireless interface
       product: RTL8821AE 802.11ac PCIe Wireless Network Adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 00
       serial: 30:f7:72:6e:2c:7d
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtl8821ae driverversion=4.9.13-200.fc25.x86_64 firmware=N/A ip=192.168.1.20 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:121 ioport:2000(size=256) memory:91200000-91203fff
  *-network
       description: Ethernet interface
       product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: enp3s0
       version: 07
       serial: c8:5b:76:02:8c:81
       size: 10Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:117 ioport:1000(size=256) memory:91100000-91100fff memory:91000000-91003fff
  *-network:0 DISABLED
       description: Ethernet interface
       physical id: 2
       logical name: virbr0-nic
       serial: 52:54:00:b6:ca:5f
       size: 10Mbit/s
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=no multicast=yes port=twisted pair speed=10Mbit/s
  *-network:1
       description: Ethernet interface
       physical id: 3
       logical name: virbr0
       serial: 52:54:00:b6:ca:5f
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=192.168.122.1 link=no multicast=yes

Re: RTL8821AE 802.11ac problem after kernel upgrade

[Larry Finger]

On 04/16/2017 07:48 PM, hamed wrote:
> hi,
>
> my wifi works well on kernel version " 4.9.13-200.fc25.x86_64" , but it
> become so unstable & keeps disconnecting frequently if i use newer
> kernels , i sent attachments  & i hope i can be useful in solving such
> problem , thanks for your concern.

Hamed,

 From your report, the problem occurred between kernel 4.9.13 and 4.9.14. 
Unfortunately, there were no changes in the kernel.org repos that would affect 
the RTL8821AE. It is possible that Fedora made some change that is not present 
at kernel.org, but I find that unlikely.

Did anything else on your system change? In addition, you should post an excerpt 
of the dmesg log that shows the nature of the disconnect.

Larry