[Bug 1622293] Re: rtl8821ae WiFI does not work
Summary; my own rtl8821ae frequent connection lost problem was fixed by upstream patch b8b8b16352cd ("rtlwifi: rtl8821ae: Fix connection lost problem") merged for 4.14-rc4. I've recently fixed a problem very much like the problems reported in this bug. In particular the loss of WiFi scan results, and the connection loss on a burst of download data. Workaround was to turn wireless off then on again (using rfkill), or reboot. 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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work
Try latest mainline kernel & latest firmware for rtl8821ae. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work
The same error is now exhibited with the newly released kernel version 4.10.0-30 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work
Wifi drops with Ubuntu version 16.04.2 LTS (hardware enablement turned on) with kernel versions 4.10.0-27 and 4.10.0-28. It worked OK with kernel 4.8.0-58. The kernel upgrade was done when prompted by Ubuntu. The wifi drops when BBC's iplayer or any of the speed test sites downloads a lot of data. The wifi configuration as produced by a sudo lshw -C network is: *-network description: Wireless interface product: RTL8821AE 802.11ac PCIe Wireless Network Adapter vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@:03:00.0 logical name: wlp3s0 version: 00 serial: b0:c0:90:3b:d8:f3 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=rtl8821ae driverversion=4.10.0-27-generic firmware=N/A ip=192.168.0.12 latency=0 link=yes multicast=yes wireless=IEEE 802.11 resources: irq:51 ioport:3000(size=256) memory:b200-b2003fff After the wifi is dropped, the command sudo service network-manager restart does not turn on the wifi again -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work on Ubuntu 16.04
Anton Polukhin, the issue you are reporting is an upstream one. Could you please report this problem following the instructions verbatim at https://wiki.ubuntu.com/Bugs/Upstream/kernel to the appropriate mailing list (TO Larry.Finger, and Realtek WlanFAE CC linux-wireless)? Please provide a direct URL to your post to the mailing list when it becomes available so that it may be tracked. Thank you for your help. ** Changed in: linux (Ubuntu) Importance: Medium => High ** Changed in: linux (Ubuntu) Status: Incomplete => Triaged ** Summary changed: - rtl8821ae WiFI does not work on Ubuntu 16.04 + rtl8821ae WiFI does not work -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work on Ubuntu 16.04
It uses 2.4GHz b/g/n and there's no way to disable 802.11n or force only 802.11b/g usage. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work on Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work on Ubuntu 16.04
Anton Polukhin, to clarify, what version of 802.11 are you using (ex. 802.11n)? ** Tags added: latest-firmware -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work on Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work on Ubuntu 16.04
Vendor Netgear Hardware VersionWNDR4000 Firmware VersionV1.0.2.4_9.1.86 GUI Language VersionV1.0.2.4_2.1.17.1 Firmware is up-to-date, I've updated it a few days ago. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work on Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work on Ubuntu 16.04
Anton Polukhin, could you please advise to your router firmware version? ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work on Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work on Ubuntu 16.04
I've changed the router to Netgear WNDR4000 and the problem still exists. Previous router TP-LINK WR841N v9 was successfully used by 5 different devices, so the problem is not in the router's firmware. It's in the rtl8821ae kernel module. ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work on Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work on Ubuntu 16.04
Anton Polukhin, as per http://www.tp-linkru.com/download/TL- WR841N_V9.html#Firmware an update to your router's buggy, insecure, and outdated firmware is available (150331). When you update to this following how does this improve the situation? For more on firmware updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Please note you don't have to create a new report. It is most helpful that after the firmware is updated, if the problem is still reproducible: 1) Please provide a screenshot of the router showing the firmware. 2) Please make a comment specifically advising on how this improves the situation. 3) Please mark this report Status Confirmed. If it's not reproducible, please mark this as Invalid. Thank you for your help. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work on Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work on Ubuntu 16.04
** Tags removed: kernel-bug-exists-upstream-4.8-rc5 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work on Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work on Ubuntu 16.04
2) Problems with kernel 4.8-rc6 are mostly the same: tl8821ae does not loose the connection (at least network manager does not display that), but the speed drops down to 50KB/s really often. Instead of 2.5 MB/s connection speed, I have an average of ~100KB/s, with rare peeks up to 2.5MB/s and common dropdowns to less that 50KB/s. Latency is huge: if I pause downloading at the speed of 50KB/s and try to download some very simple web page, it may take a few minutes. ** Tags added: kernel-bug-exists-upstream-4.8-rc6 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work on Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work on Ubuntu 16.04
1) Manufacturer: TP-LINK Model: WR841N v9 Firmware: 3.15.9 Build 140625 Rel.64271n -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work on Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work on Ubuntu 16.04
Anton Polukhin: 1) Could you please advise to your router manufacturer, model, and firmware version? 2) Could you please ensure you are testing the latest mainline kernel (now 4.8-rc6)? ** Tags removed: cecn43ww ** Tags added: latest-bios-cecn43ww -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work on Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work on Ubuntu 16.04
With kernel 4.8-rc5, rtl8821ae does not looses connection (at least network manager does not display that), but the speed drops down to 0 really often and restores only after half a minute. ** Tags added: kernel-bug-exists-upstream kernel-bug-exists- upstream-4.8-rc5 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work on Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1622293] Re: rtl8821ae WiFI does not work on Ubuntu 16.04
Anton Polukhin, thank you for reporting this and helping make Ubuntu better. In order to allow additional upstream developers to examine the issue, at your earliest convenience, could you please test the latest upstream kernel available from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D ? Please keep in mind the following: 1) The one to test is at the very top line at the top of the page (not the daily folder). 2) The release names are irrelevant. 3) The folder time stamps aren't indicative of when the kernel actually was released upstream. 4) Install instructions are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds . If testing on your main install would be inconvenient, one may: 1) Install Ubuntu to a different partition and then test this there. 2) Backup, or clone the primary install. If the latest kernel did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this issue is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description: kernel-fixed-upstream kernel-fixed-upstream-X.Y-rcZ Where X, and Y are the first two numbers of the kernel version, and Z is the release candidate number if it exists. If the mainline kernel does not fix the issue, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-X.Y-rcZ Please note, an error to install the kernel does not fit the criteria of kernel-bug-exists-upstream. Also, you don't need to apport-collect further unless specifically requested to do so. It is most helpful that after testing of the latest upstream kernel is complete, you mark this report Status Confirmed. Lastly, to keep this issue relevant to upstream, please continue to test the latest mainline kernel as it becomes available. Thank you for your help. ** Tags removed: rtl8821ae ** Tags added: cecn43ww ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work on Ubuntu 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs