Wow, it's been almost 2 years since I reported this bug and I think it's time to finally end it. I've decided to give Ubuntu one more chance on this problem and installed the 16.04.2 LTS version. After few days of testing my wireless connection remains stable without a single drop with default firmware and no workarounds applied. Latency may still not be perfect but I think that's not a problem for this bug report.
Linux 4.8.0-39-generic #42~16.04.1-Ubuntu SMP Mon Feb 20 15:06:07 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1451233 Title: 10ec:b723 [Lenovo B5400] Realtek RTL8723BE drops connection until reboot Status in linux package in Ubuntu: Triaged Bug description: I have a Lenovo B5400 laptop with RTL8723BE wireless module. Using 802.11n the internet connection constantly getting lost after a random duration (usually after 20-30 minutes). The NetworkManager applet does not recognize it (still looks like i have a connection), but when I try do disconnect and connect again, there is only one useful information I can find in dmesg: "wlan0: deauthenticating from [ap mac address] by local choice (Reason: 3=DEAUTH_LEAVING)" Reinserting the driver (modprobe -r rtl8723be and modprobe rtl8723) used to be my only workaround, but it does not work anymore and now I have to reboot. Router Manufacturer: EDIMAX Model: BR-6214K Firmware version: 1.40 2008/11/03 08:33:04 Switching to 802.11g (54Mb/s) shows a small performance improvement while browsing websites. However there are still random "ping jumps" and the connection still drops (maybe 1-2 minutes later than usual at least). The following improves performance, but I am still encountering some minor performance issues while playing online games (random lag spikes): sudo nano /etc/modprobe.d/rtl8723be.conf options rtl8723be ips=0 fwlps=0 --- ApportVersion: 2.14.1-0ubuntu3.11 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: pk 1907 F.... pulseaudio /dev/snd/controlC0: pk 1907 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=4ce160f4-029c-4fd5-ba3f-254c6e3e33dd InstallationDate: Installed on 2015-05-24 (0 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) MachineType: LENOVO 20278 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-38-generic root=UUID=a9da170f-b86b-434f-910b-00929ceb8420 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.16.0-38.52~14.04.1-generic 3.16.7-ckt10 RelatedPackageVersions: linux-restricted-modules-3.16.0-38-generic N/A linux-backports-modules-3.16.0-38-generic N/A linux-firmware 1.127.12 Tags: trusty Uname: Linux 3.16.0-38-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 03/03/2014 dmi.bios.vendor: LENOVO dmi.bios.version: J7ET61WW (2.06 ) dmi.board.asset.tag: Not Available dmi.board.name: 20278 QB0 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrJ7ET61WW(2.06):bd03/03/2014:svnLENOVO:pn20278:pvrB5400:rvnLENOVO:rn20278QB0:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20278 dmi.product.version: B5400 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1451233/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
