After 24h i can confirm that my solution is not stable. If i turn off the machine the problem is back and this time is not speed in question but the network manager that will "collapse".
Anyway, i can confirm that i can use the wifi card in any frequency, but is not stable and will drop after boot many times until the network manager crash. ** Changed in: linux (Ubuntu) Status: Incomplete => New -- 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/1761693 Title: Wifi realtek 8822be BUG <=18.04 Status in linux package in Ubuntu: New Bug description: I am a regular linux user and i have bought last week a new computer that comes with the realtek 8822be wireless chipset. While using Ubuntu 16.04(Kernel version updated to 4.14 where we started to have support to this chipset) or both 18.04 beta 1 and final version i found a problem: 1º when i boot all this versions with the kernel version >= 4.14, i found out that the driver is instaled and she is detected in the network manager.Anyway, when i used she won´t work and in few secconds later will shutdown. When i go to the wifi settings i can´t find networks! 2º I use modprobe so that i can manipulate my drivers/modules and i can start to work with my wifi card: -> modprobe -rv r8822be -> modprobe -v r8822be aspm=0 The problem is that when i connect to a 5ghz frequency router, i have very slow download speed 8 mbps max (Usually my speed is approximately 200/210 mbps in wifi mode).In the outher hand when i connect to a 2.4ghz frequency router it works fine! Thanks Best regards --- ApportVersion: 2.20.9-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: teste 1285 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 HibernationDevice: RESUME=UUID=9fdace6b-915c-4770-8261-aa8dcaa735b1 InstallationDate: Installed on 2018-04-07 (0 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Beta amd64 (20180404) MachineType: ASUSTeK COMPUTER INC. X411UN Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-13-generic.efi.signed root=UUID=1d0c4a1b-32fe-43b2-ae21-2b0d9101e5fc ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10 RelatedPackageVersions: linux-restricted-modules-4.15.0-13-generic N/A linux-backports-modules-4.15.0-13-generic N/A linux-firmware 1.173 StagingDrivers: r8822be Tags: bionic staging Uname: Linux 4.15.0-13-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 08/04/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: X411UN.300 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: X411UN dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX411UN.300:bd08/04/2017:svnASUSTeKCOMPUTERINC.:pnX411UN:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX411UN:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: X dmi.product.name: X411UN dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1761693/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp