This question is duplicate of this question. I am running 18.04 and having same problems as that of the linked question that is my hotspot created by linux gives very slow internet speed on my mobile. The linked question did not have any answer that's why I am asking this question again. I have ethernet connection which provides 80Mbps download speed. Also hotspot created using Windows provides better speed.
Please do not downvote this question. Either ask me to delete it or edit it accordingly.
Related Information
My wireless driver is rtl8723be
Kernel Version and other things-
Linux puru-PC 4.15.0-34-generic #37-Ubuntu SMP Mon Aug 27 15:21:48 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Output of iwconfig
lo no wireless extensions.
eno1 no wireless extensions.
wlo1 IEEE 802.11 Mode:Master Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Output of ifconfig
eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.24.1.73 netmask 255.255.248.0 broadcast 172.24.7.255
inet6 fe80::5675:a79e:1107:813a prefixlen 64 scopeid 0x20<link>
ether 70:5a:0f:2a:1e:bc txqueuelen 1000 (Ethernet)
RX packets 7078311 bytes 8373543554 (8.3 GB)
RX errors 0 dropped 2981 overruns 0 frame 0
TX packets 2811337 bytes 295452598 (295.4 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 40240 bytes 3773824 (3.7 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 40240 bytes 3773824 (3.7 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlo1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.42.0.1 netmask 255.255.255.0 broadcast 10.42.0.255
inet6 fe80::b278:4297:4437:1448 prefixlen 64 scopeid 0x20<link>
ether 68:14:01:66:72:fb txqueuelen 1000 (Ethernet)
RX packets 56291 bytes 35741642 (35.7 MB)
RX errors 0 dropped 1 overruns 0 frame 0
TX packets 67298 bytes 88097804 (88.0 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Output of lspci | grep Wireless
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
I am removed all type of power saving modes by using these parameters in my /etc/modprobe.d/rtl8723be.conf -
options rtl8723be fwlps=0 ant_sel=2 ips=0 swlps=0
I also used this command to disable powersave for wireless connections-
sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
My entropy as given by cat /proc/sys/kernel/random/entropy_avail is 3742
Output of sudo lshw -class network
*-network
description: Wireless interface
product: RTL8723BE PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlo1
version: 00
serial: 68:14:01:66:72:fb
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8723be driverversion=4.15.0-34-generic firmware=N/A ip=10.42.0.1 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:17 ioport:4000(size=256) memory:94100000-94103fff
*-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@0000:04:00.0
logical name: eno1
version: 0a
serial: 70:5a:0f:2a:1e:bc
size: 100Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix 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=full firmware=rtl8107e-2_0.0.2 02/26/15 ip=172.24.1.73 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
resources: irq:16 ioport:3000(size=256) memory:94004000-94004fff memory:94000000-94003fff
Output of lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 0bda:b006 Realtek Semiconductor Corp.
Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 002: ID 0408:50b0 Quanta Computer, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Output of lspci
00:00.0 Host bridge: Intel Corporation Skylake Host Bridge/DRAM Registers (rev 08)
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 520 (rev 07)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 08)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port (rev f1)
00:1c.4 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1)
00:1d.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #9 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-LP LPC Controller (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 3D controller: NVIDIA Corporation GM108M [GeForce 940M] (rev a2)
02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader (rev 01)
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 0a)
Output of rfkill list all
6: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
10: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
Output of dmesg | grep -i firmware
[ 0.032837] Spectre V2 : Enabling Restricted Speculation for firmware calls
[ 0.080030] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[ 1.435586] [Firmware Bug]: Invalid critical threshold (0)
[ 2.369155] [drm] Finished loading DMC firmware i915/skl_dmc_ver1_26.bin (v1.26)
[ 2.381629] [Firmware Bug]: ACPI(PXSX) defines _DOD but not _DOS
[ 21.967208] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723b_config.bin failed with error -2
[ 22.297776] rtl8723be: Using firmware rtlwifi/rtl8723befw_36.bin
[ 1380.179431] rtl8723be: Using firmware rtlwifi/rtl8723befw_36.bin
[ 4132.061459] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723b_config.bin failed with error -2
[10383.619526] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723b_config.bin failed with error -2
[10423.544817] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723b_config.bin failed with error -2
[11441.006608] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723b_config.bin failed with error -2
[31225.151414] rtl8723be: Using firmware rtlwifi/rtl8723befw_36.bin
[31567.860581] rtl8723be: Using firmware rtlwifi/rtl8723befw_36.bin
[31587.048842] rtl8723be: Using firmware rtlwifi/rtl8723befw_36.bin
[32189.414759] rtl8723be: Using firmware rtlwifi/rtl8723befw_36.bin
**Output of the difference of dmesg before connecting to hotspot and after connecting to hotspot **
[35243.538760] netlink: 'wpa_supplicant': attribute type 213 has an invalid length.
[35243.549651] IPv6: ADDRCONF(NETDEV_CHANGE): wlo1: link becomes ready
[35251.991517] netlink: 'wpa_supplicant': attribute type 213 has an invalid length.
[35251.991704] netlink: 'wpa_supplicant': attribute type 213 has an invalid length.
[35252.020276] rtlwifi: -----hwsec_cam_bitmap: 0x0 entry_idx=4
[35269.022094] netlink: 'wpa_supplicant': attribute type 213 has an invalid length.
[35269.042912] IPv6: ADDRCONF(NETDEV_UP): wlo1: link is not ready
[35270.151052] wlo1: authenticate with 1c:5f:2b:5c:e8:68
[35270.161140] wlo1: send auth to 1c:5f:2b:5c:e8:68 (try 1/3)
[35270.166785] wlo1: authenticated
[35270.168701] wlo1: associate with 1c:5f:2b:5c:e8:68 (try 1/3)
[35270.173415] wlo1: RX AssocResp from 1c:5f:2b:5c:e8:68 (capab=0x411 status=0 aid=8)
[35270.173576] wlo1: associated
[35270.242194] IPv6: ADDRCONF(NETDEV_CHANGE): wlo1: link becomes ready
[35272.761996] wlo1: deauthenticating from 1c:5f:2b:5c:e8:68 by local choice (Reason: 3=DEAUTH_LEAVING)
[35272.828998] netlink: 'wpa_supplicant': attribute type 213 has an invalid length.
[35284.074902] netlink: 'wpa_supplicant': attribute type 213 has an invalid length.
[35284.075154] netlink: 'wpa_supplicant': attribute type 213 has an invalid length.
[35284.177442] rtlwifi: -----hwsec_cam_bitmap: 0x0 entry_idx=4
I have tried to include as much technical details as possible by looking at the details of the linked question. I will attach other information if needed. Thanks in advance.
