Realtek RTL8821CE - How to improve speed?

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System:
  Kernel: 5.17.4-256-tkg-bmq arch: x86_64 bits: 64 compiler: gcc v: 11.2.0
    parameters: intel_pstate=passive BOOT_IMAGE=/@/boot/vmlinuz-linux-tkg-bmq
    root=UUID=71ddc465-8706-4c2e-ab7c-e66e5b669061 rw rootflags=subvol=@
    quiet quiet splash rd.udev.log_priority=3 vt.global_cursor_default=0
    loglevel=3
  Desktop: Xfce v: 4.16.0 tk: Gtk v: 3.24.29 info: xfce4-panel wm: xfwm
    v: 4.16.1 vt: 7 dm: LightDM v: 1.30.0 Distro: Garuda Linux base: Arch Linux
Machine:
  Type: Laptop System: ASUSTeK product: VivoBook_ASUSLaptop X571GD_X571GD
    v: 1.0 serial: <superuser required>
  Mobo: ASUSTeK model: X571GD v: 1.0 serial: <superuser required>
    UEFI: American Megatrends v: X571GD.312 date: 09/15/2021
Battery:
  ID-1: BAT1 charge: 16.5 Wh (61.3%) condition: 26.9/42.3 Wh (63.6%)
    volts: 10.5 min: 11.6 model: ASUS A32-K55 type: Li-ion serial: N/A
    status: discharging
CPU:
  Info: model: Intel Core i5-8300H bits: 64 type: MT MCP arch: Coffee Lake
    family: 6 model-id: 0x9E (158) stepping: 0xA (10) microcode: 0xEC
  Topology: cpus: 1x cores: 4 tpc: 2 threads: 8 smt: enabled cache:
    L1: 256 KiB desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB desc: 4x256 KiB
    L3: 8 MiB desc: 1x8 MiB
  Speed (MHz): avg: 1082 high: 1242 min/max: 800/4000 scaling:
    driver: intel_cpufreq governor: ondemand cores: 1: 1228 2: 896 3: 1242
    4: 1091 5: 1020 6: 1200 7: 1083 8: 900 bogomips: 36832
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities:
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf
    mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable
  Type: meltdown mitigation: PTI
  Type: spec_store_bypass
    mitigation: Speculative Store Bypass disabled via prctl
  Type: spectre_v1
    mitigation: usercopy/swapgs barriers and __user pointer sanitization
  Type: spectre_v2 mitigation: Retpolines, IBPB: conditional, IBRS_FW,
    STIBP: conditional, RSB filling
  Type: srbds mitigation: Microcode
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Intel CoffeeLake-H GT2 [UHD Graphics 630] vendor: ASUSTeK
    driver: i915 v: kernel ports: active: eDP-1 empty: HDMI-A-1 bus-ID: 00:02.0
    chip-ID: 8086:3e9b class-ID: 0300
  Device-2: NVIDIA GP107M [GeForce GTX 1050 Mobile] vendor: ASUSTeK
    driver: N/A alternate: nouveau pcie: gen: 3 speed: 8 GT/s lanes: 16
    bus-ID: 01:00.0 chip-ID: 10de:1c92 class-ID: 0302
  Device-3: IMC Networks USB2.0 HD UVC WebCam type: USB driver: uvcvideo
    bus-ID: 1-7:4 chip-ID: 13d3:56a8 class-ID: 0e02 serial: <filter>
  Display: x11 server: X.Org v: 21.1.3 compositor: xfwm v: 4.16.1 driver:
    X: loaded: intel unloaded: modesetting alternate: fbdev,vesa gpu: i915
    display-ID: :0.0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.00x11.22")
    s-diag: 582mm (22.93")
  Monitor-1: eDP-1 mapped: eDP1 model: LG Display 0x0563 built: 2018
    res: 1920x1080 dpi: 143 gamma: 1.2 size: 340x190mm (13.39x7.48")
    diag: 395mm (15.5") ratio: 16:9 modes: 1920x1080
  OpenGL: renderer: Mesa Intel UHD Graphics 630 (CFL GT2)
    v: 4.6 Mesa 22.0.1 direct render: Yes
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: ASUSTeK driver: snd_hda_intel
    v: kernel alternate: snd_soc_skl,snd_sof_pci_intel_cnl bus-ID: 00:1f.3
    chip-ID: 8086:a348 class-ID: 0403
  Sound Server-1: ALSA v: k5.17.4-256-tkg-bmq running: yes
  Sound Server-2: PulseAudio v: 15.0 running: no
  Sound Server-3: PipeWire v: 0.3.50 running: yes
Network:
  Device-1: Realtek RTL8821CE 802.11ac PCIe Wireless Network Adapter
    vendor: AzureWave driver: rtw_8821ce v: N/A modules: rtw88_8821ce pcie:
    gen: 1 speed: 2.5 GT/s lanes: 1 port: 4000 bus-ID: 03:00.0
    chip-ID: 10ec:c821 class-ID: 0280
  IF: wlp3s0 state: up mac: <filter>
  Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: ASUSTeK driver: N/A modules: r8169 pcie: gen: 1 speed: 2.5 GT/s
    lanes: 1 port: 3000 bus-ID: 04:00.0 chip-ID: 10ec:8168 class-ID: 0200
Bluetooth:
  Device-1: IMC Networks Bluetooth Radio type: USB driver: btusb v: 0.8
    bus-ID: 1-14:5 chip-ID: 13d3:3529 class-ID: e001 serial: <filter>
  Report: bt-adapter ID: hci0 rfk-id: 0 state: down
    bt-service: enabled,running rfk-block: hardware: no software: no
    address: <filter>
RAID:
  Hardware-1: Intel 82801 Mobile SATA Controller [RAID mode] driver: ahci
    v: 3.0 port: 6060 bus-ID: 00:17.0 chip-ID: 8086:282a rev: N/A
    class-ID: 0104
Drives:
  Local Storage: total: 1.14 TiB used: 11.53 GiB (1.0%)
  SMART Message: Required tool smartctl not installed. Check --recommends
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: SK Hynix
    model: HFM256GDJTNG-8310A size: 238.47 GiB block-size: physical: 512 B
    logical: 512 B speed: 15.8 Gb/s lanes: 2 type: SSD serial: <filter>
    rev: 80001C00 temp: 37.9 C scheme: GPT
  ID-2: /dev/sda maj-min: 8:0 vendor: Toshiba model: MQ04ABF100
    size: 931.51 GiB block-size: physical: 4096 B logical: 512 B
    speed: 6.0 Gb/s type: HDD rpm: 5400 serial: <filter> rev: 1J scheme: GPT
Partition:
  ID-1: / raw-size: 238.17 GiB size: 238.17 GiB (100.00%)
    used: 11.53 GiB (4.8%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
    used: 576 KiB (0.2%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1
  ID-3: /home raw-size: 238.17 GiB size: 238.17 GiB (100.00%)
    used: 11.53 GiB (4.8%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2
  ID-4: /var/log raw-size: 238.17 GiB size: 238.17 GiB (100.00%)
    used: 11.53 GiB (4.8%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2
  ID-5: /var/tmp raw-size: 238.17 GiB size: 238.17 GiB (100.00%)
    used: 11.53 GiB (4.8%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2
Swap:
  Kernel: swappiness: 133 (default 60) cache-pressure: 50 (default 100)
  ID-1: swap-1 type: zram size: 7.62 GiB used: 0 KiB (0.0%) priority: 100
    dev: /dev/zram0
Sensors:
  System Temperatures: cpu: 46.0 C pch: 49.0 C mobo: 27.8 C
  Fan Speeds (RPM): cpu: 0
Info:
  Processes: 287 Uptime: 2m wakeups: 4 Memory: 7.62 GiB
  used: 2.02 GiB (26.5%) Init: systemd v: 250 tool: systemctl Compilers:
  gcc: 11.2.0 Packages: pacman: 1334 lib: 360 Shell: Bash v: 5.1.16
  running-in: xfce4-terminal inxi: 3.3.15
Garuda (2.6.1-3):
  System install date:     2022-04-23
  Last full system update: 2022-04-24
  Is partially upgraded:   No
  Relevant software:       NetworkManager
  Windows dual boot:       Probably (Run as root to verify)
  Snapshots:               Snapper
  Failed units:            NetworkManager-wait-online.service

[Fit]

Internet is downloading in speed 2,2 MB/s and it should be in speed 3,5 MB/s . Thank you and sorry

Please very match admin, improve my 1st post , thank you .

[filo]

First post formatted.
Give a look how-to, for the future . Also read:

How to write a nicely formatted post in Discourse/Forum

Writing a well formatted post in the forum (Discource powered) is important, if you want readers to easily read and understand. It's especially important for terminal output. Here is a brief tutorial. Terminal output For terminal output, text output with special characters, always use code wrapping (Pre-formated text). Select all of the text and do one of these: Hit the </> button in Discource Post Toolbar. Press CtrlShift+C on your keyboard. Manually with markdown After you Copy yo…

Internet speed, rather than on the kernel depends on the network card and the relevant driver.
Considering that the former cannot be easily changed, you could give a try to the driver mentioned below (detailed instructions are included)

RTL8821CE - When idle, wifi drops and works only after reconnecting

Disable Wifi power saving: You can disable Network Manager's power saving features by creating /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf with the following command:: sudo touch /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf Add the following contents to the newly created conf file with your preferred text editor: [connection] wifi.powersave = 0 Alternately, you can run the following command to generate the required conf file automatically: echo -e "[connection]…

I think it would be safer to start with the linux kernel for It. I see also users in the forum using it with linux-zen. I don’t know with your current kernel.

[Odin5133]

Had the same network driver and same network issue.It is more of the problem of the network driver than the kernel.
Just install
http://aur.archlinux.org/packages/rtl8821ce-dkms-git
from your software installer.
Then reboot
If it is still not working then input this command

echo -e "options rtw_pci disable_aspm=1\nblacklist rtw88_8821ce" | sudo tee /etc/modprobe.d/rtl8821ce.conf

which makes a files in etc/modprobe to blacklist default driver and makes kernel to use rtl8821ce driver
reboot again

[Fit]

Thanks , it works and I choosed kernel 5.16.20 hardened .