Ethernet Latitude 5520 very slow

What is the output of:

sudo lshw -C network; lsb_release -a; uname -a

Thanks

Also please give the output of:

sudo dmidecode -t 1

Thanks

tiendeo@LTP258:~$ sudo lshw -C network; lsb_release -a; uname -a
[sudo] contraseña para tiendeo:
  *-network:0
       descripción: Interfaz inalámbrica
       producto: Intel Corporation
       fabricante: Intel Corporation
       id físico: 14.3
       información del bus: pci@0000:00:14.3
       nombre lógico: wlp0s20f3
       versión: 20
       serie: 70:9c:d1:37:86:b5
       anchura: 64 bits
       reloj: 33MHz
       capacidades: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
       configuración: broadcast=yes driver=iwlwifi driverversion=5.8.0-55-generic firmware=55.d9698065.0 QuZ-a0-hr-b0-55.u ip=192.168.1.34 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       recursos: iomemory:600-5ff irq:16 memoria:603d19c000-603d19ffff
  *-network:1
       descripción: Ethernet interface
       producto: Ethernet Connection (13) I219-V
       fabricante: Intel Corporation
       id físico: 1f.6
       información del bus: pci@0000:00:1f.6
       nombre lógico: enp0s31f6
       versión: 20
       serie: 34:73:5a:b2:88:5d
       tamaño: 1Gbit/s
       capacidad: 1Gbit/s
       anchura: 32 bits
       reloj: 33MHz
       capacidades: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuración: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k duplex=full firmware=0.8-4 ip=192.168.1.38 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       recursos: irq:146 memoria:8c400000-8c41ffff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.2 LTS
Release: 20.04
Codename: focal
Linux LTP258 5.8.0-55-generic #62~20.04.1-Ubuntu SMP Wed Jun 2 08:55:04 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

tiendeo@LTP258:~$ sudo dmidecode -t 1
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 3.2 present.
Handle 0x0100, DMI type 1, 27 bytes
System Information
 Manufacturer: Dell Inc.
 Product Name: Latitude 5520
 Version: Not Specified
 Serial Number: GZDRG63
 UUID: 4c4c4544-005a-4410-8052-c7c04f473633
 Wake-up Type: Other
 SKU Number: 0A21
 Family: Latitude

Thanks!!

I always thought that kernel boot parameters should no have space characters around the equal sign.

Try

GRUB_CMDLINE_LINUX_DEFAULT = "splash pcie_aspm=off"

Is this a dual boot system? There are some BIOS updates which may help. You can update Dell BIOSes without Windows but it just makes things easier.

Have you also tried rebooting your router?

Yes, all the laptops of the developers are DUAL BOOT, Windows 10 + Ubuntu

BIOS has the latest DELL updates, but still, it goes wrong

We have tested in different places, office, home, various routers

Sorry for the spaces in the example, they are for some reason of Web format, but in GRUB it is correct

Thank you!!

hi, any other suggestions to fix this problem?

Thank you!

This question was expired because it remained in the 'Open' state without activity for the last 15 days.