I use Linux since 4.* kernel version and internet download speed always slower than on Windows 7/10. On Windows, speed about 90 mb/s. On Linux, speed about 30 - 50 mb/s. If download via Torrent, speed is good: about 90 mb/s. But via other apps (all web browsers, skype and other) : speed about 30 - 50 mb/s. I tried a lot of Linux dists (ubuntu 14 to 18, KDE neon, Mint, Deepin and other). The bug is same. Fix it finally! lspci -k | more 00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD9x0/RX980 Host Bri dge (rev 02) Subsystem: Micro-Star International Co., Ltd. [MSI] RD9x0/RX980 Host Bri dge 00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD/ATI] RD890S/RD990 I/O Memory Ma nagement Unit (IOMMU) Subsystem: Micro-Star International Co., Ltd. [MSI] RD890S/RD990 I/O Mem ory Management Unit (IOMMU) 00:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890/RD9x0/RX980 PCI to PCI bridge (PCI Express GFX port 0) Kernel driver in use: pcieport 00:09.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890/RD9x0/RX980 PCI to PCI bridge (PCI Express GPP Port 4) Kernel driver in use: pcieport 00:0a.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890/RD9x0/RX980 PCI to PCI bridge (PCI Express GPP Port 5) Kernel driver in use: pcieport 00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x 0 SATA Controller [IDE mode] (rev 40) Subsystem: Micro-Star International Co., Ltd. [MSI] SB7x0/SB8x0/SB9x0 SA TA Controller [IDE mode] Kernel driver in use: ahci Kernel modules: ahci 00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller Subsystem: Micro-Star International Co., Ltd. [MSI] SB7x0/SB8x0/SB9x0 US B OHCI0 Controller Kernel driver in use: ohci-pci 00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller Subsystem: Micro-Star International Co., Ltd. [MSI] SB7x0/SB8x0/SB9x0 US B EHCI Controller Kernel driver in use: ehci-pci 00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller Subsystem: Micro-Star International Co., Ltd. [MSI] SB7x0/SB8x0/SB9x0 US B OHCI0 Controller Kernel driver in use: ohci-pci 00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller Subsystem: Micro-Star International Co., Ltd. [MSI] SB7x0/SB8x0/SB9x0 US B EHCI Controller Kernel driver in use: ehci-pci 00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus Controller (re v 42) Subsystem: Micro-Star International Co., Ltd. [MSI] SBx00 SMBus Controll er Kernel driver in use: piix4_smbus Kernel modules: i2c_piix4, sp5100_tco 00:14.1 IDE interface: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 IDE Controller (rev 40) Subsystem: Micro-Star International Co., Ltd. [MSI] SB7x0/SB8x0/SB9x0 ID E Controller Kernel driver in use: pata_atiixp Kernel modules: pata_atiixp, pata_acpi 00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA) (rev 40) Subsystem: Micro-Star International Co., Ltd. [MSI] SBx00 Azalia (Intel HDA) Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel 00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 LPC host controller (rev 40) Subsystem: Micro-Star International Co., Ltd. [MSI] SB7x0/SB8x0/SB9x0 LP C host controller 00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 PCI to PCI Brid ge (rev 40) 00:14.5 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI2 Controller Subsystem: Micro-Star International Co., Ltd. [MSI] SB7x0/SB8x0/SB9x0 US B OHCI2 Controller Kernel driver in use: ohci-pci 00:15.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] SB700/SB800/SB900 PCI to PCI bridge (PCIE port 0) Kernel driver in use: pcieport 00:16.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller Subsystem: Micro-Star International Co., Ltd. [MSI] SB7x0/SB8x0/SB9x0 US B OHCI0 Controller Kernel driver in use: ohci-pci 00:16.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller Subsystem: Micro-Star International Co., Ltd. [MSI] SB7x0/SB8x0/SB9x0 US B EHCI Controller Kernel driver in use: ehci-pci 00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Fun ction 0 00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Fun ction 1 00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Fun ction 2 00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Fun ction 3 Kernel driver in use: k10temp Kernel modules: k10temp 00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Fun ction 4 Kernel driver in use: fam15h_power Kernel modules: fam15h_power 00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Fun ction 5 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Junipe r PRO [Radeon HD 6750] Subsystem: ASUSTeK Computer Inc. Juniper PRO [Radeon HD 6750] Kernel driver in use: radeon Kernel modules: radeon 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Juniper HDMI Audio [Radeon HD 5700 Series] Subsystem: ASUSTeK Computer Inc. Juniper HDMI Audio [Radeon HD 5700 Seri es] Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel 02:00.0 USB controller: Renesas Technology Corp. uPD720202 USB 3.0 Host Controll er (rev 02) Subsystem: Micro-Star International Co., Ltd. [MSI] uPD720202 USB 3.0 Ho st Controller Kernel driver in use: xhci_hcd 03:00.0 USB controller: Renesas Technology Corp. uPD720202 USB 3.0 Host Controll er (rev 02) Subsystem: Micro-Star International Co., Ltd. [MSI] uPD720202 USB 3.0 Ho st Controller Kernel driver in use: xhci_hcd 05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 P CI Express Gigabit Ethernet Controller (rev 06) Subsystem: Micro-Star International Co., Ltd. [MSI] RTL8111/8168/8411 PC I Express Gigabit Ethernet Controller Kernel driver in use: r8169 Kernel modules: r8169
Reason could be anything. And the info is quite vague. Please check whether there's any previous kernel version not showing this issue and what's the first kernel version with the issue. And it would be helpful to know whether there's any trace of the issue in logs, e.g. syslog, network statistics (e.g. missed RX packets), etc. And it would be good to see some iperf results.
(In reply to Heiner Kallweit from comment #1) > Reason could be anything. And the info is quite vague. Please check whether > there's any previous kernel version not showing this issue and what's the > first kernel version with the issue. > And it would be helpful to know whether there's any trace of the issue in > logs, e.g. syslog, network statistics (e.g. missed RX packets), etc. > And it would be good to see some iperf results. How can I check it !? (kernel version not showing this issue and what's the first kernel version with the issue.)
Either your distribution provides also older kernel versions, or build and test all kernel versions available on kernel.org. And you could also check performance with another network adapter.
The OP is non-responsive. Closing.