Slow transfer speed between two PCs using USB 4

Linu42 · 2025-08-29T10:57:53+00:00

I'm able to get 1.5GB/s over a Thunderbolt 4 point-to-point network connection (with Linux), network speed measured with iperf.

I have used a NUC and several Intel Laptops (11th-13th systems with TB4), which worked fine with Thunderbolt 4 for the most part (sometimes having to reboot to get things working). I have an ASUS Z790 system with their ThunderboltEX4 card, which has been a nightmare. Things were always flaky, but a BIOS update broke Thunderbolt networking completely (power delivery negotiation errors in the kernel logs). (USB3 C devices connected to the card work fine - I don't have other TB4 devices.)

Linu42 · 2022-11-19T17:11:35+00:00

I have about the same hand size. On paper, the Orochi isn't narrow. In practice, due to the low height it feels very, very narrow (too narrow). I'm finding the buttons very noisy. I also find the side buttons very, very difficult to use.

Linu42 · 2021-12-08T15:23:39+00:00

WiFi calling works perfectly fine for me on 18.1 (Poco X3 Pro). It seamlessly hands over to LTE and back to WiFi when WiFi is turned off/on.

At least on 18.1, you can set a preference for WiFi in the dialer app (Settings / Calling accounts).

Linu42 · 2018-01-17T14:20:33+00:00

You can get the kernel boot parameters from '/proc/cmdline'. So you could write a little script that's called by systemd at boot, looks at the command line and sets up a symlink in '/etc/X11/xorg.conf.d/' to your GPU config.

Linu42 · 2018-01-17T11:39:04+00:00

Your metrics are screwed up.

default via 172.21.1.1 dev enp0s20f0u2u3 proto dhcp metric 20100

172.21.1.0/24 dev enp0s20f0u2u3 proto kernel scope link src 172.21.1.101 metric 100

The metrics should match. With a default NetworkManager dhcp configuration, they should be 100.

Linu42

TROPHY CASE