Package: bugs.debian.org Severity: normal Duplication steps:
* Assemble a network with 1000 Mb/s capabilities. (switch, router, etc). * Obtain a Lenovo Thinkpad T480s or T490. These devices are equiped with a 1000 Mb/s NIC. * Install debian 10 (stable / latest) on said device. * Plug in a CAT6 /a ethernet cable from the switch to the onboard NIC. Expected result: NIC autonegotiates as 1000 Mb/s. Actual result: NIC autonegotiates as 10 Mb/s. Other notes: Unplugging the cable and plugging it back in quickly (under 2 seconds) successfully results in the NIC running at 1000 Mbps. Connecting via a Thunderbolt dock with 1000 Mb/s port works successfully every time. Please note that this post does a much better job of explaining the issue, although it was for Fedora v 30 on a Lenovo Thinkpad T480s. https://bugzilla.redhat.com/show_bug.cgi?id=1627816 -- System Information: Debian Release: 10.8 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 4.19.0-13-amd64 (SMP w/8 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled
