Hi Roland, Thanks for the report.
Roland Clobus <[email protected]> (2026-07-30): > Hello maintainers of hw-detect, > > The new version of ethdetect.sh does not detect the network interfaces when > booting from BIOS. > > This can be seen on openQA [1] where the installer fails to find the network > interfaces for the BIOS scenarios. The UEFI scenarios still work. > > From the d-i syslog (broken, BIOS) [2]: > Jul 29 21:33:12 main-menu[430]: INFO: Menu item 'ethdetect' selected > Jul 29 21:33:17 net/hw-detect.hotplug: Detected hotpluggable network > interface lo > Jul 29 21:33:18 net/hw-detect.hotplug: Detected hotpluggable network > interface ens4 > Jul 29 21:33:18 kernel: [ 30.969705] virtio_net virtio0 ens4: renamed from > eth0 > Jul 29 21:33:19 check-missing-firmware: looking at dmesg for the first time > Jul 29 21:33:19 check-missing-firmware: saving timestamp for a later use: [ > 30.969705] > Jul 29 21:33:19 check-missing-firmware: no missing firmware in loaded kernel > modules > > From the d-i syslog (last working, BIOS) [3]: > Jul 29 16:03:07 main-menu[430]: INFO: Menu item 'ethdetect' selected > Jul 29 16:03:13 net/hw-detect.hotplug: Detected hotpluggable network > interface lo > Jul 29 16:03:13 kernel: [ 31.465192] virtio_net virtio0 ens4: renamed from > eth0 > Jul 29 16:03:13 net/hw-detect.hotplug: Detected hotpluggable network > interface ens4 > Jul 29 16:03:14 check-missing-firmware: looking at dmesg for the first time > Jul 29 16:03:14 check-missing-firmware: saving timestamp for a later use: [ > 31.465192] > Jul 29 16:03:14 check-missing-firmware: no missing firmware in loaded kernel > modules > Jul 29 16:03:14 check-missing-firmware: taking network interface ens4 up/down > Jul 29 16:03:15 check-missing-firmware: looking at dmesg again, restarting > from timestamp: [ 31.465192] > Jul 29 16:03:15 check-missing-firmware: timestamp found, truncating dmesg > accordingly > Jul 29 16:03:15 check-missing-firmware: keeping timestamp (no new lines): [ > 31.465192] > Jul 29 16:03:15 check-missing-firmware: no missing firmware in loaded kernel > modules > > After 1.176 entered unstable, all BIOS installer tests started to fail. There > are no version differences in the other udebs, so that's why I report against > hw-detect. > > I think it might be caused by the 'Change hw-detect/firmware-lookup > type to string' change, since that influences whether the network > interface is taken down and up again. Commit 619ba547da555a9a87290c8ce9315c3db5376cf0 looks much more plausible to me, as interface names can be preceeded by a number of spaces, with a first column that's right-aligned. Depending on if and how the heading is word-wrapped (I'm seeing Inter-\nface in several cases but I'm not checking the actual implementation), the number of interfaces, and their name length, a number of them can go missing. With default QEMU settings on bookworm, latest mini.iso gets: Inter-| face | lo: ens3: which probably explains the issue down the line. Cheers, -- Cyril Brulebois ([email protected]) <https://debamax.com/> D-I release manager -- Release team member -- Freelance Consultant
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