Public bug reported:
On my setup :
Intel Corporation 82575EB Gigabit Network Connection which uses igb driver
module,
the automatic detection of link speed fails
root@ubuntu1910:~# ethtool mgmt0
Settings for mgmt0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: Symmetric
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: 10Mb/s
The link speed can be manually fixed but ipmi-sol must be closed before.
ethtool -s mgmt0 speed 1000 duplex full autoneg off
And then
root@ubuntu1910:~# ethtool mgmt0
Settings for mgmt0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: Symmetric
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 1000baseT/Full
Advertised pause frame use: Symmetric
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: 1000Mb/s
I think it is directly linked to 5.3 kernel and used to work on 5.0
kernel
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1846786
Title:
link speed autodetection fails on ubuntu-19.10 and Intel board
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