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Bug#779384: marked as done (base: Gigabit Ethernet connection being downgraded to 100Mb/s mode (Renegotiation issues))

Your message dated Sat, 08 May 2021 08:42:03 -0700 (PDT)
with message-id <6096b14b.1c69fb81.58576.de21@mx.google.com>
and subject line Closing this bug (BTS maintenance for src:linux bugs)
has caused the Debian Bug report #779384,
regarding base: Gigabit Ethernet connection being downgraded to 100Mb/s mode (Renegotiation issues)
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
779384: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=779384
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: base
Severity: serious

-- System Information:
Debian Release: 7.8
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash


-- Problem Description:

A server machine with a Gigabit NIC is directly linked to a router supporting Gigabit connetcions.

After a while or after an unexpected power failure on the router(or restart), the Gigabit Connection on Gigabit NIC gets dumbed down to 100 Mb/s mode.


-- Workaround:

The only working solution discovered, is to retart the server machine(restarting router does not solve the issue). After doing so,
the connection gets correctly negotiated to 1000 Mb/s mode.


-- Failed attempts:

Using "ethtool" and "mii-tool" to request/force renegotiation with varying flags and parameters did not produce any positive effects.

Attempting to reset/restart networking results in no effect or "SSH hanging" depending on the method used.


-- Technical Information:

{([ lshw ])}

           *-network
                description: Ethernet interface
                product: AR8161 Gigabit Ethernet
                vendor: Atheros Communications Inc.
                physical id: 0
                bus info: pci@0000:02:00.0
                logical name: eth0
                version: 10
                serial: 90:2b:34:5e:19:5f
                size: 100Mbit/s
                capacity: 1Gbit/s
                width: 64 bits
                clock: 33MHz
                capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
                configuration: autonegotiation=on broadcast=yes driver=alx duplex=full firmware=alx ip=192.168.23.44 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
                resources: irq:43 memory:f7c00000-f7c3ffff ioport:e000(size=128)



{([ ethtool eth0 ])}

        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Supported pause frame use: No
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: Yes
        Speed: 100Mb/s
        Duplex: Full
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        Auto-negotiation: on
        MDI-X: Unknown
        Supports Wake-on: pg
        Wake-on: pg
        Current message level: 0x00000000 (0)

        Link detected: yes



{([ ethtool -i eth0 ])}

driver: alx
version:
firmware-version: alx
bus-info: 0000:02:00.0
supports-statistics: no
supports-test: no
supports-eeprom-access: no
supports-register-dump: yes
supports-priv-flags: no



{([ http://www.asus.com/Networking/RTN56U/ ])}

Product: Dual-Band Wireless-N600 Gigabit Router
Firmware version: 3.0.0.4.376.3754

--- End Message ---
--- Begin Message --- 
Hi

This bug was filed for a very old kernel or the bug is old itself
without resolution.

If you can reproduce it with

- the current version in unstable/testing
- the latest kernel from backports

please reopen the bug, see https://www.debian.org/Bugs/server-control
for details.

Regards,
Salvatore

--- End Message ---
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